CN104271876A

CN104271876A - Steam Assisted Gravity Drainage Using Oxygen (SAGDOX) Satellite System for Remote Recovery of Hydrocarbons

Info

Publication number: CN104271876A
Application number: CN201380024023.XA
Authority: CN
Inventors: R·K·克尔
Original assignee: Nexen Energy ULC
Current assignee: CNOOC Petroleum North America ULC
Priority date: 2012-05-07
Filing date: 2013-05-07
Publication date: 2015-01-07

Abstract

The present invention relates to a SAGDOX satellite system for recovering hydrocarbons comprising a central SAGDOX site, at least one SAGDOX satellite site, and a piping lane for communicating between the central SAGDOX site and the SAGDOX satellite site. The satellite system is designed to recover hydrocarbons using a SAGDOX process at the satellite site and to transmit the recovered hydrocarbons to the central site.

Description

For (SAGDOX) satellite system of the SAGD of the use oxygen of long-range hydro carbons of gathering

Background technology

Athabasca Oil Sands is one of maximum in the world oil field.It contains 2.75 trillion barrels of pitch resources, comprises carbonate sediment (Butler, R.Thermal Recovery of Oil and Bitumen, Prentice-Hall, 1991).Resource of can gathering (not comprising carbonate sediment) is estimated to have an appointment 1,700 hundred million barrels at present.(CAPP, The Facts on Oil Sands, in November, 2010).These resources 20% by gathering, and other 80% by home position strengthening recover the oil (EOR) gather (CAPP, 2010 years).

The original position EOR method of leading pitch of gathering is steam assisted gravity drainage techniques (SAGD), and it is a kind of method only using steam.Table 1 provides the typical yield of the producer leading in the industry based on SAGD.But SAGD has some limitation.Research shows, the economic limit using the steam Transportation of heat-insulating pipeline is about 10 to 15km (Finn, A., Integration of Nuclear Power with Oil Sands Extraction Projects in Canada, Massachusetts Institute of Technology's paper, in June, 2007), (Energy Alberta Corporation, Nuclear Energy:Hedging Option for the Oil Sands, CHUA, the speech on November 2nd, 2006), (PAC, Clean Bitumen Technology Action Plan, in April, 2011).

More specifically, pitch exploitation restricted due to following SAGD central equipment characteristic: 1) equipment life with 90% average availability be confined to 40 years; 2) soil that can be used for SAGD be sum 30% (due to reservoir quality, earth's surface enter (surface access) or due to lease ownership problem); With 3) average SAGD well pattern is of a size of 1000 × 100mth, and the average pitch recovery ratio of each well pattern is 1500000 barrels (bbl) (411 barrels/day, 10 years).This means, based on above-mentioned hypothesis, without any satellite equipment, the maximum size for the supply of self-tolerant pitch is 108,000 barrel/day.Within 40 year life-span of the SAGD central equipment of supposition, maximum sized SAGD central equipment will be gathered 1,400,000,000 barrels of pitches.In order to the resource that can gather of fully gathering, by needs about 100 maximum sized SAGD central equipments and about 100,000 average SAGD well pattern.

For the larger central asphalt production person using SAGD, can be used for a selection of raising asphalt production to build long-range, less equipment.The service of SAGD Central Installation Supply is fed into described long-range, preferably less SAGD equipment with some, instead of builds new independent operating (untapped area) SAGD central authorities production equipment.This SAGD is less, remote equipment is referred to as pitch satellite equipment.Pitch satellite equipment be defined as by piping lane (pipeline corridor) " connection " in central equipment, for the satellite equipment of asphalt production.Described piping lane inputs in a large number from central SAGD supply of equipment and is fed into described satellite SAGD equipment, and pitch (or pitch and thinner or pitch and water) is back to described central equipment by it.

Some selections are had to transport pitch and water (fluid mixture of extraction) to central equipment from satellite equipment.Following is example:

1. push away water (push water) Xi Tong – pitch and water can in gathering line system together with transport and do not add chemical substance (Integra Engineering, Pushwater Systems Extend Heavy Oil Collection, 2011).Mixture can be considered to a large amount of oil/water (O/W) emulsion or drop-wise stream.Commercial system is in distance running (Integra (2011)) of 12km farthest.

2. O/w emulsion (O/W)-these emulsions are sheared by adding and are produced and stabilizing in chemical substance to the fluid of extraction.O/W emulsion can be stable and carry out pumping (Wikipedia with the continuous phase water being low to moderate 30% (v/v), Orimulsion, 2011), (Xinhua Economic News, China ' s First Orimulsion Pipeline Comes on Steam, on November 7th, 2006), (Brennan, J.R, Screw Pumps Provide High Efficiency in Transport of Orinocco Bitumen, P and G Journal, March nineteen ninety-five), (Stockwell, A. etc., Transoil Technology for Heavy Oil Transportation:Results of Field Trials at Wolf Lake, SPE18362-MS, in October, 1988).

3. " dil.bit ” – is current, and dil.bit is that the business of the long-distance transportation through pipeline of pitch is selected for the mixture of thinner and pitch.But for satellite equipment, this will need Oil-water separation (oil treatment equipment) and will produce Water circulation or dispose.For strategy for minimize fund and running cost satellite equipment for, this is a selection, but is not preferred.

4. thinner can add in the fluid mixture of extraction by the Hun He Wu – of thinner and pitch and water.The advantage done like this is the viscosity that oil phase has reduction, and close in cold weather if therefore transport pipeline, described oil phase can not hinder and restart.Shortcoming is that the concentration of water declines in described mixture, and therefore promotion water flow and emulsion flowing can be more difficult.

Above-described SAGD satellite equipment is desirable due to following reason:

1. steam can not be supplied fully to integrate described SAGD satellite equipment and described SAGD central equipment economically.

2. the soil around central SAGD equipment described in was exploited.

3. described in, SAGD remote satellite equipment has more voluminous reservoir.

4. network operator has the landright at SAGD satellite equipment place.

5. network operator wishes to start another SAGD satellite equipment that finally can become the self-sustaining equipment of SAGD central authorities.

The expansion (expanding) of 6.SAGD central equipment and product are sent brownly (and examination of pitch) has more cost benefit than building new (untapped area) project at SAGD satellite equipment place.

