CN102900410A - Repeated seat seal type packing water regulator - Google Patents
Repeated seat seal type packing water regulator Download PDFInfo
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- CN102900410A CN102900410A CN2012104080063A CN201210408006A CN102900410A CN 102900410 A CN102900410 A CN 102900410A CN 2012104080063 A CN2012104080063 A CN 2012104080063A CN 201210408006 A CN201210408006 A CN 201210408006A CN 102900410 A CN102900410 A CN 102900410A
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Abstract
The invention discloses a repeated seat seal type packing water regulator, and relates to a packing and water regulating tool for separate layer water injection of an oilfield water injection well. The repeatable seat seal type packing water regulator is integrated with an eccentric water regulator and a repeatedly-set hydraulic packer, has the function of an underground repeated seat seal of the packer and the functions of two eccentric water regulators, and simultaneously solves the problems of choke damage. The repeated seat seal type packing water regulator fits for the requirements of a layered water flood well with the wellhead pressure approaching that of a trunk line and with large interbed physical difference, fits for subdivision water injection of a plurality of thin interbeds, and improves the testing accuracy and the allocation efficiency of each single bed as well as the running and pulling efficiency of water nozzles; and the repeated seat seal type packing water regulator has the advantages of the existing eccentric separate layer injection technology without changing the existing running an pulling and separate layer testing modes and solves the technical problems that the hydraulic eccentric packing water regulator can not be subjected to seat seal after downhole unsealing due to creeping of a separate layer injection tubing string or other reasons, and the validity period of the separate layer injection is prolonged.
Description
Technical field
The present invention relates to a kind of packing, water-distributing tool of water injection well in oil fields seperated layer water injection.
Background technology
Now use a kind of multifunctional eccentric water distribution packer of technology (ZL2010206234.6), to utilize the work characteristics realization down-hole of inflatable packer to repeat setting, during the down-hole dispensing for guaranteeing K type packer set, need the sharp-tongued greater than 0.8 MPa of each layer water nozzle, require simultaneously pumping plant (main line) pressure greater than wellhead of water injection well injection pressure 2 MPa; Can not adapt to oil field dispensing well well head pressure high (or near mains pressure) and the large dispensing well demand of interlayer physical difference.
Analyze from the packing water distributor work characteristics, such as a kind of eccentric center water-dispensing packer (patent No. ZL 200720084806.9), water distribution packer is after the down-hole is setting, owing to string creep or other reason, make its deblocking, water distribution packer can not be implemented setting again, needs the former tubing string of proposition to renew water distribution packer and goes into the well; Because partially joining main body passageway bridge is not set, in the time of can dividing 4 layers with two water distribution packers, 3 ~ 4 layers will stop water filling when testing 1 ~ 2 layer, cause 4 laminar flow amounts, pressure data at same state admission, poor accuracy; Such technology has only been carried out bench-scale testing for this reason, is difficult to large scale application.
From the process characteristic analysis, some integrated technology has changed the eccentric testing mode, not the eccentric separated-injection technique on the absolute sense, such as diversion double-layer eccentric water distribution device (patent No. ZL 200520021400.7), combine the measuring technology of concentric integrated technique, be divided into two cover testers, once finish the independent flow of 2 ~ 4 intervals, pressure test, greatly increased the input cost of instrument and equipment.
Summary of the invention
The present invention is directed to hydraulic packer in the down-hole because of string creep or other reason, make its deblocking can not implement again setting technical problem, a kind of seat sealed type packing water distributor that repeats is proposed.
The present invention includes the upper exterior tube that is provided with axially extending bore, eccentric integrated entity is tightly connected in the upper exterior tube lower end, described eccentric integrated entity is provided with the central through hole that is communicated with the axially extending bore of upper exterior tube, offering axially parallel with central through hole, upper end at a sidewall of described eccentric integrated entity is that uncovered, lower end is the eccentric orfice of blind mouth, the two water nozzle blanking plugs of plant in described eccentric orfice, be fixedly installed interior guide cylinder in described upper exterior tube, described interior guide cylinder is provided with the gathering sill of sending into described blanking plug; Be tightly connected in eccentric integrated entity lower end lower outer pipe and interior connecting leg, described interior connecting leg is arranged in the lower outer pipe inner chamber, between interior connecting leg and the lower outer pipe annular gap is set; In described interior connecting leg, fairlead is set; Be nested with compound connecting leg in the annular gap between described interior connecting leg and lower outer pipe, the inner chamber of described compound connecting leg upper end is communicated with the eccentric orfice lower end of eccentric integrated entity, it is characterized in that having in the connection of described compound connecting leg lower end repeating setting hydraulic packer.
