CN2477816Y - Hydraulic packer - Google Patents
Hydraulic packer Download PDFInfo
- Publication number
- CN2477816Y CN2477816Y CN 01241316 CN01241316U CN2477816Y CN 2477816 Y CN2477816 Y CN 2477816Y CN 01241316 CN01241316 CN 01241316 CN 01241316 U CN01241316 U CN 01241316U CN 2477816 Y CN2477816 Y CN 2477816Y
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- central tube
- endoporus
- cylindrical
- packer
- piston
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Abstract
The utility model discloses a hydraulic production packer comprising a thrust bush, a lower joint, a central pipe, a squeezing bush, a locking device and a slip seat. The utility model is characterized in that the lower end of the thrust bush contacts the upper end of the squeezing bush; the locking part of the locking device is arranged in a ring groove at the upper end of the squeezing bush; the lower end of the slip seat is fixedly connected with an internal hole at the upper part of the lower joint; the lower pipe body of the central pipe contacts an internal hole of the slip seat in a sliding way; a support is fixed on the external circle of the central pipe on the lower side of the slip seat; and an unpacking shearing component is respectively arranged between the slip seat and the lower joint and the central pipe. Compared to the prior art, the utility model has the advantages of a small size, a light weight and convenient use.
Description
The utility model relates to the downhole tool of using in the field of petroleum exploitation, exactly is a kind of packer that surges.
In the oil exploitation process, often packer grappling and seat need be enclosed in the precalculated position of oil well casing, and be used in combination with down-hole switch and to reach that the oil well branch is adopted or the purpose of a certain water layer of shutoff, carry out smoothly to guarantee Petroleum Production.Existing packer mainly contains two kinds, and a kind of is motor-driven packer, and another kind is the packer that surges.Wherein, the functional performance of the packer that surges is more advanced, thereby uses also relatively extensively.This packer mainly by driving mechanism, anchor block sealing mechanism, surge and give up, separate sealing mechanism and each parts of seat envelope uncoupling mechanism are formed.The function of each parts is: driving mechanism is realized grappling and seat envelope function for the anchor block sealing mechanism power is provided; Surging gives up is uncoupling parts that are connected between driving mechanism and the anchor block sealing mechanism, can realized after grappling, the seat envelope function both being separated voluntarily at the anchor block sealing mechanism; The effect of separating sealing mechanism is that to open connecting between anchor block sealing mechanism and the oil well casing be deblocking; Seat envelope uncoupling mechanism is connected in to separate between sealing mechanism and the driving mechanism also can make both separated components voluntarily in grappling, seat envelope process.The make of each parts and mutual connecting relation are: driving mechanism is by the top connection of pipe body shape, and respectively with top connection endoporus, the inside and outside cover of the joining piston of cylindrical, seat seals piston and forms with the joining thrust sleeve in piston lower end; The anchor block sealing mechanism is by the pipe body shape lower contact, the central tube that is fixedly connected with lower contact, be nested with extruded sleeve in the central tube outside, match by central tube and with its cylindrical and to moving the locking device that lock assembly constitutes that ends that forms backstop behind the extruded sleeve, be arranged on extruded sleeve one group of rubber sleeve and anchoring members outside and that distribute from top to bottom and form.Wherein, anchoring members is made up of slip sleeve, slip spider and some slips respectively; Surging gives up by the back-off sub between the cover and the central tube of anchor block sealing mechanism in the piston that is arranged on driving mechanism and be arranged in this piston the piston of giving up in the mantle cavity forms.Give up and high pressure also is set between piston and the central tube cuts off member.Wherein, back-off sub is a stepped shell type member, and its big end is that body, small end are then promptly differentiated pawl by the axial corpus unguis of working hard and constituted, and differentiates the end of pawl and makes inside and outside projection; The piston of giving up is the solid cylinder member that a upper and lower end all is shaped on convex ring body.Give up and connect like this with driving mechanism, anchor block sealing mechanism: the big end endoporus