CN105840155A - Large power magnetostriction material downhole vibration oil increasing technical method - Google Patents
Large power magnetostriction material downhole vibration oil increasing technical method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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Abstract
The invention relates to the disaster and resource and environment field, and specifically relates to the large power magnetostriction material downhole vibration oil increasing technical method comprising the detail technical steps of vibration equipment body, power equipment, equipment connection, equipment construction technology, and construction process. An underhole vibrator in the prior art can generate high temperature exceeding equipment up limit under the electromagnetism excitation, so production cannot last; the novel method can solve said problems, and allows the vibration equipment to contentiously work nearby an oil and gas reservoir under the large power electromagnetic field state; the method can use a high temperature anti-corrosion giant magnetostriction material vibrator to serve as the underhole vibration equipment, and can work in oil field so as to improve oil filed single well yield, thus providing novel means for oil and gas well later yield increase.
Description
Technical field
The present invention relates to disaster and resource and environment field, be specifically related to high-power magnetostrictive material down-hole and shake
Dynamic increasing oil tech method.
Background technology
Low-frequency vibration oil recovery technique be utilize down-hole or ground vibration source to produce powerful low-frequency vibration wave field (frequency exists
A few to tens of hertz) oil reservoir is carried out large area vibration processing, with reach de-plugging, increasing yield and injection, reduction producing water ratio,
Improve a kind of Physical oil recovery measure for the purpose of oil well recovery ratio.
Producing low-frequency vibration field method a lot, whether which kind of method has common theoretical basis--low-frequency vibration
Recovery ratio can be improved.1948, oil field, one, Ciscaucasia of the former Soviet Union, after one earthquake, yield added
45%；1977, people is had to have studied the displacement of reservoir oil situation in saturated back-up sand rock core with a kind of electromagnetic vibrator,
Find that excitation substantially accelerates fluid and penetrates into the process (vibration capillary effect) of capillary tube.Nineteen ninety, have
Oil well is processed by people with controlled source, uses frequency 17Hz-18Hz, and after process, oilwell produced fluid amount substantially increases
Add.The vibration oil production technique of Australia can improve oil recovery rate, increases well yield 10%-35%, can drop
Low water content, is most economical method, it is adaptable to most of oil fields.
Domestic have also been developed multiple vibration source, carry out vibration unplugging and vibrating oil production test.Xi'an shiyou University
High enegry gas fracturing, the self-excitation wave of University of Petroleum recovers the oil, the electric pulse of Henan Oil Field etc. is down-hole vibration source.
Surface energy source mainly has State Seismological Bureau and the single-wheel of Liaoning seismic survey design and research institute and two-wheel focus etc..
Dawn oil recovery factory, Liaohe River intrasonic controlled source, the contrasted oil well 155 mouthfuls that vibration involves, effective well 116
Mouthful, total effective rate 75%, average amount of increase in production is 20%-60%, accumulative incremental oil production 9034 tons, input and output
Ratio is 1:16.
Above-mentioned technology has the obvious disadvantage that.The controlled source of earth shock device essentially seismic prospecting or
Mechanical impact formula focus, not only service life is short, fragile, has undesirable effect environment, and due to
Distance oil reservoir is remote, and the energy of vibrations is weak, it is difficult to reach to increase oil purpose；Downhole hardware equipment easily damages oil well
Sleeve pipe, and be difficult to work continuously, affect normal oil producing operation during particularly device is arranged to oil well.Mesh
Before, application vibration oil production technique increases the activity of oil well output and is substantially at halted state.
Thinking, above-mentioned technology is difficult to the reason played a role in oilfield stimulation, is not that vibration increases oil
The problem of mechanism own, main or vibrating device and detail design problem.
Summary of the invention
In order to solve above technical problem, the invention provides a kind of high-power magnetostrictive material underground vibrating
Increase oil tech method.