The present invention has an eccentric injection mandrel and one and repeats setting hydraulic packer and integrate, possess packer and repeat functions setting and two eccentric injection mandrels in the down-hole, solved simultaneously sharp-tongued problem, the present invention adapts to dispensing well well head pressure near mains pressure and the large dispensing well demand of interlayer physical difference, adapt to a plurality of short lap subdivision injections, improve each single-interval test accuracy rate and allotment efficient, improve the pulling efficient of water nozzle; The present invention does not change existing pulling and zonal testing mode, take into account the advantage of existing eccentric separated-injection technique, solve separate injection tubing string wriggling or other reason, caused the eccentric packing water distributor of hydraulic pressure at down-hole solution can not be the more setting technical barrier of being honored as a queen, prolonged the dispensing period of validity.
Of the present invention have repeat setting hydraulic packer and comprise central tube, the upper end of described central tube is fixedly connected on the lower end of compound connecting leg, between central tube top and the interior connecting leg sealing ring is set; Connect the well-flushing fluid cylinder in the compound connecting leg outside by C shape jump ring, arrange the piston type flushing valve in the well-flushing fluid cylinder above the well-flushing valve seat, be fixedly connected with long tubular well-flushing valve seat in the lower end of described well-flushing fluid cylinder, well-flushing fluid cylinder lateral wall below the piston type flushing valve is offered well-flushing fluid cylinder inlet opening, and the well-flushing fluid cylinder inner chamber of described piston type flushing valve top is communicated with interior connecting leg inner chamber; Offer the axially honeycomb duct 10-1 parallel with compound connecting leg axis in compound connecting leg, the inner chamber of described long tubular well-flushing valve seat is communicated with described honeycomb duct 10-1; Lower end at long tubular well-flushing valve seat is fixedly connected with support set, and the well-flushing valve seat overcoat above described support set is put packing element; The outside in the support set upper end connects exterior lock tube by anti-seat pin nail, sealing ring 19-1 is set between support set and exterior lock tube, exterior lock tube inner chamber above described sealing ring is communicated with the inner chamber of long tubular well-flushing valve seat, offer fluid hole at the exterior lock tube sidewall, tooth is colluded in exterior lock tube inwall setting below described fluid hole, arrange jump ring between support set and exterior lock tube, the front portion of described jump ring arranges with described and colludes the corpus unguis that tooth cooperates, and the rear portion of described jump ring arranges the jump ring oscillating control mechanism; Be nested with cylinder body at the central tube external seal, the upper end overhead of cylinder body arranges piston in the lower end of exterior lock tube in cylinder body, and piston is connected to the central tube lower end, and the inner chamber of cylinder block of described piston top is communicated with the central tube inner chamber, and the cylinder body of piston below is communicated with cylinder body is outside.
Jump ring oscillating control mechanism of the present invention comprises the little and inner large lock dog in outer end, the lock dog spacing hole that arranges at support set and the oblique groove of offering in center tube wall, described lock dog is placed in the lock dog spacing hole, described lock dog spacing hole outer end opening is less than the inner diameter of lock dog, described oblique groove is the cell body greater than the inner area of lock dog, when lock dog shifts out oblique groove, the outer end of lock dog is butted on the back of jump ring, the front portion of jump ring is driven to the exterior lock tube inwall, until the corpus unguis of jump ring front portion and the tooth that colludes of exterior lock tube are interlocked.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is two water nozzle plug structure schematic diagrames.
Fig. 3 is A-A profile among Fig. 1.
Fig. 4 is B-B profile among Fig. 1.
Fig. 5 is C-C profile among Fig. 1.
Fig. 6 is D-D profile among Fig. 1.
The specific embodiment
As shown in Figure 1, the present invention mainly is comprised of top connection 1, upper exterior tube 2, interior guide cylinder 3, bolt 5, eccentric integrated entity 6, lower outer pipe 7, interior connecting leg 8, fairlead 9, compound connecting leg 10, C shape jump ring 11, well-flushing fluid cylinder 12, piston type flushing valve 13, well-flushing valve seat 14, three packing elements 15, two spacer rings 16, pressure ring 17, support set 18, anti-seat pin nail 19, exterior lock tube 20, jump ring 21, lock dog 22, central tube 23, upper cylinder body 24, upper piston 25, lower cylinder body 26 and lower contacts 27 etc.