of back-off sub connects with cover lower end in the piston, and small end inserts in the endoporus of central tube upper end, and its inner groove of differentiating in pawl end outer lug and the central tube endoporus matches; The interior endoporus that overlaps of piston upper end convex ring body and piston of giving up seals sliding-contact, the lower end convex ring body then matches with the internal projection of differentiating pawl, when both contact, the resolution pawl expands outward and its end outer lug is fixed with the inner groove of central tube and connects, thereby driving mechanism is connected between the anchor block sealing mechanism, when both separate, the outer lug of differentiating the pawl end then and be in separable state between the inner groove of central tube, thereby connecting between driving mechanism and the anchor block sealing mechanism is unlocked; Separating sealing mechanism is made up of cover in deblocking overcoat and the deblocking.The lower end of deblocking overcoat and above-mentioned extruded sleeve upper end thread connection, lower end can be opened with above-mentioned piston jacket by the seat envelope uncoupling mechanism identical with the above-mentioned structural principle of giving up that is made up of seat sealing joint and described thrust sleeve and connect; The cover lower surface contacts with described extruded sleeve upper surface in the deblocking, and this end cylindrical and deblocking overcoat endoporus are planted and be fixedly connected, and then slides and insert in the interior trepanning of above-mentioned piston in the upper end, realizes that by the low member of cutting off axial location connects between the two.The locking device of above-mentioned anchor block sealing mechanism is by being arranged on the extruded sleeve lower end outside and being nested with ending lock assembly and be arranged on deblocking overcoat lower end and constitute ending the interior round seam that lock assembly forms containing in the central tube outside.Wherein, ending lock assembly is made of one group of voussoir.
The grappling of this packer and seat envelope process are: seat envelope piston is under specified fluid pressure effect, cut off described low pressure earlier and cut off member, make seat envelope uncoupling mechanism open, the deblocking overcoat is separated with piston jacket, thereby make seat envelope piston and thrust sleeve promote described extruded sleeve and drive the deblocking overcoat and the described lock assembly that ends moves down, until finishing grappling and seat envelope by cover in the deblocking; Anchor block is honored as a queen, and driving mechanism needs to separate with the anchor block sealing mechanism, so as by petroleum pipeline promptly to the pipe of packer input pressure oil with driving mechanism and give up and bring on the ground.This process realizes like this: when input oil body pressure continues to increase, so that reach when giving up operating pressure, being arranged on the described high pressure of giving up between piston and the central tube cuts off member and is cut off, the piston of giving up moves down, this piston lower convex ring body and back-off sub are differentiated between the projection of pawl end to break away from, thereby driving mechanism and connecting of anchor block sealing mechanism are unlocked, at this moment, the piston upper end convex ring body of giving up also enters in the draining annular groove that is arranged in the central tube endoporus, make this piston pressure release, and make it to be hung in the central tube by the upper end convex ring body.At this moment, carrying petroleum pipeline on then makes driving mechanism and gives up and brought to ground.
The deblocking process of this packer is: twist the deblocking overcoat that overlaps and be fixedly connected with it in the deblocking by aid, thread connection between the extruded sleeve of deblocking overcoat and anchor block sealing mechanism is unlocked, and interior cover of deblocking and the above-mentioned lock assembly that ends are broken away from, thereby described locking device is unlocked, and then reaches the deblocking purpose.
The subject matter that this packer in use exists is: because unsealing operation is to realize by opening locking device, for this reason, it not only will be provided with the inside and outside cover of the very big deblocking of axial dimension, but also the accessories such as seat envelope uncoupling mechanism that match with it will be set.Therefore, this product certainly exists that appearance and size is big, weight is big, structure is very complicated, manufactures defectives such as difficulty height, and then improves and manufacture, transport and use installation cost.
