CN107905773A - The application method of all-metal screw pump Thickened oil injection-production integrated device - Google Patents
The application method of all-metal screw pump Thickened oil injection-production integrated device Download PDFInfo
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- CN107905773A CN107905773A CN201711131100.8A CN201711131100A CN107905773A CN 107905773 A CN107905773 A CN 107905773A CN 201711131100 A CN201711131100 A CN 201711131100A CN 107905773 A CN107905773 A CN 107905773A
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- steam injection
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- 239000002184 metal Substances 0.000 title claims abstract description 61
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 89
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 51
- 238000011084 recovery Methods 0.000 claims description 13
- 239000000295 fuel oil Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000036461 convulsion Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to a kind of application method of all-metal screw pump Thickened oil injection-production integrated device.Its technical solution is：Including flow string, fixing device, wellhead assembly, wellhead assembly is installed at the top of casing, the fixing device for installing above plug face, support flow string is fixed by fixing device, the flow string includes note collection/control apparatus, all-metal screw pump, pressure testing device and positioner, the top installation note collection/control apparatus of all-metal screw pump, lower part is installed on the securing means by positioner, and pressure testing device is installed between fixing device and all-metal screw pump.Beneficial effect is：First, frequent job execution is not required, when steam injection, need not raise and decentralize whole or part all-metal screw pump, reduce operating cost, the probability of happening of security incident caused by decreasing operation；Steam injection is flexible, it is not necessary to disposably inject substantial amounts of high temperature and high pressure steam to stratum, reduce due to the pressure of disposable injection steam it is excessive caused by security risk.
Description
Technical field
The present invention relates to a kind of petroleum industry extracting device of oil, more particularly to a kind of all-metal screw pump Thickened oil injection-production integrally fills
The application method put.
Background technology
During oil exploitation, viscous crude has special high viscosity and high-solidification point characteristic, in each of development and application
A aspect all runs into some technical barriers, and colloid, asphalitine and long chain paraffin cause mobility of the crude oil in reservoir and pit shaft
It is deteriorated, for widely used pumping well with pole, in heavy crude producing, since viscosity is excessive, paraffin content is big so that oil pipe
Oil flow channel reduces, the increase of the uplink and downlink resistance of rod string, and when down stroke horse head easily occurs and " fights " phenomenon, during upstroke
Beam rating increase, can make sucker rod stuck in oil pipe, or even cause the down-hole accident of rod broken when serious.In addition,
For the relatively low well of reservoir temperature, standing valve for oil-well pump, standing valve cover and its with lower portion since pressure is low, in production process
In be easily formed stifled well, and to be forced carry out well workover.
For electric submersible pump producing well, since electric immersible pump well discharge capacity is big, pressure is low at suction inlet, when reservoir temperature is relatively low
When, herein easy wax deposition and cause blade guiding wheel runner block, drilling fluid resistance increase, decline the discharge capacity of pump, while electricity can be made
The increase of machine load, it is serious to cause motor often to shut down, prevent electric pump unit from running well.
At present, steam thermal recovery mode is generally used to viscous crude and high solidifying oil exploitation both at home and abroad, that is, by well head
High temperature and high pressure steam is injected, then thickened oil recovery is carried out with the use of screw pump, when the advantages of protrusion of screw pump is pumped (conveying) medium
Do not form vortex, to the sticky insensitive of medium, can transfer of highly viscous medium, therefore, this is a kind of effective thickened oil recovery side
Formula.But the stator rubber bushing that existing screw pump uses, as chief component, the elastomeric material of use is usually fourth
Nitrile rubber (NBR).Under the rugged environment of oil field, screw pump stator elastomeric material by oil, between rotor abrasion and fatigue etc. because
The influence of element, easily makes stator rubber that ageing failure occur, limits the use of screw pump.Especially because injected from well head high
Warm high steam, it is easier to make ageing of rubber, reduce the service life of screw pump, this just forces screw bolt well in oil recovery process
In, it is necessary to proposed screw pump is overall by oil field operation construction from the casing of oil well, then, inject high temperature to oil well inside
The steam of high pressure, and carry out stewing well for a period of time, the 3rd step carries out back production, that is, again pumps rubber screw rod again by oil field
Job execution is by the casing of its tripping in oil well, and still, the depth of oil well lacks then tens meters, and at most hundreds of meters are even gone up kms,
This just consumes substantial amounts of activity duration and cost, therefore there is an urgent need to a kind of screw pump of all-metal, can bear high temperature steaming
Vapour, avoids screw pump from integrally proposing the high operating cost brought.