As shown in Figure 2, two water nozzle blanking plugs are comprised of locking fishing head 4-1, locking projection 4-6, inclined to one side 1 main body 4-2, upper water nozzle 4-3, inclined to one side 2 main body 4-4 and lower water nozzle pressure cap 4-5 etc.
Shown in Fig. 1 to 6, top connection 1 of the present invention and upper exterior tube 2 screwed connections, upper exterior tube 2 is provided with axially extending bore, the eccentric integrated entity 6 that is tightly connected in upper exterior tube 2 lower ends, eccentric integrated entity 6 is provided with the central through hole 6-7 that is communicated with the axially extending bore of upper exterior tube 2.In the central through hole 6-7 of eccentric integrated entity 6, be provided with inlet opening 6-1, upper water-out hole 6-3, lower inlet opening 6-2 and lower weep hole 6-5.Offering axial parallel with central through hole 6-7, upper end at a sidewall of eccentric integrated entity 6 is that uncovered, lower end is blind mouthful eccentric orfice, pair water nozzle blanking plugs 4 of planting in eccentric orfice.Be fixedly installed interior guide cylinder 3 by bolt 5 in upper exterior tube 2, interior guide cylinder 3 is provided with the gathering sill 3-1 that sends into blanking plug 4.
Lower outer pipe 7 and interior connecting leg 8 are tightly connected in eccentric integrated entity 6 lower ends, interior connecting leg 8 is arranged in the inner chamber of lower outer pipe 7, between interior connecting leg 8 and the lower outer pipe 7 annular gap is set, be nested with compound connecting leg 10 in this annular gap, the inner chamber upper end of compound connecting leg 10 is communicated with the lower weep hole 6-5 of eccentric integrated entity 6.
In interior connecting leg 8, be fixedly installed the fairlead 9 identical with common eccentric injection mandrel.
The upper end of central tube 23 is threaded in the lower end of compound connecting leg 10, between central tube 23 tops and the interior connecting leg 8 sealing ring 28 is set.
At compound connecting leg 10 arranged outside cannelure 10-3, in cannelure 10-3, connect well-flushing fluid cylinder 12 by C shape jump ring 11.Long tubular well-flushing valve seat 14 is threaded in well-flushing fluid cylinder 12 lower ends, well-flushing fluid cylinder 12 interior layout piston type flushing valves 13 above well-flushing valve seat 14, well-flushing fluid cylinder 12 lateral walls below piston type flushing valve 13 are offered well-flushing fluid cylinder inlet opening 12-1, the well-flushing fluid cylinder inner chamber of piston type flushing valve 13 tops is communicated with the inner chamber of interior connecting leg 8 by the pilot duct 10-2 that is arranged on the radial hole 8-1 on interior connecting leg 8 sidewalls and be arranged on the compound connecting leg 10, as shown in Figure 5.
In compound connecting leg 10, offer the axially honeycomb duct 10-1 parallel with the axis of compound connecting leg 10, the inner chamber of long tubular well-flushing valve seat 14 is communicated with honeycomb duct 10-1.
The support set 18 that is threaded in the lower end of long tubular well-flushing valve seat 14 is nested with three packing elements 15 by spacer ring 16 compartment of terrains outside the well-flushing valve seat 14 above support set 18.Pressure ring 17 is arranged between the packing element 15 and support set 18 of below.
The outside in support set 18 upper ends connects exterior lock tube 20 by anti-seat pin nail 19, between support set 18 and exterior lock tube 20, sealing ring 29 is set, the inner chamber of the exterior lock tube 20 above sealing ring 29 is communicated with the inner chamber of long tubular well-flushing valve seat 14, offers fluid hole 20-1 at exterior lock tube 20 sidewalls.Tooth 20-2 is colluded in exterior lock tube 20 inwall settings below fluid hole 20-1, arranges jump ring 21 between support set 18 and exterior lock tube 20, and the front portion of jump ring 21 arranges and the corpus unguis 21-1 that colludes tooth 20-2 and cooperate.Set lock dog spacing hole 18-1 at support set 18, offer the oblique groove 23-2 that makes things convenient for lock dog 22 slippages at the lateral wall of central tube 23, little and the inner large lock dog 22 in outer end is placed among the lock dog spacing hole 18-1, the outer end opening of lock dog spacing hole 18-1 is less than the inner diameter of lock dog 22, and oblique groove 23-2 is the cell body greater than lock dog 22 inner areas.When lock dog shifted out oblique groove 23-2, the outer end of lock dog 22 was butted on the back of jump ring 21, and the front portion of jump ring 21 is driven to the inwall of exterior lock tube 20, until the corpus unguis 21-1 of jump ring 21 front portions and the tooth 20-2 that colludes of exterior lock tube 20 are interlocked.
Outside central tube 23, be nested with upper cylinder body 24 by sealing ring, the upper end overhead of upper cylinder body 24 is in the lower end of exterior lock tube 20, at the upper cylinder body 24 interior upper pistons 25 that arrange, upper piston 25 is threaded in central tube 23 lower ends, upper cylinder body 24 inner chambers of upper piston 25 tops are communicated with the inner chamber of central tube 23 by hole 23-3, and the upper cylinder body 24 of upper piston 25 belows is communicated with outside.
Be nested with lower cylinder body 26 in the outside, upper piston 25 lower ends by sealing ring, the upper end overhead of lower cylinder body 26 is in the lower end of upper cylinder body 24, lower contact 27 is set in that lower cylinder body 26 is interior, lower contact 27 upper ends are threaded in the lower end of upper piston 25, lower cylinder body 26 inner chambers of lower contact 27 tops are communicated with the inner chamber of central tube 23 by hole 23-4, and the lower cylinder body 26 of lower contact 27 belows is communicated with outside.
6-4 for be arranged on eccentric integrated entity 6 in the accessory channel that is communicated with of lower diversion culvert 6-6.
6-8 is the accessory channel that is arranged in the eccentric integrated entity 6.
Repeat setting operating principle: upper fluid cylinder 24 when setting, lower fluid cylinder 26 are up under hydraulic action, and anti-seat pin nail 19 is cut off, and moves the 15 distortion packings of compression packing element on the pressure ring 17, moves internal tooth 20-2 on the exterior lock tube 20 and meshes with jump ring 21, prevents the resilience of packing element 15; C shape jump ring 11 pins well-flushing fluid cylinder 12, and this moment, packer was in the packing state.Carry on the central tube 23 during deblocking or wriggle up, the frictional force that produces when packing element 15 and oil well casing is during greater than the coupling mechanism force of C shape jump ring 11, central tube 23 relatively moves with generations such as well-flushing fluid cylinder 12, packing element 15, exterior lock tube 20, support sets 18, when lock dog 22 falls into the oblique groove 23-2 of central tube 23, jump ring 21 loses support, exterior lock tube 20 internal tooth 20-2 separate with jump ring 21, and exterior lock tube 20 is deblocking under the screen resilience effect of packing element 15.Setting again: because packer still is in air-tight state, oil pipe boosts, and upper fluid cylinder 24, lower fluid cylinder 26 are up, and C shape jump ring 11 pins well-flushing fluid cylinders 12; Lock dog 22 oblique groove 23-2 from central tube 23 under the driving of support set 18 is up to former desired location, and continue supporting that jump ring 21 meshes with jump ring 21 with up exterior lock tube 20 internal tooth 20-2 is that packer is setting again.
Embodiment:
Can form the multistage water injection tubing string by oil pipe and a kind of seat sealed type packing water distributor, hydraulic packer and bottom valve of repeating of Duo Tai.
Now take three grades four layers as example: two mouth blanking plugs of the mouth of feigning death are settled in the inclined to one side hole of packing water distributor, tubular column structure is connected in series successively and is consisted of by oil pipe, first group of repetition seat sealed type packing water distributor, oil pipe, hydraulic packer, oil pipe, second group of repetition seat sealed type packing water distributor, oil pipe and bottom valve, by in the working design order lower going-into-well, from oil pipe pressurization, packer set, pull two mouth blanking plugs out, input namely begins normal water filling behind the arrangement water nozzle.
Seperated layer water injection:
When well head comes the central passage of water by inclined to one side 1 integrated entity 6, inject first floor through upper inlet opening 6-1 and upper water-out mouth 6-3; Through lower inlet opening 6-2 and lower diversion culvert 6-6,6-4,6-5,10-1, anti-flushing well weep hole 20-1, inject the second layer; When the central passage of coming water by inclined to one side 2 integrated entities 6, inject the 3rd layer through upper inlet opening 6-1 and upper water-out mouth 6-3; Through lower inlet opening 6-2 and lower diversion culvert 6-6,6-4,6-5,10-1, anti-flushing well weep hole 20-1, inject the 4th layer.When the central passage of inclined to one side 1 integrated entity 6 is blocked, come water to pass through the accessory channel in parallel that around central passage, arranges, normally to third and fourth layer water filling.The water nozzle pulling is with common eccentric injection mandrel.
