CN201202431Y - Integrated static hydraulic water injection packer for large steepness well - Google Patents
Integrated static hydraulic water injection packer for large steepness well Download PDFInfo
- Publication number
- CN201202431Y CN201202431Y CNU2008200801688U CN200820080168U CN201202431Y CN 201202431 Y CN201202431 Y CN 201202431Y CN U2008200801688 U CNU2008200801688 U CN U2008200801688U CN 200820080168 U CN200820080168 U CN 200820080168U CN 201202431 Y CN201202431 Y CN 201202431Y
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- central tube
- tube assembly
- water
- packer
- piston
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Abstract
The utility model discloses an integrated static hydraulic injection packer for a highly deviated well, which comprises a central tube assembly and a lower joint, wherein the upper end of the central tube assembly is connected with a rigid centralizer, a water distributor is arranged in the central tube assembly, the water distributor is equipped with a multi-water nozzle structure, the tube inner wall of the central tube assembly is equipped with a deblocking structure, and the tube outer wall of the central tube assembly is equipped with a static hydraulic setting structure. The rigid centralizer comprises a steel ball seat which is arranged on an outer surface which is arranged between the upper joint and a connecting sleeve, the static hydraulic setting structure comprises a closed cavity chamber, and the deblocking structure comprises an elastic claw which is arranged on the outer wall of the central tube assembly and is located on the lower portion of a piston in the static hydraulic setting structure. The integrated static hydraulic injection packer can solve the problems that an oil field layers and injects water in a high flow rate, multi-stage packers of the highly deviated well has excellent sealing and can safely deblock simultaneously, and the steel wire operation times are reduced and the like.
Description
Technical field
The utility model relates to a kind of seperated layer water injection device that is used for field produces, relates in particular to a kind of integrated water injection packer.
Background technology
Offshore oilfield cased hole completion water injection well is a highly declined deep well, and the individual layer water injection rate is generally at 500-600m
3/ d, individual layer injection allocation amount is big, and (onshore oil field individual well water injection rate is at 300m to need many water nozzle allotments
3/ d is following); For the separate layer water injection string of highly declined deep well, solve two difficult point problems, the one, the problem that sets between two parties of packer in the inclined shaft if packer is not placed in the middle in inclined shaft, makes the packing element radial force inhomogeneous, can influence its sealing; The deblocking problem of multiple-string packer in addition, if packer can cause a plurality of packer deblocking power big can not gradually deblocking, or deblocking not exclusively forms the piston pumping, even packer can not cause the well workover accident by deblocking.In addition, because injection allocation test pulling operation can cause operating cost very high often, so tubing string technology will reduce the steel wire operation number of times as far as possible, reduces production costs.
The utility model content
At existing problem in the above prior art, the utility model provides a kind of integrated hydrostatic water injection packer that is used for high angle hole, can satisfy the packer of oil field highly declined deep well, big discharge capacity seperated layer water injection needs, solve problems such as the big discharge capacity seperated layer water injection in oil field, highly declined deep well multiple-string packer sealing reliability, safe deblocking reliability and minimizing steel wire operation number of times.
In order to solve the problems of the technologies described above, the utility model is used for the technical scheme that the integrated hydrostatic water injection packer of high angle hole is achieved: comprise central tube assembly and lower contact, it is characterized in that: the rigidity centralizer that the upper end of described central tube assembly connects, be provided with injection well downhole flow regulator in the described central tube assembly, the inside pipe wall of described central tube assembly is provided with separates seal structure, and the pipe outer wall of described central tube assembly is provided with the hydrostatic structure that sets; Described rigidity centralizer comprises the top connection that connects successively, last seal nipple and adapter sleeve, external surface between described top connection and the adapter sleeve is provided with steel ball seat, be inlaid with steel ball on the described steel ball seat, be provided with long key between described upper sleeve gasket and the described adapter sleeve; The other end of described adapter sleeve is connected with described central tube assembly; Described injection well downhole flow regulator comprises a plurality of water out adapters that are positioned on the injection well downhole flow regulator seating nipple, be respectively arranged with the combination of a plurality of water nozzles on described each water out adapter, a plurality of water nozzles combinations on each water out adapter be distributed as per two water nozzles combination be positioned at the injection well downhole flow regulator seating nipple sustained height on; The described hydrostatic structure that sets comprises sealing shroud and the piston that is arranged on the central tube assembly outer wall, the external surface of described sealing shroud and piston is provided with a piston bush, constitutes an airtight chamber between described central tube assembly outer wall, sealing shroud, piston and the piston bush; The described seal structure of separating is by the elastic claw that is arranged on the central tube assembly outer wall, and the claw hook of described elastic claw up; Described elastic claw is arranged in the above-mentioned hydrostatic below that sets the structure piston.
The utility model is used for the integrated hydrostatic water injection packer of high angle hole, and wherein: described central tube assembly and described injection well downhole flow regulator seating nipple are structure as a whole.The number of the water nozzle combination that is provided with on each water out adapter of described injection well downhole flow regulator is 6.
Compared with prior art, the beneficial effect that the utility model had is as follows:
(1) in order to solve the needs of big discharge capacity water filling, be provided with by many water nozzles combining structure in the utility model, on injection well downhole flow regulator, designed six water nozzles,, assemble 6 7mm water nozzles under the sharp-tongued situation of 3MPa through the sharp-tongued test of water nozzle, can water filling 1400m
3/ d can satisfy the requirement of the big discharge capacity water filling of offshore oilfield.
(2) in order to solve between two parties the set problem of no anchor packer in inclined shaft, design the rigidity centralizer that integrates with the packer body in the utility model, thereby made whole tubing string more succinct, set upright better effects if.Because the structure that the rigidity centralizer adopts the conical surface to cooperate with steel ball, steel ball can produce displacement diametrically, thereby can reach the purpose of setting upright packer or allowing packer go into the well smoothly, has solved the problem of setting upright of packer in high angle hole.
(3) in order to solve the problem that multiple-string packer in the deep-well is difficult to resolve envelope, the utility model has been discarded the way of former employing deblocking shear pin, does not need to apply specially certain deblocking power and removes to cut off packer deblocking shear pin and just can realize the thorough deblocking of packer.Use the elastic claw that cooperates with piston to realize this function, when normally going into the well, piston is pressed in and guarantees on the elastic claw that packer connects together up and down; Packer is suppressed when setting, and under the tubing string weight effect of top, elastic claw and central tube can not thrown off, and guarantees the packer operate as normal; When wanting lift pipe string, put on portion's oil pipe on directly, elastic claw and central tube relatively move, and packing element is replied, and deblocking is reliable fully like this, and can not aspirate the effect of piston and cause the peril of well workover, be a kind of safer technology.
(4) in order to reduce wire Launching and Bailing operation number of times, packer is designed to hydrostatic setting, so do not need steel wire operation deliver special-purpose set that blanking plug blocks two weep holes on the packer central tube assembly can set packer, saved the wire Launching and Bailing operation, do not need to increase extra surface pump in addition yet and build the pressure, saved operating cost.
In a word, in the utility model,, solved the problem that in the big discharge capacity water injection technology of highly declined deep well, exists at present by the many water faucet structures on the injection well downhole flow regulator, rigidity centralizer, elastic claw connection, the hydrostatic combination that sets these four kinds of structures.
Description of drawings
Fig. 1 is the axial sectional view figure of the utility model integrated hydrostatic water injection packer body of being used for high angle hole;
Fig. 2-the 1st, the first half partial enlarged drawing of packer body shown in Figure 1;
Fig. 2-the 2nd, the Lower Half partial enlarged drawing of packer body shown in Figure 1;
Fig. 3 is the axial sectional view that the utility model is used for the integrated hydrostatic water injection packer injection well downhole flow regulator of high angle hole;
Fig. 4 is the partial enlarged drawing of water nozzle built-up section in the injection well downhole flow regulator shown in Figure 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The explanation of component and details in the accompanying drawing: 1 top connection, 2 steel ball seat, seal nipple on 3,4 long keys, 5 adapter sleeves, 6 central tube assemblies, 7 packing element seal combination, the 8 anti-shear pins, 9 sealing shrouds of setting, 10 piston bushs, 11 pistons, 12 elastic claws, 13 lock ring seats, 14 lock rings, 15 lock tubes, 16 lower contacts, 17 water out adapters, the combination of 18 water nozzles.
Shown in Fig. 1, Fig. 2-1 and Fig. 2-2, the integrated hydrostatic water injection packer that the utility model is used for high angle hole comprises central tube assembly 6 and lower contact 23, the upper end of described central tube assembly 6 is connected with the rigidity centralizer, be provided with injection well downhole flow regulator in the described central tube assembly 6, the inside pipe wall of described central tube assembly 6 is provided with separates seal structure, and the pipe outer wall of described central tube assembly 6 is provided with the hydrostatic structure that sets; Described rigidity centralizer comprises the top connection 1 that connects successively, last seal nipple 3 and adapter sleeve 5, external surface between described top connection 1 and the adapter sleeve 5 is provided with steel ball seat 2, be inlaid with steel ball on the described steel ball seat 2, be provided with long key 4 between described upper sleeve gasket 3 and the described adapter sleeve 5; The other end of described adapter sleeve 5 is connected with described central tube assembly 6.In order to solve between two parties the set problem of no anchor packer in inclined shaft, designed above-mentioned rigidity centralizer in the utility model, and together integrated with the packer body, make that whole tubing string is more succinct, set upright better effects if.Top connection 1 in the rigidity centralizer, last seal nipple 3, long key 4 can move around in adapter sleeve 5, the conical surface of top connection 1 lower end cooperates with steel ball like this, top connection 1 presses down and just can make the position that radially be projected into outermost of steel ball along tubing string, reaches the purpose of setting upright packer; Move in top connection 1 and just can make the steel ball withdrawal, allow packer go into the well smoothly, possessing has the rigidity of said structure centralizer, can solve the problem of setting upright of packer in high angle hole.
As shown in Figure 3 and Figure 4, described injection well downhole flow regulator comprises a plurality of water out adapters 17 that are positioned on the injection well downhole flow regulator seating nipple, be respectively arranged with a plurality of water nozzles combination 18 on described each water out adapter 17, a plurality of water nozzles combinations 18 on each water out adapter 17 be distributed as per two water nozzles combination 18 be positioned at the injection well downhole flow regulator seating nipple sustained height on.The number of the water nozzle combination that is provided with on each water out adapter of described injection well downhole flow regulator is 6.The mode of traditional in the past single water nozzle can't solve the needs of big discharge capacity water filling, therefore, the utility model proposes many water faucet structures, Fig. 4 shows, six water nozzle combinations 18 on the side direction of injection well downhole flow regulator, have been designed, through the sharp-tongued test of water nozzle, assemble 67 millimeters water nozzles under the sharp-tongued situation of 3MPa, can water filling 1400m
3/ d is enough to satisfy the requirement of the big discharge capacity water filling of offshore oilfield.In view of the above, designed the integrated injection well downhole flow regulator in the utility model, it can adorn two groups of water nozzle combinations, dispensing is two-layer, and injection well downhole flow regulator seating nipple and packer central tube integrate, such cooperation once cover packer and injection well downhole flow regulator can two layer positions of dispensing, and the big discharge capacity dispensing that a plurality of combinations just can be satisfied four layers or six layers has required.
Shown in Fig. 1 and Fig. 2-2, the described hydrostatic structure that sets comprises sealing shroud 9 and the piston 11 that is arranged on central tube assembly 6 outer walls, the external surface of described sealing shroud 9 and piston 11 is provided with a piston bush 10, constitutes an airtight chamber between the outer wall of described central tube assembly 6, sealing shroud 9, piston 11 and the piston bush 10.In order to reduce wire Launching and Bailing operation number of times, packer is designed to hydrostatic setting, not needing two weep holes with packer central tube assembly 6 just to block like this can set packer, its operating principle is to utilize above-mentioned airtight chamber, when under the packer in well, pressure in this chamber is atmospheric pressure, intensification along with depth of setting, the inside and outside differential pressure of chamber will be increasing relatively, cooperate the corresponding anti-shear pin 8 that sets again, just can utilize the pressure reduction of the head of liquid formation of this atmospheric air chamber and its outside to come compression packer packing element seal combination 7, set put in place after, by lock ring seat 13, lock ring 14, the retaining mechanism that lock ring cover 15 is formed will be locked the packing element in the packing element seal combination 7, guarantees sealing.Certainly anti-shear pin 8 power that set, the power that causes than the pressure reduction of predetermined depth of setting is big, so just can not set midway, the pressure that opening water filling after putting in place increases several MPas will be prevented setting shear pin 8 and just cut off and can set packer, and such benefit is exactly that weep hole on the water injection packer does not need to block, just the feign death injection well downhole flow regulator of water nozzle of launch-work not, just can set, saved the wire Launching and Bailing operation, also not needing in addition increases extra increase pump, has saved operating cost.
Shown in Fig. 2-2, the described seal structure of separating is by the elastic claw on the outer wall that is arranged on central tube assembly 6 12, and the claw hook of described elastic claw 12 up; Described elastic claw 12 is arranged in the above-mentioned hydrostatic below that sets structure piston 11.In order to solve the problem that multiple-string packer in the deep-well is difficult to resolve envelope, improved the way of former employing deblocking shear pin, cutting off of deblocking shear pin, being to rely on the frictional force of packing element and sleeve pipe to cut off the deblocking shear pin, is not very reliable sometimes, and the utility model has changed this pattern, use elastic claw 12 to realize this function, when normally going into the well, piston 11 is pressed in and guarantees on the elastic claw 12 that packer connects together up and down, normally to go into the well; After putting in place the top tubing string is pressed down, the outer wall that guarantees packer elastic claw 12 and central tube assembly 6 is not thrown off, packer is suppressed when setting like this, moves on the piston 11, at this moment, piston 11 breaks away from elastic claw 12, being that piston 11 is no longer pushed down elastic claw 12, is free state between elastic claw 12 and the central tube assembly 6, but because under the effect of top tubing string weight, elastic claw 12 and central tube assembly 6 can not thrown off, thereby guarantee the packer operate as normal; When wanting lift pipe string, on put on portion's oil pipe, elastic claw 12 moves relative to central tube assembly 6, packing element is replied, packer does not need to go to cut off just thorough deblocking of deblocking shear pin again, deblocking is reliable fully like this, and can not aspirate the effect of piston and cause the peril of well workover, compared with prior art be a kind of safer technology.
When using the utility model to be used for the integrated hydrostatic water injection packer of high angle hole, the number of plies of dispensing determines to be lowered to one or more these integrated water injection packers as required, and as the case may be with the supporting use of other packer, in addition, the well depth that is lowered to is as required loaded onto the anti-shear pin 8 that sets of suitable quantity, with guarantee packer under put in place before, can premature setting; The separate injection tubing string that adheres to specification is arrived desired depth down, the beginning water filling, water injection pressure reaches 5-6MPa, will prevent that setting shear pin cuts off, and packer promptly sets.
Although in conjunction with the accompanying drawings the utility model has been carried out foregoing description; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong to the row of protection of the present utility model.
Claims (3)
1. integrated hydrostatic water injection packer that is used for high angle hole, comprise central tube assembly and lower contact, it is characterized in that: the rigidity centralizer that the upper end of described central tube assembly connects, be provided with injection well downhole flow regulator in the described central tube assembly, the inside pipe wall of described central tube assembly is provided with separates seal structure, and the pipe outer wall of described central tube assembly is provided with the hydrostatic structure that sets;
Described rigidity centralizer comprises the top connection that connects successively, last seal nipple and adapter sleeve, and the external surface of described top connection lower end is the conical surface; External surface between described top connection and the adapter sleeve is provided with steel ball seat, is inlaid with steel ball on the described steel ball seat, is provided with long key between described upper sleeve gasket and the described adapter sleeve; The other end of described adapter sleeve is connected with described central tube assembly;
Described injection well downhole flow regulator comprises a plurality of water out adapters that are positioned on the injection well downhole flow regulator seating nipple, be respectively arranged with the combination of a plurality of water nozzles on described each water out adapter, a plurality of water nozzles combinations on each water out adapter be distributed as per two water nozzles combination be positioned at the injection well downhole flow regulator seating nipple sustained height on;
The described hydrostatic structure that sets comprises sealing shroud and the piston that is arranged on the central tube assembly outer wall, the external surface of described sealing shroud and piston is provided with a piston bush, constitutes an airtight chamber between described central tube assembly outer wall, sealing shroud, piston and the piston bush;
The described seal structure of separating is by the elastic claw that is arranged on the central tube assembly outer wall, and the claw hook of described elastic claw up; Described elastic claw is arranged in the above-mentioned hydrostatic below that sets the structure piston.
2. the integrated hydrostatic water injection packer that is used for high angle hole according to claim 1 is characterized in that: described central tube assembly and described injection well downhole flow regulator seating nipple are structure as a whole.
3. the integrated hydrostatic water injection packer that is used for high angle hole according to claim 1 is characterized in that: the number of the water nozzle combination that is provided with on each water out adapter of described injection well downhole flow regulator is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200801688U CN201202431Y (en) | 2008-04-24 | 2008-04-24 | Integrated static hydraulic water injection packer for large steepness well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200801688U CN201202431Y (en) | 2008-04-24 | 2008-04-24 | Integrated static hydraulic water injection packer for large steepness well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202431Y true CN201202431Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200801688U Expired - Fee Related CN201202431Y (en) | 2008-04-24 | 2008-04-24 | Integrated static hydraulic water injection packer for large steepness well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202431Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905462A (en) * | 2018-09-14 | 2020-03-24 | 中国石油天然气股份有限公司 | Water injection packer |
| CN113631794A (en) * | 2019-04-18 | 2021-11-09 | 哈利伯顿能源服务公司 | Anti-lift set for packer |
| CN116591648A (en) * | 2023-07-17 | 2023-08-15 | 大庆市璞庆钻采设备制造有限公司 | Water injection flow-adjustable water distributor |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
-
2008
- 2008-04-24 CN CNU2008200801688U patent/CN201202431Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905462A (en) * | 2018-09-14 | 2020-03-24 | 中国石油天然气股份有限公司 | Water injection packer |
| CN110905462B (en) * | 2018-09-14 | 2021-11-02 | 中国石油天然气股份有限公司 | Water injection packer |
| CN113631794A (en) * | 2019-04-18 | 2021-11-09 | 哈利伯顿能源服务公司 | Anti-lift set for packer |
| CN113631794B (en) * | 2019-04-18 | 2023-10-20 | 哈利伯顿能源服务公司 | Anti-front setting for packer |
| CN116591648A (en) * | 2023-07-17 | 2023-08-15 | 大庆市璞庆钻采设备制造有限公司 | Water injection flow-adjustable water distributor |
| CN116591648B (en) * | 2023-07-17 | 2023-09-29 | 大庆市璞庆钻采设备制造有限公司 | Water injection flow-adjustable water distributor |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
| CN116771310B (en) * | 2023-08-22 | 2023-12-29 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 25 North Street, Chaoyangmen, Beijing, Dongcheng District: 100010 Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China National Offshore Oil Corporation Address before: No. 25 North Street, Chaoyangmen, Beijing, Dongcheng District: 100010 Co-patentee before: CNOOC Oil Base Group Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20160424 |