High-power magnetostrictive material underground vibrating provided by the present invention increases oil tech method, comprises following step
Rapid:
(1) electromagnetic excitation high temperature corrosion-resisting giant magnetic materials vibrator is fabricated to diameter less than 100cm's
Tubular structure；
(2) 380V oil field power current is connected to numerical control and frequency conversion box device, and numerical control with the effect of frequency conversion box is
Oil field is commonly used 380V/50Hz power current and is transformed into the power current of frequency-adjustable, cable control can be passed through simultaneously
System, the duty of monitoring underground vibrating device；
(3) power current after being connected to described frequency conversion box device frequency conversion passes through power cable through water injection well valve
It is transported to underground vibrating device；
(5) fix special bayonet socket at water injection well valve ground and the underground part of cable to be separated, prevent water filling
Time occur reveal；
(6) power and holding wire are fastened with cable；
(7) low-frequency vibration generator is fixed to drilling rod top, and transfers at 2 meters of perforating site top；
(8) start vibrator and adjust operating frequency to stratum frequency of vibration so that it is work one week or the longer time.
High-power magnetostrictive material underground vibrating provided by the present invention increases oil tech method, and described down-hole shakes
Dynamic device preferred high temperature corrosion-resisting giant magnetic materials, is placed in water injection well in oil fields and works, it is achieved oil well production increasing mesh
Mark.
High-power magnetostrictive material underground vibrating provided by the present invention increases oil tech method and can be applicable to
The increase water yield of civilian well or hot well, SANDSTONE URANIUM DEPOSITS produce in increase fluid injection and adopt liquid.
High-power magnetostrictive material underground vibrating of the present invention increases the advantage of oil tech method: 1. distance
Reservoir is near, can directly encourage reservoir；2. frequency of vibration is adjustable, finds the frequency resonated in applicable stratum；3. device
Light, surrounding is not produced any environmental influences；4. Oscillation Amplitude is big, affects volume big, can be directly to oil
Around well, oil bearing bed encourages.Thus, the shortcoming that instant invention overcomes conventional vibration oil-extracting apparatus, tool
There is the technical advantage of uniqueness, can be that oilfield stimulation provides a kind of utility services instrument.
Accompanying drawing explanation
Fig. 1 oil pumper, insert pump oil recovery schematic diagram；
The tubular column structure figure of Fig. 2 down-hole concussion generator；
Fig. 3 production tree end cap keeps sealing schematic diagram by cable；
Fig. 4 tubing hanger passes through cable schematic diagram；
Fig. 5 vibrator and the connection diagram of cable；
Fig. 6 cable and relevant Fixed Design schematic diagram；
Fig. 7 field conduct schematic flow sheet.
Detailed description of the invention
The present invention is further elaborated below in conjunction with the accompanying drawings:
One, power set
There are two kinds of oil wells, exploratory well and development well in oil field.Exploitation aspect is mainly producing well and water injection well.Adopt
The gentle body of oil well produced liquid, water injection well injects liquid in reservoir.
Producing well is divided into flowing well and nonflowing well.Flowing well is the producing well at oil field initial stage, and stratum energy fills
Foot, production of hydrocarbons disclosure satisfy that oil field needs, the seldom measure of going up, and various increasing yield and injection measures are substantially pin
To nonflowing well and water injection well.Therefore, clapp oscillator is mainly for the volume increase of non-blowing producing well, de-plugging
Augmented injection with water injection well works.