Packer seat, deblocking:
The feign death two mouth blanking plugs of mouth of arrangement are accompanyed or follow oil pipes pressurization, packer set, pull two mouth blanking plugs out, settle to drop into behind the water nozzle namely to begin normal water filling; Upper lifting pipe post removing seal for packer.
Because of string creep or other reason, packing water distributor can produce deblocking, causes to separate to lose efficacy; This packing water distributor adopts unique structure, and two water nozzle blanking plugs produce certain pressure reduction (oil pipe and oil jacket annular pressure are inconsistent) during water filling, and packer can be again setting.
Claims (3)
1. one kind can be repeated the seat sealed type packing water distributor, comprise the upper exterior tube that is provided with axially extending bore, eccentric integrated entity is tightly connected in the upper exterior tube lower end, described eccentric integrated entity is provided with the central through hole that is communicated with the axially extending bore of upper exterior tube, offering axially parallel with central through hole, upper end at a sidewall of described eccentric integrated entity is that uncovered, lower end is the eccentric orfice of blind mouth, the two water nozzle blanking plugs of plant in described eccentric orfice, be fixedly installed interior guide cylinder in described upper exterior tube, described interior guide cylinder is provided with the gathering sill of sending into described blanking plug; Be tightly connected in eccentric integrated entity lower end lower outer pipe and interior connecting leg, described interior connecting leg is arranged in the lower outer pipe inner chamber, between interior connecting leg and the lower outer pipe annular gap is set; In described interior connecting leg, fairlead is set; Be nested with compound connecting leg in the annular gap between described interior connecting leg and lower outer pipe, the inner chamber of described compound connecting leg upper end is communicated with the eccentric orfice lower end of eccentric integrated entity, it is characterized in that having in the connection of described compound connecting leg lower end repeating setting hydraulic packer.
2. the described seat sealed type packing water distributor that repeats according to claim 1, it is characterized in that described have repeat setting hydraulic packer and comprise central tube, the upper end of described central tube is fixedly connected on the lower end of compound connecting leg, between central tube top and the interior connecting leg sealing ring is set;
Connect the well-flushing fluid cylinder in the compound connecting leg outside by C shape jump ring, arrange the piston type flushing valve in the well-flushing fluid cylinder above the well-flushing valve seat, be fixedly connected with long tubular well-flushing valve seat in the lower end of described well-flushing fluid cylinder, well-flushing fluid cylinder lateral wall below the piston type flushing valve is offered well-flushing fluid cylinder inlet opening, and the well-flushing fluid cylinder inner chamber of described piston type flushing valve top is communicated with interior connecting leg inner chamber;
Offer the axially honeycomb duct 10-1 parallel with compound connecting leg axis in compound connecting leg, the inner chamber of described long tubular well-flushing valve seat is communicated with described honeycomb duct 10-1;
Lower end at long tubular well-flushing valve seat is fixedly connected with support set, and the well-flushing valve seat overcoat above described support set is put packing element;
The outside in the support set upper end connects exterior lock tube by anti-seat pin nail, sealing ring 19-1 is set between support set and exterior lock tube, exterior lock tube inner chamber above described sealing ring is communicated with the inner chamber of long tubular well-flushing valve seat, offer fluid hole at the exterior lock tube sidewall, tooth is colluded in exterior lock tube inwall setting below described fluid hole, arrange jump ring between support set and exterior lock tube, the front portion of described jump ring arranges with described and colludes the corpus unguis that tooth cooperates, and the rear portion of described jump ring arranges the jump ring oscillating control mechanism;
Be nested with cylinder body at the central tube external seal, the upper end overhead of cylinder body arranges piston in the lower end of exterior lock tube in cylinder body, and piston is connected to the central tube lower end, and the inner chamber of cylinder block of described piston top is communicated with the central tube inner chamber, and the cylinder body of piston below is communicated with cylinder body is outside.
3. the described seat sealed type packing water distributor that repeats according to claim 2, it is characterized in that described jump ring oscillating control mechanism comprises the little and inner large lock dog in outer end, the lock dog spacing hole that arranges at support set and the oblique groove of offering in center tube wall, described lock dog is placed in the lock dog spacing hole, described lock dog spacing hole outer end opening is less than the inner diameter of lock dog, described oblique groove is the cell body greater than the inner area of lock dog, when lock dog shifts out oblique groove, the outer end of lock dog is butted on the back of jump ring, the front portion of jump ring is driven to the exterior lock tube inwall, until the corpus unguis of jump ring front portion and the tooth that colludes of exterior lock tube are interlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408006.3A CN102900410B (en) | 2012-10-24 | 2012-10-24 | Repeated seat seal type packing water regulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408006.3A CN102900410B (en) | 2012-10-24 | 2012-10-24 | Repeated seat seal type packing water regulator |
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| CN102900410A true CN102900410A (en) | 2013-01-30 |
| CN102900410B CN102900410B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210408006.3A Active CN102900410B (en) | 2012-10-24 | 2012-10-24 | Repeated seat seal type packing water regulator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141477A (en) * | 2014-07-28 | 2014-11-12 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN106351627A (en) * | 2016-10-09 | 2017-01-25 | 中国石油化工股份有限公司 | Subdivision measurement adjustment water distributor |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN108487885A (en) * | 2018-05-25 | 2018-09-04 | 四川省科学城久利电子有限责任公司 | Double adjusting dropping in and taking off type bias cable control injection well downhole flow regulators |
| CN113107443A (en) * | 2021-04-29 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Eccentric oilfield water distributor |
| CN113494281A (en) * | 2021-08-02 | 2021-10-12 | 中国石油化工股份有限公司 | Adjustable eccentric water distributor for water injection well |
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| CN2861471Y (en) * | 2005-08-09 | 2007-01-24 | 大庆油田有限责任公司 | Diversion double-layer eccentric water distribution packer |
| CN201068779Y (en) * | 2007-05-21 | 2008-06-04 | 中国石油化工股份有限公司 | Eccentric center water-dispensing packer |
| CN201129162Y (en) * | 2007-12-28 | 2008-10-08 | 濮阳市东昊机械电子有限公司 | Packer capable of repeatable seat sealing |
| CN202125272U (en) * | 2011-06-23 | 2012-01-25 | 中国石油天然气股份有限公司 | Small-clamping-distance packer for fine water distribution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2861471Y (en) * | 2005-08-09 | 2007-01-24 | 大庆油田有限责任公司 | Diversion double-layer eccentric water distribution packer |
| CN201068779Y (en) * | 2007-05-21 | 2008-06-04 | 中国石油化工股份有限公司 | Eccentric center water-dispensing packer |
| CN201129162Y (en) * | 2007-12-28 | 2008-10-08 | 濮阳市东昊机械电子有限公司 | Packer capable of repeatable seat sealing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141477A (en) * | 2014-07-28 | 2014-11-12 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN106351627A (en) * | 2016-10-09 | 2017-01-25 | 中国石油化工股份有限公司 | Subdivision measurement adjustment water distributor |
| CN106351627B (en) * | 2016-10-09 | 2021-03-16 | 中国石油化工股份有限公司 | Fine-dividing measuring-adjusting water distributor |
| CN108487885A (en) * | 2018-05-25 | 2018-09-04 | 四川省科学城久利电子有限责任公司 | Double adjusting dropping in and taking off type bias cable control injection well downhole flow regulators |
| CN108487885B (en) * | 2018-05-25 | 2023-12-19 | 四川省科学城久利电子有限责任公司 | Double-regulation casting-fishing type eccentric cable controlled water distributor |
| CN113107443A (en) * | 2021-04-29 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Eccentric oilfield water distributor |
| CN113494281A (en) * | 2021-08-02 | 2021-10-12 | 中国石油化工股份有限公司 | Adjustable eccentric water distributor for water injection well |
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| CN102900410B (en) | 2015-01-07 |
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| C53 | Correction of patent of invention or patent application | ||
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Inventor after: Shi Jianshe Inventor after: Gu Wenbin Inventor after: Li Yike Inventor after: Peng Taixiang Inventor after: Nie Houwen Inventor after: Chen Xiaobin Inventor before: Shi Jianshe Inventor before: Gu Wenbin Inventor before: Peng Taixiang Inventor before: Nie Houwen Inventor before: Chen Xiaobin |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHI JIANSHE GU WENBIN PENG TAIXIANG NIE HOUWEN CHEN XIAOBIN TO: SHI JIANSHE GU WENBIN LI YIKE PENG TAIXIANG NIE HOUWEN CHEN XIAOBIN |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |