CN107893646A - All-metal screw pump Thickened oil injection-production integrated control device and method - Google Patents
All-metal screw pump Thickened oil injection-production integrated control device and method Download PDFInfo
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- CN107893646A CN107893646A CN201711130296.9A CN201711130296A CN107893646A CN 107893646 A CN107893646 A CN 107893646A CN 201711130296 A CN201711130296 A CN 201711130296A CN 107893646 A CN107893646 A CN 107893646A
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- steam injection
- central tube
- pressure release
- screw pump
- piston
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- 239000002184 metal Substances 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 117
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 64
- 239000000295 fuel oil Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000036461 convulsion Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003129 oil well Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012546 transfer 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
- 239000010779 crude oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 230000009471 action Effects 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
- 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
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 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
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000007921 spray Substances 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
- E21B43/12—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
-
- 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
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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)
- Jet Pumps And Other Pumps (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to a kind of all-metal screw pump Thickened oil injection-production integrated control device and method.Its technical scheme is：Described central tube is arranged on cannula cavity, the inner chamber installation rotor connecting rod of central tube, rotor connecting rod is connected to the rotor of all-metal screw pump by screw rod pump joint, retainer ring is installed in the middle and lower part inner chamber of central tube, the outer wall of rotor connecting rod is provided with slip ring, and loose collar is provided between retainer ring and slip ring；Cylinder sleeve is fixed by connection bump on the outside of the middle part of the central tube, and steam injection hole is provided with the downside of the middle part of central tube, upside is provided with relief hole, is coordinated in the bottom of the cylinder sleeve by steam injection piston and steam injection hole and realizes switch.Beneficial effect is：Screw pump need not be raised and decentralized when steam injection and pressure release, reduces operating cost, the probability of happening of security incident caused by decreasing operation；It can reduce the expense of construction and the time of operation according to the needs on stratum steam injection at any time, the efficiency of thickened oil recovery be greatly improved.
Description
Technical field
The present invention relates to a kind of petroleum industry oil recovery servicing unit and method, more particularly to a kind of all-metal screw pump viscous crude
Note adopts integrated control device and method.
Background technology
During oil exploitation, viscous crude has special high viscosity and high-solidification point characteristic, in each of development and application
Individual 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, because viscosity is too high, paraffin content is big so that oil pipe
Oil flow channel reduces, the increase of the uplink and downlink resistance of rod string, easily occurs horse head during down stroke 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 because 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, because 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, serious causes motor often to shut down, and prevents 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 being pumped (conveying) medium the advantages of the protrusion of screw pump
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 make stator rubber that ageing failure occur, limit 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 sleeve pipe 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 by rubber screw rod pump again by oil field
Job execution is by the sleeve pipe of its tripping in oil well, and still, tens meters at least of the depth of oil well, 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, screw pump is avoided integrally to propose 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 protection device, drive three-phase permanent-magnetic synchronous motors, HTHP
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 protection device, straight drive are followed successively by from top to bottom
Three-phase permanent-magnetic synchronous motors, HTHP seal assembly, special gas filling device, tubing head, sleeve pipe, torque tube, torque anchor, help
Positive device, tail pipe, oil pipe are enclosed in sleeve pipe, 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 polished rod assembly above carries rotor driven and leaves screw pump
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 recovered the oil.But its problem of existing, is：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 typically 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
Drive device, steam injection oil recovery integral type well head, oil pipe, sucker rod, bimetal screw rod pump, cam anchor are included, drive device includes bottom
Seat, casing, motor and motor cabinet, oil well casing is set on steam injection oil recovery integral type well head, 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 provided with cam anchor, sucker rod, sucker rod lower end are provided with oil pipe
It is connected with the rotor of bimetal screw rod pump, its upper end is connected with polished rod, and polished rod is 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 provided with first every
Heat pad, base upper end are connected with casing, and the second heat insulating mattress is provided between base and casing, and casing 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 is above carried or transferred by setting up motor driven polished rod, it is not necessary to using Large-scale Hoisting equipment, but is still needed and is passed through light
Carried on bar and rotor is moved up into a segment 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 problem of invention is present 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 for prior art, there is provided a kind of all-metal screw pump thick oil filling
Integrated control device and method are adopted, in thickened oil recovery, it is not necessary to rotor is above carried or transferred, but sets up steam injection passage in addition,
Steam injection and the institutional operation of oil recovery are completed by steam injection passage.
