CN114370262B - Oil-bearing bubble shearing and oil-filtering control device for casing gas of fireflood affected oil well - Google Patents
Oil-bearing bubble shearing and oil-filtering control device for casing gas of fireflood affected oil well Download PDFInfo
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- CN114370262B CN114370262B CN202011095140.3A CN202011095140A CN114370262B CN 114370262 B CN114370262 B CN 114370262B CN 202011095140 A CN202011095140 A CN 202011095140A CN 114370262 B CN114370262 B CN 114370262B
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- 238000010008 shearing Methods 0.000 title claims abstract description 44
- 239000003129 oil well Substances 0.000 title claims abstract description 35
- 238000001914 filtration Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims description 41
- 230000006837 decompression Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005336 cracking Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 55
- 230000009471 action Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/243—Combustion in situ
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Abstract
The invention discloses a fire drive affected oil well casing gas oil-containing bubble shearing and oil-filtering control device which comprises an inner central tube, wherein a shunt tube (4), a setting deblocking mechanism and a bubble shearing and oil-filtering mechanism are sequentially sleeved outside the inner central tube from top to bottom, oil-containing bubbles can be broken after entering a slotted screen pipe (19), and gas in the oil-containing bubbles can pass through a filter layer (18), an exhaust channel (22) and an exhaust duct (402) in sequence and then be discharged out of the fire drive affected oil well casing gas oil-containing bubble shearing and oil-filtering control device. For a fire drive affected oil well, during oil extraction, the pressure in the sleeve is reduced by releasing the sleeve gas, the sleeve gas is prevented from entering the oil extraction pump, the pump efficiency is reduced, and the tail gas is clean and free of oil after passing through the sleeve gas oil-containing bubble shearing oil filtering control device. So that the tail gas can be recovered and treated normally. The control sleeve is normal, and the production efficiency of the fire drive affected oil well is improved.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation equipment, in particular to a device for controlling the shearing and oil filtering of oil bubbles in casing gas of a fire flooding effect-bearing oil well.
Background
Fireflood is an important thickened oil thermal recovery method, which continuously injects air into a stratum through a gas injection well and ignites an oil layer to realize in-situ combustion, thereby pushing stratum crude oil from the gas injection well to a production well. At present, 91 flame flooding blocks share gas injection well 9 ports, and daily injection of air is 13.87 multiplied by 104Nm 3 First line production well 22, open well 16, daily produced liquid 391t, daily produced oil 22t, daily produced tail gas 10.1×104Nm 3 Since 91 fire drives are put into development and production, the production efficiency of the production well is gradually increased, and the single well yield is obviously increased. However, the problem that the casing pressure is obviously increased in the production of part of the affected wells is solved, the phenomenon that 8 wells are subjected to tail gas oil carrying in the current test area is accumulated, and great difficulty is brought to the production of a tail gas recovery and treatment system. Through analysis, crude oil in the tail gas is attached to the surface of the bubble and is wrapped in the bubble, so that the casing gas cannot be controlled.
The solution adopted at present is as follows: oil well casing gas with large gas quantity in winter does not enter the gas collecting system, gas production is controlled, and 238 process gas-liquid mixing enters the station. And normally enters a recovery and treatment system in summer.
There are problems:
1. the gas production of a single well cannot be measured.
2. The jacket pressure causes the casing gas CO 2 The partial pressure is high, and the corrosion probability of the underground oil casing is increased.
Disclosure of Invention
In order to separate oil-containing bubbles from oil, the invention provides the oil-containing bubble shearing and oil filtering control device for the casing gas of the fire driven effective oil well.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a fire drives oily bubble of receiving effect oil well casing gas and cuts oil strain controlling means, includes the inner center tube, the inner center tube contains shunt tubes, setting deblocking mechanism and bubble shear rupture mechanism that from the top down overlaps in proper order outward, the inner center tube with be equipped with the exhaust passage between the setting deblocking mechanism, bubble shear rupture mechanism contains filter layer and the slotted screen pipe that the inner cover was established, contains inlet channel and exhaust channel in the pipe wall of shunt tubes, liquid in the inner center tube can get into this setting deblocking mechanism through the inlet channel and make this setting deblocking mechanism set, can break after the oily bubble gets into slotted screen pipe, the gas in the oily bubble can pass through in proper order behind filter layer, exhaust passage and the exhaust channel and discharge this fire drives oily bubble of receiving effect oil well casing gas and cuts oil strain controlling means.