7. the SAGD satellite equipment of independent operating can utilize (or great majority) SAGD central equipment employee to run, and therefore saves running cost.

8. build the new SAGD central equipment needed for (such as, oil/water is separated) can large-scale production be utilized better manage, design, build and run.

9. reliability of technology can be improved.

10., compared with existing palm fibre ground equipment sites, it is more difficult for controlling construction cost at the equipment place in new untapped area.Therefore, in satellite equipment, there is motivation to maximize the ratio of Capital expenditure at central SAGD equipment place, and minimize described ratio at SAGD satellite equipment place.

Although existing SAGD satellite production equipment has above-described advantage really, need the satellite production equipment using more efficient technique to run.By creating SAGDOX satellite production equipment, improve production and efficiency, reducing cost.

Summary of the invention

Use following term and initialism herein:

Petroleum Production ACSA of CAPP – Canada

SAGD – steam assisted gravity drainage techniques

SAGDOX – uses the SAGD of oxygen

Petroleum technology alliance of PAC – Canada

NEB – National Energy Board (Canada)

OTSG – one way steam generator

EOR – intensified oil reduction

(xx) – has the SAGDOX of xx% oxygen to SAGDOX in steam/oxygen mixture (v/v)

(35) – have the SAGDOX of 35% oxygen to SAGDOX in steam/oxygen mixture (v/v)

ASU – air-separating plant

ETOR – energy stone oil ratio (MMBTU/ bucket)

SOR – steaming stone oil ratio (bucket/bucket)

CSS – cyclic steam encourages

DOE – Ministry of Energy (U.S.)

Mink cell focus association of CHUA – Canada

The MIT – Massachusetts Institute of Technology

O/W – oil-in-water (emulsion)

W/O – Water-In-Oil (emulsion)

HTO – high-temperature oxydation (150-300 DEG C)

Bbl – bucket

Bbls – bucket (plural number)

For purposes of the present invention, pitch is defined as the original position hydrocarbon of < 10API proportion and >100,000cp original position viscosity.Preferably for SAGDOX, steam and oxygen are respectively paralleled and injects continuously.Control steam and oxygen speed are to meet oxygen/steam (v/v) ratio target and to meet energy injection target.Regulate the removal speed of extraction gas to control well pattern pressure and to control and/or improve the uniformity of oxygen.The generation speed of extraction fluid (pitch and water) uses Automatic steam trap Trap to control, assuming that the region around producing well is vapour-saturated.

For convenience's sake, SAGDOX is labeled as SAGDOX (A), wherein A is oxygen (v/v) percentage in described oxygen and steam injection gas simultaneously.We have rated our oxygen ranges from 5% (v/v) to the scheme of 50% (v/v) in our U.S. Patent application US2013/0098603 (it is incorporated to herein by reference).

In addition, in the present invention, satellite equipment, satellite facility and the commutative use of satellite website.Meanwhile, the commutative use of central equipment, central facilities and central location.

The present invention relates to the satellite production technology of gathering for pitch, described technique or use SAGDOX or existing SAGD satellite equipment is converted into SAGDOX satellite equipment.

SAGDOX is intensified oil reduction (EOR) technique of pitch.Described technique can regard the combination of SAGD and situ combustion (ISC) as.SAGDOX is described in detail in US2013/0098603.Although similar with SAGD, SAGDOX introduces extra Vertical Well (or isolation is injected/produced) will remove incoagulability burning gases from system in oxygen injected system.SAGDOX is injected by live (open) steam and the oxygen of residual bitumen burns and adds energy to bitumen reservoir.Many advantages of the present invention come from oxygen relative to steam for heat being added to the performance of reservoir.

According to an aspect of the present invention, provide the SAGDOX satellite system for hydro carbons of gathering, described system comprises central SAGDOX website, at least one is away from the SAGDOX satellite website of described central SAGDOX website, and for the piping lane of UNICOM between described central SAGDOX website and described SAGDOX satellite website, distance preferably between described central location and satellite website is 9km to 160km, more preferably 10km to 100km, wherein said satellite system is designed to use SAGDOX method to gather hydro carbons at described SAGDOX satellite website, and the hydro carbons of gathering is transferred to described central SAGDOX website.

Preferably, described central SAGDOX website comprises:

(a) oil/water separator,

(b) oily harvester,

(c) water treatment facilities, and

(d) oxygen generator unit.

Preferably, described SAGDOX satellite website comprises:

(a) for the boiler of generating steam,

(b) at least one steam injection well,

(c) at least one oxygen Injection Well, and

(d) pitch producing well.

Preferably, described piping lane comprises:

(a) oxygen supply line, it is for supplying described SAGDOX satellite website;

B water supply line that () processes, it is for supplying described SAGDOX satellite website;

(c) natural gas supply pipeline, it is for supplying described SAGDOX satellite website; With

(d) pitch and hydromining closed tube road.

In a preferred embodiment, when described oxygen, water and natural gas supply being given described SAGDOX satellite website, the steam of oxygen and generation is injected in subsurface formations; And to gather asphalt emulsion (preferred O/W emulsion) from described subsurface formations, it is pumped and returns described central location, and then described pitch is separated with described water, and the water of process returns described satellite website generates for steam.

Preferably, the asphalt emulsion of gathering merges with chemical stabilizer or thinner further at described SAGDOX satellite website, and described piping lane comprises the pipeline for described chemical stabilizer or diluent delivery being delivered to described SAGDOX satellite website further.

Preferably, described SAGDOX satellite website comprises further for isolating CO ₂and/or the discharge Flash Gas Compression Skid System of other extraction gas.

Preferably, each central SAGDOX equipment has more than one SAGDOX satellite equipment, and described satellite equipment is connected to described central equipment by one or more piping lane.

Preferably, at described SAGDOX satellite equipment place, the steam of oxygen and generation is injected in described subsurface formations one of in the following manner: 1) steam of described oxygen and generation injects in same well simultaneously, 2) steam of described oxygen and generation injects in several wells simultaneously, 3) or the steam of described oxygen and generation inject respectively in steam and oxygen well separately, and described mixing occurs in described subsurface formations.

Preferably, in the mixture of the steam of described oxygen and generation, the concentration range of oxygen is 5% to 50% (v/v), and preferably 10% to 40% (v/v), more preferably this concentration is about 35% (v/v).