A kind of all-metal screw pump Thickened oil injection-production integrated control device that the present invention mentions, its technical scheme are：Including in
Heart pipe（2）, rotor connecting rod（3）, pressure release piston（6）, cylinder sleeve（7）, pressure release spring（8）, 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）, connection bump
（18）, described central tube（2）Installed in sleeve pipe（1）Inner chamber, central tube（2）Inner chamber installation rotor connecting rod（3）, rotor company
Extension bar（3）Pass through screw rod pump joint（13）The rotor of all-metal screw pump is connected to, in central tube（2）Middle and lower part inner chamber installation
Retainer ring（14）, rotor connecting rod（3）Outer wall slip ring is installed（16）, in retainer ring（14）With slip ring（16）Between pacify
Equipped with loose collar（15）；The central tube（2）Middle part on the outside of pass through connection bump（18）Fixed cylinder sleeve（7）, and central tube（2）
Middle part on the downside of be provided with steam injection hole（9）, upside is provided with relief hole（5）, in the cylinder sleeve（7）Bottom pass through steam injection piston（10）
With steam injection hole（9）Coordinate and realize switch, the steam injection piston（10）Bottom pass through steam injection spring（11）With spring block（12）
Connection；The cylinder sleeve（7）Top pass through pressure release piston（6）With relief hole（5）Coordinate the switch for realizing relief hole, and pressure release is lived
Plug（6）Bottom be installed on pressure release spring（8）.
Preferably, above-mentioned pressure release piston（6）Top be provided with spacing ring（4）, the spacing ring（4）Outer wall top be provided with
Lug boss, pass through lug boss and cylinder sleeve（7）Coordinate, spacing ring（4）It is interior to be provided with pressure release seam（4.1）, pressure release seam（4.1）Top peace
If metal filter screen（4.2）, gases at high pressure pass through metal filter screen（4.2）Stitched with pressure release（4.1）Into cylinder sleeve（7）With central tube
（2）Between annular space, and then compress pressure release piston（6）Move down.
Preferably, above-mentioned pressure release piston（6）For bow-shaped structural, and pressure release piston（6）Middle part face relief hole（5）,
Both sides are respectively equipped with metal seal and realize sealing, the pressure release piston with central tube（6）Outside pass through a metal sealing
Part and cylinder sleeve（7）Sealing.
Preferably, above-mentioned connection bump（18）Inner side and central tube（2）Outer wall is fixedly connected, and outside is provided with screw thread, is led to
Cross screw thread and cylinder sleeve（7）It is flexibly connected.
Preferably, above-mentioned steam injection hole（9）Outside and cylinder sleeve（7）Between formed steam injection cushion chamber, in steam injection cushion chamber
Lower section is steam injection piston（10）, the steam injection piston（10）For upper narrow lower thick structure, and upside outer wall passes through metal seal
With cylinder sleeve（7）Contact, steam injection piston（10）Downside inwall pass through metal seal and central tube（2）Contact.
Preferably, above-mentioned steam injection piston（10）Top be that section is ladder structure of right angle.
Preferably, above-mentioned retainer ring（14）Upper surface be inclined-plane, the loose collar（15）Upper and lower surface be inclined-plane,
And loose collar（15）Lower surface and retainer ring（14）Upper surface, the loose collar（15）Upper surface and slip ring
（16）Coordinate.
Preferably, above-mentioned slip ring（16）Upper and lower surface be ramp structure, the slip ring（16）Lower surface and work
Rotating ring（15）Upper surface, and the slip ring（16）Inner side pass through metal seal and rotor connecting rod（3）Connection.