The inner central tube comprises an upper tube, a central tube and a lower tube which are sequentially arranged from top to bottom, the bubble shearing and cracking mechanism is sleeved outside the lower tube, the tube wall of the slotted screen tube comprises long strip-shaped slots, and the filter layer comprises ceramic sand.
The top of bubble shearing and cracking mechanism contains the overair baffle and the filter screen of range upon range of setting from top to bottom, overair baffle and filter screen can block the filter layer and upwards remove, the gas in the oiliness bubble can get into the exhaust passage after filter layer, overair baffle and filter screen in proper order.
A liner tube is sleeved between the central tube and the setting and deblocking mechanism, an annular exhaust channel is formed between the central tube and the liner tube, a connecting through hole is formed in the lower portion of the liner tube, the lower end of the liner tube is abutted to the air passing baffle, an axial through hole is formed in the air passing baffle, and the connecting through hole is communicated with the axial through hole.
And an air collecting cylinder is arranged between the setting deblocking mechanism and the bubble shearing cracking mechanism, the air collecting cylinder sleeve is arranged outside the liner tube, an annular cavity is formed between the air collecting cylinder and the liner tube, and the axial through hole is communicated with the connecting through hole through the annular cavity.
The setting and deblocking mechanism comprises a deblocking cylinder, an upper jacket, a rubber cylinder and a lower jacket which are sequentially connected from top to bottom, an annular inner cavity is formed between the deblocking cylinder and the liner tube, a valve core and a spring are arranged in the annular inner cavity, the valve core is in sealing connection with the liner tube, a liquid inlet is formed between the deblocking cylinder and the liner tube, the valve core is in butt joint with the deblocking cylinder, and the valve core can open or close the liquid inlet.
The upper end of the upper sheath is sleeved in the lower end of the deblocking cylinder, a shearing pin is connected between the upper sheath and the deblocking cylinder, the upper end of the spring is in butt joint with the valve core, the lower end of the spring is in butt joint with the upper sheath, an annular gap exists between the upper sheath and the liner tube, the upper sheath is in sealing connection with the deblocking cylinder, and liquid can sequentially enter the space between the rubber cylinder and the liner tube through the liquid inlet and the annular gap.
The side wall of the deblocking cylinder is provided with a decompression through hole, the decompression through hole is positioned above the shearing pin, and when the shearing pin is sheared, the decompression through hole can be communicated with the annular inner cavity in the process that the deblocking cylinder moves upwards relative to the upper sheath.
The lower part and the deblocking jar and the center tube connection of shunt tubes are fixed, and the feed liquor pore contains horizontal segment and the vertical section that connects gradually from top to bottom, and the inner of horizontal segment communicates with the interior runner of shunt tubes, and the outer end of horizontal segment communicates with the upper end of vertical segment, and the lower extreme and the feed liquor mouth intercommunication of vertical segment, exhaust duct link up the shunt tubes along the axial, and the lower extreme and the exhaust passage intercommunication of exhaust duct (are passed through to the exhaust duct).
The upper end external connection of upper tube has the top connection, and the upper portion of shunt tubes is connected with the lower part of upper tube, forms annular space between top connection and the shunt tubes, and the annular space overcoat is equipped with the exit ring, is equipped with the exhaust through-hole on the lateral wall of exit ring, exhaust through-hole and annular space intercommunication.
The beneficial effects of the invention are as follows: for a fire drive affected oil well, during oil extraction, the pressure in the sleeve is reduced by releasing the sleeve gas, the sleeve gas is prevented from entering the oil extraction pump, the pump efficiency is reduced, and the tail gas is clean and free of oil after passing through the sleeve gas oil-containing bubble shearing oil filtering control device. So that the tail gas can be recovered and treated normally. The control sleeve is normal, and the production efficiency of the fire drive affected oil well is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a device for controlling the shearing and oil filtering of bubbles in oil-bearing gas in a casing of a fireflood effect oil well.
Fig. 2 is an enlarged schematic view of the first segment of fig. 1.
Fig. 3 is an enlarged schematic view of the second segment of fig. 1.
Fig. 4 is an enlarged schematic view of the third segment from the top in fig. 1.