Each oil field, whole nation nonflowing well recovers the oil and mainly uses mechanical oil recovery method.Mechanical oil recovery method mainly has trip
Liang Guan, insert pump, downhole electric oil-immersed pump, screw pump, jet pump etc..Their common feature is to need
Want driven by power.The transformator of onsite application typically has three kinds of types of attachment, star-like, triangular form/star-like, star
Type/triangular form.Transformer voltage grade is respectively, primary 6000 volts, and in secondary, pressure lies prostrate for 500-2500, low
Pressure is 380 volts.Major part uses the shunting switch on regulation transformator, obtains required voltage.For
From the point of view of oil pumper, the power of motor is at 5-75 kilowatt, and rated voltage is 380 volts, and electric current is 12-140A, power
Factor is 0.88.The power of electronic diving pump is 5-150 kilowatt, and conventional is 50-100 kilowatt, and voltage is
280-2200 lies prostrate, and electric current is 13-60A.Therefore, from electric power is equipped with, oil field electric power system meets vibration and occurs
The voltage of device, electric current, power use the requirement of frequency.
Therefore the conventional oil well vibration oil-extracting apparatus electric power system of design is:
(1) 380V oil field common voltage；
(2) 30 kilowatts of transformators it are available for；
(3) 3000 meters of power high-temperature high-voltage cables；
(4) electric winch power is gone into the well equipment；
(5) servo motor and corrective devices；
(6) electronic control system of equipment.
Two, the tubular column structure of underground equipment
In order to coordinate water injection well vibration construction, use vibration machine tubing string spline structure, the most generally note
Well, generally noting when, substantially uses blank tubing tubular column structure, to bottom oil reservoir under tubing shoe
The position of 10-15 rice.Rod structure is: oil is mended according to height+tubing hanger and connects short circuit length+oil pipe+oil pipe change
Button short circuit length+tubing shoe length.Downhole low-frequency vibration generator (water injection well) augmented injection tubular column structure is at this base
Changed on plinth.
Structure designs:
1. the connection with production tree designs
Key problem in technology:
Pressure grade: meet technological requirement under water filling, it is ensured that at the special Christmas tree wellhead of 50-35MPa.
Big four tubing hanger requires to pass through cable, and four-way lid cable grip seals.
Down-hole concussion generator form construction design:
The size of overall dimensions water injection well the to be adapted to casing inner diameter of audio oscillator.Water injection well in oil fields has two kinds
" minimum diameter is 121.4mm to sleeve pipe: i.e. 51/2 for sleeve pipe, external diameter 127mm；7 " sleeve pipe, external diameter
177.8mm, minimum diameter is 150.4mm.A kind of sleeve pipe also having offshore oil warp conventional is: 95/8 " set
Pipe, external diameter 244.5mm, internal diameter 222.43m.Therefore, the external diameter of low frequency vibration generator to be considered is not larger than
100mm.Length it is also contemplated that the jointing of low-frequency oscillation generator and water-filling oil pipe, its joint less than 8 meters
Form meets button-type and uses sleeve A PI standard.
Clapp oscillator designs with the connection of cable:
Cable and clapp oscillator High Temperature High Pressure to be born and corrosion of liquid in oil reservoir.Require cable
Under link hot conditions be can guarantee that with generator reliable and stable, this is very important, all previous down-hole electricity
Driving means is all not resolve joint to connect and lead to the failure.Normal practice: use the spy of 60-100 rice
The different little cable of high temperature picks out from the inside of clapp oscillator, the most again with common downhole electric pump cable and
The little cable of special high temperature connects.
Cable designs with the connection of cable:
High Temperature High Pressure and corrosion-resistant should be considered, again it is important to note that mode of connection and airtight waterproof.Use
On high-strength alloy copper pipe two joints of set, re-use special tool(s) extruding and make copper pipe necking down staple joint.So
Afterwards with several high intensity, dielectric high performance tape composite winding ten which floor, finally use alloy armor cortex be wound around,
Make joint identical with the strength dielectric degree of cable.
Electric wire selection:
Rated voltage: [1.8/3kv], [3.6/6kv]
Model specification: polyimides-F46 composite membrane-ethylene-propylene rubber external insulation and the naked steel band of sheath chain armouring oil-immersed pump
Jump lead, armour micromicro selects galvanized steel strip or stainless steel band.