A kind of application method for all-metal screw pump Thickened oil injection-production integrated control device that the present invention mentions, its technical scheme
It is to include procedure below：
A, all-metal screw pump Thickened oil injection-production integrated control device is assembled：By cylinder sleeve（7）With central tube（2）It is connected, and pacifies
Fill pressure release spring（8）With pressure release piston（6）, then steam injection piston is installed（10）With steam injection spring（11）, the center of part will be installed
Pipe（2）Lower end connection metal screw pump stator after, tripping in sleeve pipe（1）Inner chamber；Again by loose collar（15）Tripping in central tube（2）It is interior
Chamber, then in central tube（2）The rotor connecting rod of inner chamber tripping in installation metal screw pump rotor（3）, central tube（2）Upper end connection
Wellhead assembly, rotor connecting rod（3）Top connecting screw pump motor；
B, high temperature and high pressure steam is injected to underground：Steam boiler is by wellhead assembly to central tube（2）With rotor connecting rod（3）
Between double wall chamber injection high temperature and high pressure steam, the top between sleeve pipe and central tube closed by wellhead assembly, HTHP
Steam is descending along double wall chamber, 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）It is descending, now let out
Press 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 stops
Only work and carry out stewing well；
C, pressure release after stewing well：After stewing well terminates, because 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）Up blocking cylinder sleeve（7）With central tube
（2）Between annular space, steam injection hole（9）It is closed；Now, pressure release piston（6）The pressure born of top be more than the pressure release of bottom
Spring（8）Pressure, so promote pressure release piston（6）It is descending, 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, screw pump can be now opened, passes through matching somebody with somebody for rotor and stator
The dynamic viscous crude for reducing viscosity of crossed belt 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 integrally operates.
Preferably, in above-mentioned steps A, by cylinder sleeve（7）Pass through connection bump（18）With central tube（2）It is connected, will lets out
Pressing 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 logical
Cross and be threadedly 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, control note to adopt using the control device of the present invention, when making thickened oil recovery not
Need that screw pump need not be raised and decentralized when frequent job execution, steam injection and pressure release, reduce operating cost, decrease work
The probability of happening of security incident caused by industry；Two rotors for being that of avoiding metal screw pump cause with stator due to above carrying or transferring
Wear problem, extend the service life of screw pump, thoroughly solve the problems, such as that maloperation occurs for the possibility in operation, will not go out
The collision problem of existing rotor and stator；Third, steam injection is flexible, it is not necessary to substantial amounts of high temperature and high pressure steam disposably is injected to stratum,
Potential safety hazard caused by reducing by reason of heavy pressure, the present invention can reduce construction according to the needs on stratum steam injection at any time
Expense and the time of operation, the efficiency of thickened oil recovery is greatly improved.
Brief description of the drawings
Structural representation when accompanying drawing 1 is under lower going-into-well of the present invention；
Structural representation when accompanying drawing 2 is steam injection of the present invention；
Structural representation when accompanying drawing 3 is pressure release of the present invention；
In upper figure：Sleeve pipe 1, central tube 2, rotor connecting rod 3, spacing ring 4, relief hole 5, pressure release piston 6, cylinder sleeve 7, pressure release spring
8th, 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, cunning
Rotating ring 16, metal seal 17, connection bump 18, pressure release seam 4.1, metal filter screen 4.2.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying 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, a kind of all-metal screw pump Thickened oil injection-production integrated control device for mentioning of the present invention, its
Technical scheme is：Including central tube 2, rotor connecting rod 3, pressure release piston 6, cylinder sleeve 7, pressure release spring 8, 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, connection bump 18, in described
Heart pipe 2 is arranged on the inner chamber of sleeve pipe 1, and the inner chamber installation rotor connecting rod 3 of central tube 2, rotor connecting rod 3 passes through screw rod pump joint 13
The rotor of all-metal screw pump is connected to, retainer ring 14, the outer wall of rotor connecting rod 3 are installed in the middle and lower part inner chamber of central tube 2
Slip ring 16 is installed, loose collar 15 is installed between retainer ring 14 and slip ring 16；It is logical on the outside of the middle part of the central tube 2
Cross connection bump 18 and fix cylinder sleeve 7, and steam injection hole 9 is provided with the downside of the middle part of central tube 2, upside is provided with relief hole 5, in the cylinder
The bottom of set 7 is coordinated by steam injection piston 10 and steam injection hole 9 realizes switch, and the bottom of the steam injection piston 10 passes through steam injection spring
11 are connected with spring block 12；The top of the cylinder sleeve 7 coordinates the switch for realizing relief hole by pressure release piston 6 and relief hole 5,
And the bottom of pressure release piston 6 is installed on pressure release spring 8.