Fig. 5 is an enlarged schematic view of the fourth segment from the top in fig. 1.
Fig. 6 is an enlarged schematic view of the fifth segment from fig. 1.
Fig. 7 is an enlarged schematic view of the sixth segment from fig. 1.
Fig. 8 is an enlarged schematic view of the seventh segment from the top in fig. 1.
Fig. 9 is a schematic view of a shunt.
Fig. 10 is a cross-sectional view taken along A-A in fig. 9.
1. An upper joint; 2. an upper tube; 3. an outlet ring; 4. a shunt; 5. deblocking the cylinder; 6. a liner tube; 7. a central tube; 8. a valve core; 9. a spring; 10. a jacket is arranged; 11. shearing pins; 12. a rubber cylinder; 13. a lower sheath; 14. a cylinder; 15. a gas passing baffle; 16. a filter screen; 17. a lower tube; 18. a filter layer; 19. cutting a slit sieve tube; 20. a lower joint; 21. a seal ring; 22. an exhaust passage;
301. an exhaust through hole;
401. a liquid inlet duct; 402. an exhaust duct; 403. an annular space;
501. a liquid inlet; 502. decompressing the through hole; 503. an annular inner cavity;
601. a connecting through hole;
1201. a vulcanized cylinder sleeve is arranged on the cylinder sleeve; 1202. a lower vulcanized cylinder sleeve;
1401. an annular cavity;
1501. an axial through hole;
1901. a strip-shaped slit;
4011. a horizontal section; 4012. a vertical section.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a fire drive is received oily bubble of effect oil well casing gas and is sheared oil controlling means, includes the inner center tube, the inner center tube contains shunt tubes 4, setting and is solved sealing mechanism and bubble shearing and rupture mechanism that cover in proper order from the top down outward, the inner center tube with be equipped with exhaust passage 22 between the setting and is solved sealing mechanism, bubble shearing and rupture mechanism contains filter layer 18 and slotted screen 19 that the cover was established in the interior, contains inlet channel 401 and exhaust channel 402 in the pipe wall of shunt tubes 4, liquid in the inner center tube can get into this setting and is solved sealing mechanism through inlet channel 401 and make this setting and seal the sealing mechanism seat seal, can break after the oil-containing bubble gets into slotted screen 19, the gas in the oil-containing bubble can pass through and pass through filter layer 18, exhaust passage 22 and exhaust channel 402 in proper order after discharging this fire drive is received oily bubble of effect oil well casing gas and is sheared oil controlling means, as shown in fig. 1 to 10.
In this embodiment, the inner central tube comprises an upper tube 2, a central tube 7 and a lower tube 17 which are sequentially arranged from top to bottom, and the axis of the upper tube 2, the axis of the central tube 7 and the axis of the lower tube 17 are coincident. The bubble shearing and cracking mechanism is sleeved outside the lower pipe 17, the pipe wall of the slotted screen pipe 19 is internally provided with a strip-shaped slot 1901, the width of the strip-shaped slot 1901 is 0.5mm-1mm, a filter layer 18 is filled between the slotted screen pipe 19 and the lower pipe 17, and the filter layer 18 contains ceramic sand (ceramsite).
In this embodiment, the upper part of the bubble shearing and cracking mechanism includes the air passing baffle 15 and the filter screen 16 which are stacked up and down, the air passing baffle 15 and the filter screen 16 can block the filter layer 18 from moving upwards, the oil-containing bubbles can crack after entering the slotted screen 19, the gas in the oil-containing bubbles can enter the exhaust channel 22 after passing through the filter layer 18, the air passing baffle 15 and the filter screen 16 in sequence, the filter layer 18 can crack the residual oil-containing bubbles, and both the filter layer 18 and the slotted screen 19 can play a role in oil-gas separation.
In this embodiment, a liner tube 6 is sleeved between the central tube 7 and the setting and unsetting mechanism, an annular exhaust channel 22 is formed between the central tube 7 and the liner tube 6, a connecting through hole 601 is formed in the lower portion of the liner tube 6, the lower end of the liner tube 6 is abutted to the gas passing baffle 15, an axial through hole 1501 is formed in the gas passing baffle 15, and the connecting through hole 601 is communicated with the axial through hole 1501.
In this embodiment, a cylinder 14 is disposed between the setting and unsetting mechanism and the bubble shearing and breaking mechanism, the cylinder 14 is in a cylindrical structure, the cylinder 14 is sleeved outside the liner tube 6, an annular cavity 1401 is formed between the cylinder 14 and the liner tube 6, the air passing baffle 15 and the filter screen 16 are both disposed between the cylinder 14 and the liner tube 6, and the axial through hole 1501 is communicated with the connecting through hole 601 through the annular cavity 1401.
In this embodiment, the setting and deblocking mechanism includes a deblocking cylinder 5, an upper jacket 10, a rubber cylinder 12 and a lower jacket 13, which are sequentially connected from top to bottom, an annular inner cavity 503 is formed between the deblocking cylinder 5 and the liner tube 6, a valve core 8 and a spring 9 are arranged in the annular inner cavity 503, the valve core 8 can move up and down, the valve core 8 is in sealing connection with the liner tube 6, a liquid inlet 501 is formed between the deblocking cylinder 5 and the liner tube 6, the valve core 8 is abutted with the deblocking cylinder 5, an annular sealing ring is arranged between the valve core 8 and the deblocking cylinder 5, and the valve core 8 can open or close the liquid inlet 501. An upper vulcanized cylinder sleeve 1201 is fixed in the upper end of the rubber cylinder 12, a lower vulcanized cylinder sleeve 1202 is fixed in the lower end of the rubber cylinder 12, and gaps exist among the rubber cylinder 12, the upper vulcanized cylinder sleeve 1201, the lower vulcanized cylinder sleeve 1202 and the liner tube 6.
In this embodiment, the upper end of the upper sheath 10 is sleeved in the lower end of the deblocking cylinder 5, a shear pin 11 is connected between the upper sheath 10 and the deblocking cylinder 5, the upper end of the spring 9 is abutted against the valve core 8, the lower end of the spring 9 is abutted against the upper sheath 10, an annular gap exists between the upper sheath 10 and the liner tube 6, the upper sheath 10 is in sealing connection with the deblocking cylinder 5, and liquid can sequentially enter between the rubber cylinder 12 and the liner tube 6 through the liquid inlet 501 and the annular gap, so that the rubber cylinder 12 is radially expanded and sealed.
In this embodiment, a decompression through hole 502 is provided on the side wall of the deblocking cylinder 5, the decompression through hole 502 is located above the shear pin 11, and when the shear pin 11 is not sheared (in an initial state), the decompression through hole 502 is in a closed state, and the decompression through hole 502 cannot be communicated with the annular inner cavity 503; when the shear pin 11 is sheared, the decompression through-hole 502 can be communicated with the annular inner cavity 503 in the process that the deblocking cylinder 5 moves upwards relative to the upper sheath 10, and the liquid in the annular inner cavity 503 can be discharged through the decompression through-hole 502.
In this embodiment, the lower part of the shunt tube 4 is fixedly connected with the deblocking cylinder 5 and the central tube 7, the liquid inlet duct 401 comprises a horizontal section 4011 and a vertical section 4012 which are sequentially connected up and down, the inner end of the horizontal section 4011 is communicated with the inner flow path of the shunt tube 4, the inner end of the horizontal section 4011 is connected with the middle inner surface of the shunt tube 4, the outer end of the horizontal section 4011 is communicated with the upper end of the vertical section 4012, the lower end of the vertical section 4012 is communicated with the liquid inlet 501, the air outlet duct 402 axially penetrates through the shunt tube 4, and the lower end of the air outlet duct 402 is communicated with the air outlet channel 22, as shown in fig. 3, 9 and 10.
In this embodiment, the upper end of the upper tube 2 is externally connected with an upper joint 1, the upper part of the shunt tube 4 is connected with the lower part of the upper tube 2, an annular space 403 is formed between the upper joint 1 and the shunt tube 4, an outlet ring 3 is sleeved outside the annular space 403, an exhaust through hole 301 is arranged on the side wall of the outlet ring 3, and the exhaust through hole 301 is communicated with the annular space 403. The lower end of the slotted screen 19 and the lower end of the lower base pipe 17 are fixedly connected by a lower joint 20.
The connection relation among the components in the oil-containing bubble shearing and oil filtering control device for the casing gas of the fire driven effective oil well is described below, the upper joint 1, the upper pipe 2, the shunt pipe 4, the central pipe 7, the lower pipe 17 and the lower joint 20 are sequentially connected in a threaded mode, the upper joint 1 and the shunt pipe 4 are clamped with the outlet ring 3, the shunt pipe 4 is connected with the deblocking cylinder 5 in a threaded mode, the upper jacket 10 is connected with the upper vulcanization cylinder 1201 in a threaded mode, the lower jacket 13 is connected with the lower vulcanization cylinder 1202 in a threaded mode, the air passing baffle 15 is connected with the air collecting cylinder 14 and the liner tube 6 in a threaded mode, the liner tube 6 is connected with the lower pipe 17 in a threaded mode, and the slotted screen 19 is connected with the lower joint 20 in a threaded mode.
The functions of the components in the oil-containing bubble shearing and oil-filtering control device of the casing gas of the fire driven and affected oil well are described as follows:
the upper joint 1 is used for connecting oil pipes. The upper tube 2 is used for connecting the upper joint 1 and the shunt tube 4. The outlet ring 3 is used to stabilize the upper fitting 1 and the shunt 4, creating a bleed air channel. The shunt tube 4 is internally provided with a deflation channel and a packer setting channel. The shear pin 11 may be sheared after the deblocking cylinder 5 is moved up. The liner 6 is used to establish a bleed passage. The central tube 7 is used for connecting the upper and lower parts, stressing and establishing an oil flow channel. The valve core 8 is used for opening liquid inlet and outlet and for setting and unsetting. The spring 9 is used for sealing against the valve core 8 to prevent liquid leakage.
The upper sheath 10 is used for connecting an upper vulcanized cylinder sleeve 1201 of the rubber cylinder 12 to press the vulcanized part of the rubber cylinder. The packer is unset after the shear pin 11 shears. The packing element 12 seals the tubing and casing annulus after expansion. The lower sheath 13 is used for connecting with the lower vulcanization cylinder sleeve 1202 of the rubber cylinder 12 to press the vulcanization part of the rubber cylinder. The gas collection cylinder 14 establishes a gas release passage and a storage space. The gas passing baffle 15 is used for limiting the movement of the ceramsite and establishing a gas passing channel. The filter screen 16 is used for filtering gas and stabilizing ceramsite. The lower tube 17 connects the lower joint 20 and the central tube 7. The filter layer 18 is used for filtering the oil-containing gas. The slotted screen 19 is used to shear oil-bearing bubbles and release gas. The lower sub 20 is used to connect tubing.
The working process of the oil-containing bubble shearing and oil filtering control device for the casing gas of the fire driven oil well is described below, and is shown in fig. 1 to 10.
1. And processing and assembling the oil-containing bubble shearing and oil filtering control device for the casing gas of the fire driven oil well for later use.
2. And (5) cutting and filtering the oil according to the oil-containing bubbles of the casing gas of the fireflood affected oil well to a designed position.
Setting:
1. and pressing the oil pipe of the pump truck by above 15MPa, namely filling the inner central pipe with pressure liquid.
2. The pressure liquid enters from the liquid inlet channel 401 of the shunt tube 4, the valve core 8 is pushed by the pressure liquid to move downwards, the liquid inlet 501 is in an open state, so that liquid (the pressure liquid) enters into the annular inner cavity 503, enters between the rubber cylinder 12 and the liner tube 6 through the upper sheath 10, and expands after the rubber cylinder 12 is pressed, and the annular space of the oil jacket is sealed.
3. The pump truck stops pressing, the valve core 8 moves upwards to reset under the action of the spring 9, the valve core 8 is in resealing connection with the unsealing cylinder 5, the liquid inlet 501 is in a closed state, and liquid in the rubber cylinder 12 locks the rubber cylinder 12 in an expanded state without pressure relief and unsealing.
Normal production:
1. the casing releases the casing pressure, the liquid produced in the oil layer enters the shaft, and the gas in the liquid floats upwards to enter the oil casing annulus.