According to another aspect of the present invention, provide and to upgrade the method for existing SAGD facility by existing SAGD facility being converted to SAGDOX satellite system, described method comprises: install oxygen generator unit at described central SAGD facility place, the SAGDOX satellite website of at least one long-range setting is provided, preferred multiple SAGDOX satellite website, and between described central SAGD facility and described SAGDOX satellite website, provide at least one piping lane, preferred multiple piping lane.Preferably, described piping lane comprises additionally for the pipeline of oxygen supply, recovered water and natural gas supply further; Thus the operations area of the existing facility of gathering for pitch is improved by minimizing capital cost.

According to a further aspect of the invention, provide for gathering pitch pitch is delivered to the method for central facilities from satellite asphalt production website, wherein:

A () described satellite asphalt production website is away from described central facilities, preferred described satellite asphalt production website is positioned at apart from described central facilities more than 10km,

B () provides piping lane to connect described satellite asphalt production website and described central facilities, preferred described piping lane comprises at least one pipeline further for providing the water of the process being suitable for boiler applications from described central location; At least one pipeline is used for providing oxygen to the satellite asphalt production website of described SAGDOX from described central facilities; With at least one pipeline for providing the extraction fluid (pitch and water) of gathering from described satellite asphalt production website to described central facilities.Preferably, the described method for pitch of gathering from satellite asphalt production website is SAGDOX method as described herein.

Preferably, described extraction fluid (pitch and water) is transported to described central facilities from described satellite asphalt production website pushing away in water system.

Preferably, described extraction fluid (pitch and water) is transported to described central equipment as the emulsion of stabilizing.Preferably, the emulsion of described stabilizing comprises chemical stabilizer, such as ethoxylated nonylphenol, is preferably added into described extraction fluid (pitch and water) at described satellite asphalt production website.

Preferably, thinner is mixed to be delivered to described central facilities with described extraction fluid (pitch and water).

Preferably, also natural gas or fuel gas are supplied to described satellite asphalt production website from described central facilities by described piping lane, to be used as boiler oil.

Preferably, also electricity is flowed to described satellite asphalt production website from described central facilities, or be delivered to described central facilities from described satellite asphalt production website.

Preferably, extraction gas (CO is added ₂) pipeline is transported to described central facilities SAGDOX to be discharged gas from described satellite asphalt production website.

According to another aspect of the present invention, website of being gathered by the existing SAGD satellite pitch with existing steam capacity utilizes the gather existing steam capacity at website place of described SAGD satellite pitch to be converted into SAGDOX satellite website as defined herein.

According to another aspect of the present invention, recovered water is separated at described satellite pitch website of gathering, preferably this water or be treated for boiler applications or disposed by original place, and the pitch wherein diluted is transported and is back to described central facilities and generally not containing unnecessary water.

More specifically, SAGDOX production satellite equipment of the present invention has following advantage:

1. SAGDOX satellite equipment described in is greater than 9km, more preferably 15km apart from described central SAGDOX central equipment, because oxygen can Cemented filling about 100 miles economically.This is more than 10 times that steam is about 10km limit.

2.SAGDOX satellite website at described satellite website (untapped area) for piping lane and whole project reduce Capital expenditure.The major part of main technique key element is paid in described central facilities.Particularly, the piping lane cost for SAGDOX has lacked 22%; Boiler cost can reduce by 85%.

If 3. discharge gas (mainly CO ₂) or in satellite equipment, central equipment or the captured or isolation at the scene of the two, the discharge of the pitch of so per unit production will significantly reduce.

4., as shown in US2013/0098603, when introducing SAGDOX satellite website, process efficiency makes moderate progress than SAGD satellite website.If the energy that efficiency produces as (in pitch) is compared to being used for energy-producing energy and measuring on the surface, so SAGODX is the technique more much higher than SAGD efficiency.

5. minimize the use of water.As shown in US2013/0098603, if SAGDOX creates connate water, so can reduce at central equipment and/or eliminate make up water.Particularly, SAGDOX directly can also produce water from burning and by evaporation connate water, makes not need new make up water.

6. the mixture of steam described in and oxygen has the preferred oxygen ranges of 5% to 50% (v/v).According to following reason, this preferable range of SAGDOX has minimum and maximum oxygen/steam ratio:

A. minimum oxygen/steam ratio is 0.05 (v/v) (oxygen concentration is about 5%).Below this concentration, there is following situation:

I.HTO burning starts to become unstable.Maintain HTO by minimum oxygen flow to become and be more difficult to realize, particularly for wherein combustion front away from for injector, ripe SAGDOX technique.

Ii. all primary evaporations of water and flowing become difficulty.

B. maximum oxygen/steam ratio is 1.00 (v/v) (oxygen concentration is about 50.0%).More than this concentration, there is following situation:

Iii. the reflux rate for maintaining steam storage in reservoir exceedes 70% of total steam.This is difficult to reach in practice.

Iv. begin to exceed by clean pitch (" the coke ") fuel of oxidation consumption the residual fuel stayed in SAGD steam blowing district.Therefore lower recovery ratio and reserves can be had compared to SAGD, SAGDOX (50+).

V., on this limit, become and be difficult to produce steam and oxygen from the ASU:Cogen equipment integrated.

Therefore preferred oxygen/steam ratio ranges is 0.05 to 1.00 (v/v), and it corresponds to the concentration range of 5 to 50% (v/v) of oxygen in mixture.

7. total capital expenditure cost is also few.For the per unit energy being delivered to reservoir, the Capital expenditure of oxygen is than the Capital expenditure much less of steam and water treatment.

8. achieved the large-scale production of air-separating plant (ASU) the oxygen equipment under SAGDOX satellite reasonable size.For 25KBD SAGDOX (35) satellite, need the oxygen of 2000 metric ton/day.All applicable for both capacity of this capacity for satellite and ASU equipment.

9. SAGDOX method of the present invention produces in one embodiment is almost pure CO substantially ₂waste gas.In one embodiment, if this waste gas is captured with isolation, then the CO in SAGDOX ₂discharge can than SAGD much less.

10. at first blush, may seem that SAGDOX needs more Jing – to inject oxygen and the incoagulable gas removing generation than SAGD.But SAGDOX allows to drill out longer horizontal well by reducing the waterpower limit of horizontal well length.Therefore, on the basis of " per unit volume reservoir ", the cost of SAGDOX well can be equivalent to the cost or less of SAGD well.

11.SAGDOX operation cost is less than SAGD.Described well can run more for a long time and improve reserves.

Accompanying drawing explanation

Fig. 1 describes typical SAGDOX technique.

Fig. 2 describes the satellite SAGD of 10KBD (thousand barrels/day).

Fig. 3 describes the satellite SAGDOX (10) of 10KBD.

Fig. 4 describes the satellite SAGDOX (9) of 10KBD.

Fig. 5 describes the satellite SAGDOX (20) of 10KBD.

Fig. 6 describes the satellite SAGDOX (35) of 10KBD.

Fig. 7 describes the satellite SAGDOX (50) of 10KBD.

The SAGD satellite spread that Fig. 8 describes existing 10KBD is SAGDOX (5) increment.

The SAGD satellite spread that Fig. 9 describes existing 10KBD is SAGDOX (9) increment.

The SAGD satellite spread that Figure 10 describes existing 10KBD is SAGDOX (20) increment.

The SAGD satellite spread that Figure 11 describes existing 10KBD is SAGDOX (35) increment.

The SAGD satellite spread that Figure 12 describes existing 10KBD is SAGDOX (50) increment.

Figure 13 describes the viscosity vs.% decentralized photo of O/W emulsion.

Figure 14 describes the central SAGDOX equipment being connected to more than one satellite SAGDOX equipment.

Detailed description of the invention

Referring now to Fig. 1, describe the typical geometry of SAGDOX system of the present invention.Can find out, oxygen 5 is added by steam pipeline 1 during SAGD technique, and effluent comprises extraction gas 4 and pitch and water 2.

Referring now to Fig. 2, describe SAGD system, wherein SAGD central equipment is connected to SAGD satellite website.In this case, device is made up of the pipeline extending to satellite website 20 from infrastructure device 10.Infrastructure device 10 is connected with satellite website 20 by a series of pipeline.Especially, through pipeline 30, the water extraction of process is supplied to satellite website 20.Through pipeline 40, thinner is provided to satellite website 20.Described satellite website is provided to the boiler in satellite website for the gas fuel fired through pipeline 50.Finally, provide pipeline 60 so that the mixture of thinner+recovered water+pitch is delivered to central equipment 10 from satellite website 20.In the apparatus, the water 30 of the process of 33.7KBD is needed to carry out running (namely producing for steam) at the SAGD of described satellite website; Boiler CO ₂for 14.8MMSCFD; The gas fuel 50 of 14.8MMSCFD is needed to supply combustion to described boiler; The make up water 75 of 3.37KBD is needed at described infrastructure device place; And the thinner of 53.7KBD+recovered water+pitch 120 Product pipeline volume.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) SOR is 3.37; 3) OTSG is 80% efficiency; 4) steam is 1000BTU/ pound; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; With 8) gas fuel is 1000BTU/SCF; With 9) thinner/pitch ratio equals 1.0.

Referring now to Fig. 3, describe SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite website 20.An essential difference between the system of Fig. 1 and the system of Fig. 2 is the other oxygen pipeline 45 from infrastructure device 10, with by oxygen feeding SAGDOX satellite website 20.Within the system, in steam/oxygen mixture, the percentage of oxygen is 5, and there is not oxygen in the system of fig. 1.Can be readily seen that, the oxygen 45 of 8.56MMSCFD or 327 metric ton/day is delivered to SAGDOX satellite equipment 20; The pure CO discharged ₂105 is 8.56MMSCFD; Gas fuel 51 from infrastructure device 10 to described satellite is 9.6MMSCFD; Thinner+recovered water+pitch 121 is 42.0KBD; The water 31 of process is 22.0KBD; Make up water 76 is 2.2KBD; The water 86 disposed is 2.2KBD; ASU electricity 60 is 4.0MW, and in Fig. 2 is zero; And boiler CO ₂111 is 9.6MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; 8) without extra water; 9) oxygen (95-97% purity) of 292.5kWh/ metric ton; 10) gas fuel is 1000BTU/SCF; 11) thinner/pitch ratio equals 1.0; With 12) pure carbon dioxide discharge gas equal use oxygen.

Referring now to Fig. 4, describe SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite website 20.Within the system, in steam/oxygen mixture, the percentage of oxygen is 9.In this case, the oxygen 46 of 12.3MMSCFD or 421 metric ton/day is delivered to described satellite; The pure CO discharged ₂106 is 12.3MMSCFD; Gas fuel 52 from central equipment 10 to described satellite equipment is 7.38MMSCFD; Thinner+recovered water+pitch 122 is 36.9KBD; The water 32 of process is 16.9KBD; Make up water 77 is 1.7KBD; The water 87 disposed is 1.7KBD; ASU electricity 61 is 5.1MW; And boiler CO ₂112 is 7.38MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; 8) without extra water; 9) oxygen (95-97% purity) of 292.5kWh/ metric ton; 10) gas fuel is 1000BTU/SCF; 11) thinner/pitch ratio equals 1.0; With 12) pure carbon dioxide discharge gas equal use oxygen.

Referring now to Fig. 5, describe SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite website 20.Within the system, in steam/oxygen mixture, the percentage of oxygen is 20.In this case, the oxygen 47 of 17.6MMSCFD or 672 metric ton/day is delivered to described satellite; The pure CO discharged ₂107 is 17.6MMSCFD; Gas fuel 53 from infrastructure device 10 to described satellite is 4.17MMSCFD; Thinner+recovered water+pitch 123 is 29.54KBD; The water 33 of process is 9.54KBD; Make up water 78 is 0.95KBD; The water 88 disposed is 0.95KBD; ASU electricity 62 is 8.1MW; And boiler CO ₂113 is 4.17MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; 8) without extra water; 9) oxygen (95-97% purity) of 292.5kWh/ metric ton; 10) gas fuel is 1000BTU/SCF; 11) thinner/pitch ratio equals 1.0; With 12) pure carbon dioxide discharge gas equal use oxygen.

Referring now to Fig. 6, describe SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20.Within the system, in steam/oxygen mixture, the percentage of oxygen is 35.In this case, the oxygen 48 of 20.8MMSCFD or 794 metric ton/day is delivered to described satellite; The pure CO discharged ₂108 is 20.8MMSCFD; From central equipment 10 to the gas fuel 54 of described satellite equipment 20 be 2.28MMSCFD; Thinner+recovered water+pitch 124 is 25.2KBD; The water 34 of process is 5.2KBD; Make up water 79 is 0.5KBD; The water 89 disposed is 0.5KBD; ASU electricity 63 is 9.7MW; And boiler CO ₂114 is 2.28MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; 8) without extra water; 9) oxygen (95-97% purity) of 292.5kWh/ metric ton; 10) gas fuel is 1000BTU/SCF; 11) thinner/pitch ratio equals 1.0; With 12) pure carbon dioxide discharge gas equal use oxygen.

Referring now to Fig. 7, describe SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20.Within the system, in steam/oxygen mixture, the percentage of oxygen is 50.In this case, the oxygen 49 of 22.4MMSCFD or 855 metric ton/day is delivered to satellite 20; The pure CO discharged ₂109 is 22.4MMSCFD; Gas fuel 55 from central equipment 10 to satellite 20 is 1.32MMSCFD; Thinner+recovered water+pitch 125 is 23.0KBD; The water 35 of process is 3.0KBD; Make up water 80 is 0.3KBD; The water 90 disposed is 0.3KBD; ASU electricity 64 is 10.4MW; And boiler CO ₂115 is 1.32MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) pitch 95 increment of 10KBD; 7) steam of all injections equals recovered water; 8) without extra water; 9) oxygen (95-97% purity) of 292.5kWh/ metric ton; 10) gas fuel is 1000BTU/SCF; 11) thinner/pitch ratio equals 1.0; With 12) pure carbon dioxide discharge gas equal use oxygen.

From Fig. 2 to Fig. 7, the amount introducing the thinner 40 of satellite 20 is held constant at 10KBD.

Referring now to Fig. 8, the SAGD system extension describing existing 10KBD is SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20, and all steam capacities employed at existing satellite place, it means does not need Cemented filling gas fuel to described satellite.Within the system, in steam/oxygen mixture, the percentage of oxygen is 5.In this case, the oxygen 140 of 13.13MMSCFD is delivered to described satellite; The pure CO discharged ₂160 is 13.13MMSCFD; Thinner 41 from central equipment 10 to satellite equipment 20 is 5.34KBD; Thinner+recovered water+pitch 126 is 16.02KBD; The pitch 96 of increment is 5.34KBD; The water of process is 0.0KBD; Make up water 35 is 0.0KBD; The water 91 disposed is 0.0KBD; ASU electricity 65 is 6.11MW; And boiler CO ₂116 is 0.0MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) steam of all injections equals recovered water; 7) without extra water; 8) oxygen (95-97% purity) of 292.5kWh/ metric ton; 9) gas fuel is 1000BTU/SCF; 10) thinner/pitch ratio equals 1.0; 10) pure carbon dioxide discharges the oxygen that gas equals to use; With 11) employ all steam capacities at existing satellite place.

Referring now to Fig. 9, the SAGD system extension describing existing 10KBD is SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20, and all steam capacities employed at existing satellite place, it means does not need Cemented filling gas fuel to described satellite.Within the system, in steam/oxygen mixture, the percentage of oxygen is 9.In this case, the oxygen 141 of 24.6MMSCFD is delivered to satellite 20; The pure CO discharged ₂161 is 24.6MMSCFD; Thinner 40 from central equipment 10 to satellite equipment 20 is 10.0KBD; Thinner+recovered water+pitch 127 is 30.0KBD; The pitch 95 of increment is 10.0KBD; The water 35 of process is 0.0KBD; Make up water 81 is 0.0KBD; The water 91 disposed is 0.0KBD; ASU electricity 66 is 11.5MW; And boiler CO ₂116 is 0.0MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) steam of all injections equals recovered water; 7) without extra water; 8) oxygen (95-97% purity) of 292.5kWh/ metric ton; 9) gas fuel is 1000BTU/SCF; 10) thinner/pitch ratio equals 1.0; 10) pure carbon dioxide discharges the oxygen that gas equals to use; With 11) employ all steam capacities at existing satellite place.

Referring now to Figure 10, the SAGD system extension describing existing 10KBD is SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite website 20, and all steam capacities employed at existing satellite place, it means does not need Cemented filling gas fuel to described satellite.Within the system, in steam/oxygen mixture, the percentage of oxygen is 20.Can be readily seen that, in this case, the oxygen 142 of 62.0MMSCFD is delivered to described satellite; The pure CO discharged ₂162 is 62.2MMSCFD; Thinner 42 from central equipment 10 to satellite equipment 20 is 25.34KBD; Thinner+recovered water+pitch 128 is 76.02KBD; The pitch 97 of increment is 25.34KBD; The water 35 of process is 0.0KBD; Make up water 81 is 0.0KBD; The water 91 disposed is 0.0KBD; ASU electricity 67 is 29.0MW; And boiler CO ₂116 is 0.0MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) steam of all injections equals recovered water; 7) without extra water; 8) oxygen (95-97% purity) of 292.5kWh/ metric ton; 9) gas fuel is 1000BTU/SCF; 10) thinner/pitch ratio equals 1.0; 10) pure carbon dioxide discharges the oxygen that gas equals to use; With 11) employ all steam capacities at existing satellite place.

Referring now to Figure 11, the SAGD system extension describing existing 10KBD is SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20, and all steam capacities employed at existing satellite place, it means does not need Cemented filling gas fuel to described satellite.Within the system, in steam/oxygen mixture, the percentage of oxygen is 35.Can be readily seen that, in this case, the oxygen 143 of 134.2MMSCFD is delivered to satellite equipment 20; The pure CO discharged ₂163 is 134.2MMSCFD; Thinner 43 from central equipment 10 to satellite equipment 20 is 54.52KBD; Thinner+recovered water+pitch 129 is 163.56KBD; The pitch 98 of increment is 54.52KBD; The water 35 of process is 0.0KBD; Make up water 81 is 0.0KBD; The water 91 disposed is 0.0KBD; ASU electricity 68 is 62.5MW; And boiler CO ₂116 is 0.0MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) steam of all injections equals recovered water; 7) without extra water; 8) oxygen (95-97% purity) of 292.5kWh/ metric ton; 9) gas fuel is 1000BTU/SCF; 10) thinner/pitch ratio equals 1.0; 10) pure carbon dioxide discharges the oxygen that gas equals to use; With 11) employ all steam capacities at existing satellite place.

Referring now to Figure 12, the SAGD system extension describing existing 10KBD is SAGDOX satellite system of the present invention, wherein central equipment 10 is connected to SAGDOX satellite equipment 20, and all steam capacities employed at existing satellite place, it means does not need Cemented filling gas fuel to described satellite.Within the system, in steam/oxygen mixture, the percentage of oxygen is 50.In this case, the oxygen 144 of 248.9MMSCFD is delivered to satellite equipment 20; The pure CO discharged ₂164 is 248.9MMSCFD; Thinner 44 from central equipment 10 to satellite equipment 20 is 101.11KBD; Thinner+recovered water+pitch 130 is 303.3KBD; The pitch 98 of increment is 101.11KBD; The water 35 of process is 0.0KBD; Make up water 81 is 0.0KBD; The water 91 disposed is 0.0KBD; ASU electricity 68 is 115.9MW; And boiler CO ₂116 is 0.0MMSCFD.In addition in this case, feature comprises: 1) ETOR is 1.8; 2) OTSG is 80% efficiency; 3) steam is 1000BTU/ pound; 4) oxygen is 480BTU/SCF; 5) recovered water of 90% of central equipment is gone to as steam recycle; 6) steam of all injections equals recovered water; 7) without extra water; 8) oxygen (95-97% purity) of 292.5kWh/ metric ton; 9) gas fuel is 1000BTU/SCF; 10) thinner/pitch ratio equals 1.0; 10) pure carbon dioxide discharges the oxygen that gas equals to use; With 11) employ all steam capacities at existing satellite place.

Referring now to Figure 14, describe the SAGDOX central equipment 10 being connected to more than one SAGDOX satellite equipment 20.SAGDOX central equipment 10 is connected to each SAGDOX satellite equipment 20 by piping lane, thus allows the UNICOM between central SAGDOX equipment 10 and SAGDOX satellite equipment 20.

Table 2 provides for according to oxygen concentrations different in the mixture of the present invention's steam as described above and oxygen, typical SAGDOX injecting gas characteristic.

SAGDOX (35) be this method preferred embodiment.The SAGDOX (35) with following characteristic is described in Fig. 6:

1. oxygen/steam flow ratio is 0.538 (v/v).

2.84.5% calorie source is from oxygen (burning).

3., for the mixture of every SCF, heat is sent as 199BTU.

4., in order to send the energy of 1MMBTU, we need gas (steam and the O of 5MSCF ₂).

Comparison diagram 2 (SAGD) and Fig. 6 (SAGDOX (35)), find out following advantages:

1. the steam heating boiler capacity at satellite website place reduces to 5.2KBD from 33.7KBD steam and steams vapour – minimizing 85%.

2. fuel gas demand reduces to 2.3MMSCFD – minimizing 85% from 14.8MMSCFD.

3. Product pipeline volume reduces to 25.2KBD – minimizing 53% from 53.7KBD.Expected increment oil/water is separated capacity and there is similar minimizing.

4. the minimizing of the water supply of process is similar to Zheng Qi – minimizing 85%.There is identical minimizing in expected increment water treatment capacity.

5. the water disposed and make up water reduce to 0.5KBD – from 3.4KBD and reduce 85%.

6. the supply of thinner is unaffected.

If 7. catch and isolated pure CO ₂, so CO ₂discharge will reduce to 2.3MMSCFD – from 14.8 and reduce 85% (if by CO ₂isolate/be kept in bitumen reservoir, then can realize some benefits of catching).

Preferably, satellite equipment distance central equipment more than 10km, otherwise integrate described satellite and from central location supply steam will be economical.Meanwhile, the piping lane between described satellite website and described central equipment website should contain following fluid line:

1. the water of process, it is from central location.

2., for the oxygen of SAGDOX, it is from central location.

3. recovered water and pitch, it is from satellite website.

In addition preferably, using and push away water system as above and carry out Cemented filling containing the extraction fluid of thinner, is feasible.Fuel gas can available from Back Up Source, as the local provisioning from pipeline or gas well.For the certain situation hereafter enumerated, described piping lane can also comprise following fluid line:

1. natural gas boiler fuel, it is from central location.

2. thinner, it is from central location.

3. comprise the extraction fluid line of thinner, it is from satellite website.

4.CO ₂discharge feed channel, it is from satellite website.

The advantage of further explanation SAGDOX, the piping lane cost for SAGDOX satellite is all less than SAGD satellite in all embodiments.Assuming that the installation cost of pipeline is directly proportional to pipe diameter, table 7 outlines diameter in often kind of situation and accumulation diameter, assuming that the speed of liquid is 5ft/sec (3.4mph) and gas is 50ft/sec under 500psia, (Sarathi within the operational envelope of this oxygen in carbon steel piping, P.S., In-Situ Combustion Handbook, DOE, 1996).For we preferred situation SAGDOX (35), the capital cost fewer than the cost in SAGD situation 22% of piping lane.

Table 11 is also highlighted the advantage of SAGDOX.If we are by O/W emulsion, instead of the mixture of oil and thinner and water, be piped to central equipment from satellite equipment, then SAGDOX satellite can be even more obvious compared to the advantage of SAGD.

Even further, assuming that use the ASU oxygen unit of 2000 metric ton/day (oxygen train) to obtain the large-scale production of producing oxygen at central equipment place, table 4 shows the minimum satellite vehicle item dimensions saved for obtaining these.Described size changes to the 23KBD of SAGDOX (50) from the 61KBD of SAGDOX (5).For we preferred situation SAGDOX (35), minimum satellite vehicle is of a size of 25KBD.

See table 3, be highlighted considerable boiler cost savings when using SAGDOX.Such as, for the satellite of 10KBD, our satellite website boiler capacity is as follows with saving:

?	MMBTU/ hour	％SAGD	% saves
				SAGD	492	100	0
SAGDOX(5)	320	65	35
				SAGDOX(9)	246	50	50
SAGDOX(20	139	28	72
				SAGDOX(35)	76	15	85
SAGDOX(50)	44	9	91

If we do not add thinner at satellite website, so we may must add shearing to produce until arrive central facilities by stable oil-in-water (O/W) emulsion.Or we can add emulsion stabilizer (surfactant), make us can Cemented filling product safely.The viscosity of O/W emulsion does not relatively rely on oil viscosity, and low is enough to direct Cemented filling (Figure 13).

Meanwhile, to the minimum Capital expenditure at satellite website place with comprise following key element to the selection of satellite piping lane:

1. SAGDOX (50) the EOR technique at satellite website place.

2., for the pitch of O/W emulsion form and the pipeline of recovered water, it uses mechanical agitation, and if add stabilizing agent/surfactant if required at described satellite place.

3. obtain from another source the fuel gas being used for boiler, instead of independent pipeline is provided from central facilities.Supply for electricity is like this equally.

4. the water treatment expanded at central facilities place, oil/water are separated, produce oxygen and tankage (tankage).

5. propagation size is even as big as obtaining large-scale production.

Based on above, can following results be made:

1. the capacity increment of pair 10KBD satellite equipment changes from the 111KBD of 15KBD to the SAGDOX (50) of SAGDOX (5).Our preferred situation (SAGDOX (35)) creates the production increment (table 8) of 64.5KBD.

2., for expansion increment, oxygen demand is from 501 metric ton/day of SAGDOX (5) until the 9510 metric ton/day changes of SAGDOX (50).The oxygen demand of our preferred situation (SAGDOX (35)) is 5128 tonnes of/– produce oxygen large-scale production even as big as obtaining ASU.

3., based on " every barrel of pitch " (table 9), compared to our SAGD satellite or SAGD increment, our SAGDOX increment only produces 1/3rd of extraction fluid (comprising thinner) volume.Do not use extra water completely.Described increment is purely based on burning.

4. in addition, based on " every barrel of pitch ", and do not catch intimate pure discharge gas CO ₂, CO ₂discharge is 66% of every barrel of more extended asphalt.If caught by Exhaust Gas or be kept in reservoir, then the production of extended asphalt does not have corresponding CO ₂discharge.

Meanwhile, as mentioned above, the SAGDOX for new satellite equipment selects to have compared to SAGD the oxygen pipeline that oxygen to be delivered to satellite website by least one extra pipe road –.But other pipeline can have the capacity (Fig. 2 to 7) significantly reduced.Table 6 outlines the single volume of the 10KBD satellite equipment in each SAGD and SAGDOX situation.SAGDOX has the liquid capacity of reduction in all cases but has the gas capacity of increase.

If we expand existing SAGD satellite, it is particularly advantageous for so changing SAGDOX into, because:

1. we do not need to expand/build any extra boiler, the pipeline of water of process, water treatment capacity or fuel gas supply line.

2.SAGDOX increment can be that Xiang Dang great – is up to 111KBD increment, based on the SAGD satellite of existing 10KBD.

Fig. 8,9,10,11 and 12 and table 8 and 9 demonstrate the analysis SAGD satellite of 10KBD being carried out to SAGDOX expansion, assuming that be used to supply steam to SAGDOX in the existing steam capacity at described satellite place, and regulate propagation size to consume all steam had from the mixture of the steam in the scope of 5 to 50% (v/v) oxygen and oxygen.On Increment Basis, do not need additionally to generate for steam and water treatment capacity or for the treatment of the supply of water and the new pipe capacity of fuel gas.This simplify Capital expenditure and piping lane expansion.

Table 10 outlines when comparing SAGD and SAGDOX, the Capital expenditure project difference at satellite website and central location place, and advantages more of the present invention.

Other embodiments of the present invention will be apparent for those of ordinary skill in the art, and can be adopted by those of ordinary skill in the art and not deviate from spirit of the present invention.

table 1: Canadian steam EOR produces

Source:

1.First Energy Capital, on June 9th, 2011.

table 2:SAGDOX injecting gas characteristic

Wherein:

1. steam=1000BTU/ pound

2. oxygen=480BTU/SCF (Butler (1991))

3.0% oxygen=100% steam (SAGD)

table 3:SAGDOX performance factor

Wherein:

1. gas=oxygen and steam

2.ETOR=energy stone oil ratio

3.1000BTU/ pound steam; 489BTU/SCF oxygen

4.0% oxygen=100% steam (SAGD)

5. ETOR=1.18 under all situations

the large-scale production of table 4:SAGDOX satellite

Wherein:

1. ETOR=1.18 under all situations

Oxygen=the world scale of 2.2000 metric ton/day

3.1000BTU/ pound steam; The O of 480BTU/SCF ₂

table 5:10,000B/D satellite performance factor

Wherein:

1.0% oxygen=100% steam (SAGD)

2. ETOR=1.18 under all situations

3. gas=O ₂with steam (MMSCFD)

table 6: new 10KBD satellite compares

Wherein:

1. suppose according to Fig. 1 to 5

2.0% oxygen=100% steam (SAGD)

3.ETOR＝1.18

table 7: new 10KBD satellite: line size compares (D inch)

Wherein:

1. suppose that liquid carries out Cemented filling with the design of 5ft./sec

2. gas carries out Cemented filling with the linear velocity of the pressure of 500psia (34 atmospheric pressure) and 50ft./sec

3. diameter (inch)=(Q/420) of liquid line ^1/2, wherein Q=bucket/sky

4. diameter (inch)=(Z/0.801) of gas line ^1/2, wherein Z=is in the gas capacity of MMSCFD

5. volume is based on table 5

6.D=pipe diameter, inch

table 8: to the SAGDOX increment of the SAGD satellite of existing 10KBD

Wherein:

1. all SAGDOX increments use all steam from basic SAGD equipment, do not have new steam capacity at satellite place

2. there is no the extra water from SAGDOX

3. all ETOR=1.18

4. other ASU is 292.5kWh/ metric ton O ₂

5.1 tonnes of O ₂=26.173MSCF (1MMSCF=38.2 metric ton)

table 9: compare SAGDOX vs.SAGD increment

(increment to existing SAGD satellite)

?	SAGD	SAGDOX
			Pipeline	?	?
Total liquid (bucket/bucket pitch)	9.0	3.0
			Total gas (MSCF/ bucket pitch)	1.48	2.46
CO ₂ Discharge	?	?
			W/O catches (MSCF/ bucket)	1.48	2.46
W catches (MSCF/ bucket)	1.48	0
			The water used	?	?
(bucket/bucket pitch)	0.34	0
			The electricity (ASU) used	?	?
(kWh/ bucket pitch)	0	27.5

Wherein:

1. refer to table 7

2. SAGD is supposed that electricity is zero

table 10: Capital expenditure project

Wherein:

Pipeline (oxygen), less liquid and Geng Duo gas that 1.SAGDOX pipe road – mono-is extra

2.SAGDOX Guo Lu – is than SAGD much less

3.SAGDOX Qi body Chu Li – may not need, may be inessential

4. water treatment, separation and Chu Zhi – SAGDOX are less

5. Xin Jing – SAGDOX is more, O ₂injector and extraction gas remove and separately carry out

6. "Yes" represents to there is expenditure; "No" represents to there is not expenditure; " being (-) " represents when expenditure exists, and it is less than SAGD; " being (+) " represents that expenditure is more than SAGD; " be (?) " represent exist more branched go out, but uncertainly to measure accurately

table 11: new 10KBD satellite: line size compares (D inch)

(diluent free)

Wherein:

1.D=pipe diameter (inch)

2. suppose that liquid carries out Cemented filling with 5ft./sec

3. gas carries out Cemented filling with 500psia and 50ft./sec

4. for liquid D=(Q/420) ^1/2; Q=bucket/sky

5. for gas D=(Z/0.801) ^1/2; Z=MMSCFD gas

6. volume is based on table 5

Claims

1. A SAGDOX satellite system for recovering hydrocarbons, said system comprising a central SAGDOX site, at least one SAGDOX satellite site, and a pipeline corridor for communication between said central SAGDOX site and said SAGDOX satellite site, wherein The satellite system is designed to recover hydrocarbons using the SAGDOX method at the satellite sites and to transfer the recovered hydrocarbons to the central site.

2. The SAGDOX satellite system of claim 1, wherein said at least one SAGDOX satellite site is 9 km to 160 km from said central SAGDOX site.

3. The SAGDOX satellite system of claim 2, wherein said distance is 10 km to 100 km.

4. The SAGDOX satellite system of claim 1, wherein said central site comprises:

(a) oil/water separation unit,

(b) oil collection devices,

(c) water treatment plant, and

(d) oxygen generating means,

The satellite sites include:

(a) boilers for generating steam,

(b) at least one steam injection well,

(c) at least one oxygen injection well, and

(d) bitumen recovery wells,

And the pipe gallery includes:

(a) oxygen supply piping,

(b) treated water supply pipes,

(c) natural gas supply pipelines, and

(d) Bitumen and water recovery pipelines.

5. The SAGDOX satellite system of claim 4, wherein the recovered oil/water emulsion is further combined with a diluent at said satellite site, and said pipeline gallery further comprises a facility for delivering said diluent to said satellite site pipeline.

6. The SAGDOX satellite system of claim 4, wherein said satellite site further comprises exhaust gas treatment means for sequestering _CO2 and/or other produced gases.

7. The SAGDOX satellite system of claim 1, wherein each central unit has more than one satellite unit, said satellite units being connected to said central unit by one or more pipe corridors.

8. The SAGDOX satellite system of claim 7, wherein at said satellite site, a mixture of steam and oxygen is injected into a subterranean chamber in one of the following ways: said mixture is injected a) simultaneously into the same well, b) simultaneously into multiple well, or c) steam and oxygen are injected into separate wells for steam and oxygen, and said mixing occurs in said subterranean chamber.

9. The SAGDOX satellite system of claim 8, wherein the concentration of oxygen in said SAGDOX steam and oxygen mixture is 5% to 50% (v/v).

10. The SAGDOX satellite system of claim 8, wherein the concentration of oxygen in said SAGDOX steam and oxygen mixture is 10% to 40% (v/v).

11. The SAGDOX satellite system of claim 8, wherein the concentration of oxygen in said steam and oxygen mixture is about 35% (v/v).

12. A method of upgrading an existing SAGD facility by converting it to a SAGDOX satellite system, said method comprising:

Install an oxygen generation unit at the central SAGD facility,

Provide at least one remotely located SAGDOX satellite site, and

Between said central facility and said at least one satellite site at least one utility gallery is provided with additional pipelines for oxygen supply and pipelines for produced water and natural gas supply such that when said oxygen , water, and natural gas are supplied to the satellite sites, oxygen and generated steam are injected into the subterranean formation; and after recovery from the subterranean formation, an emulsion of bitumen and water is pumped back to the central site, whereupon the The bitumen is separated from the water, and the treated water is returned to the satellite site for steam generation.

13. A method for harvesting bitumen from satellite bitumen production sites and delivering bitumen to a central facility, wherein:

(a) placing said satellite site more than 10km from said central facility,

(b) connecting said satellite site to said central facility by a pipe gallery containing piping for providing treated water suitable for boiler application from said central site;

providing oxygen from said central facility to said SAGDOX satellite;

providing produced fluids (bitumen and water) from the satellite sites to the central facility, and

(c) Bitumen is recovered at said satellite site by the SAGDOX method.

14. The method of claim 13, wherein the production fluids (bitumen and water) are transported from the satellite sites to the central facility in a push water system.

15. The method of claim 13, wherein the produced fluids (bitumen and water) are delivered as a stabilized emulsion at the satellite site with added chemical stabilizers.

16. The method of claim 13, wherein diluent is also delivered to the satellite sites and mixed with production fluids (water and bitumen) for delivery back to the central facility.

17. The method of claim 13, wherein natural gas or fuel gas is also provided to the satellite sites from the central facility through the pipe gallery as boiler fuel.

18. The method of claim 17, wherein electricity is also delivered from the central facility to the satellite site, or from the satellite site to the central facility.

19. The method of claim 18, wherein a produced gas ( _CO2 ) pipeline is added to carry SAGDOX off-gas from the satellite site to the central facility.

20. The method of claim 13, wherein existing SAGD satellites are converted to SAGDOX using existing steam capacity at the site.

21. The method of claim 13, wherein produced water is separated at said satellite site, wherein diluted bitumen is transported back to said central facility generally free of excess water.