Chinese patent literature Publication No. 104847323A, patent name are《The integration of all-metal screw pump Thickened oil injection-production
Complexes》, including polished rod assembly, directly magneto driving head protective device, drive three-phase permanent-magnetic synchronous motors, high temperature and pressure
Seal assembly, special gas filling device, tubing head, casing head, surface pipe, oil pipe, torque tube, torque anchor, metal screw pump, help
Positive device, tail pipe, screw pump ground control cabinet；Polished rod assembly, magneto driving head protective device, straight drive are followed successively by from top to bottom
Three-phase permanent-magnetic synchronous motors, high temperature and pressure seal assembly, special gas filling device, tubing head, casing, torque tube, torque anchor, help
Positive device, tail pipe, oil pipe are sleeved in casing, and metal screw pump is in torque anchor；Screw pump ground control cabinet drives three-phase forever with straight
Magnetic-synchro motor connects.Metal stator is connected by above-mentioned patent with oil pipe, and metallic rotator is connected with sucker rod, realizes full gold
The stator and rotor of category.But the invention is when injecting steam, it is still desirable to which belt turn leaves screw pump on polished rod assembly
Stator, steam injection passage is opened, steam is then reinjected, again transfers polished rod assembly after the completion of steam injection, it is fixed that rotor is put into
In son, then recover the oil.But its there are the problem of be：Although screw pump need not be proposed to well head completely, one is simply above carried
Segment distance, it is possible to reduce activity duration, but still need and above carry the rotor portion of screw pump, and metallic rotator above carries every time
All metal stator may once be worn with decentralization, and its decentralization generally can all have error, and this results in all-metal
Rotor transfer each time all may to stator carry out primary collision, and then reduce screw pump service life, although the invention
Some technological means are also used to reduce its collision or abrasion, but there are still the possibility of abrasion or collision, reduce spiral shell
The service life of bar pump；In addition, above carrying for the rotor of screw pump needs large-scale hanging device to complete, which increases operation into
Sheet and the danger of construction.
Chinese patent literature number is 102877821A, and patent name is《Thickened oil steam-stimulated note adopts integrated apparatus》, bag
Driving device, steam injection oil recovery integral type well head, oil pipe, sucker rod, bimetal screw rod pump, cam anchor are included, driving device includes bottom
Seat, babinet, motor and motor cabinet, set oil well casing on steam injection oil recovery integral type well head, and oil well casing is set in outside oil pipe, oil
Bottom of the tube is connected with the stator of bimetal screw rod pump, and stator lower end is equipped with cam anchor, sucker rod, sucker rod lower end are equipped with oil pipe
It is connected with the rotor of bimetal screw rod pump, the upper end is connected with polished rod, and polished rod is sequentially connected with motor, and sealing is provided with base
Device, base lower end are connected with steam injection oil recovery integral type well head, and between base and steam injection oil recovery integral type well head be equipped with first every
Heat pad, base upper end are connected with babinet, and the second heat insulating mattress is equipped between base and babinet, and babinet is hinged with motor cabinet.This hair
It is bright that gas filling device and extracting device of oil is integrated, improve the production timeliness of heavy oil wells.But its problem of still having, is：This
Invention drives polished rod above to carry or transfer by adding motor, it is not necessary to using Large-scale Hoisting equipment, but still needs and passes through light
Carried on bar and rotor is moved up into a distance, steam injection passage is opened, then reinject steam, again by polished rod assembly after the completion of steam injection
Decentralization, rotor is put into stator, then is recovered the oil.The invention there are the problem of be：There is still a need for above carry the rotor of screw pump
Part, and every time raising and decentralizing for metallic rotator all metal stator may once be worn, although carry thereon and under
The process put is completed using motor and the integrated well head of steam injection oil recovery, is reduced error, is reduced the collision of rotor and stator
Probability, but this is not avoided that the abrasion to stator is transferred and above proposed to the rotor of all-metal each time still, so, it still can
Reduce the service life of screw pump.