Performance indications:
Use directive/guide
A. cable laying minimum temperature-30 DEG C, minimum bending radius 500mm.
B. cable should be parallel to oil pipe and colligation is firm.
C. cable is gone into the well or is strictly on guard against during gug to beat and turns round and damage.
Strain relief clamp:
Cable is mainly bundled on oil pipe with electric cable clip after going into the well, often next root oil pipe 2-3 to be bundled
Individual clamp, tap hoop clamp and oil pipe body clamp.
Three, well type is preferred
1. application mechanical oil well shortcoming
Mechanical oil well is the main production type in oil field.First it is pipe, insert pump and screw pump.These three
Tubular column structure essentially identical, drive at well head, sucker rod makees transmission power, drives down-hole pump work.Under
Enter the degree of depth within 3000 meters, have the requirement of submergence.If directly utilizing Production Wells tubing string, shaking
Swing generator and be arranged on the bottom of tubing string, then will have a certain distance with oil reservoir, affect clapp oscillator
Penetration capacity；And the normal running conditions of clapp oscillator is less than 150 degree of temperature environments, owing to not having
There is circulation canal, be difficult to cooling, it is impossible to ensure that clapp oscillator works under constant formation temperature environment.
On the other hand, power system cable to be passed through is delivered to down-hole, also can increase tubular column structure and underground work
And the complexity of management, estimate do so, oil field is beyond affordability, it is possible to can make the experimental work can not be just
Often implement.Therefore, pipe, insert pump and screw pump are equipped with three kinds of tubular column structures of clapp oscillator volume increase, make
Industry is complicated, needs more complete sets of Techniques during operation, and cost is high, and the initial stage is difficult to carry out the work.
Electric submersible pump: the tubular column structure that electric submersible pump recovers the oil is to connect under electronic oil extraction pump by production tube
Enter oil well, invade liquid level about 300 meters, connect downhole electrical motor and ground control cabinet, cable with cable
It is bundled on oil pipe.Surface power drive electricity drives centrifugal pump work by switch board and cable power transmission to motor, motor
Make, it is achieved recover the oil.
If clapp oscillator is connected with electric submersible pump and goes into the well the most feasible, two key technologies need to solve.
The liquid that can the temperature field that first clapp oscillator produces be discharged by pump cools to less than 140 degree, and
Need steady temperature, otherwise can affect the normal work of electric submersible pump motor and clapp oscillator；It two is cable
Can specific electric load safety, bear bigger electric current and voltage.Solve the two technical problem, need to carry out
Field experimentation and research supporting technology scheme.
Other mechanical oil production model oil recovery factory such as jet pump is almost rarely employed, and does not has practical significance.
For above-mentioned situation, under the conditions of mechanical oil recovery method, the second of clapp oscillator to be realized volume increase
Individual approach, it is simply that trip out tubing string, rethinks the method entering oil reservoir under clapp oscillator, and do so can produce
Series of problems: one be how under, entering oil reservoir if imitating under logging cable line or other method, shaking
Swing generator power big, the research of will again tackling key problems such as the power of cable, hot strength, feeding winch,
Reality is not have the most supporting product, relatively costly；Even if two is to have reached the condition of going into the well, vibration occurs
Device effect cycle time length in various degree affect oil well output, therefore, oil field machinery oil produce
Under conditions of, the down-hole experimental duties of clapp oscillator to be completed, it is necessary to carry out various technique preparation further
Work.
2. the advantage applying water injection well
Water injection well is the producing well that reservoir supplements displacement of reservoir oil energy.Field area tuber according to oilfield development program use three,
Four, five, six, seven, eight, 9 methods arrange well pattern.Water injection well productive prospecting is real with clapp oscillator down-hole
Testing directly related, its liquid injected in oil reservoir, is treated clear water or formation water, temperature
Being usually 20-40 degree, the water yield of injection and speed are 20-200 side/24 hour, inject water and enter ground
Layer.If selecting well, operation technique method proper, it becomes possible to realize generation in cooling clapp oscillator work
Temperature, and obtain stationary temperature field.Owing to the tubular column structure of water injection well is relatively easy, generally,
Require under oil pipe is tiltedly to 10-15 rice below oil reservoir, it is easy to clapp oscillator as oil reservoir in the middle part of, and
Oil field development well spacing is substantially in the range of 50-300 rice, thus, clapp oscillator wavefield energy can
Penetrate oil reservoir uniformly, cover up-and-down boundary, the beneficially oil of clapp oscillator lateral penetration water injection well connection
Well.So augmented injection production-increasing function is all served for well, oil well, kill two birds with one stone.The more important thing is
Clapp oscillator can reach the several months even more than 1 year in the underground work time, not only contributes to oil field raw
Produce, and the experimental data that the most long-time observation acquisition effect of increasing production, effect duration etc. is important, for summing up
Seek production law and stable, reliable data are provided.Additionally also has a favourable condition, it is simply that Ke Yixuan
Select the opportune time of water injection well workover treatment, imitate down-hole electricity and dive the tubular column structure mode of oil extraction pump, work side
Method completion, carries out the work of clapp oscillator water injection well stimulation in time, reaches the purpose of field experimentation.Therefore,
Select water injection well to carry out the experiment operation of clapp oscillator, neither affect water filling, also can reach clapp oscillator
The experiment purpose of intensified injection of wells, oil well production increasing and agent for improving oilfield recovery, it should be preferably to select.
In sum, it is concluded that
1) oil field electric power system disclosure satisfy that clapp oscillator required voltage, electric current, power, frequency want
Ask.
2) if carrying out clapp oscillator volume increase at the producing well of pipe, insert pump and three kinds of tubular column structures of screw pump
Experiment, operation is complicated, runs and needs more complete sets of Techniques, and cost is high, and the time is long, and the initial stage is difficult to carry out
Work.
3) if taking to trip out original production tubing string, empty well cylinder, modeling logging cable or other form and shaking
Swing the method entering oil reservoir under generator, it is also possible to achieve the goal.But so experimental program, lacks vibration and sends out
Raw device down-hole action time and cycle data, be difficult to judge to shelve time and stimulation cycle in oil well,
If taking oil well for a long time to test, will directly ring oil well output, oil recovery factory is beyond affordability, therefore
Experiment has been difficult to.
4) construction operation in water injection well.
If tubular column structure and the working method with reference to down-hole electric submersible pump, it becomes possible to solve instrument and go into the well and obtain
The working environment of equilibrium temperature, and meet the problems such as vibration wave penetration range, neither affect water injection well
Water filling, can complete again on-the-spot increasing yield and injection experimental work, it should be preferably to select, it may be considered that concrete
Field experimentation scheme.
Select well should have a following condition:
1) oil, well near wellbore zone have substantially pollution (impurity, blocking, water lock, gas lock etc.).
2) oil well crude oil viscosity is high relatively, poor fluidity.
3) there is liquid inhibition effect in oil, water oil reservoir near wellbore zone, and filtrational resistance is big.
4) stratum shale content is relatively low.
5) formation sand production is more weak, or does not shakes out.
6) oil well production is normal, does not absorbs water or the difference that absorbs water after well tuberculosis.
7) well of seperated layer water injection is not the most selected.
8) well temperature is generally not more than 90 degree.
9) water injection rate of well is larger, minimum more than every day injection rate 20 side.
10) unaccommodated well has: leakage, water logging, sleeve pipe guest performer, also high pressure low permeability heavy oil wells.
Four, lower well operations implements technology
1. the preparation before low-frequency vibration generator is gone into the well and requirement
1) correction derrick, hook alignment well head.
2) former well casing post is tripped out, clean by steam purge.
3) drifting.Drift size gauge tool length is not less than 1m, and external diameter is less than casing inner diameter 3-5mmm, removes smoothly
Without blocked portion, the drifting degree of depth is to artificial bottom of a well.