Wherein, the top of pressure release piston 6 is provided with spacing ring 4, and the outer wall top of the spacing ring 4 is provided with lug boss, passed through
Lug boss coordinates with cylinder sleeve 7, and the pressure release seam 4.1 provided with annular, the top of pressure release seam 4.1 are provided with metal filtration in spacing ring 4
Net 4.2, the annular space that gases at high pressure are entered between cylinder sleeve 7 and central tube 2 by metal filter screen 4.2 and pressure release seam 4.1, avoids sand
Son, which sprays, to be caused to wear, inside and outside pressure difference to be present during due to pressure release, so compression pressure release piston 6 moves down；The pressure release piston 6
Middle part face relief hole 5, both sides, which are respectively equipped with metal seal, to be realized with central tube and seals, the pressure release piston 6 it is outer
Side 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 the outer wall of central tube 2, and outside is provided 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 inwall 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 is contacted, 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, external diameter level height be higher than internal diameter level height.
The external diameter of the loose collar 15 of the present invention is less than the internal diameter of central tube, more than the external diameter of retainer ring 14；And slip ring
16 external diameter is more than the internal diameter of loose collar 15, moreover, the contact surface of retainer ring 14, loose collar 15 and slip ring 16 is inclined-plane, phase
Mutually cooperatively form an one-way only operation valve, also referred to as Bernoulli Jacob's one-way only operation valve.Slip ring 16 passes through metal with rotor connecting rod 3
Seal connects, and so, when steam injection, the gas pressure of loose collar 15 and the upside of slip ring 16 is more than loose collar 15 and slip ring
During 16 times lateral pressures, loose collar 15 and slip ring 16, into squeezing action, have the function that mechanical seal, whole list to stationary annular
It is closed to operating valve；When screw rod pump work starts to recover the oil, the fluid pressure of downside is more than the pressure of upside, activity
Ring 15 and slip ring 16 have the motion of remote retainer ring, and so as to open mechanical seal, one-way only operation valve is in the conduction state,
The crude oil fluid exactly exploited is along the gap between loose collar 15 and slip ring 16, also between loose collar 15 and retainer ring 14
Gap flow upwards out, realize normal oil recovery process.
It should be noted that the present invention is applied to 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 control device that the present invention mentions, its technical scheme
It is to include procedure below：
A, all-metal screw pump Thickened oil injection-production integrated control device is assembled：Cylinder sleeve 7 and central tube 2 are connected, and installs and lets out
Pressing spring 8 and pressure release piston 6, then steam injection piston 10 and steam injection spring 11 are installed, the lower end connection of the central tube 2 of part will be installed
After metal screw pump stator, the inner chamber of tripping in sleeve pipe 1；Again by the inner chamber of 15 tripping in central tube of loose collar 2, then under the inner chamber of central tube 2
Enter to install the rotor connecting rod 3 of metal screw pump rotor, the upper end connection wellhead assembly of central tube 2, the top of rotor connecting rod 3
The screw pump motor installed on connection wellhead assembly；
B, high temperature and high pressure steam is injected to underground：Steam boiler is by wellhead assembly between central tube 2 and rotor connecting rod 3
Double wall chamber injection high temperature and high pressure steam, the top between sleeve pipe and central tube closed by wellhead assembly, high temperature and high pressure steam
It is descending along double wall chamber, after the stop of slip ring 16, loose collar 15 and retainer ring 14, along steam injection hole 9 enter cylinder sleeve 7 with
Annular space between central tube 2, promotion steam injection piston 10 and steam injection spring 11 are descending, and now pressure release piston 6 closes motionless, due to set
Top between pipe and central tube is closed by wellhead assembly, it is achieved that it is high to inject high temperature to the heavy oil tested layer on the outside of casing part
Steam is pressed, after steam injection a period of time, steam boiler, which is stopped, carries out stewing well；
C, pressure release after stewing well：After stewing well terminates, because the steam pressure of the heavy oil tested layer of underground is more than central tube 2 and rotor connecting rod
The pressure of double wall chamber between 3, steam injection spring 11 promote the up annular space blocked between cylinder sleeve 7 and central tube 2 of steam injection piston 10,
Steam injection hole 9 is closed；Now, the pressure that the top of pressure release piston 6 is born is more than the pressure of the pressure release spring 8 of bottom, so pushing away
Dynamic pressure release piston 6 is descending, and then opens relief hole 5, until after pressure balance, the return of pressure release piston 6；
D, metal screw pump recovers the oil：After the return of pressure release piston 6, screw pump can be now opened, passes through the cooperation of rotor and stator
The viscous crude that driving reduces viscosity is extracted, and realizes thickened oil recovery, until the viscosity of viscous crude is again increased to and is unsatisfactory for metal
During the twitch of screw pump, step B and C are repeated, realizes that Thickened oil injection-production integrally operates.
Need to be explained further is：In above-mentioned steps A, cylinder sleeve 7 is connected admittedly by connection bump 18 with central tube 2
It is fixed, pressure release spring 8 and pressure release piston 6 are sequentially loaded into the upside annular space of cylinder sleeve 7 and central tube 2, then spacing ring 4 is passed through into spiral shell
Line is fixed on the top of cylinder sleeve 7；Steam injection piston 10 and steam injection spring 11 are installed in the downside annular space of cylinder sleeve 7 and central tube 2, 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 beneficial for 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 inwall 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 advantageous 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.
It is described above, only it is the part preferred embodiment of the present invention, any those skilled in the art may profit
Equivalent technical scheme is changed or is revised as with the technical scheme 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 (10)
1. a kind of all-metal screw pump Thickened oil injection-production integrated control device, it is characterized in that：Including central tube（2）, rotor connecting rod
（3）, pressure release piston（6）, cylinder sleeve（7）, pressure release spring（8）, steam injection piston（10）, steam injection spring（11）, spring block（12）, spiral shell
Bar pump joint（13）, retainer ring（14）, loose collar（15）, slip ring（16）, connection bump（18）, described central tube（2）Peace
Mounted in sleeve pipe（1）Inner chamber, central tube（2）Inner chamber installation rotor connecting rod（3）, rotor connecting rod（3）Pass through screw rod pump joint
（13）The rotor of all-metal screw pump is connected to, in central tube（2）Middle and lower part inner chamber installation retainer ring（14）, rotor connecting rod
（3）Outer wall slip ring is installed（16）, in retainer ring（14）With slip ring（16）Between loose collar is installed（15）；In described
Heart pipe（2）Middle part on the outside of pass through connection bump（18）Fixed cylinder sleeve（7）, and central tube（2）Middle part on the downside of be provided with steam injection hole
（9）, upside is provided with relief hole（5）, in the cylinder sleeve（7）Bottom pass through steam injection piston（10）With steam injection hole（9）Coordinate and realize
Switch, the steam injection piston（10）Bottom pass through steam injection spring（11）With spring block（12）Connection；The cylinder sleeve（7）It is upper
Portion passes through pressure release piston（6）With relief hole（5）Coordinate the switch for realizing relief hole, and pressure release piston（6）Bottom be installed on and let out
Pressing spring（8）.
2. all-metal screw pump Thickened oil injection-production integrated control device according to claim 1, it is characterized in that：The pressure release is lived
Plug（6）Top be provided with spacing ring（4）, the spacing ring（4）Outer wall top be provided with lug boss, pass through lug boss and cylinder sleeve
（7）Coordinate, spacing ring（4）It is interior to be provided with pressure release seam（4.1）, pressure release seam（4.1）Top install metal filter screen（4.2）, high pressure
Gas passes through metal filter screen（4.2）Stitched with pressure release（4.1）Into cylinder sleeve（7）With central tube（2）Between annular space, and then compress
Pressure release piston（6）Move down.
3. all-metal screw pump Thickened oil injection-production integrated control device according to claim 1, it is characterized in that：The pressure release is lived
Plug（6）For bow-shaped structural, and pressure release piston（6）Middle part face relief hole（5）, both sides are respectively equipped with metal seal with
Heart pipe realizes sealing, the pressure release piston（6）Outside pass through a metal seal and cylinder sleeve（7）Sealing.
4. all-metal screw pump Thickened oil injection-production integrated control device according to claim 1, it is characterized in that：The connection is convex
Rise（18）Inner side and central tube（2）Outer wall is fixedly connected, and outside is provided with screw thread, passes through screw thread and cylinder sleeve（7）It is flexibly connected.
5. all-metal screw pump Thickened oil injection-production integrated control device according to claim 1, it is characterized in that：The steam injection hole
（9）Outside and cylinder sleeve（7）Between formed steam injection cushion chamber, be steam injection piston in the lower section of steam injection cushion chamber（10）, the note
Vapour piston（10）For upper narrow lower thick structure, and upside outer wall passes through metal seal and cylinder sleeve（7）Contact, steam injection piston（10）
Downside inwall pass through metal seal and central tube（2）Contact.
6. all-metal screw pump Thickened oil injection-production integrated control device according to claim 5, it is characterized in that：The steam injection is lived
Plug（10）Top be that section is ladder structure of right angle.
7. all-metal screw pump Thickened oil injection-production integrated control device according to claim 1, it is characterized in that：The retainer ring
（14）Upper surface be inclined-plane, the loose collar（15）Upper and lower surface be inclined-plane, and loose collar（15）Lower surface and fixation
Ring（14）Upper surface, the loose collar（15）Upper surface and slip ring（16）Coordinate.
8. all-metal screw pump Thickened oil injection-production integrated control device according to claim 7, it is characterized in that：The slip ring
（16）Upper and lower surface be ramp structure, the slip ring（16）Lower surface and loose collar（15）Upper surface, and institute
State slip ring（16）Inner side pass through metal seal and rotor connecting rod（3）Connection.
A kind of 9. user of all-metal screw pump Thickened oil injection-production integrated control device as any one of claim 1-8
Method, it is characterized in that including procedure below：
A, all-metal screw pump Thickened oil injection-production integrated control device is assembled：By cylinder sleeve（7）With central tube（2）It is connected, and pacifies
Fill pressure release spring（8）With pressure release piston（6）, then steam injection piston is installed（10）With steam injection spring（11）, the center of part will be installed
Pipe（2）Lower end connection metal screw pump stator after, tripping in sleeve pipe（1）Inner chamber；Again by loose collar（15）Tripping in central tube（2）It is interior
Chamber, then in central tube（2）The rotor connecting rod of inner chamber tripping in installation metal screw pump rotor（3）, central tube（2）Upper end connection
Wellhead assembly, rotor connecting rod（3）Top connecting screw pump motor；
B, high temperature and high pressure steam is injected to underground：Steam boiler is by wellhead assembly to central tube（2）With rotor connecting rod（3）
Between double wall chamber injection high temperature and high pressure steam, the top between sleeve pipe and central tube closed by wellhead assembly, HTHP
Steam is descending along double wall chamber, 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）It is descending, now let out
Press 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 stops
Only work and carry out stewing well；
C, pressure release after stewing well：After stewing well terminates, because 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）Up blocking cylinder sleeve（7）With central tube
（2）Between annular space, steam injection hole（9）It is closed；Now, pressure release piston（6）The pressure born of top be more than the pressure release of bottom
Spring（8）Pressure, so promote pressure release piston（6）It is descending, 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, screw pump can be now opened, passes through matching somebody with somebody for rotor and stator
The dynamic viscous crude for reducing viscosity of crossed belt 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 integrally operates.
10. the application method of all-metal screw pump Thickened oil injection-production integrated control device according to claim 9, its feature
It is：In step A, by cylinder sleeve（7）Pass through connection bump（18）With central tube（2）It is connected, by pressure release spring（8）Lived with pressure release
Plug（6）It is sequentially loaded into 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；In cylinder sleeve（7）With central tube（2）Downside annular space in install steam injection piston（10）With steam injection spring（11）, and note
Vapour spring（11）Bottom and spring block（12）Connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933358.2A CN110952956A (en) | 2017-11-15 | 2017-11-15 | Oil extraction auxiliary device and method for petroleum industry |
| CN201711130296.9A CN107893646B (en) | 2017-11-15 | 2017-11-15 | All-metal screw pump Thickened oil injection-production integrated control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130296.9A CN107893646B (en) | 2017-11-15 | 2017-11-15 | All-metal screw pump Thickened oil injection-production integrated control device and method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910933358.2A Division CN110952956A (en) | 2017-11-15 | 2017-11-15 | Oil extraction auxiliary device and method for petroleum industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107893646A true CN107893646A (en) | 2018-04-10 |
| CN107893646B CN107893646B (en) | 2019-10-22 |
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| CN201711130296.9A Active CN107893646B (en) | 2017-11-15 | 2017-11-15 | All-metal screw pump Thickened oil injection-production integrated control device and method |
| CN201910933358.2A Pending CN110952956A (en) | 2017-11-15 | 2017-11-15 | Oil extraction auxiliary device and method for petroleum industry |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910933358.2A Pending CN110952956A (en) | 2017-11-15 | 2017-11-15 | Oil extraction auxiliary device and method for petroleum industry |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060120909A1 (en) * | 2002-10-14 | 2006-06-08 | Hope Mark C | Rotary piston vacuum pump with washing installation |
| CN104100228A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Synchronous separate extraction reversing valve |
| CN104847323A (en) * | 2015-04-10 | 2015-08-19 | 山东祺龙海洋石油钢管股份有限公司 | Thickened oil injection and recovery integrated complete device comprising all metal screw pump |
| CN206158714U (en) * | 2016-10-19 | 2017-05-10 | 中国石油化工股份有限公司 | Annotate vapour flow control device |
| CN206608311U (en) * | 2017-03-29 | 2017-11-03 | 克拉玛依市熙海石油科技有限公司 | A kind of spacing controllable screen casing and all-metal screw pump |
-
2017
- 2017-11-15 CN CN201711130296.9A patent/CN107893646B/en active Active
- 2017-11-15 CN CN201910933358.2A patent/CN110952956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060120909A1 (en) * | 2002-10-14 | 2006-06-08 | Hope Mark C | Rotary piston vacuum pump with washing installation |
| CN104100228A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Synchronous separate extraction reversing valve |
| CN104847323A (en) * | 2015-04-10 | 2015-08-19 | 山东祺龙海洋石油钢管股份有限公司 | Thickened oil injection and recovery integrated complete device comprising all metal screw pump |
| CN206158714U (en) * | 2016-10-19 | 2017-05-10 | 中国石油化工股份有限公司 | Annotate vapour flow control device |
| CN206608311U (en) * | 2017-03-29 | 2017-11-03 | 克拉玛依市熙海石油科技有限公司 | A kind of spacing controllable screen casing and all-metal screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110952956A (en) | 2020-04-03 |
| CN107893646B (en) | 2019-10-22 |
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Effective date of registration: 20190923 Address after: 224700 No. 98 Xingda Road, Jianhu County Economic Development Zone, Yancheng City, Jiangsu Province Applicant after: Jiangsu Allen Frow Machinery Manufacturing Co., Ltd. Address before: 257200 Shandong province Dongying estuary area Sinopec Shengli Oilfield Branch marine oil production plant Applicant before: Li Wan Peng |
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