The content of the invention
The purpose of the present invention is aiming at drawbacks described above existing in the prior art, there is provided a kind of all-metal screw pump thick oil filling
Adopt the application method of integrated device, it is not necessary to above carry or transfer rotor, but in addition add steam injection passage, by steam injection passage come
Complete steam injection and the institutional operation recovered the oil.
A kind of application method for all-metal screw pump Thickened oil injection-production integrated device that the present invention mentions, its technical solution are bags
Include procedure below：
A, assembling device and G.I.H：First in casing（1）Inner cavity tripping in fixing device（d）, then tripping in pressure testing device（c）With it is fixed
Position device（e）, then tripping in all-metal screw pump（b）With note collection/control apparatus（a）, in wellhead assembly（f）Top is installed by screw pump
Motor（b1）, and by the steam (vapor) outlet and wellhead assembly of steam boiler（f）Connection；
B, high temperature and high pressure steam is injected to underground：Steam boiler passes through wellhead assembly（f）To central tube（2）With rotor connecting rod
（3）Between double wall chamber injection high temperature and high pressure steam, the top of the cavity between casing and central tube closed by wellhead assembly,
High temperature and high pressure steam is along double wall chamber downlink, by slip ring（16）, loose collar（15）And retainer ring（14）Stop after, along
Steam injection hole（9）Into cylinder sleeve（7）With central tube（2）Between annular space, promote steam injection piston（10）With steam injection spring（11）Downlink,
Pressure release piston at this time（6）Close it is motionless, start to heavy oil tested layer inject high temperature and high pressure steam, steam injection a period of time after, steam
Boiler, which is stopped, carries out stewing well；
C, pressure release after stewing well：After stewing well, since the steam pressure of the heavy oil tested layer of underground is more than central tube（2）It is connected with rotor
Bar（3）Between double wall chamber pressure, steam injection spring（11）Promote steam injection piston（10）Uplink blocks cylinder sleeve（7）With central tube
（2）Between annular space, steam injection hole（9）It is closed；At this time, pressure release piston（6）The pressure born of top be more than the pressure release of lower part
Spring（8）Pressure, so promote pressure release piston（6）Downlink, and then open relief hole（5）, until after pressure balance, pressure release is lived
Plug（6）Return；
D, metal screw pump recovers the oil：Pressure release piston（6）After return, all-metal screw pump is opened at this time（b）, pass through rotor and stator
Cooperation drive reduce viscosity viscous crude be extracted, realize thickened oil recovery, until viscous crude viscosity be again increased to it is discontented
During the twitch of sufficient metal screw pump, step B and C are repeated, realizes that Thickened oil injection-production operates.
Preferably, in step A, all-metal screw pump（b）With note collection/control apparatus（a）Assembling and tripping in process include with
Lower process：By cylinder sleeve（7）With central tube（2）Connection is fixed, and installs pressure release spring（8）With pressure release piston（6）, then steam injection is installed
Piston（10）With steam injection spring（11）, the central tube of component will be installed（2）Lower end connection metal screw pump stator after, tripping in set
Pipe（1）Inner cavity；Again by loose collar（15）Tripping in central tube（2）Inner cavity, then in central tube（2）Inner cavity tripping in installation metal screw pump
The rotor connecting rod of rotor（3）, central tube（2）Upper end connection wellhead assembly, rotor connecting rod（3）Upper end be connected to screw rod
Pump motor（b1）；
Preferably, during assembling, by cylinder sleeve（7）Pass through connection bump（18）With central tube（2）Connection is fixed, by pressure release spring（8）
With pressure release piston（6）It is sequentially loaded into cylinder sleeve（7）With central tube（2）Upside annular space in, then by spacing ring（4）It is threadably secured
In cylinder sleeve（7）Top；In cylinder sleeve（7）With central tube（2）Downside annular space in install steam injection piston（10）With steam injection spring
（11）, and steam injection spring（11）Bottom and spring block（12）Connection.