2. When oil-containing bubbles are sheared and filtered by the oil-containing bubble shearing and oil-filtering control device for the casing gas of the fire driven effective oil well, the oil-containing bubbles enter the slit sieve tube 19 through the long-strip slits 1901, the oil-containing bubbles are sheared and broken, gas in the oil-containing bubbles is released, the gas passes through the filter layer 18, the gas continues to pass through the filter screen 16, the air passing baffle 15, the exhaust channel 22 and the exhaust duct 402 in sequence and then is discharged from the exhaust through hole 301, finally is discharged from a wellhead, meanwhile, the oil-containing bubbles are filtered and remained below the device when passing through the filter layer 18, collected and discharged from the long-strip slits 1901, finally is pumped out by the oil pump, and clean gas which is not oil-containing is released by the wellhead can be recycled.
Lifting and deblocking:
1. the pipe column is lifted up, the upper joint 1 drives the upper pipe 2, the central pipe 7, the shunt tubes 4 and the deblocking cylinder 5 to move upwards synchronously, the rubber cylinder 12 forms great friction force with the sleeve after being sealed up, the pipe column is fixed at the original position, and the shearing pin 11 is sheared under the action of the lifting force.
2. Continuing to lift the pipe column, the valve core 8 moves upwards under the action of the spring 9, and the valve core 8 is in a continuous sitting state, namely the liquid inlet 501 is still in a closed state.
3. And the pipe column is lifted continuously, a decompression through hole 502 on the decompression cylinder 5 is exposed, namely the decompression through hole 502 is communicated with the annular inner cavity 503, liquid in the rubber cylinder 12 can be discharged out of the decompression cylinder 5 through the decompression through hole 502, the liquid in the rubber cylinder 12 is decompressed, the rubber cylinder 12 is retracted under the action of elastic force, and the fire drive effective oil well casing gas oil-containing bubble shearing oil filtering control device is unsealed.
For ease of understanding and description, the present invention is described in terms of absolute positional relationships, wherein the azimuth term "upper" indicates the upper direction in fig. 1 and "lower" indicates the lower direction in fig. 1. The present invention is described using the viewing angle of the reader or user, but the above directional terms are not to be interpreted or construed as limiting the scope of the present invention.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical characteristics, the technical characteristics and technical scheme and the technical scheme can be freely combined for use.
Claims (10)
1. The utility model provides a fire drive receives oily bubble of effect oil well casing gas and cuts oil strain controlling means, its characterized in that, fire drive receives oily bubble of effect oil well casing gas and cuts oil strain controlling means includes interior center tube, interior center tube contains shunt tubes (4), setting deblocking mechanism and bubble shear rupture mechanism that from the top down overlaps in proper order outward, interior center tube with be equipped with exhaust passage (22) between the setting deblocking mechanism, bubble shear rupture mechanism contains filter layer (18) and slotted screen pipe (19) that interior overcoat was established, contains liquid inlet channel (401) and exhaust channel (402) in the pipe wall of shunt tubes (4), liquid in the interior center tube can be through this setting deblocking mechanism of inlet channel (401) entering and make this setting deblocking mechanism seat seal, can break after the oily bubble gets into slotted screen pipe (19), the gaseous in the oily bubble can pass through filter layer (18), exhaust passage (22) and exhaust channel (402) in proper order after discharging this fire drive receives oily bubble of effect oil well casing gas and cuts oil strain controlling means.
2. The device for controlling the oil-bearing bubble shearing and oil-filtering of the casing gas of the fireflood effect oil well according to claim 1, wherein the inner central tube comprises an upper central tube (2), a central tube (7) and a lower central tube (17) which are sequentially arranged from top to bottom, the bubble shearing and cracking mechanism is sleeved outside the lower central tube (17), a strip-shaped slot (1901) is formed in the wall of the slot screen tube (19), and the filter layer (18) comprises ceramic sand.
3. The oil-containing bubble shearing and filtering control device for the fireflood effect oil well casing gas according to claim 2, wherein an air passing baffle (15) and a filter screen (16) which are arranged in a vertically stacked manner are arranged above the bubble shearing and cracking mechanism, the air passing baffle (15) and the filter screen (16) can block the filter layer (18) from moving upwards, and gas in the oil-containing bubbles can enter the exhaust channel (22) after passing through the filter layer (18), the air passing baffle (15) and the filter screen (16) in sequence.
4. A fire driven effective oil well casing gas oil-bearing bubble shearing oil filtering control device according to claim 3, characterized in that a liner tube (6) is sleeved between the central tube (7) and the setting deblocking mechanism, an annular exhaust channel (22) is formed between the central tube (7) and the liner tube (6), a connecting through hole (601) is formed in the lower portion of the liner tube (6), the lower end of the liner tube (6) is abutted to an air passing baffle (15), an axial through hole (1501) is formed in the air passing baffle (15), and the connecting through hole (601) is communicated with the axial through hole (1501).
