CN107905773B - 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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- CN107905773B CN107905773B CN201711131100.8A CN201711131100A CN107905773B CN 107905773 B CN107905773 B CN 107905773B CN 201711131100 A CN201711131100 A CN 201711131100A CN 107905773 B CN107905773 B CN 107905773B
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- 239000002184 metal Substances 0.000 title claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 91
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 6
- 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
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000036461 convulsion Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004888 barrier function 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
- 239000010779 crude oil Substances 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
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 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
- 238000003825 pressing Methods 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
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 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 methods of all-metal screw pump Thickened oil injection-production integrated device.Its technical solution is: including flow string, fixed device, wellhead assembly, wellhead assembly is installed at the top of casing, the fixing device for installing above plug face, pass through the fixed support flow string of fixed device, the flow string includes note collection/control apparatus, all-metal screw pump, pressure testing device and positioning device, the top installation note collection/control apparatus of all-metal screw pump, lower part is installed on the securing means by positioning device, and is installed on pressure testing device between fixed device and all-metal screw pump.Beneficial effect is: first is that do not need frequent job execution, when steam injection, does not need to raise and decentralize entire or part all-metal screw pump, reduces operating cost, decreases the probability of happening of safety accident caused by operation；Steam injection is flexible, does not need disposably to inject a large amount of high temperature and high pressure steam to stratum, reduce as the pressure for disposably injecting 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, in particular to a kind of all-metal screw pump Thickened oil injection-production integrally fills
The application method set.
Background technique
During oil exploitation, viscous crude has special high viscosity and high-solidification point characteristic, in each of development and application
A aspect all encounters some technical problems, 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 excessively high, paraffin content is big, so that oil pipe
Oil flow channel reduces, and the uplink and downlink resistance of rod string increases, and when down stroke horse head easily occurs and " fights " phenomenon, when upstroke
Beam rating increases, and can make sucker rod stuck in oil pipe when serious, or even cause the down-hole accident of rod broken.In addition,
Well lower for 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 lower
When, it is easy wax deposition herein and blade guiding wheel runner is caused to block, drilling fluid resistance increases, and makes the discharge capacity decline of pump, while can make electricity
Machine load increases, serious that motor is caused often to shut down, and prevents electric pump unit from running well.
Currently, generally using steam thermal recovery mode 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 carries out thickened oil recovery with the use of screw pump, when the advantage of the protrusion of screw pump is pumped (conveying) medium
Vortex is not formed, to the sticky insensitive of medium, can transport high viscosity 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 rubber material of use is usually fourth
Nitrile rubber (NBR).Under the rugged environment of oil field, screw pump stator rubber material by oil, wear away between rotor and fatigue etc. because
The influence of element is easy to make stator rubber that ageing failure occur, limits the use of screw pump.Especially because being 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, needing to construct by oil field operation proposes from the casing of oil well by screw pump is whole, then, to oil well inside inject high temperature
The steam of high pressure, and carry out stewing well for a period of time, third 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 more then several hundred rice even go up km,
This just consumes a large amount of activity duration and cost, therefore there is an urgent need to a kind of screw pumps of all-metal, can bear high temperature steaming
Vapour avoids screw pump from integrally proposing the high operating cost of bring.
Chinese patent literature Publication No. 104847323A, patent name are " all-metal screw pump Thickened oil injection-production integration
Complexes ", including polished rod assembly, magneto driving head protective device, directly drive three-phase permanent-magnetic synchronous motors, high temperature and pressure
Seal assembly, tubing head, casing head, surface pipe, oil pipe, torque tube, torque anchor, metal screw pump, is helped dedicated gas filling device
Positive device, tail pipe, screw pump ground control cabinet；It is followed successively by polished rod assembly, magneto driving head protective device, straight drive from top to bottom
Three-phase permanent-magnetic synchronous motors, dedicated gas filling device, tubing head, casing, torque tube, torque anchor, are helped high temperature and pressure seal assembly
Positive device, tail pipe, oil pipe cover in casing, and metal screw pump is in torque anchor；Screw pump ground control cabinet and straight drive three-phase are forever
The connection of magnetic-synchro motor.Metal stator is connect by above-mentioned patent with oil pipe, and metallic rotator is connect 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 channel is opened, then reinjects steam, 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 itself the problem is that: although not needing to propose screw pump into well head completely, only above mention one
Section distance, it is possible to reduce the activity duration, however, there remains the rotor portions for above mentioning screw pump, and metallic rotator above mentions every time
All metal stator may once be worn with decentralization, and its decentralization generally can all have error, 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 wearing or colliding, reduce spiral shell
The service life of bar pump；In addition, above mentioning for the rotor of screw pump needs large-scale hanging device to complete, which increases operation at
The risk of this and construction.
Chinese patent literature number is 102877821A, and patent name is " thickened oil steam-stimulated note adopts integrated apparatus ", packet
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
Oil well casing is arranged on steam injection oil recovery integral type well head in seat, cabinet, motor and motor cabinet, 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, is equipped with sucker rod, sucker rod lower end in 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 connect with motor drive, and sealing is provided in pedestal
Device, pedestal lower end are connected with steam injection oil recovery integral type well head, and between pedestal and steam injection oil recovery integral type well head be equipped with first every
Heat pad, pedestal upper end are connect with cabinet, and the second heat insulating mattress is equipped between pedestal and cabinet, and cabinet 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 mention or transfer by adding motor, does not need using Large-scale Hoisting equipment, however, there remains pass through light
It is mentioned on bar and rotor is moved up into a distance, steam injection channel is opened, then reinject steam, steam injection is after the completion again by polished rod assembly
Decentralization, rotor is put into stator, then is recovered the oil.The invention the problem is that: there is still a need for the rotors for above mentioning screw pump
Part, and every time raising and decentralizing for metallic rotator all metal stator may once be worn, although mention thereon and under
The process put is integrated well head completion of being recovered the oil using motor and steam injection, reduces error, reduces the collision of rotor and stator
Probability, but this is not avoided that the abrasion to stator is transferred each time and above proposed to the rotor of all-metal still, so, still can
Reduce the service life of screw pump.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of all-metal screw pump thick oil filling
The application method for adopting integrated device does not need to mention or transfer rotor, but in addition adds steam injection channel, by steam injection channel come
Complete the institutional operation of steam injection and oil recovery.
A kind of application method for all-metal screw pump Thickened oil injection-production integrated device that the present invention mentions, technical solution are packets
Include following procedure:
A, assembling device and G.I.H: it is first fixed device (d) in casing (1) inner cavity tripping in, then tripping in pressure testing device (c)
With positioning device (e), then tripping in all-metal screw pump (b) and note collection/control apparatus (a), spiral shell is installed on wellhead assembly (f) top
Bar pump motor (b1), and the steam (vapor) outlet of steam boiler is connect with wellhead assembly (f)；
B, inject high temperature and high pressure steam to underground: steam boiler is connected by wellhead assembly (f) to central tube (2) and rotor
Double wall chamber between extension bar (3) injects high temperature and high pressure steam, and the top of the cavity between casing and central tube passes through wellhead assembly
Closing, high temperature and high pressure steam is along double wall chamber downlink, by the blocking of slip ring (16), loose collar (15) and fixed ring (14)
Afterwards, enter the annular space between cylinder sleeve (7) and central tube (2) along steam injection hole (9), push steam injection piston (10) and steam injection spring
(11) downlink, pressure release piston (6) closes motionless at this time, starts to inject high temperature and high pressure steam to heavy oil tested layer, when steam injects one section
Between after, steam boiler, which stops working, 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 greater than central tube (2) and rotor
The pressure of double wall chamber between connecting rod (3), steam injection spring (11) push steam injection piston (10) uplink blocking cylinder sleeve (7) and center
The annular space between (2) is managed, steam injection hole (9) is closed；At this point, the pressure that the top of pressure release piston (6) is born is greater than letting out for lower part
The pressure of pressing spring (8) so pushing pressure release piston (6) downlink, and then opens relief hole (5), until after pressure balance, pressure release
Piston (6) return；
D, metal screw pump recover the oil: after pressure release piston (6) return, at this time open all-metal screw pump (b), by rotor with
The cooperation of stator drives the viscous crude for reducing viscosity to be extracted, and realizes thickened oil recovery, until the viscosity of viscous crude is again increased to
When being unsatisfactory for the twitch of metal screw pump, step B and C are repeated, realizes Thickened oil injection-production operation.