The beneficial effects of the invention are as follows：First, frequent job execution is not required, it is not necessary to raise and decentralize whole all-metal
Screw pump, it is not required that above carry the screw pump rotor of segment, whole stator and rotor keep in situ motionless during steam injection, reduce work
Industry cost, the probability of happening of security incident caused by decreasing operation；Two are that of avoiding the rotor and stator of metal screw pump
Wear problem caused by due to above carrying or transferring, extends the service life of all-metal screw pump, thoroughly solves in operation
Maloperation problem may occur, be not in the collision problem of rotor and stator；Third, steam injection is flexible, it is not necessary to disposably to ground
Layer injects substantial amounts of high temperature and high pressure steam, reduce due to the pressure of disposable injection steam it is excessive caused by security risk, this
Invention can reduce the expense of construction and the time of operation, viscous crude be greatly improved according to the needs on stratum steam injection at any time
The efficiency of exploitation.
Brief description of the drawings
Structure diagram when attached drawing 1 is the underground installation of the present invention
Attached drawing 2 is the structure diagram for noting collection/control apparatus；
Attached drawing 3 is structure diagram when noting collection/control apparatus steam injection；
Attached drawing 4 is structure diagram when noting collection/control apparatus pressure release；
In upper figure：Note adopts integrated control device a, all-metal screw pump b, pressure testing device c, fixing device d, positioner e, well head
Device f, artificial bottom of a well g, plug face h, screw pump motor b1,
Casing 1, central tube 2, rotor connecting rod 3, spacing ring 4, relief hole 5, pressure release piston 6, cylinder sleeve 7, pressure release spring 8, steam injection
Hole 9, steam injection piston 10, steam injection spring 11, spring block 12, screw rod pump joint 13, retainer ring 14, loose collar 15, slip ring 16,
Metal seal 17, connection bump 18, pressure release seam 4.1.
Embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment 1, referring to the drawings 1 and 2, a kind of all-metal screw pump Thickened oil injection-production integrated device for mentioning of the present invention, its
Technical solution is：Including flow string, fixing device d, wellhead assembly f, the top of casing 1 is provided with wellhead assembly f, casing 1
Bottom be artificial bottom of a well g, artificial bottom of a well g tops are equipped with multiple plug face h, the fixing device for installing d above plug face h, by solid
Determine device d and fix support flow string, the flow string includes note collection/control apparatus a, all-metal screw pump b, pressure testing device c
With positioner e, the top installation note collection/control apparatus a of all-metal screw pump b, lower part is installed on by positioner e and fixed
On device d, and pressure testing device c is installed between fixing device d and all-metal screw pump b；Screw rod is installed on the wellhead assembly f
Pump motor, screw pump motor connect the rotor of all-metal screw pump b, the stator peace of all-metal screw pump b by rotor connecting rod 3
Mounted in the inner wall of central tube 2；The note collection/control apparatus a include pressure release piston 6, cylinder sleeve 7, pressure release spring 8, steam injection piston 10,
Steam injection spring 11, spring block 12, by 18 fix cylinder liner 7 of connection bump on the outside of the middle part of central tube 2, and in central tube 2
Subordinate side is equipped with steam injection hole 9, and upside is equipped with relief hole 5, is matched somebody with somebody in the lower part of the cylinder sleeve 7 by steam injection piston 10 and steam injection hole 9
Close and realize switch, the lower part of the steam injection piston 10 is connected by steam injection spring 11 with spring block 12；The top of the cylinder sleeve 7
Coordinate the switch for realizing relief hole by pressure release piston 6 and relief hole 5, and the lower part of pressure release piston 6 is installed on pressure release spring 8.
Retainer ring 14 is installed in the middle and lower part inner cavity of central tube 2, the outer wall of rotor connecting rod 3 is provided with slip ring 16,
Loose collar 15 is installed between retainer ring 14 and slip ring 16.
Wherein, the top of pressure release piston 6 is equipped with spacing ring 4, and the outer wall top of the spacing ring 4 is equipped with lug boss, passes through
Lug boss coordinates with cylinder sleeve 7, and the middle part of spacing ring 4 is equipped with the pressure release seam 4.1 of circular ring shape, gases at high pressure by pressure release seam 4.1 into
Enter the annular space between cylinder sleeve 7 and central tube 2, it is inside and outside there are pressure difference during due to pressure release, so compression pressure release piston 6 moves down；
The middle part of the pressure release piston 6 faces relief hole 5, and both sides are respectively equipped with metal seal and realize sealing with central tube, described to let out
The outside of pressure piston 6 is sealed by a metal seal with cylinder sleeve 7.
The inner side of connection bump 18 of the present invention is fixedly connected with 2 outer wall of central tube, and outside is equipped with screw thread, by screw thread and
Cylinder sleeve 7 is flexibly connected, and is easily installed and dismantles cylinder sleeve, is also allowed for making processing, is made it easier for promoting the use of.
Annular space between the outside of the steam injection hole 9 of the present invention and cylinder sleeve 7 installs steam injection piston 10, on the steam injection piston 10
Side outer wall is contacted by metal seal with cylinder sleeve 7, and the downside inner wall of steam injection piston 10 is connect by metal seal and central tube 2
Touch, be connected by steam injection spring 11 with spring block 12, steam injection piston 10 is moved down when realizing steam injection, open steam injection hole；Let out
During pressure, steam injection spring 11 drives steam injection piston 10 to move up, and realizes the closing of steam injection hole.
In addition, the upper surface of the retainer ring 14 of the center inside pipe wall of the present invention is inclined-plane, the upper and lower table of the loose collar 15
Face is inclined-plane, and the lower surface of loose collar 15 and the upper surface of retainer ring 14, the upper surface of the loose collar 15 and slip
Ring 16 coordinates；The upper and lower surface of above-mentioned slip ring 16 is ramp structure, and the lower surface of the slip ring 16 is upper with loose collar 15
Surface contacts, and the inner side of the slip ring 16 is connected by metal seal with rotor connecting rod 3；And above-mentioned inclined-plane is outer
Side is to be inclined upwardly, that is, outside diameter level height be higher than internal diameter level height.
The outside diameter of the loose collar 15 of the present invention is less than the internal diameter of central tube, more than the outside diameter of retainer ring 14；And slip ring
16 outside diameter is more than 15 internal diameter of loose collar, moreover, the contact surface of retainer ring 14, loose collar 15 and slip ring 16 is inclined-plane, phase
An one-way only operation valve mutually is cooperatively formed, is also had as Bernoulli Jacob's one-way only operation valve, in this way, when steam injection, the gas pressure of upside
When power is more than lower lateral pressure, one-way only operation valve is closed, and when recovering the oil, the fluid pressure of downside is more than the pressure of upside
When, one-way only operation valve is in the conduction state, that is, liquid also has activity along the gap between loose collar 15 and slip ring 16
Gap between ring 15 and retainer ring 14 flows outwardly, and realizes normal oil recovery process.
It should be noted that the present invention is suitable for the wellhead assembly of different model, wellhead assembly is existing conventional techniques, no
Describe again.
A kind of application method for all-metal screw pump Thickened oil injection-production integrated device that the present invention mentions, including procedure below：
A, with reference to Fig. 1, assembling device and G.I.H：First in 1 inner cavity tripping in fixing device d of casing, then tripping in pressure testing device c and
Positioner e, then tripping in all-metal screw pump b and note collection/control apparatus a, screw pump motor b1 is installed on wellhead assembly f tops,
And the steam (vapor) outlet of steam boiler is connected with wellhead assembly f；
B, referring to the drawings 3, high temperature and high pressure steam is injected to underground：Steam boiler is by wellhead assembly f to central tube 2 and rotor
Double wall chamber injection high temperature and high pressure steam between connecting rod 3, the top of the cavity between casing and central tube passes through wellhead assembly
Closing（Fig. 3 is not shown）, high temperature and high pressure steam is along double wall chamber downlink, by slip ring 16, loose collar 15 and retainer ring 14
After stop, enter the annular space between cylinder sleeve 7 and central tube 2 along steam injection hole 9, promote under steam injection piston 10 and steam injection spring 11
OK, at this time pressure release piston 6 close it is motionless, start to heavy oil tested layer inject high temperature and high pressure steam, steam injection a period of time after, steam
Boiler, which is stopped, carries out stewing well；
C, referring to the drawings 4, pressure release after well is boiled in a covered pot over a slow fire：After stewing well, due to the steam pressure of the heavy oil tested layer of underground be more than central tube 2 with
The pressure of double wall chamber between rotor connecting rod 3, steam injection spring 11 promote 10 uplink of steam injection piston to block cylinder sleeve 7 and central tube 2
Between annular space, steam injection hole 9 is closed；At this time, the pressure that the top of pressure release piston 6 is born is more than the pressure release spring 8 of lower part
Pressure, so promoting 6 downlink of pressure release piston, and then opens relief hole 5, until after pressure balance, 6 return of pressure release piston；
D, metal screw pump recovers the oil：After 6 return of pressure release piston, all-metal screw pump b is opened at this time, passes through matching somebody with somebody for rotor and stator
The viscous crude that crossed belt moves reduction viscosity is extracted, and realizes thickened oil recovery, until the viscosity of viscous crude is again increased to discontented pure gold
When belonging to the twitch of screw pump, step B and C are repeated, realizes that Thickened oil injection-production operates.
In addition, referring to the drawings 2, in step A, the assembling of all-metal screw pump b and note collection/control apparatus a and tripping in process bag
Include procedure below：Cylinder sleeve 7 is connected fixation with central tube 2, and pressure release spring 8 and pressure release piston 6 are installed, then steam injection piston is installed
10 and steam injection spring 11, after the lower end connection metal screw pump stator for the central tube 2 that component will be installed, 1 inner cavity of tripping in casing；Again
By 15 tripping in central tube of loose collar, 2 inner cavity, then the rotor connecting rod 3 in 2 inner cavity tripping in installation metal screw pump rotor of central tube,
The upper end connection wellhead assembly of central tube 2, the upper end of rotor connecting rod 3 is connected to screw pump motor b1；
Further detailed description cylinder sleeve and pressure release and the assembling process of each component of steam injection, by cylinder sleeve 7 by connection bump 18 with
The connection of central tube 2 is fixed, and pressure release spring 8 and pressure release piston 6 is sequentially loaded into the upside annular space of cylinder sleeve 7 and central tube 2, then will
Spacing ring 4 is threadedly secured to the top of cylinder sleeve 7；Installed in the downside annular space of cylinder sleeve 7 and central tube 2 steam injection piston 10 and
Steam injection spring 11, and the bottom of steam injection spring 11 is connected with spring block 12.
Embodiment 2, difference from Example 1 of the present invention are：The pressure release piston 6 that the present invention mentions is bow-shaped structural, is let out
The center face relief hole 5 of piston 6, and the equal length of both sides are pressed, when being so more advantageous to steam injection, relief hole keeps closing
Closed state.
Embodiment 3, difference from Example 1 of the present invention are：Shape between the outside of the steam injection hole 9 of the present invention and cylinder sleeve 7
It is steam injection piston 10 in the lower section of steam injection cushion chamber into steam injection cushion chamber, the steam injection piston 10 is upper narrow lower thick structure, and
Upside outer wall is contacted by metal seal with cylinder sleeve 7, and the downside inner wall of steam injection piston 10 passes through metal seal and central tube 2
Contact.In addition, the top of steam injection piston 10 is section be ladder structure of right angle, steam injection cushion chamber and steam injection piston 10 shape,
All being conducive to high temperature and high pressure steam smoothly promotes steam injection piston 10 to move down, and avoids steam injection piston 10 from the event pinned occur
Barrier.
The above, is only the part preferred embodiment of the present invention, and any those skilled in the art may profit
Equivalent technical solution is changed or is revised as with the technical solution of above-mentioned elaboration.Therefore, the technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (3)
- A kind of 1. application method of all-metal screw pump Thickened oil injection-production integrated device, it is characterized in that including procedure below：A, assembling device and G.I.H：First in casing（1）Inner cavity tripping in fixing device（d）, then tripping in pressure testing device（c）With it is fixed Position device（e）, then tripping in all-metal screw pump（b）With note collection/control apparatus（a）, in wellhead assembly（f）Top is installed by screw pump Motor（b1）, and by the steam (vapor) outlet and wellhead assembly of steam boiler（f）Connection；B, high temperature and high pressure steam is injected to underground：Steam boiler passes through wellhead assembly（f）To central tube（2）With rotor connecting rod （3）Between double wall chamber injection high temperature and high pressure steam, the top of the cavity between casing and central tube closed by wellhead assembly, High temperature and high pressure steam is along double wall chamber downlink, by slip ring（16）, loose collar（15）And retainer ring（14）Stop after, along Steam injection hole（9）Into cylinder sleeve（7）With central tube（2）Between annular space, promote steam injection piston（10）With steam injection spring（11）Downlink, Pressure release piston at this time（6）Close it is motionless, start to heavy oil tested layer inject high temperature and high pressure steam, steam injection a period of time after, steam Boiler, which is stopped, carries out stewing well；C, pressure release after stewing well：After stewing well, since the steam pressure of the heavy oil tested layer of underground is more than central tube（2）It is connected with rotor Bar（3）Between double wall chamber pressure, steam injection spring（11）Promote steam injection piston（10）Uplink blocks cylinder sleeve（7）With central tube （2）Between annular space, steam injection hole（9）It is closed；At this time, pressure release piston（6）The pressure born of top be more than the pressure release of lower part Spring（8）Pressure, so promote pressure release piston（6）Downlink, and then open relief hole（5）, until after pressure balance, pressure release is lived Plug（6）Return；D, metal screw pump recovers the oil：Pressure release piston（6）After return, all-metal screw pump is opened at this time（b）, pass through rotor and stator Cooperation drive reduce viscosity viscous crude be extracted, realize thickened oil recovery, until viscous crude viscosity be again increased to it is discontented During the twitch of sufficient metal screw pump, step B and C are repeated, realizes that Thickened oil injection-production operates.
- 2. the application method of all-metal screw pump Thickened oil injection-production integrated device according to claim 1, it is characterized in that：Step In A, all-metal screw pump（b）With note collection/control apparatus（a）Assembling and tripping in process include procedure below：By cylinder sleeve（7）With Central tube（2）Connection is fixed, and installs pressure release spring（8）With pressure release piston（6）, then steam injection piston is installed（10）With steam injection spring （11）, the central tube of component will be installed（2）Lower end connection metal screw pump stator after, tripping in casing（1）Inner cavity；Again by activity Ring（15）Tripping in central tube（2）Inner cavity, then in central tube（2）The rotor connecting rod of inner cavity tripping in installation metal screw pump rotor （3）, central tube（2）Upper end connection wellhead assembly, rotor connecting rod（3）Upper end be connected to screw pump motor（b1）.
- 3. the application method of all-metal screw pump Thickened oil injection-production integrated device according to claim 2, it is characterized in that：Assembling When, by cylinder sleeve（7）Pass through connection bump（18）With central tube（2）Connection is fixed, by pressure release spring（8）With pressure release piston（6）According to Secondary loading cylinder sleeve（7）With central tube（2）Upside annular space in, then by spacing ring（4）It is threadedly secured to cylinder sleeve（7）Top Portion；In cylinder sleeve（7）With central tube（2）Downside annular space in install steam injection piston（10）With steam injection spring（11）, and steam injection spring （11）Bottom and spring block（12）Connection.
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| CN201711131100.8A CN107905773B (en) | 2017-11-15 | 2017-11-15 | The application method of all-metal screw pump Thickened oil injection-production integrated device |
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| CN201711131100.8A CN107905773B (en) | 2017-11-15 | 2017-11-15 | The application method of all-metal screw pump Thickened oil injection-production integrated device |
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| CN107905773B CN107905773B (en) | 2019-10-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020177349A1 (en) * | 2019-03-06 | 2020-09-10 | 无锡恒信北石科技有限公司 | Intelligent oil extraction system using all-metal screw pump |
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