The purpose of this utility model is for people provide a kind of profile molded dimension little, in light weight, simple in structure, the hydraulic packer of being convenient to make.
The purpose of this utility model is achieved in that it comprises driving mechanism, anchor block sealing mechanism, surges and give up, separate sealing mechanism; Driving mechanism seals piston, thrust sleeve etc. by seat and forms; The anchor block sealing mechanism is cut off member by lower contact central tube, extruded sleeve, locking device, low pressure and the anchoring members that is made of slips, slip sleeve, slip spider respectively etc. is formed; Surging gives up is cut off member and is formed by back-off sub, the piston of giving up, high pressure; Be characterized in that described thrust sleeve lower end directly contacts with the upper end of described extruded sleeve; The lock assembly that ends of described locking device is arranged in the inner groove of extruded sleeve upper end; Described slip spider lower end cylindrical connects with described lower contact top endoporus sealing and fixing, and makes the diameter of bore of the middle part diameter of bore of this lower contact greater than this slip spider; Described central tube bottom body and slip spider endoporus sealing sliding-contact, and on the central tube cylindrical in the outside, slip spider lower end, fixedly install the convex hoop shape base body, keep the gap between this base body cylindrical and the described lower contact middle part endoporus, also between slip spider and lower contact and central tube, fixedly install deblocking and cut off member, constitute described deblocking device thus.
Above-mentioned giving up is provided with like this: the cover cylindrical is fixedly connected in big end endoporus of back-off sub and the described piston, should big end cylindrical with described central tube cylindrical is isometrical and with described extruded sleeve on the endoporus sliding-contact, described low pressure is set between the two cuts off member, the small end of back-off sub is promptly differentiated pawl one end and is inserted in the central lumen, this end end endoporus is made up-small and down-big frustum of a cone hole, forms between this end cylindrical and the central tube endoporus and can open coupling mechanism; The described piston of giving up is made of cock body and cover of wedge, the profile of cock body is the ladder bar shape, the sealing of cover endoporus is slidingly connected in big end cylindrical in its top and the described piston, described high pressure is set between the two cuts off member, its small end cylindrical and the convex ring body endoporus sliding-contact that is arranged in the endoporus of described back-off sub middle part, the cover of wedge that matches with described frustum of a cone hole, both thread connection are set on this small end end cylindrical; Tighten cover of wedge, described to open coupling mechanism locked; Withdraw from cover of wedge, this mechanism is unlocked; On the central tube of the big end downside of described cock body and the upper end root of described thrust sleeve all be shaped on the relief hole of the piston of giving up.
Above-mentioned cock body matches by the pipe body shape valve seat with its aperture, upper end, and both form the valve ball of liquid sealing and form.
Above-mentioned cock body is made of solid cylinder.
The above-mentioned coupling mechanism of opening is respectively by being arranged on the thread segment in the described central tube endoporus and being arranged on described resolution pawl end and constituting with raised thread that described thread segment matches.
The above-mentioned coupling mechanism of opening is respectively by being arranged on the annular groove in the described central tube endoporus and being arranged on described resolution pawl end and constituting with outer convex body that described annular groove matches.
The above-mentioned lock assembly that ends is made of the expanding thread bush, it with described central tube cylindrical on thread segment and the described extruded sleeve upper end inner groove made match the described locking device of formation.
The above-mentioned lock assembly that ends is made of one group of wedge, and it matches the described locking device of formation with described central tube cylindrical and described extruded sleeve upper end inner groove.
Above-mentioned high and low pressure is cut off member and is made of screw.
Above-mentioned deblocking is cut off member and is made of ring body.
After the utility model realization,, thereby of the prior art the seat envelope uncoupling parts that seal inside and outside cover and match with it etc. have been omitted because its changes the form of structure of understanding sealing mechanism.Therefore, it is little, in light weight, simple in structure, easily manufactured that it compared with prior art has a volume, and then can reduce significantly and manufacture, transport and use advantages such as installation cost.
Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.
Fig. 1 is a front view of the present utility model.
Fig. 2 is the top partial enlarged drawing of Fig. 1.
Fig. 3 is the middle part partial enlarged drawing of Fig. 1.
Fig. 4 is the bottom partial enlarged drawing of Fig. 1.
As seen from the figure, the utility model comprises driving mechanism, anchor block sealing mechanism, the reconciliation sealing mechanism of giving up surges.
Drive unit mainly by overlap 5 in top connection 1, piston jacket 2, the piston, seat envelope piston 3, thrust sleeve 4 form.Wherein, the inside and outside cover 5,2 of piston, the upper end connect with the inside and outside round thread of top connection respectively, and between the bonding surface of piston jacket 2 and top connection, sealing ring 24 is set; Seat envelope piston 3 is set between the inside and outside cover of piston, this piston lower end and thrust sleeve 4 upper end thread connection, loosening for preventing that this connection from taking place, also be provided with circumferential dog screw between the two, for keeping liquid sealing between the bonding surface that makes seat envelope piston and the inside and outside cover of piston, also within it, be provided with sealing ring 25 on the cylindrical; In addition, also in piston, put the inlet opening 33 that is provided with driving mechanism.This shows that the make of the driving mechanism that uses in the make of this driving mechanism and the prior art is consistent.
Anchor block sealing mechanism and separate sealing mechanism and form like this: it is provided with central tube 11, is shaped on one section screw thread on the inside and outside circle of this central tube top body respectively, the base body 18 of a convex ring body shape is set, both thread connection on the cylindrical of lower end; Slide on the central tube cylindrical and be nested with an extruded sleeve of forming by extrusion head 9 and the outer tube 10 that connects with its inner hole thread respectively, and on the point of attachment between extrusion head and the outer tube 10, dog screw 23 is set, loosening to prevent that this connection from taking place, between pipe orifice and the central tube cylindrical sealing ring 28 is set outside, makes to form liquid sealing between the two; Be provided with in the inner groove that between extrusion head 9 lower end endoporus and outer tube upper surface, forms and end lock assembly, these parts are made of an expanding thread bush 8 that has an opening, and the described external screw thread on its internal thread and central tube top is matched, constitute locking device thus; On the cylindrical of the top of outer tube 10, slide and be nested with seat big envelope 27,29 and the dottle pin of making by elastomeric material 13 between each big envelope; On the cylindrical of the bottom of outer tube, slide and be nested with slip sleeve 14, and on its jacket wall the fixed installation pin 32, the quantity that the elongated slot of making on quantity and the outer tube 10 bottom tube walls 37 is set of this pin is identical, and makes pin the inner be plugged in this slotted hole both sliding-contacts; Be shaped on a plurality of axial dovetail grooves on the outside portion jacket wall of slip sleeve 14, the bottom land plane of this dovetail groove is made of the low inclined-plane of last relative superiority or inferiority; Slide on the cylindrical of the bottom of central tube 11 and be nested with slip spider 16, both are provided with sealing ring 31 between the bonding surface, make it to form liquid sealing; Make a plurality of " T types " axially dovetail groove in this outside portion, slip spider upper end body, the inner face of this dovetail groove is low inside and high outside inclined-plane, and the bottom surface is the plane, and the quantity of the dovetail groove on making this dovetail groove and being arranged on slip sleeve 14 is identical, and axial location is relative; In slip sleeve 14 dovetail groove relative, plant respectively a slips that matches with it 15, both sliding-contacts are installed with each position of slip spider 16.This slip sleeve 14, slips 15, slip spider 16 constitute the anchoring members of anchor block sealing mechanism; The bottom cylindrical of slip spider 16 connects with the upper end inner hole thread of lower contact 19, both are provided with sealing ring 30 between the contact surface, so that formation liquid sealing, and dog screw is set, prevent that it is loosening, also make the lower contact diameter of bore greater than the diameter of bore of slip spider and and be arranged between the cylindrical of base body 18 of central tube lower end and keep the gap; Fixedly install the expanding ring body 17 that has axially open between slip spider and lower contact and central tube, this ring body constitutes deblocking and cuts off member.Above-mentioned central tube, slip spider, lower contact, deblocking are cut off member, base body matches and constitutes the deblocking device.This shows, this anchor block sealing mechanism and separate sealing mechanism compared with prior art its main distinction be: the first, the lock assembly that ends of locking device is arranged in the inner groove of extruded sleeve upper end, rather than is arranged on extruded sleeve front end outside; The second, because of the needs of deblocking device are set, make the connecting mode between slip spider, lower contact, the central tube also be different from prior art, also increase is provided with deblocking and cuts off member and base body simultaneously.In addition, both are identical.