Preferably, in step A, all-metal screw pump (b) and infuse collection/control apparatus (a) assembling and tripping in process include with
Lower process: cylinder sleeve (7) and central tube (2) are connected and fixed, and install pressure release spring (8) and pressure release piston (6), then install steam injection
Piston (10) and steam injection spring (11), will install the central tube (2) of component lower end connection metal screw pump stator after, tripping in set
Manage (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 upper end of the rotor connecting rod (3) of rotor, central tube (2) connects wellhead assembly, and the upper end of rotor connecting rod (3) is connected to screw rod
Pump motor (b1)；
Preferably, when assembling, cylinder sleeve (7) are connected and fixed by connection bump (18) with central tube (2), by pressure release spring
(8) it is sequentially loaded into the upside annular space of cylinder sleeve (7) and central tube (2) with pressure release piston (6), then stop collar (4) is passed through into screw thread
It is fixed on the top of cylinder sleeve (7)；Steam injection piston (10) and steam injection bullet are installed in the downside annular space of cylinder sleeve (7) and central tube (2)
Spring (11), and the bottom of steam injection spring (11) is connect with spring block (12).
The beneficial effects of the present invention are: not needing to raise and decentralize entire all-metal first is that do not need frequent job execution
Screw pump, does not need the screw pump rotor for mentioning segment yet, when steam injection entire stator and rotor keep in situ motionless, reduce work
Industry cost decreases the probability of happening of safety accident caused by operation；Two are that of avoiding the rotor and stator of metal screw pump
The wear problem as caused by above mentioning or transfer 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 is that steam injection is flexible, do not need disposably to ground
Layer injects a large amount of high temperature and high pressure steam, reduce as the pressure for disposably injecting steam it is excessive caused by security risk, this
Invention can reduce the expense of construction and the time of operation, viscous crude is greatly improved according to the needs on stratum steam injection at any time
The efficiency of exploitation.
Detailed description of the invention
Structural schematic diagram when attached drawing 1 is underground installation of the invention
Attached drawing 2 is the structural schematic diagram for infusing collection/control apparatus；
Attached drawing 3 is structural schematic diagram when infusing collection/control apparatus steam injection；
Attached drawing 4 is structural schematic diagram when infusing collection/control apparatus pressure release；
In upper figure: note collection/control apparatus a, all-metal screw pump b, pressure testing device c, fixed device d, positioning device 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, stop collar 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, fixed ring 14, loose collar 15, sliding
Ring 16, metal seal 17, connection bump 18, pressure release seam 4.1.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1, referring to attached Fig. 1 and 2, a kind of all-metal screw pump Thickened oil injection-production integrated device that the present invention mentions,
Technical solution is: including flow string, fixed device d, wellhead assembly f, the top of casing 1 is equipped with wellhead assembly f, casing 1
Bottom be artificial bottom of a well g, the artificial bottom of a well top g is equipped with multiple plug face h, the fixing device for installing d above plug face h, by solid
Determine the fixed support flow string of device d, the flow string includes note collection/control apparatus a, all-metal screw pump b, pressure testing device c
With positioning device e, the top installation note collection/control apparatus a of all-metal screw pump b, lower part is mounted on fixation by positioning device e
On device d, and pressure testing device c is installed between fixed 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,
The middle part outside of steam injection spring 11, spring block 12, central tube 2 passes through 18 fix cylinder liner 7 of connection bump, and in central tube 2
Subordinate side is equipped with steam injection hole 9, and upside is equipped with relief hole 5, is matched by steam injection piston 10 with steam injection hole 9 in the lower part of the cylinder sleeve 7
It closes and realizes switch, the lower part of the steam injection piston 10 is connect by steam injection spring 11 with spring block 12；The top of the cylinder sleeve 7
The switch of relief hole is realized by pressure release piston 6 and the cooperation of relief hole 5, and the lower part of pressure release piston 6 is installed on pressure release spring 8.
