CN103573241A - Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process - Google Patents
Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process Download PDFInfo
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- CN103573241A CN103573241A CN201310348881.1A CN201310348881A CN103573241A CN 103573241 A CN103573241 A CN 103573241A CN 201310348881 A CN201310348881 A CN 201310348881A CN 103573241 A CN103573241 A CN 103573241A
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- sliding sleeve
- coiled tubing
- pressure balance
- well
- packer
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- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000004576 sand Substances 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to the technical field of oil field oil extraction engineering, and belongs to a horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process for an oil field. The invention effectively solves the problems that the prior art has small construction displacement, needs perforation before fracturing and cannot effectively implement the volume fracturing of the horizontal well. The method comprises the steps of firstly, setting the pressure balance sliding sleeve 1 along with the casing 3, cementing the well, conveying the whole tool string by using the coiled tubing 2, then injecting sand-carrying fluid for annular fracturing, and simultaneously, supplementing the fluid by using the choke 6 through the coiled tubing to keep the packer in a setting state. After the construction of the layer section is finished, backwashing is carried out through the sieve tube 11 and the check valve 9, and then the coiled tubing 2 is lifted up to carry out the construction of the next target layer. The invention has the advantages of sliding sleeve running along with the well completion pipe column and well cementing, no need of perforation, large fracturing construction discharge capacity, safety, environmental protection, high efficiency and the like.
Description
Technical field: the present invention relates to oil extraction in oil field field of engineering technology, belong to a kind of well cementation of the horizontal well casing pipe for oil field pressure balance sliding sleeve annular space and add sand multistage fracturing technology.
Background technology: the large discharge capacity of horizontal well, extensive, multistage volume fracturing can reduce the lower limit that reservoir is effectively employed, and the volume increase transformation of the fine and close oil-gas reservoir of hyposmosis is had great importance.Conventional levels well staged fracturing technology exist operational discharge capacity little, add sand small scale, pressure break hop count is limited, operating efficiency is low problem, and before pressure break, need effectively carrying out horizontal well volume fracturing of first perforation.In order to meet horizontal well volume fracturing construction needs, improve scale, intensity and the efficiency of fracturing reform, invented horizontal well casing pipe well cementation pressure balance sliding sleeve annular space and added sand multistage fracturing technology, for the volume increase of the fine and close oil-gas reservoir of hyposmosis, transformed new technical method is provided.
Summary of the invention: object of the present invention invent exactly a kind of with well cementation completion combine, without perforation, just can complete fracturing work, efficiency of construction is high, cost is low, and can significantly improve the discharge capacity of pressure break and add sand scale, the horizontal well casing pipe well cementation pressure balance sliding sleeve annular space that meets horizontal well volume fracturing construction needs adds sand multistage fracturing technology.
The present invention is by realizing with lower device: pressure balance sliding sleeve, coiled tubing, sleeve pipe, safety joint, centralizer, restriction choke, packer, hydraulic anchor, ball-and-seat, screen casing and guide shoe.The present invention realizes by following steps:
A, first by pressure balance sliding sleeve with in sleeve pipe lower going-into-well and well cementation completion;
B, then will be connected with in turn from top to bottom in the operating tool string lower going-into-well of coiled tubing, safety joint, centralizer, restriction choke, packer, hydraulic anchor, ball-and-seat, collar locator, screen casing and guide shoe, by collar locator, locate, packer is lowered into the pressure balance sliding sleeve centre position of pre-fractured interval;
C, with 1m
3/ min～2m
3the discharge capacity of/min is injected fracturing fluid in coiled tubing, and ball-and-seat is closed, and by restriction choke, makes packer setting, and the annular space injection fracturing fluid by coiled tubing and sleeve pipe, improves pressure, opens pressure balance sliding sleeve, and sand jet outlet is exposed;
D, continue to inject fracturing fluid to coiled tubing, keep packer setting, from the annular space of coiled tubing and sleeve pipe, inject fracturing fluid and carry proppant target zone is carried out to pressure break, until this target zone annular space sand fracturing construction finishes;
After e, this target zone pressing crack construction finish, then from sleeve pipe, inject fracturing fluid, ball-and-seat is opened, and from coiled tubing, returns out, carries out anti-circulation well cleanup, after anti-circulation well cleanup finishes, on the operating tool string that coiled tubing is connected, carries to new target zone;
F, repeating step c～e until complete the pressing crack construction of all target zones, propose operating tool string in production casing.
Pressure balance sliding sleeve designs for full-bore, and packer is the pony packer of hydraulic setting.
The present invention compared with the prior art tool has the following advantages:
The present invention utilizes the pressure balance sliding sleeve completion of cementing the well that is connected with sleeve pipe, without perforation, adopt packer to carry out packing in the pressure balance sliding sleeve centre position of the layer position of wish processing, break pressure balance open sliding sleeve, by casing annulus, inject load fluid and carry out pressing crack construction, and pressing crack construction discharge capacity is large, add sand scale and hop count unrestricted, meet the needs of multistage, extensive, volume fracturing construction, be a kind of horizontal well volume fracturing technology of safe, efficient, environmental protection.Simultaneously sliding sleeve can repeat switch, is beneficial to the later stage selectively to close while producing.
Accompanying drawing explanation: Fig. 1 is on-the-spot application schematic diagram of the present invention.
The specific embodiment: below in conjunction with accompanying drawing, the present invention is done to further auspicious stating: the present invention is by realizing with lower device: pressure balance sliding sleeve 1, coiled tubing 2, sleeve pipe 3, safety joint 4, centralizer 5, restriction choke 6, packer 7, hydraulic anchor 8, ball-and-seat 9, collar locator 10, screen casing 11 and guide shoe 12.The present invention realizes by following steps:
A, first by pressure balance sliding sleeve 1 with in sleeve pipe 3 lower going-into-wells and well cementation completion;
B, then will be connected with in turn from top to bottom in the operating tool string lower going-into-well of coiled tubing 2, safety joint 4, centralizer 5, restriction choke 6, packer 7, hydraulic anchor 8, ball-and-seat 9, collar locator 10, screen casing 11 and guide shoe 12, by collar locator 10, locate, packer 7 is lowered into pressure balance sliding sleeve 1 centre position of pre-fractured interval;
C, with 2m
3the discharge capacity of/min is to the interior injection fracturing fluid of coiled tubing 2, and ball-and-seat 9 is closed, and by restriction choke 6, packer 7 is set, and the annular space injection fracturing fluid by coiled tubing 2 and sleeve pipe 3, improves pressure, opens pressure balance sliding sleeve 1, and sand jet outlet is exposed;
D, continue to inject fracturing fluids to coiled tubing 2, keep packer 7 to set, from the annular space of coiled tubing 2 and sleeve pipe 3, inject fracturing fluid and carry proppant target zone is carried out to pressure break, until this target zone annular space sand fracturing construction finishes;
After e, this target zone pressing crack construction finish, then inject fracturing fluid from sleeve pipe 3, ball-and-seat 9 is opened, and from coiled tubing 2, returns out, carries out anti-circulation well cleanup, after anti-circulation well cleanup finishes, on the operating tool string that coiled tubing 2 is connected, carries to new target zone;
F, repeating step c～e, until complete the pressing crack constructions of three above target zones, by operating tool string from the interior proposition of production casing 3.
Pressure balance sliding sleeve 1 is for full-bore designs, and packer 6 is pony packers of hydraulic setting.
Claims (2)
1. horizontal well casing pipe well cementation pressure balance sliding sleeve annular space adds sand multistage fracturing technology, and above-mentioned technique is by realizing with lower device: pressure balance sliding sleeve (1), coiled tubing (2), sleeve pipe (3), safety joint (4), centralizer (5), restriction choke (6), packer (7), hydraulic anchor (8), ball-and-seat (9), collar locator (10), screen casing (11) and guide shoe (12); It is characterized in that: above-mentioned technique realizes by following steps:
A, first by pressure balance sliding sleeve (1) with in sleeve pipe (3) lower going-into-well and well cementation completion;
B, then will be connected with in turn from top to bottom in the operating tool string lower going-into-well of coiled tubing (2), safety joint (4), centralizer (5), restriction choke (6), packer (7), hydraulic anchor (8), ball-and-seat (9), collar locator (10), screen casing (11) and guide shoe (12), by collar locator (10) location, packer (7) is lowered into pressure balance sliding sleeve (1) centre position of pre-fractured interval;
C, with 1m
3/ min～2m
3the discharge capacity of/min is injected fracturing fluid in coiled tubing (2), ball-and-seat (9) is closed, by restriction choke (6), packer (7) is set, annular space by coiled tubing (2) and sleeve pipe (3) injects fracturing fluid, improve pressure, open pressure balance sliding sleeve (1), sand jet outlet is exposed;
D, continuation are injected fracturing fluid to coiled tubing (2), keep packer (7) to set, from the annular space of coiled tubing (2) and sleeve pipe (3), inject fracturing fluid and carry proppant target zone is carried out to pressure break, until this target zone annular space sand fracturing construction finishes;
After e, this target zone pressing crack construction finish, from sleeve pipe (3), inject again fracturing fluid, ball-and-seat (9) is opened, from coiled tubing (2), return out, carry out anti-circulation well cleanup, after anti-circulation well cleanup finishes, on the operating tool string that coiled tubing (2) is connected, carry to new target zone;
F, repeating step c～e until complete the pressing crack construction of all target zones, propose operating tool string in production casing (3).
2. horizontal well casing pipe well cementation pressure balance sliding sleeve annular space according to claim 1 adds sand multistage fracturing technology, it is characterized in that: pressure balance sliding sleeve (1) is for full-bore designs, and packer (6) is the pony packer of hydraulic setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348881.1A CN103573241A (en) | 2013-08-06 | 2013-08-06 | Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348881.1A CN103573241A (en) | 2013-08-06 | 2013-08-06 | Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process |
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| CN103573241A true CN103573241A (en) | 2014-02-12 |
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| CN201310348881.1A Pending CN103573241A (en) | 2013-08-06 | 2013-08-06 | Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939076A (en) * | 2014-04-23 | 2014-07-23 | 西安威盛电子仪器有限公司 | Pressure and flow regulator in fracturing construction |
| CN104790951A (en) * | 2015-03-12 | 2015-07-22 | 大同煤矿集团有限责任公司 | Method for weakening high hard roof having distance of 100-350m to coal seam, and apparatus thereof |
| CN104912535A (en) * | 2015-05-29 | 2015-09-16 | 中国石油天然气股份有限公司 | Multi-cluster fracturing sliding sleeve in section |
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN105986802A (en) * | 2015-02-13 | 2016-10-05 | 中国石油天然气股份有限公司 | Method of downhole fracturing |
| CN106223898A (en) * | 2016-09-27 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | Two horizontal well cementing and completion integrated pipe column devices that open |
| CN106337667A (en) * | 2016-09-27 | 2017-01-18 | 中国石油集团川庆钻探工程有限公司 | Secondary-exploitation horizontal well cementing and completion construction method |
| CN106351605A (en) * | 2016-09-27 | 2017-01-25 | 中国石油集团川庆钻探工程有限公司 | Well drilling method for two-section horizontal well |
| CN105822252B (en) * | 2015-01-04 | 2018-09-04 | 中国石油天然气股份有限公司 | Well cementation pipe column combination and well cementation method |
| CN111472738A (en) * | 2020-03-12 | 2020-07-31 | 中国石油天然气股份有限公司 | Switchable well cementation sliding sleeve water control fracturing method for horizontal well |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939076A (en) * | 2014-04-23 | 2014-07-23 | 西安威盛电子仪器有限公司 | Pressure and flow regulator in fracturing construction |
| CN103939076B (en) * | 2014-04-23 | 2016-05-18 | 西安威盛电子科技股份有限公司 | Pressure flow adjuster in a kind of pressing crack construction |
| CN105822252B (en) * | 2015-01-04 | 2018-09-04 | 中国石油天然气股份有限公司 | Well cementation pipe column combination and well cementation method |
| CN105986802A (en) * | 2015-02-13 | 2016-10-05 | 中国石油天然气股份有限公司 | Method of downhole fracturing |
| CN105986802B (en) * | 2015-02-13 | 2018-12-25 | 中国石油天然气股份有限公司 | Method of downhole fracturing |
| CN104790951A (en) * | 2015-03-12 | 2015-07-22 | 大同煤矿集团有限责任公司 | Method for weakening high hard roof having distance of 100-350m to coal seam, and apparatus thereof |
| CN104912535B (en) * | 2015-05-29 | 2017-09-01 | 中国石油天然气股份有限公司 | Multi-cluster fracturing sliding sleeve in section |
| CN104912535A (en) * | 2015-05-29 | 2015-09-16 | 中国石油天然气股份有限公司 | Multi-cluster fracturing sliding sleeve in section |
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN106351605A (en) * | 2016-09-27 | 2017-01-25 | 中国石油集团川庆钻探工程有限公司 | Well drilling method for two-section horizontal well |
| CN106337667A (en) * | 2016-09-27 | 2017-01-18 | 中国石油集团川庆钻探工程有限公司 | Secondary-exploitation horizontal well cementing and completion construction method |
| CN106223898A (en) * | 2016-09-27 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | Two horizontal well cementing and completion integrated pipe column devices that open |
| CN106223898B (en) * | 2016-09-27 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Two horizontal well cementing and completion integrated pipe column devices that open |
| CN111472738A (en) * | 2020-03-12 | 2020-07-31 | 中国石油天然气股份有限公司 | Switchable well cementation sliding sleeve water control fracturing method for horizontal well |
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Application publication date: 20140212 |