The set-up mode of giving up: employed the giving up of the utility model also is made up of the back-off sub 7 and the piston of giving up.And its operating principle, the connecting mode between the agent structure form of member and it and driving mechanism, the anchor block sealing mechanism is also basic identical.Now details are as follows in conjunction with the accompanying drawings: the lower end cylindrical thread connection of cover 5 in the big end endoporus of back-off sub 7 and the piston, the cylindrical of this end cylindrical and central tube 11 isometrical and with the endoporus sliding-contact of extruded sleeve upper end, low pressure keeper 21 is set between the two, and this keeper is made of screw; The small end of back-off sub is promptly differentiated pawl one end and is inserted in central tube 11 chambeies, and anti-turn screw 22 is set between the two, differentiates pawl end endoporus and makes up-small and down-big frustum of a cone hole, and cylindrical then and form between the central tube and can open coupling mechanism.In the present embodiment, this mechanism is made of the described internal thread segment that matches with this screw thread that is arranged in that back-off sub differentiates the raised thread on the cylindrical of pawl end and be positioned at the central tube endoporus respectively; The piston of giving up is made up of cock body 6 and cover of wedge 12, the profile of cock body is the ladder bar shape, the endoporus of cover 5 matches in its big end cylindrical and the piston, both slip and touch, and sealing ring 26 is set between both bonding surfaces, make this contact form sealing, high pressure also is set between both contact surfaces cuts off member 20, this member is made of screw; The small end cylindrical of cock body 6 and the endoporus sliding-contact that is arranged on the convex ring body in the back-off sub 7 middle part endoporus, the cover of wedge 12 that the frustum hole of the setting and the small end end of giving up matches on its lower end cylindrical, both thread connection.Tightening cover of wedge makes the resolution pawl of back-off sub and the screw thread pair between the central tube endoporus fastening; Withdraw from cover of wedge, this screw thread pair is unlocked.On the central tube at the big end downside of cock body position and the root of thrust sleeve 4 make the piston relief hole 36,34 of giving up respectively.Cock body is made of two parts in the present embodiment, i.e. pipe body shape valve seat 6 and match with its aperture, upper end, and the valve ball 35 that both can form sealing contact constitutes.
Should illustrate that above-mentioned embodiment of the present utility model is not unique.For example, the first, the cock body of the piston of giving up also can be made of solid cylinder; The second, be arranged on the coupling mechanism opened that back-off sub differentiates between pawl end and the central tube endoporus and also can differentiate outside, pawl lower end and constitute by being arranged on the annular groove in the central tube endoporus and being arranged on outer convex body that this annular groove matches; The 3rd, deblocking is cut off member 17 and also can be made of the pin that is arranged between slip spider and the central tube, and makes the upper end of this pin be lower than the slip spider periphery; The 4th, high and low pressure is cut off member and all can be made of bearing pin; The 5th, the lock assembly that ends that is arranged in the anterior inner groove of extruded sleeve also can be made of one group of wedge commonly used in the prior art.