5. The oil-bearing bubble shearing and oil-filtering control device for the fireflood-effect oil well casing gas is characterized in that an air collecting cylinder (14) is arranged between the setting and deblocking mechanism and the bubble shearing and cracking mechanism, the air collecting cylinder (14) is sleeved outside the liner tube (6), an annular cavity (1401) is formed between the air collecting cylinder (14) and the liner tube (6), and the axial through hole (1501) is communicated with the connecting through hole (601) through the annular cavity (1401).
6. The oil-bearing bubble shearing and oil filtering control device for the fireflood effect oil well casing gas is characterized in that the setting and deblocking mechanism comprises a deblocking cylinder (5), an upper jacket (10), a rubber cylinder (12) and a lower jacket (13) which are sequentially connected from top to bottom, an annular inner cavity (503) is formed between the deblocking cylinder (5) and a liner tube (6), a valve core (8) and a spring (9) are arranged in the annular inner cavity (503), the valve core (8) is in sealing connection with the liner tube (6), a liquid inlet (501) is formed between the deblocking cylinder (5) and the liner tube (6), the valve core (8) is in butt joint with the deblocking cylinder (5), and the valve core (8) can open or close the liquid inlet (501).
7. The oil-bearing bubble shearing and oil-filtering control device for the gas-bearing oil well casing of the fire drive effect according to claim 6, wherein the upper end of the upper sheath (10) is sleeved in the lower end of the deblocking cylinder (5), a shearing pin (11) is connected between the upper sheath (10) and the deblocking cylinder (5), the upper end of the spring (9) is abutted with the valve core (8), the lower end of the spring (9) is abutted with the upper sheath (10), an annular gap exists between the upper sheath (10) and the liner tube (6), the upper sheath (10) is in sealing connection with the deblocking cylinder (5), and liquid can sequentially enter the space between the rubber cylinder (12) and the liner tube (6) through the liquid inlet (501) and the annular gap.
8. The oil-bearing bubble shearing and oil-filtering control device for the casing gas of the fire driven effective oil well according to claim 7 is characterized in that a decompression through hole (502) is formed in the side wall of the deblocking cylinder (5), the decompression through hole (502) is located above the shearing pin (11), and when the shearing pin (11) is sheared, the decompression through hole (502) can be communicated with the annular inner cavity (503) in the process that the deblocking cylinder (5) moves upwards relative to the upper sheath (10).
9. The oil-bearing bubble shearing and filtering control device for the casing gas of the fire driven effective oil well according to claim 6 is characterized in that the lower part of the shunt tube (4) is fixedly connected with the deblocking cylinder (5) and the central tube (7), the liquid inlet duct (401) comprises a horizontal section (4011) and a vertical section (4012) which are sequentially connected up and down, the inner end of the horizontal section (4011) is communicated with the inner flow passage of the shunt tube (4), the outer end of the horizontal section (4011) is communicated with the upper end of the vertical section (4012), the lower end of the vertical section (4012) is communicated with the liquid inlet (501), the exhaust duct (402) is axially communicated with the shunt tube (4), and the lower end of the exhaust duct (402) is communicated with the exhaust passage (22).
10. The oil-bearing bubble shearing and oil-filtering control device for the casing gas of the fire driven effective oil well according to claim 9, wherein an upper joint (1) is externally connected to the upper end of the upper pipe (2), the upper part of the shunt pipe (4) is connected with the lower part of the upper pipe (2), an annular space (403) is formed between the upper joint (1) and the shunt pipe (4), an outlet ring (3) is sleeved outside the annular space (403), an exhaust through hole (301) is formed in the side wall of the outlet ring (3), and the exhaust through hole (301) is communicated with the annular space (403).
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| CN202011095140.3A CN114370262B (en) | 2020-10-14 | 2020-10-14 | Oil-bearing bubble shearing and oil-filtering control device for casing gas of fireflood affected oil well |
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| CN202011095140.3A CN114370262B (en) | 2020-10-14 | 2020-10-14 | Oil-bearing bubble shearing and oil-filtering control device for casing gas of fireflood affected oil well |
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