CN219993668U - Multi-stage hydraulic setting same-well injection and production system pipe column - Google Patents
Multi-stage hydraulic setting same-well injection and production system pipe column Download PDFInfo
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- CN219993668U CN219993668U CN202321425690.6U CN202321425690U CN219993668U CN 219993668 U CN219993668 U CN 219993668U CN 202321425690 U CN202321425690 U CN 202321425690U CN 219993668 U CN219993668 U CN 219993668U
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- 238000002347 injection Methods 0.000 title claims abstract description 89
- 239000007924 injection Substances 0.000 title claims abstract description 89
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000004873 anchoring Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003129 oil well Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 241000242541 Trematoda Species 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 8
- 241000935974 Paralichthys dentatus Species 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model discloses a multi-stage hydraulic setting same-well injection and production system pipe column, which relates to the technical field of oil field oil production pipe columns and comprises an upper joint, a hydraulic packer, a pipe column centering device and a hydraulic anchoring device which are sequentially connected from top to bottom, wherein the hydraulic packer is provided with multiple stages, the multiple stages of hydraulic packers are connected in series up and down, and a water injection control device is arranged between the adjacent hydraulic packers; an oil path channel and a water path channel are arranged in a pipe column of the multi-stage hydraulic setting same-well injection and production system, after oil well liquid is separated by an underground oil-water separation facility, oil enters the oil path channel, flows to a ring sleeve space through an oil path outlet, and is produced through an oil pump; water enters the waterway channel, reaches the water injection layer and is injected into the stratum through the waterway outlet; the device has simple structure, can realize the same-well injection and production function through the double-channel structure, greatly reduces the liquid yield on the ground, and realizes the yield increase, synergy and cost reduction.
Description
Technical Field
The utility model relates to the technical field of oil field oil extraction pipe columns, in particular to a pipe column of a multi-stage hydraulic setting same-well injection and production system.
Background
The water content of the produced liquid of the oil well is high, the sewage treatment cost is increased, and the water injection cost is increased. The same well injection and production system pipe column is an important underground system pipe column in the oil field development process and is used for realizing oil extraction and reinjection in the same well.
In order to realize yield and efficiency increase and reduce production cost, development of a novel tubular column of the same-well injection and production system is urgently needed.
Disclosure of Invention
The utility model provides a multi-stage hydraulic setting same-well injection and production system pipe column for reducing the production cost of a high-water-content oil well and realizing yield increase and efficiency increase.
The technical scheme of the utility model is as follows: the multi-stage hydraulic setting same-well injection and production system pipe column comprises an upper joint, a hydraulic packer, a pipe column righting device and a hydraulic anchoring device which are sequentially connected from top to bottom, wherein the hydraulic packer is provided with multiple stages, the multiple stages of hydraulic packers are connected in series up and down, and a water injection control device is arranged between the adjacent hydraulic packers;
an oil channel and a water channel are arranged in the pipe column of the multi-stage hydraulic setting same-well injection and production system, an oil channel inlet of the oil channel is a sieve opening on the outer wall of the pipe column at the lower end of the lowest-stage hydraulic packer, and an oil channel outlet is a sieve opening on the outer wall of the upper joint; the water channel comprises a water channel, a water channel outlet and a water injection control device, wherein the water channel inlet of the water channel is the lower end of an inner hole of the hydraulic anchoring device, and the water channel outlet is the outer wall outlet of the water injection control device; after oil well liquid is separated by the underground oil-water separation facility, oil enters an oil path channel, flows to a ring sleeve space through an oil path outlet, and is extracted through an oil pump; the water enters the waterway channel, reaches the water injection layer and is injected into the stratum through the waterway outlet.