4) pit shaft scraping.If drifting is hampered, it has been determined that be dirty, pipe hanger of trapping is cut device extension of going into the well and is cut set
Inside pipe wall, eliminates incrustation scale and other booty of casing wall, it is ensured that the latus rectum of sleeve pipe.
5) cable drum is arranged at well head 15-20m, with well head and working rig line of centres angle be 30～
45°。
6) cable leading block should be fixedly attached to, away from ground 8-10m eminence, become with well head, cable drum
One operation plane.
7) unit is placed in the relative direction of directive wheel in order.
8) open end protecting cover, by its terminal wire short circuit, survey three respectively with circuit tester R × 1 Ω shelves
Phase D.C. resistance, unbalance factor is not more than 2%, removes wiring after having surveyed.Cable is measured with 2500V megameter
Three relatively and phase insulation resistance, should be greater than 2000M Ω, has surveyed and should discharge over the ground, and built protecting cover.
2. connect low-frequency vibration generator oil pipe and the operation of cable
1) casing insulation resistance is surveyed with megameter.
2) elevator is stuck in low-frequency vibration generator Hoisting Position, is sling, low frequency vibration during lifting
Dynamic generator lead-out wire must be directed at elevator indentation, there, it is ensured that cable is without prejudice.
3) sling first oil pipe, screw thread should be cleaned before docking, after drying, be coated with anaerobic adhesive, then manual the most right
Mouthful, tighten.When low-frequency vibration generator shell connects, operation work is with pipe wrench band tightly, never allows to use
Hydraulic tongs.For preventing cable bad, in docking operation, do not allow to rotate.
4) carrying out low-frequency vibration generator lead-out wire to be connected with cable, junction should be placed in low-frequency vibration generator
Lead-out wire overlength part cuts three of the wires length and staggers each poor 60mm, then removes external insulation layer 90mm, interior
Insulating barrier removes 25mm, if using copper pipe to connect, uses special caliper clamping.The process of cut cable and low frequency
Vibration machine lead-out wire is identical.Junction sand papering, cleans up.The joint processed is with poly-complete
Fluoro ethyl propene pressure-sensitive adhesive tape half-stack package 10 layers, then with politef pressure-sensitive adhesive tape half-stack package 6 layers, then use glass
Glass silk cloth pressure-sensitive adhesive tape half-stack package 1～2 layers, finally form with armour skin armouring.
5) fixing cable, low-frequency vibration generator lead-out wire, low-frequency vibration generator box cupling, the flat electricity of size
Cable joint up and down, at sand control joint, screen casing two ends 100mm, pump housing two ends and centre is each makes a call to a strain relief clamp
Son.
6) low-frequency vibration generator under.
(1) former Casing head of borehole is changed into the casing head of electric motor drive oil pump system tree.
(2) low-frequency vibration generator upper bit installs normally opened sliding sleeve.
(3) cable on tubing string outer wall, at the every upper and lower 0.2m of tubing coupling and in the middle of oil pipe, each beats
One strain relief clamp or protector, strain relief clamp should make cable armour skin slight deformation and don't damage cable insulation
Layer is principle.At gradient well, below tiltedly point, protector should be all used to protect cable.
(4) an insulation against ground resistance measured by every lower 6 oil pipes, and under oil pipe is whole, complete surveyed resistance all meets
Regulation requesting party can install well head.
7) standby points for attention are divided into
(1), when connecting unit, well head must be put cover plate, prevent trouble of lost tool in hole.
(2) should prevent bottom tubing spinning under during oil pipe, accomplish fluently back-up tong, every oil pipe joint hoop uses 1 up and down
Duplex protector or oil pipe joint bind round and use 1 in the middle of 1 strain relief clamp of each use at upper and lower 200mm, oil pipe
Simply connected protector or strain relief clamp, 6/h of lower oil tube speed limit.
(3) under, during low-frequency vibration generator, working rig and cable drum must respective synchronization run, and do not allow by oil
Pipe deadweight rotates with cable drum.
(4) must beat protector or strain relief clamp by assigned position, strain relief clamp degree of tightness wants suitable, it is to avoid damage
Cable.
3. open out the operation of downhole oscillation device
1) must follow strictly reinspection system before operation, D.C. resistance and insulation against ground resistance to unit are carried out
Measure and check, and make a record.
2) press regulatory requirements and derrick, cable drum and cable directive wheel are installed.
3) remove ground and connect cable, close master valve, terminal bolt on dismounting outlet line and flange.
4) remove production tree, with tubing nipple, tubing hanger is proposed well head, remove clamp.
5) when playing oil pipe, cable and oil pipe must be synchronize, steadily, prevent from scraping, damaging cable, remove strain relief clamp
The period of the day from 11 p.m. to 1 a.m, is careful not to damage cable armour skin and insulation, once finds cable fault, should carry out labelling in time also
Itemized record.
6) cable should fitly be wrapped on cylinder, forbids to beat and turns round and be staggered, origin or beginning 1.5m's to be reserved
Surplus.
7), after unit plays well head, low-frequency vibration generator is separated with oil pipe.
4. the installation of numerical control and frequency conversion tank and adjustment
1) install
2) cable is connected with numerical control variable frequency cabinet, and casing carries out ground connection.
3) checking that supply voltage is the most normal, send control power supply, detection driving voltage is the most normal.
4) power-off, after insulating protective plate is installed, can power transmission.
5) adjust.
High-power magnetostrictive material underground vibrating of the present invention increases the advantage of oil tech method: 1. distance
Reservoir is near, can directly encourage reservoir；2. frequency of vibration is adjustable, finds the frequency resonated in applicable stratum；3. device
Light, surrounding is not produced any environmental influences；4. Oscillation Amplitude is big, affects volume big, can be directly to oil
Around well, oil bearing bed encourages.Thus, the shortcoming that instant invention overcomes conventional vibration oil-extracting apparatus, tool
There is the technical advantage of uniqueness, can be that oilfield stimulation provides a kind of utility services instrument.
Claims (3)
1. a high-power magnetostrictive material underground vibrating increases oil tech method, it is characterised in that described big merit
Rate magnetostriction materials underground vibrating increases oil tech method and comprises the steps of
(1) electromagnetic excitation high temperature corrosion-resisting giant magnetic materials vibrator is fabricated to diameter less than 100cm's
Tubular structure；
(2) 380V oil field power current is connected to numerical control and frequency conversion box device；
(3) power current after being connected to described frequency conversion box device frequency conversion passes through power cable through water injection well valve
It is transported to underground vibrating device；
(4) fix special bayonet socket at described water injection well valve ground and the underground part of cable to be separated；
(5) power and holding wire are fastened with cable；
(6) low-frequency vibration generator is fixed to drilling rod top, and transfers at 2 meters of perforating site top；
(7) start vibrator and adjust operating frequency to stratum frequency of vibration so that it is work one week or the longer time.
High-power magnetostrictive material underground vibrating the most according to claim 1 increases oil tech method, its
Being characterised by, described underground vibrating device is high temperature corrosion-resisting giant magnetic materials.
3. an increase water yield for civilian well or hot well, SANDSTONE URANIUM DEPOSITS produce in increase fluid injection and adopt
The method of liquid, it is characterised in that described method comprises the high-power magnetostrictive described in claim 1 or 2
Material underground vibrating increases oil tech method.
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| CN106761649A (en) * | 2017-02-28 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | One kind is used for water injection well line pulse method for removing blockage |
| CN116335662A (en) * | 2023-03-30 | 2023-06-27 | 中国矿业大学 | A frequency conversion resonance strengthening method for increasing permeability of structural coal seams with multi-hole vibration drainage and pumping |
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