Fixed 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 equipped with slip ring 16,
Loose collar 15 is installed between fixed ring 14 and slip ring 16.
Wherein, the top of pressure release piston 6 is equipped with stop collar 4, and the outer wall top of the stop collar 4 is equipped with lug boss, passes through
Lug boss and cylinder sleeve 7 cooperate, and the middle part of stop collar 4 is equipped with the pressure release seam 4.1 of circular ring shape, high pressure gas by pressure release stitch 4.1 into
Enter the annular space between cylinder sleeve 7 and central tube 2, when due to pressure release, inside and outside there are pressure differences, so compression pressure release piston 6 moves down；
The middle part of the pressure release piston 6 faces relief hole 5, and two sides are respectively equipped with metal seal and central tube is realized and sealed, described to let out
The outside of piston 6 is pressed to seal by a metal seal and cylinder sleeve 7.
The inside of connection bump 18 of the invention is fixedly connected with 2 outer wall of central tube, outside be equipped with screw thread, by screw thread with
Cylinder sleeve 7 is flexibly connected, and is easily installed and dismantles cylinder sleeve, is also convenient for production processing, is made it easier for promoting the use of.
Annular space between the outside and cylinder sleeve 7 of steam injection hole 9 of the invention 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 with central tube 2
Touching, is connect by steam injection spring 11 with spring block 12, and steam injection piston 10 is moved down when realizing steam injection, opens steam injection hole；It lets out
When 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 fixed ring 14 of center inside pipe wall of the 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 is contacted with the upper surface of fixed ring 14, the upper surface of the loose collar 15 and sliding
Ring 16 cooperates；The upper and lower surfaces of above-mentioned slip ring 16 are bevel structure, and the lower surface of the slip ring 16 is upper with loose collar 15
Surface contact, and the inside of the slip ring 16 is connect by metal seal with rotor connecting rod 3；And above-mentioned inclined-plane is outer
Side is upward inclination, that is, the level height of outer diameter is higher than the level height of internal diameter.
The outer diameter of loose collar 15 of the invention is less than the internal diameter of central tube, greater than the outer diameter of fixed ring 14；And slip ring
16 outer diameter is greater than 15 internal diameter of loose collar, moreover, the contact surface of fixed 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 greater than lower lateral pressure, one-way only operation valve is in close state, and when recovering the oil, the fluid pressure of downside is greater than the pressure of upside
When, one-way only operation valve is in the conductive state, that is, liquid, along the gap between loose collar 15 and slip ring 16, there are also activities
Gap between ring 15 and fixed 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
It describes again.
A kind of application method for all-metal screw pump Thickened oil injection-production integrated device that the present invention mentions, including following procedure:
A, referring to Fig.1, assembling device and G.I.H: first in the fixed device d of 1 inner cavity tripping in of casing, then tripping in pressure testing dress
C and positioning device e, then tripping in all-metal screw pump b and note collection/control apparatus a are set, in the top wellhead assembly f installation screw pump electricity
Machine b1, and the steam (vapor) outlet of steam boiler is connect with wellhead assembly f；
B, referring to attached drawing 3, inject high temperature and high pressure steam to underground: steam boiler by wellhead assembly f to central tube 2 with
Double wall chamber between rotor connecting rod 3 injects high temperature and high pressure steam, and the top of the cavity between casing and central tube passes through well head
Device closes (Fig. 3 is not shown), and high temperature and high pressure steam is along double wall chamber downlink, by slip ring 16, loose collar 15 and fixed ring
After 14 blocking, enters the annular space between cylinder sleeve 7 and central tube 2 along steam injection hole 9, push steam injection piston 10 and steam injection spring 11
Downlink, pressure release piston 6 closes motionless at this time, starts to inject high temperature and high pressure steam to heavy oil tested layer, after steam injects a period of time, steam
Boiler furnace, which stops working, carries out stewing well；
C, referring to attached drawing 4, pressure release after well is boiled in a covered pot over a slow fire: after stewing well, since the steam pressure of the heavy oil tested layer of underground is greater than center
The pressure of double wall chamber between pipe 2 and rotor connecting rod 3, steam injection spring 11 push 10 uplink of steam injection piston blocking cylinder sleeve 7 in
Annular space between heart pipe 2, steam injection hole 9 are closed；At this point, the pressure that the top of pressure release piston 6 is born is greater than the pressure release bullet of lower part
The pressure of spring 8 so pushing 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, opening all-metal screw pump b at this time, passes 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
When the twitch of sufficient all-metal screw pump, step B and C are repeated, realizes Thickened oil injection-production operation.
In addition, referring to attached drawing 2, in step A, all-metal screw pump b and assembling and the tripping in process packet for infusing collection/control apparatus a
It includes following procedure: cylinder sleeve 7 and central tube 2 is connected and fixed, 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 that the central tube 2 of component will be installed, 1 inner cavity of tripping in casing；Again
The rotor connecting rod 3 of metal screw pump rotor is installed by 15 tripping in central tube of loose collar, 2 inner cavity, then in 2 inner cavity tripping in of central tube,
The upper end of central tube 2 connects wellhead assembly, and the upper end of rotor connecting rod 3 is connected to screw pump motor b1；
Cylinder sleeve 7 is passed through connection bump by the assembling process of further detailed description cylinder sleeve and pressure release and each component of steam injection
18 are connected and fixed with central tube 2, 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,
Stop collar 4 is threadedly secured to the top of cylinder sleeve 7 again；Steam injection piston is installed in the downside annular space of cylinder sleeve 7 and central tube 2
10 and steam injection spring 11, and the bottom of steam injection spring 11 is connect with spring block 12.
Embodiment 2, difference from Example 1 of the present invention is: 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 two sides are pressed, when being more advantageous to steam injection in this way, relief hole keeps closing
Closed state.
Embodiment 3, difference from Example 1 of the present invention is: shape between the outside and cylinder sleeve 7 of steam injection hole 9 of the invention
It is steam injection piston 10 in the lower section of steam injection cushion chamber at 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, it is ladder structure of right angle that the top of steam injection piston 10, which is section, the shape of steam injection cushion chamber and steam injection piston 10,
All being conducive to high temperature and high pressure steam smoothly pushes steam injection piston 10 to move down, the event for avoiding steam injection piston 10 from occurring lockking
Barrier.
The above, is only part preferred embodiment of the invention, and anyone skilled in the art may benefit
Equivalent technical solution is modified or is revised as with the technical solution of above-mentioned elaboration.Therefore, 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)
1. a kind of application method of all-metal screw pump Thickened oil injection-production integrated device, it is characterized in that including following procedure:
A, assembling device and G.I.H: it is first fixed device (d) in casing (1) inner cavity tripping in, then tripping in pressure testing device (c) and fixed
Position device (e), then tripping in all-metal screw pump (b) and note collection/control apparatus (a) install screw pump on wellhead assembly (f) top
Motor (b1), and the steam (vapor) outlet of steam boiler is connect with wellhead assembly (f)；
B, inject high temperature and high pressure steam to underground: steam boiler passes through wellhead assembly (f) to central tube (2) and rotor connecting rod
(3) the double wall chamber between injects high temperature and high pressure steam, and the top of the cavity between casing and central tube is closed by wellhead assembly,
High temperature and high pressure steam is along double wall chamber downlink, after the blocking of slip ring (16), loose collar (15) and fixed ring (14), along
Steam injection hole (9) enters the annular space between cylinder sleeve (7) and central tube (2), pushes steam injection piston (10) and steam injection spring (11) downlink,
Pressure release piston (6) closes motionless at this time, starts to inject high temperature and high pressure steam, after steam injects a period of time, steam to heavy oil tested layer
Boiler, which stops working, carries out stewing well；
C, it pressure release after stewing well: after stewing well, is connect since the steam pressure of the heavy oil tested layer of underground is greater than central tube (2) with rotor
The pressure of double wall chamber between bar (3), steam injection spring (11) push steam injection piston (10) uplink blocking cylinder sleeve (7) and central tube
(2) annular space between, steam injection hole (9) are closed；At this point, the pressure that the top of pressure release piston (6) is born is greater than the pressure release of lower part
The pressure of spring (8) so pushing pressure release piston (6) downlink, and then opens relief hole (5), until pressure release is living after pressure balance
Fill in (6) return；
D, all-metal screw pump recovers the oil: after pressure release piston (6) return, opening all-metal screw pump (b) at this time, by rotor and determines
The cooperation of son drives the viscous crude for reducing viscosity to be extracted, and realizes thickened oil recovery, until the viscosity of viscous crude is again increased to not
When meeting the twitch of all-metal screw pump, step B and C are repeated, realizes Thickened oil injection-production operation；
Wherein, by connection bump (18) fix cylinder liner (7) on the outside of the middle part of central tube (2), and on the downside of the middle part of central tube (2)
Equipped with steam injection hole (9), upside is equipped with relief hole (5), passes through steam injection piston (10) and steam injection hole in the lower part of the cylinder sleeve (7)
(9) switch is realized in cooperation, and the lower part of the steam injection piston (10) is connect by steam injection spring (11) with spring block (12)；It is described
The switch of relief hole is realized on the top of cylinder sleeve (7) by pressure release piston (6) and relief hole (5) cooperation, and under pressure release piston (6)
Portion is installed on pressure release spring (8)；
Fixed ring (14) are installed in the middle and lower part inner cavity of central tube (2), the outer wall of rotor connecting rod (3) is equipped with slip ring
(16), loose collar (15) are installed between fixed ring (14) and slip ring (16).
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) and infuse collection/control apparatus (a) assembling and tripping in process include following procedure: by cylinder sleeve (7) with
Central tube (2) is connected and fixed, and installs pressure release spring (8) and pressure release piston (6), then installs steam injection piston (10) and steam injection spring
(11), after the lower end connection full metal screw pump stator that the central tube (2) of component will be installed, tripping in casing (1) inner cavity；It will live again
Rotating ring (15) tripping in central tube (2) inner cavity, then the rotor connection in central tube (2) inner cavity tripping in installation all-metal screw pump rotor
The upper end of bar (3), central tube (2) connects wellhead assembly, and the upper end of rotor connecting rod (3) is 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, cylinder sleeve (7) are connected and fixed by connection bump (18) with central tube (2), by pressure release spring (8) and pressure release piston (6) according to
It is secondary to be fitted into the upside annular space of cylinder sleeve (7) and central tube (2), then stop collar (4) is threadedly secured to the top of cylinder sleeve (7)
Portion；Steam injection piston (10) and steam injection spring (11), and steam injection spring are installed in the downside annular space of cylinder sleeve (7) and central tube (2)
(11) bottom is connect with spring block (12).
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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 true CN107905773B (en) | 2019-10-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2783156C1 (en) * | 2019-03-06 | 2022-11-09 | Уси Хэнсинь Бейши Текнолоджи Ко., Лтд | Smart petroleum production system with an all-metal screw pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736756B (en) * | 2019-03-06 | 2024-01-12 | 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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