Preferably, the hydraulic packer comprises a central pipe, wherein the central pipe is of a double-layer structure with an annular flow passage, and a connecting pipe, a rubber cylinder group, a multi-stage hydraulic group and a clamping spring sleeve are sequentially arranged on the outer side of the central pipe from top to bottom;
the multistage hydraulic group comprises a plurality of sliding pistons which are connected on the peripheral surface of the central tube in a sliding sealing manner, and sliding sleeves of which two ends are respectively connected on the peripheral surfaces of two adjacent sliding pistons;
a positioning sleeve is fixedly arranged on the outer peripheral surface of the central tube and positioned between two adjacent sliding pistons, the outer peripheral surface of the positioning sleeve is in sliding sealing fit with the inner peripheral surface of the sliding sleeve, and a first pressure transmission gap is arranged between the top of the positioning sleeve and the adjacent sliding pistons;
an annular step is arranged at the bottom of the outer peripheral surface of the central tube, a second pressure transmission gap is arranged between the top of the annular step and the adjacent sliding piston, and bridge type pressure guide channels which are used for communicating the inner cavity of the central tube with the first pressure transmission gap and the second pressure transmission gap are respectively arranged on the central tube;
the clamping spring sleeve is sleeved outside the annular step in a sliding manner, the top of the clamping spring sleeve is connected with the adjacent sliding piston, a shearing pin is arranged between the clamping spring sleeve and the annular step, a clamping groove part is arranged on the inner circumferential surface of the clamping spring sleeve, and a clamping spring matched with the clamping groove part is arranged on the outer circumferential surface of the annular step;
the top of center tube and connecting pipe is connected with the top and connects, offer the bypass runner with the annular space runner intercommunication of center tube on the wall of top connects.
Preferably, the central tube comprises an inner tube body and an outer tube body, and a plurality of spacer blocks are connected between the inner tube body and the outer tube body; the lower end of the outer pipe body of the lowest hydraulic packer is provided with sieve pores communicated with the annular flow passage.
Preferably, the water injection control device comprises a main body, a constant-current plug, a safety valve and a time-delay automatic valve, wherein the constant-current plug is arranged in a groove on the outer wall of the main body and is communicated with the inner cavity of the main body and an external water injection layer.
Preferably, a long hole for installing a time-delay automatic valve is axially formed in the pipe wall of the main body, the time-delay automatic valve comprises a slide valve, a spring, a stop block, a soluble metal body and a locking cap, the spring, the slide valve and the soluble metal body are sequentially arranged in the long hole, the stop block is installed at one end of the long hole and used for compressing the spring, the locking cap is installed at the other end of the long hole and used for supporting the soluble metal body, and a through hole is formed in the locking cap;
the pipe wall of the main body is provided with a first communication hole for communicating the inner cavity of the main body with the long hole and a second communication hole for communicating the long hole with the outside of the main body, the slide valve is a columnar body, and a communication cavity is formed in the slide valve; before the soluble metal body is dissolved, the first communication hole, the communication cavity and the second communication hole are communicated to form a communication channel; after the soluble metal body dissolves, the spool valve moves and the flow passage is broken.
Preferably, the first communication hole and the second communication hole are arranged in a vertically staggered mode, the slide valve is provided with two stages of sealing rings, the two stages of sealing rings are respectively positioned at the upper side and the lower side of the communication cavity, and before the soluble metal body is dissolved, the first communication hole and the second communication hole are positioned between the two stages of sealing rings; after the soluble metal body is dissolved, the primary seal ring is located between the first communication hole and the second communication hole.
Preferably, the friction plate central tube, the friction body, the rectangular spring, the friction plate and the compression ring of the tubular column righting device are fixedly sleeved on the outer side of the friction plate central tube, and the outer wall of the friction body is provided with a groove for installing the rectangular spring and the friction plate; the rectangular spring is arranged on the inner side of the friction plate, and the friction plate is pressed in the groove on the outer wall of the friction body through the pressing ring; the friction plates are arranged on the outer wall of the friction body in a circumferential array.
Preferably, the hydraulic anchoring device comprises an anchor body, tension springs, a pressing sheet and a fluke, wherein a plurality of holes for installing the tension springs and the flukes are formed in the outer wall of the anchor body, and the flukes and the tension springs are limited in the holes in the outer wall of the anchor body through the pressing sheet; the hole bottom is provided with a through hole communicated with the inner cavity of the anchor body.
Compared with the prior art, the utility model has the following advantages:
the device has simple structure, can realize the same-well injection and production function through a double-channel structure, greatly reduces the liquid yield on the ground, and realizes the yield increase, synergy and cost reduction; the hydraulic packer is provided with a multistage pressure cavity structure, and the pressure of the multistage pressure cavities is superposed and can act on the packing rubber cylinder at the same time, so that the setting under the condition of low pressure is realized; the hydraulic packer can be used in series up and down in multiple stages, so that the requirement of underground separate-layer water injection is met; the water injection control device can adjust and control the water injection rate according to the injection requirement of the water injection layer; the delay automatic valve can be automatically closed according to the design time, and the seal inspection of each level of packer can be realized according to the change of the load of the injection pump caused by the change of the water injection pressure before and after the delay automatic valve is closed; the packer is tested under dynamic condition, i.e. the sealing performance of the packer is actually verified after the injection pump works.
Drawings
FIG. 1 is a schematic view of the upper part of the present utility model;
FIG. 2 is a schematic view of the lower part of the present utility model;
FIG. 3 is a schematic view of the upper half of the hydraulic packer;
FIG. 4 is a schematic view of the lower half of the hydraulic packer;
FIG. 5 is a schematic diagram of a water injection control device;
fig. 6 is a schematic structural view of a tubular string centralizer and a hydraulic anchor.
In the figure: 1. the hydraulic packer comprises an upper joint, 2, a hydraulic packer, 201, an upper joint, 202, a connecting pipe, 203, a central pipe, 204, a rubber sleeve, 205, a spacer ring, 206, a sliding piston, 207, a sleeve, 208, a sleeve, 209, a first pressure transmission gap, 210, a clamping spring, 211, a shear pin, 212, a clamping spring sleeve, 213, a clamping groove part, 214, an annular step, 215, a bridge type pressure guide channel, 216, a second pressure transmission gap, 3, a water injection control device, 31, a constant flow plug, 32, a safety valve, 321, a plug, 322, a sealing block, 323, a compression spring, 324, a valve ball, 33, a time delay automatic valve, 331, a soluble metal body, 332, a slide valve, 333, a spring, 334, a stop, 335, a locking cap, 34, a main body, 341, a first communication hole, 342, a second communication hole, 343, a communication cavity, 4, a tubular string righting device, 401, a friction plate central pipe, 402, a friction body, 403, a rectangular spring, 404, a friction plate, 405, a compression ring, 5, a hydraulic device, a tension spring, an anchor, 504, a anchor body, a clamp body, a 503, a clamp body 503, a clamp body and a clamp.
K11, an oil path inlet, K12, an oil path outlet, K21, a water path inlet, K22, a water path outlet, L1, an oil path channel, L2 and a water path channel.
Detailed Description
The utility model is further illustrated by the following examples in connection with the accompanying drawings.
Example 1
Referring to fig. 1-6, a multi-stage hydraulic setting same-well injection and production system pipe column comprises an upper joint 1, a hydraulic packer 2, a pipe column centering device 4 and a hydraulic anchoring device 5 which are sequentially connected from top to bottom, wherein the hydraulic packer 2 is provided with multiple stages, the multi-stage hydraulic packer 2 is connected in series up and down, and a water injection control device 3 is arranged between the adjacent hydraulic packers 2;
an oil channel L1 and a water channel L2 are arranged in the pipe column of the multi-stage hydraulic setting same-well injection and production system, an oil channel inlet K11 of the oil channel L1 is a sieve pore on the outer wall of the pipe column at the lower end of the lowest-stage hydraulic packer 2, and an oil channel outlet K12 is a sieve pore on the outer wall of the upper joint 1; the waterway inlet K21 of the waterway channel L2 is the lower end of the inner hole of the hydraulic anchoring device 5, and the waterway outlet K22 is the outer wall outlet of the water injection control device 3; after oil well liquid is separated by the underground oil-water separation facility, oil enters an oil path channel L1, flows to a ring sleeve space through an oil path outlet K12 and is extracted through an oil pump; after water enters the waterway channel L2 and reaches the water injection layer, the water is injected into the stratum through the waterway outlet K22.
The hydraulic packer 2 comprises a central pipe 203, wherein the central pipe 203 is of a double-layer structure with an annular flow passage, and a connecting pipe 202, a rubber 204 group, a multi-stage hydraulic group and a clamp spring sleeve 212 are sequentially arranged on the outer side of the central pipe 203 from top to bottom;
the multi-stage hydraulic group comprises a plurality of sliding pistons 206 which are connected on the outer peripheral surface of the central tube 203 in a sliding sealing manner, and sliding sleeves 208 of which two ends are respectively connected on the outer peripheral surfaces of two adjacent sliding pistons 206;
a positioning sleeve 207 is fixedly arranged on the outer peripheral surface of the central tube 203 and positioned between two adjacent sliding pistons 206, the outer peripheral surface of the positioning sleeve 207 is in sliding sealing fit with the inner peripheral surface of a sliding sleeve 208, and a first pressure transmission gap 209 is arranged between the top of the positioning sleeve 207 and the adjacent sliding pistons 206;
an annular step 214 is arranged at the bottom of the outer peripheral surface of the central tube 203, a second pressure transmission gap 216 is arranged between the top of the annular step 214 and the adjacent sliding piston 206, and bridge type pressure guide channels 215 which are used for communicating the inner cavity of the central tube 203 with the first pressure transmission gap 209 and the second pressure transmission gap 216 are respectively arranged on the central tube 203;
the clamping spring sleeve 212 is sleeved outside the annular step 214 in a sliding manner, the top of the clamping spring sleeve 212 is connected with the adjacent sliding piston 206, a shearing pin 211 is arranged between the clamping spring sleeve 212 and the annular step 214, a clamping groove part 213 is arranged on the inner circumferential surface of the clamping spring sleeve 212, and a clamping spring 210 matched with the clamping groove part 213 is arranged on the outer circumferential surface of the annular step 214;
the top of the central tube 203 and the connecting tube 202 are connected with an upper joint 201, and a bypass runner communicated with an annular runner of the central tube 203 is arranged on the wall of the upper joint 201.
The central tube 203 comprises an inner tube body and an outer tube body, and a plurality of spacer blocks are connected between the inner tube body and the outer tube body; the lower end of the outer pipe body of the lowest hydraulic packer 2 is provided with sieve pores communicated with the annular flow passage.
The water injection control device 3 comprises a main body 34, a constant flow blanking plug 31, a safety valve 32 and a time delay automatic valve 33, wherein the constant flow blanking plug 31 is arranged in a groove on the outer wall of the main body 34 and is communicated with the inner cavity of the main body 34 and an external water injection layer; the constant-flow plug 31 can adjust and control the water injection rate by adjusting the water nozzle parameters of the constant-flow plug 31 according to the injection requirement of the water injection layer.
A long hole for installing the time delay automatic valve 33 is axially formed in the pipe wall of the main body 34, the time delay automatic valve 33 comprises a slide valve 332, a spring 333, a stop block 334, a soluble metal body 331 and a locking cap 335, the spring 333, the slide valve 332 and the soluble metal body 331 are sequentially arranged in the long hole, the stop block 334 is installed at one end of the long hole and used for compressing the spring 333, the locking cap 335 is installed at the other end of the long hole and used for supporting the soluble metal body 331, and a through hole is formed in the locking cap 335;
the wall of the main body 34 is provided with a first communication hole 341 for communicating the inner cavity of the main body 34 with the long hole and a second communication hole 342 for communicating the long hole with the outside of the main body 34, the slide valve 332 is a columnar body, and a communication cavity 343 is arranged in the slide valve; before the soluble metal body 331 is dissolved, the first communication hole 341, the communication cavity 343, and the second communication hole 342 are communicated to form a through-flow channel; after the soluble metal body 331 is dissolved, the spool 332 moves and the flow passage is opened.
After the multistage hydraulic packer 2 is set, whether the hydraulic packer 2 is set or not can be judged according to the change of the load of the injection pump caused by the change of the injection pressure before and after the delay automatic valve 33 is closed, so that the seal checking work of the packer is realized. The dissolution time of the soluble metal body 331 of the delay automatic valve 33 is adjusted, so that the closing time of each delay automatic valve 33 is different, and the sectional seal inspection of the packer of each stage of the whole tubular column is realized.
The tubular column righting device 4 comprises a friction plate central tube 401, a friction body 402, a rectangular spring 403, a friction plate 404 and a compression ring 405, wherein the friction body 402 is fixedly sleeved on the outer side of the friction plate central tube 401, and the outer wall of the friction body is provided with a groove for installing the rectangular spring 403 and the friction plate 404; the rectangular spring 403 is arranged on the inner side of the friction plate 404, and the friction plate 404 is pressed into a groove on the outer wall of the friction body 402 through the pressing ring 405; the plurality of friction plates 404 are arranged on the outer wall of the friction body 402 in a circumferential array, and the friction plates 404 are driven by the rectangular springs 403 to synchronously move along the radial direction and contact with the inner wall of the casing, so that the righting effect of the whole tubular column is realized.
The hydraulic anchoring device 5 comprises an anchor body 501, a tension spring 502, a pressing sheet 503 and a fluke 504, wherein a plurality of holes for installing the tension spring 502 and the fluke 504 are formed in the outer wall of the anchor body 501, and the fluke 504 and the tension spring 502 are limited in the holes in the outer wall of the anchor body 501 through the pressing sheet 503; the hole bottom is provided with a through hole communicated with the inner cavity of the anchor body 501. After the underground injection pump works, the water pressure presses out the fluke 504, and the teeth of the fluke 504 are tightly attached to the inner wall of the casing, so that the anchoring setting at the bottom of the pipe column is realized. The downhole injection pump is deactivated and the pressure is removed and the extension spring 502 pulls the fluke 504 back into place.
The oil path channel L1 is formed by connecting an annular flow channel of the central tube 203 of the hydraulic packer 2 and a long flow channel axially communicated with the tube wall of the main body 34 of the water injection control device 3, and the water path channel L2 is formed by connecting an inner cavity of the anchor body 501, an inner cavity of the friction plate central tube 401, an inner cavity of the central tube 203 and an inner cavity of the main body 34.
When in use, the method comprises the following steps:
firstly, the upper part of the pipe column is connected with an oil pump, the lower part of the pipe column is connected with an injection pump, the lower part of the injection pump is connected with an underground oil-water separation facility, and the whole pipe column is put into a well after connection is completed;
next, after the hydraulic anchoring device is lowered to a preset position, the underground oil-water separation facility, the injection pump and the oil pump work, and the hydraulic anchoring device 5 realizes anchoring setting by means of hydraulic pressure;
next, the multistage hydraulic packer 2 completes setting by means of hydraulic pressure: the hydraulic pressure enters the first pressure transmission gap 209 and the second pressure transmission gap 216 through the bridge type pressure guide channel 215, then the sliding piston 206 is pushed to ascend, the sliding piston 206 is linked with the sliding sleeve 208 and the clamp spring sleeve 212 to ascend together, the uppermost sliding piston 206 presses the rubber barrel 204 to seal in the ascending process, and then the clamping groove part 213 is matched with the clamp spring 210 to lock the positions of the sliding piston 206, the sliding sleeve 208 and the clamp spring sleeve 212, so that the sealing operation is completed.
Next, each of the delay automatic valves 33 is sequentially closed according to the designed delay time requirement. According to the change of the load of the injection pump caused by the change of the water injection pressure before and after the time delay automatic valve 33 is closed, whether the two-stage hydraulic packer 2 of the reinjection layer corresponding to the time delay automatic valve 33 is completely set or not can be judged, and if the load of the injection pump is increased, the two-stage hydraulic packer 2 is completely set; if the load of the injection pump is unchanged, the incomplete setting is shown in the two-stage hydraulic packer 2; the seal inspection is performed step by step according to the closing time of each time delay automatic valve 33.
And next, after the seal checking work of the hydraulic packers 2 of all reinjection layers is completed, the production operation work is normally carried out.
The device has simple structure, can realize the same-well injection and production function through a double-channel structure, greatly reduces the liquid yield on the ground, and realizes the yield increase, synergy and cost reduction; the hydraulic packer 2 has a multi-stage pressure cavity structure, and the pressure of the multi-stage pressure cavities is superposed and can act on the packer rubber 204 at the same time, so that the setting under the low pressure condition is realized; the hydraulic packer 2 can be used in series up and down in multiple stages, so that the requirement of underground separate-layer water injection is met; the water injection control device 3 can adjust and control the water injection rate according to the injection requirement of the water injection layer; the delay automatic valve 33 can be automatically closed according to the design time, and the seal inspection of the packer at each level can be realized according to the change of the load of the injection pump caused by the change of the water injection pressure before and after the delay automatic valve is closed; the packer is tested under dynamic condition, i.e. the sealing performance of the packer is actually verified after the injection pump works.
Example two
As a preferred embodiment of the present utility model, the present embodiment optimizes the structure of the set of glue cylinders 204 and the clamping groove 213 based on the first embodiment, specifically:
referring to fig. 3-4, in this embodiment, the set of rubber drums 204 includes a middle rubber drum 204 and side rubber drums 204 distributed on both sides of the middle rubber drum 204, and a spacer ring 205 is provided between the middle rubber drum 204 and the side rubber drums 204. Through the design of multiunit packing element 204 and spacer 205, increase packing element 204 and pit shaft contact surface, improve the stability of setting.
The clamping groove 213 protrudes from the inner circumferential surface of the clamping spring sleeve 212, and the upper end of the clamping groove 213 has a slope-shaped structure. Through this structural design, when the shear pin 211 is upwards moved after the jump ring cover 212 breaks, contact jump ring 210 earlier by the domatic structure of draw-in groove portion 213 upper end to oppress jump ring 210 elasticity shrink, draw-in groove portion 213 continues upwards, and when jump ring 210 corresponds with the recess position on draw-in groove portion 213, jump ring 210 elasticity resets and extends into the recess, locks the position of jump ring cover 212.
Example III
As a preferred embodiment of the present utility model, the present embodiment optimizes the structure of the safety valve 32 based on the first embodiment, specifically:
referring to fig. 5, in the present embodiment, the safety valve 32 is mounted in an axial long hole of the outer wall of the main body 34 of the water injection control device 3, and includes a plug 321, a seal block 322, a compression spring 323, and a valve ball 324. The safety valve 32 has two functions, namely, a one-way valve function, and the liquid channel which enters the inner cavity from the outside of the water injection control device 3 is blocked by virtue of the pressure spring 323 and the valve ball 324, so that liquid can only enter the outer cavity from the inner cavity of the water injection control device 3 through the liquid channel; and secondly, the safety valve 32 acts, when the overpressure of the liquid pressure in the inner cavity of the water injection control device 3 reaches a designed release value, the valve ball 324 is opened, and the channels of the inner cavity and the outer cavity of the water injection control device 3 are communicated to release the pressure.
Example IV
As a preferred embodiment of the present utility model, the structure of the automatic delay valve 33 is optimally designed based on the first embodiment, specifically:
referring to fig. 5, in the present embodiment, the first communication hole 341 and the second communication hole 342 of the automatic delay valve 33 are disposed vertically offset.
In addition, the slide valve 332 is provided with two stages of sealing rings, the two stages of sealing rings are respectively positioned at the upper side and the lower side of the communication cavity 343, and before the soluble metal body 331 is dissolved, the first communication hole 341 and the second communication hole 342 are positioned between the two stages of sealing rings; after the soluble metal body 331 is dissolved, a primary seal ring is located between the first communication hole 341 and the second communication hole 342.
After the automatic delay valve 33 is closed, the sealing ring between the first communication hole 341 and the second communication hole 342 can improve the tightness of the closed slide valve 332.
Example five
The lower tubular column of the embodiment is provided with three hydraulic packers 2 and two corresponding water injection control devices 3, wherein the three hydraulic packers 2 are a primary packer, a secondary packer and a tertiary packer from top to bottom in sequence, the two water injection control devices 3 are a first overcurrent device and a second overcurrent device from top to bottom in sequence, the timing closing time of the first overcurrent device is 12 hours, and the timing closing time of the second overcurrent device is 24 hours.
The method comprises the steps of (1) running a tubular column in a well, and starting an injection pump after the tubular column is run to a preset position, so that three packers are set and water injection is carried out; closing the first overflow device after 12 hours, wherein if the load of the injection pump is increased, the primary packer and the secondary packer are completely set, and if the load of the injection pump is unchanged, the primary packer and the secondary packer are not completely set; and closing the second overflow device after 24 hours, wherein if the load of the injection pump is increased, the second-stage packer and the third-stage packer are both completely set, and if the load of the injection pump is unchanged, the second-stage packer and the third-stage packer are not completely set.
The present utility model is not limited to the above-described embodiments, and various changes may be made without departing from the spirit of the present utility model within the knowledge of those skilled in the art, and the contents after the changes still fall within the scope of the present utility model.
Claims (8)
1. The utility model provides a multistage hydraulic pressure is sat and is annotated and is adopted system tubular column in same well, includes upper portion joint, hydraulic packer, tubular column righting device and hydraulic anchor device that from top to bottom connects gradually, its characterized in that: the hydraulic packers are provided with multiple stages, the multiple stages of hydraulic packers are connected in series up and down, and a water injection control device is arranged between the adjacent hydraulic packers;
an oil channel and a water channel are arranged in the pipe column of the multi-stage hydraulic setting same-well injection and production system, an oil channel inlet of the oil channel is a sieve opening on the outer wall of the pipe column at the lower end of the lowest-stage hydraulic packer, and an oil channel outlet is a sieve opening on the outer wall of the upper joint; the water channel comprises a water channel, a water channel outlet and a water injection control device, wherein the water channel inlet of the water channel is the lower end of an inner hole of the hydraulic anchoring device, and the water channel outlet is the outer wall outlet of the water injection control device; after oil well liquid is separated by the underground oil-water separation facility, oil enters an oil path channel, flows to a ring sleeve space through an oil path outlet, and is extracted through an oil pump; the water enters the waterway channel, reaches the water injection layer and is injected into the stratum through the waterway outlet.
2. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 1, wherein: the hydraulic packer comprises a central pipe, wherein the central pipe is of a double-layer structure with an annular flow channel, and a connecting pipe, a rubber cylinder group, a multi-stage hydraulic group and a clamping spring sleeve are sequentially arranged on the outer side of the central pipe from top to bottom;
the multistage hydraulic group comprises a plurality of sliding pistons which are connected on the peripheral surface of the central tube in a sliding sealing manner, and sliding sleeves of which two ends are respectively connected on the peripheral surfaces of two adjacent sliding pistons;
a positioning sleeve is fixedly arranged on the outer peripheral surface of the central tube and positioned between two adjacent sliding pistons, the outer peripheral surface of the positioning sleeve is in sliding sealing fit with the inner peripheral surface of the sliding sleeve, and a first pressure transmission gap is arranged between the top of the positioning sleeve and the adjacent sliding pistons;
an annular step is arranged at the bottom of the outer peripheral surface of the central tube, a second pressure transmission gap is arranged between the top of the annular step and the adjacent sliding piston, and bridge type pressure guide channels which are used for communicating the inner cavity of the central tube with the first pressure transmission gap and the second pressure transmission gap are respectively arranged on the central tube;
the clamping spring sleeve is sleeved outside the annular step in a sliding manner, the top of the clamping spring sleeve is connected with the adjacent sliding piston, a shearing pin is arranged between the clamping spring sleeve and the annular step, a clamping groove part is arranged on the inner circumferential surface of the clamping spring sleeve, and a clamping spring matched with the clamping groove part is arranged on the outer circumferential surface of the annular step;
the top of center tube and connecting pipe is connected with the top and connects, offer the bypass runner with the annular space runner intercommunication of center tube on the wall of top connects.
3. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 2, wherein: the central tube comprises an inner tube body and an outer tube body, and a plurality of spacer blocks are connected between the inner tube body and the outer tube body; the lower end of the outer pipe body of the lowest hydraulic packer is provided with sieve pores communicated with the annular flow passage.
4. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 1, wherein: the water injection control device comprises a main body, a constant-current plug, a safety valve and a time-delay automatic valve, wherein the constant-current plug is arranged in a groove on the outer wall of the main body and is communicated with the inner cavity of the main body and an external water injection layer.
5. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 4, wherein: the automatic delay valve comprises a slide valve, a spring, a stop block, a soluble metal body and a locking cap, wherein the spring, the slide valve and the soluble metal body are sequentially arranged in the long hole, the stop block is arranged at one end of the long hole and is used for compressing the spring, the locking cap is arranged at the other end of the long hole and is used for supporting the soluble metal body, and a through hole is formed in the locking cap;
the pipe wall of the main body is provided with a first communication hole for communicating the inner cavity of the main body with the long hole and a second communication hole for communicating the long hole with the outside of the main body, the slide valve is a columnar body, and a communication cavity is formed in the slide valve; before the soluble metal body is dissolved, the first communication hole, the communication cavity and the second communication hole are communicated to form a communication channel; after the soluble metal body dissolves, the spool valve moves and the flow passage is broken.
6. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 5, wherein: the first communication hole and the second communication hole are arranged in a vertically staggered mode, two stages of sealing rings are arranged on the slide valve, the two stages of sealing rings are respectively positioned at the upper side and the lower side of the communication cavity, and before the soluble metal body is dissolved, the first communication hole and the second communication hole are positioned between the two stages of sealing rings; after the soluble metal body is dissolved, the primary seal ring is located between the first communication hole and the second communication hole.
7. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 1, wherein: the friction plate central tube of the tubular column righting device, the friction body, the rectangular spring, the friction plate and the compression ring are fixedly sleeved on the outer side of the friction plate central tube, and the outer wall of the friction body is provided with a groove for installing the rectangular spring and the friction plate; the rectangular spring is arranged on the inner side of the friction plate, and the friction plate is pressed in the groove on the outer wall of the friction body through the pressing ring; the friction plates are arranged on the outer wall of the friction body in a circumferential array.
8. The multi-stage hydraulic setting same-well injection and production system pipe column according to claim 1, wherein: the hydraulic anchoring device comprises an anchor body, tension springs, a pressing sheet and flukes, wherein a plurality of holes for installing the tension springs and the flukes are formed in the outer wall of the anchor body, and the flukes and the tension springs are limited in the holes in the outer wall of the anchor body through the pressing sheet; the hole bottom is provided with a through hole communicated with the inner cavity of the anchor body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2023100926220 | 2023-02-10 | ||
| CN202310092622.0A CN115822508A (en) | 2023-02-10 | 2023-02-10 | Multi-stage hydraulic setting co-well injection and production system pipe column |
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| CN219993668U true CN219993668U (en) | 2023-11-10 |
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| CN202310092622.0A Pending CN115822508A (en) | 2023-02-10 | 2023-02-10 | Multi-stage hydraulic setting co-well injection and production system pipe column |
| CN202321425690.6U Active CN219993668U (en) | 2023-02-10 | 2023-06-06 | Multi-stage hydraulic setting same-well injection and production system pipe column |
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| CN202310092622.0A Pending CN115822508A (en) | 2023-02-10 | 2023-02-10 | Multi-stage hydraulic setting co-well injection and production system pipe column |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2846725Y (en) * | 2005-09-23 | 2006-12-13 | 高守君 | Recovery type high temperature high pressure packer |
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
| CN112240194B (en) * | 2020-11-17 | 2022-07-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
| CN114109329B (en) * | 2021-12-01 | 2022-10-04 | 东北石油大学 | Injection-production same-well device and injection-production same-well system |
| CN115306344B (en) * | 2022-08-17 | 2024-06-14 | 山东圣颐石油技术开发有限公司 | Prestress packing integrated device with double channels and application method thereof |
| CN115573684B (en) * | 2022-11-18 | 2023-04-07 | 山东圣颐石油技术开发有限公司 | Device for automatically closing overcurrent at fixed time and using method thereof |
| CN115613995B (en) * | 2022-12-16 | 2023-02-24 | 山东圣颐石油技术开发有限公司 | Multi-stage low-pressure driven double-working-flow-channel packer |
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