Use method of operating of the present utility model:
1, the preparation before the anchor block envelope:
Be that the petroleum pipeline lower end connects at first, and be sent to the precalculated position, down-hole by petroleum pipeline with its top connection and an aid; This petroleum pipeline upper end be arranged on ground hydraulic system and connect.
2, grappling and seat envelope.
By hydraulic system to the utility model input hydraulic pressure oil, when oil body pressure reaches specified seat sealing off and covering anchorage level pressure power, low pressure is cut off member 21 and just can be present and be cut off under the thrust of envelope piston and thrust sleeve, this thrust also makes extruded sleeve move down, and make rubber sleeve 27,29 by axial compression, simultaneously slip sleeve is moved down, and then slips is expanded outward, when outside slips, rubber sleeve, expanding, show grappling, seat envelope end-of-job between it and the oil well casing to predetermined extent.At this moment, the draining hole 34 on the thrust sleeve 4 is positioned at outside, piston jacket lower end just.
3, driving mechanism separates with the anchor block sealing mechanism of giving up.
Continue to increase the pressure of input oil body, when making it reach when giving up work needed rated pressure, high pressure is cut off member 20 and is cut off, the piston of giving up moves down, the cover of wedge and the back-off sub that are arranged at the cock body lower end are broken away from, make connecting between back-off sub and the central tube endoporus be in opening, when the upper end of the piston of giving up is displaced downwardly to the bottom that is positioned at the draining hole 35 that piston puts, the pressure oil that acts on the piston of giving up just passes through above-mentioned two draining holes 34,35 enter in the oil well casing, the piston pressure release of giving up shows that connecting between driving mechanism and the anchor block sealing mechanism is unlocked; Carry petroleum pipeline on this moment, then can and give up driving mechanism brings to ground.
4. deblocking.
Down-hole and fixing with central tube upper end is sent in deblocking instrument lower end, carry the deblocking instrument on then, cut off to make on the central tube and move, connect unlatching between the distortion recovery of rubber sleeve, anchoring members and the oil well casing thereby make deblocking cut off member 17; Carry in the continuation deblocking instrument make the base body that is arranged at the central tube lower end and remain in slip spider and lower contact between ring body 17 articulate, and then whole anchor block sealing mechanism is brought to ground.
Claims (10)
1, a kind of packer that surges, it comprises driving mechanism, anchor block sealing mechanism, surges and give up, separate sealing mechanism; Driving mechanism seals piston, thrust sleeve etc. by seat and forms; The anchor block sealing mechanism is cut off member by lower contact, central tube, extruded sleeve, locking device, low pressure and the anchoring members that is made of slips, slip sleeve, slip spider respectively etc. is formed; Surging gives up is cut off member and is formed by back-off sub, the piston of giving up, high pressure; It is characterized in that described thrust sleeve lower end directly contacts with the upper end of described extruded sleeve; The lock assembly that ends of described locking device is arranged in the inner groove of extruded sleeve upper end; Described slip spider lower end cylindrical connects with described lower contact top endoporus sealing and fixing, and makes the diameter of bore of the middle part diameter of bore of this lower contact greater than this slip spider; Described central tube bottom body and slip spider endoporus sealing sliding-contact, and on the central tube cylindrical in the outside, slip spider lower end, fixedly install the convex hoop shape base body, keep the gap between this base body cylindrical and the lower contact middle part endoporus, also between slip spider and lower contact and central tube, fixedly install deblocking and cut off member, constitute described deblocking device thus.
2, a kind of packer that surges according to claim 1, it is characterized in that described giving up is provided with like this: the cover cylindrical is fixedly connected in big end endoporus of back-off sub and the described piston, should big end cylindrical with described central tube cylindrical is isometrical and with described extruded sleeve on the endoporus sliding-contact, described low pressure is set between the two cuts off member, the small end of back-off sub is promptly differentiated pawl one end and is inserted in the central lumen, this end end endoporus is made up-small and down-big frustum of a cone hole, forms between this end cylindrical and the central tube endoporus and can open coupling mechanism; The described piston of giving up is made of cock body and cover of wedge, the profile of cock body is the ladder bar shape, the sealing of cover endoporus is slidingly connected in big end cylindrical in its top and the described piston, described high pressure is set between the two cuts off member, its small end cylindrical and the convex ring body endoporus sliding-contact that is arranged in the endoporus of described back-off sub middle part, the cover of wedge that matches with described frustum of a cone hole, both thread connection are set on this small end end cylindrical; Tighten cover of wedge, described to open coupling mechanism locked; Withdraw from cover of wedge, this mechanism is unlocked; On the central tube of the big end downside of described cock body and the upper end root of described thrust sleeve all be shaped on the relief hole of the piston of giving up.
3, a kind of packer that surges according to claim 2 is characterized in that described cock body matches by the pipe body shape valve seat with its aperture, upper end, and both form the valve ball of liquid sealing and form.
4, a kind of packer that surges according to claim 2 is characterized in that described cock body is made of solid cylinder.
5, a kind of packer that surges according to claim 2 is characterized in that the described coupling mechanism of opening is respectively by being arranged on the thread segment in the described central tube endoporus and being arranged on described resolution pawl end and constituting with raised thread that described thread segment matches.
6, a kind of packer that surges according to claim 2 is characterized in that the described coupling mechanism of opening is respectively by being arranged on the annular groove in the described central tube endoporus and being arranged on described resolution pawl end and constituting with outer convex body that described annular groove matches.
7, according to the described a kind of packer that surges of claim 1 to 6, it is characterized in that the described lock assembly that ends is made of the expanding thread bush, it with described central tube cylindrical on thread segment and the described extruded sleeve upper end inner groove made match the described locking device of formation.
8, according to the described a kind of packer that surges of claim 1 to 6, it is characterized in that the described lock assembly that ends is made of one group of wedge, it matches the described locking device of formation with described central tube cylindrical and described extruded sleeve upper end inner groove.
9, a kind of packer that surges according to claim 8 is characterized in that described high and low pressure cuts off member and be made of screw.
10, a kind of packer that surges according to claim 9 is characterized in that described deblocking cuts off member and be made of ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241316 CN2477816Y (en) | 2001-04-23 | 2001-04-23 | Hydraulic packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241316 CN2477816Y (en) | 2001-04-23 | 2001-04-23 | Hydraulic packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2477816Y true CN2477816Y (en) | 2002-02-20 |
Family
ID=33653338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01241316 Expired - Fee Related CN2477816Y (en) | 2001-04-23 | 2001-04-23 | Hydraulic packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2477816Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761536A (en) * | 2016-12-10 | 2017-05-31 | 牡丹江市金环石化设备有限公司 | A kind of pumpingh well downhole hardware |
| CN107939347A (en) * | 2017-12-29 | 2018-04-20 | 大庆元山油田技术服务有限公司 | A kind of single current draining process pipe string |
| CN111456677A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Hydraulic mechanical packer |
-
2001
- 2001-04-23 CN CN 01241316 patent/CN2477816Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761536A (en) * | 2016-12-10 | 2017-05-31 | 牡丹江市金环石化设备有限公司 | A kind of pumpingh well downhole hardware |
| CN106761536B (en) * | 2016-12-10 | 2018-10-23 | 牡丹江市金环石化设备有限公司 | A kind of pumpingh well downhole hardware |
| CN107939347A (en) * | 2017-12-29 | 2018-04-20 | 大庆元山油田技术服务有限公司 | A kind of single current draining process pipe string |
| CN107939347B (en) * | 2017-12-29 | 2023-04-07 | 大庆元山油田技术服务有限公司 | Single-flow oil drainage process pipe column |
| CN111456677A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Hydraulic mechanical packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |