CN203097812U - Underground suspended packer - Google Patents
Underground suspended packer Download PDFInfo
- Publication number
- CN203097812U CN203097812U CN 201220665664 CN201220665664U CN203097812U CN 203097812 U CN203097812 U CN 203097812U CN 201220665664 CN201220665664 CN 201220665664 CN 201220665664 U CN201220665664 U CN 201220665664U CN 203097812 U CN203097812 U CN 203097812U
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- slips
- sleeve
- ring
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Abstract
The utility model relates to the technical field of a device for suspending and sealing a bottom tubular column during fracture well-completion practice in an oil and gas field. The utility model relates to an underground suspended packer, which comprises a sealing placing and suspending device, a mandrel, a piston and a lower joint, wherein the outer wall of the top part of the mandrel 1 is fixedly provided with an annular boss; the inner wall of the upper part of the lower joint is provided with an annular second upper mounting alcove; the inner wall of the lower joint below the second upper mounting alcove and the outer wall of the mandrel are fixedly arranged together; and a connecting alcove of which the outer diameter is matched with the inner diameter of the second upper mounting alcove is arranged from the outer wall of the upper part of the piston to the outer wall of the lower end of the piston. The underground suspended packer is reasonable and compact in structure and is convenient to use. By step-by-step pressuring, the piston moves upwards, and effective placing and suspending can be realized by an upper slip and a lower slip; a sealing rubber sleeve swells in a radial direction to realize effective sealing; through suspending pawls on teeth on the outer wall of the mandrel, the permanent sealing of the underground suspended packer and the permanent suspending of a bottom tubular string are guaranteed, and therefore, the effective implementation of the fracture well-completion practice is guaranteed.
Description
Technical field
The utility model relates to oil-gas field fracturing completion packer technology field, is a kind of down-hole suspension type packing device.
Background technology
In oilfield explorating developing process, use fracturing technique to realize the high yield of oil gas field, particularly at the compactness oil gas field etc., utilizing fracturing technique has been to realize that oil gas field improves a kind of indispensable technological means of recovery ratio.At present, the most widely used fracturing technique means are to utilize pitching next portion's packer that binds in ground to reach relevant packer, utilize different bulb diameters to open different pressure break sliding sleeves simultaneously and realize fracturing work.Yet there is the defective that suspension force is more weak and the annular space sealability is relatively poor in the on-the-spot at present top packer that uses, and this defective will directly cause the quality of underground fracture construction, when serious, will make the underground fracture construction to carry out.
Summary of the invention
The utility model provides a kind of down-hole suspension type packing device, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the problem that existing packer suspension force is more weak and the annular space sealability is relatively poor.
The technical solution of the utility model realizes by following measure: a kind of down-hole suspension type packing device, comprise seal receptacle mount put, axle, piston and lower contact; Be fixed with annular boss on the upper end outer wall of axle, be fixed with first sleeve of internal diameter greater than the lower contact internal diameter in the upper end of lower contact, the outside, lower end of axle is fixedly installed togather with the top of lower contact and becomes the piston installation cavity with first sleeve shaped, the lower end of piston is fixed with internal diameter and external diameter all greater than the sliding sleeve of piston inner diameter and external diameter, sliding sleeve is sleeved in the piston installation cavity, between piston and axle and the lower contact spacing is arranged, there is the pressure transmission groove inboard, lower end at sliding sleeve, on axle, have and at least one the radial direction through hole of wearing that indent communicates, the outside, upper end at piston is fixed with boss, be fixed together by shear pin between the boss and first sleeve, at least one and corresponding air vent are arranged respectively on the piston and first sleeve, be fixed with second sleeve in the outside, the upper end of boss, on the axle between second sleeve and the annular boss, be installed with seal receptacle and mount and put.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Above-mentioned seal receptacle mounts to put and can comprise upper slips, lower slips, sealing rubber cover and connecting cylinder; Be set with upper slips on the axle outer wall of annular boss below, the lower inside of upper slips is up-small and down-big taper, the bottom of upper slips is radially distributed with at least one axial upper shed along circumference, be installed with tiltedly cover by last shear pin on the axle outer wall of upper slips below, going up tiltedly, cover is middle part wide upper portion and the narrow taper in bottom, going up tiltedly, the top of cover is sleeved in the bottom of upper slips, go up the upper skeleton that the outside of tiltedly overlapping, bottom is set with shape triangular in shape, in second sleeve, be installed with connecting cylinder, the connecting cylinder outside of second sleeve top is fixed with Ka Tai, the upper end of the lower end of Ka Tai and second sleeve offsets, the taper that the upper inner of lower slips is big up and small down, the top of lower slips is radially distributed with at least one axial under shed along circumference, the lower end of lower slips and the upper end of connecting cylinder offset, be installed with the declivity cover by following shear pin on the axle outer wall of lower slips top, the declivity cover is middle part wide upper portion and the narrow taper in bottom, the bottom of declivity cover is sleeved in the top of lower slips, the upper outside of declivity cover is set with the lower skeleton of shape triangular in shape, on the axle outer wall between upper skeleton and the last lower skeleton, be set with sealing rubber cover, the outside, top and bottom in sealing rubber cover has upper groove and low groove respectively, in upper groove and low groove, be respectively installed with back-up ring and following back-up ring, the bottom hypotenuse of last back-up ring upper outside and upper skeleton offsets, and the outside, bottom of following back-up ring offsets with the top hypotenuse of lower skeleton.
Above-mentioned can have the pawl mounting groove on the lower inner wall of connecting cylinder, be installed with the pawl of crown under inwardly in the pawl mounting groove, is distributed with crown teeth up on the axle outer wall between following shear pin and the pawl upper end.
Above-mentioned upper skeleton can comprise first upper skeleton and first lower skeleton of shape triangular in shape respectively, the upper end of the lower end of first upper skeleton and first lower skeleton meshes together, the upper end of first upper skeleton and the lower surface of last oblique cover offset, and the lower end of first lower skeleton and the upper outside of last back-up ring offset; Lower skeleton comprises second upper skeleton and second lower skeleton of shape triangular in shape respectively, the upper end of the second upper skeleton lower end and second lower skeleton meshes together, the upper end of second upper skeleton offsets with the outside, bottom of following back-up ring, and the upper surface of the lower end of second lower skeleton and declivity cover offsets.
Can be installed with lining between the middle part inwall of above-mentioned sealing rubber cover and the axle outer wall, sealing rubber cover and last back-up ring, lining and following back-up ring are fixedly installed togather by sulfuration, and step is arranged in lower contact, and the bottom of axle is sitting on the step.
In the pawl mounting groove of above-mentioned pawl below the pawl back-up ring can be installed, be installed with spring leaf between pawl back-up ring and the piston.
Above-mentioned below annular boss axle and upper slips between can be installed with the location gasket ring.
Can be installed with sealing ring between the sliding sleeve of above-mentioned radial direction through hole top and the axle, be installed with sealing ring between the sliding sleeve of radial direction through hole top and first sleeve, be installed with sealing ring between axle and the lower contact.
The outside, lower end of above-mentioned axle can be fixedly installed togather by screw thread with the top of lower contact, is installed with connecting cylinder by screw thread in second sleeve, and there are internal thread or external screw thread in the upper end of axle, and there are internal thread or external screw thread in the lower end of lower contact.
The utility model reasonable and compact in structure, easy to use, by suppressing step by step, piston stroking upward, upper slips and lower slips can be realized effectively sitting hanging, and the sealing rubber cover expanded radially realizes effectively sealing, hang on the teeth on the axle outer wall by pawl, guaranteed that permanent seal of the present utility model reaches the permanent suspension to the lower tube string, thereby guaranteed effective enforcement of pressure break completion construction.
Description of drawings
Accompanying drawing 1 is looked the half section structural representation for the first half master of the utility model most preferred embodiment.
Accompanying drawing 2 is looked the half section structural representation for the latter half master of the utility model most preferred embodiment.
Coding in the accompanying drawing is respectively: 1 is axle, and 2 is annular boss, and 3 is upper slips, and 4 is first sleeve, 5 are upper shed, and 6 is last shear pin, and 7 is last oblique cover, and 8 is the piston installation cavity, 9 is second sleeve, and 10 is sealing rubber cover, and 11 is upper groove, 12 is low groove, and 13 is last back-up ring, and 14 are following shear pin, 15 is the declivity cover, and 16 is connecting cylinder, and 17 are following back-up ring, 18 is Ka Tai, and 19 is lower slips, and 20 is sliding sleeve, 21 is under shed, and 22 are the pressure transmission groove, and 23 is piston, 24 are lower contact, and 25 is lining, and 26 is the pawl mounting groove, 27 is pawl, and 28 is the pawl back-up ring, and 29 is spring leaf, 30 is sealing ring, and 31 is shear pin, and 32 is radial direction through hole, 33 is first upper skeleton, and 34 is first lower skeleton, and 35 is second upper skeleton, 36 is second lower skeleton, and 37 is boss, and 38 is step.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description 1 is described, as: the position relation of forward and backward, upper and lower, left and right etc. is what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
Shown in accompanying drawing 1,2, this down-hole suspension type packing device comprise seal receptacle mount put, axle 1, piston 23 and lower contact 24; Be fixed with annular boss 2 on the upper end outer wall of axle 1, be fixed with first sleeve 4 of internal diameter greater than the lower contact internal diameter in the upper end of lower contact 24, the outside, lower end of axle 1 is fixedly installed togather with the top of lower contact 24 and forms piston installation cavity 8 with first sleeve 4, the lower end of piston 23 is fixed with internal diameter and external diameter all greater than the sliding sleeve 20 of piston 23 internal diameters and external diameter, sliding sleeve 20 is sleeved in the piston installation cavity 8, between piston 23 and axle 1 and the lower contact 24 spacing is arranged, there is pressure transmission groove 22 inboard, lower end at sliding sleeve 20, on axle 1, have and at least one the radial direction through hole 32 of wearing that indent 22 communicates, the outside, upper end at piston 23 is fixed with boss 37, be fixed together by shear pin 31 between the boss 37 and first sleeve 4, at least one and corresponding air vent are arranged respectively on the piston 23 and first sleeve 4, be fixed with second sleeve 9 in the outside, the upper end of boss 37, on the axle 1 between second sleeve 9 and the annular boss 2, be installed with seal receptacle and mount and put.Form outer hydraulic cavities between first sleeve 4 and the piston 23, hydraulic cavities in forming between axle 1 and the piston 23, in piston 23 up processes, air vent on the piston 23 and first sleeve 4 and outer hydraulic cavities and the row pressure in time of interior hydraulic cavities guarantee the up smoothly of piston 23.
Can according to actual needs above-mentioned down-hole suspension type packing device be made further optimization and/or improvements:
Shown in accompanying drawing 1,2, seal receptacle mounts to put and comprises upper slips 3, lower slips 19, sealing rubber cover 10 and connecting cylinder 16; Be set with upper slips 3 on axle 1 outer wall of annular boss 2 belows, the lower inside of upper slips 3 is up-small and down-big taper, the bottom of upper slips 3 is radially distributed with at least one axial upper shed 5 along circumference, be installed with tiltedly cover 7 by last shear pin 6 on axle 1 outer wall of upper slips 3 belows, going up tiltedly, cover 7 is middle part wide upper portion and the narrow taper in bottom, going up tiltedly, the top of cover 7 is sleeved in the bottom of upper slips 3, the outside, bottom of going up oblique cover 7 is set with the upper skeleton of shape triangular in shape, in second sleeve 9, be installed with connecting cylinder 16, connecting cylinder 16 outsides of second sleeve, 9 tops are fixed with card platform 18, the lower end of card platform 18 and the upper end of second sleeve 9 offset, the taper that the upper inner of lower slips 19 is big up and small down, the top of lower slips 19 is radially distributed with at least one axial under shed 21 along circumference, the upper end of the lower end of lower slips 19 and connecting cylinder 16 offsets, be installed with declivity cover 15 by following shear pin 14 on axle 1 outer wall of lower slips 19 tops, declivity cover 15 is middle part wide upper portion and the narrow taper in bottom, the bottom of declivity cover 15 is sleeved in the top of lower slips 19, the upper outside of declivity cover 15 is set with the lower skeleton of shape triangular in shape, on axle 1 outer wall between upper skeleton and the last lower skeleton, be set with sealing rubber cover 10, the outside, top and bottom in sealing rubber cover 10 has upper groove 11 and low groove 12 respectively, in upper groove 11 and low groove 12, be respectively installed with back-up ring 13 and following back-up ring 17, the bottom hypotenuse of last back-up ring 13 upper outside and upper skeleton offsets, and the outside, bottom of following back-up ring 17 offsets with the top hypotenuse of lower skeleton.The hypotenuse of upper skeleton bottom and last back-up ring 13 upper outside offset, the hypotenuse on lower skeleton top offsets with the outside, following back-up ring 17 bottoms, guarantee in suppressing process, mechanical compliance the inclined-plane and is transmitted, thereby guarantee that sealing rubber cover 10 can expand smoothly, and the hypotenuse on the hypotenuse of upper skeleton bottom and lower skeleton top can carry out screens to sealing rubber cover 10 in the process that sealing rubber cover 10 expands, prevent that sealing rubber cover 10 from coming off, thereby socket is effectively sealed; Upper shed 5 and under shed 21 can guarantee that upper slips 3 and lower slips 19 open seat smoothly and hang.
Shown in accompanying drawing 1,2, pawl mounting groove 26 is arranged on the lower inner wall of connecting cylinder 16, in pawl mounting groove 26, be installed with the pawl 27 of crown under inwardly, be distributed with crown teeth up on axle 1 outer wall between following shear pin 14 and pawl 27 upper ends.After suppressing, pawl 27 is simultaneously up under the up effect of piston 23, behind upper slips 3 and lower slips 19 seat extensions and sealing rubber cover 10 sealing sockets, piston 23 is up to certain position, pawl 27 can hang on the teeth on axle 1 outer wall, like this, suppress stop after, downward moving can not take place in piston 23, guaranteed that the utility model is to the positiver sealing of socket inside with to the reliable suspension of lower tube string.
Shown in accompanying drawing 1,2, upper skeleton comprises first upper skeleton 33 and first lower skeleton 34 of shape triangular in shape respectively, the upper end of the lower end of first upper skeleton 33 and first lower skeleton 34 meshes together, the lower surface of the upper end of first upper skeleton 33 and last oblique cover 7 offsets, and the upper outside of the lower end of first lower skeleton 34 and last back-up ring 13 offsets; Lower skeleton comprises second upper skeleton 35 and second lower skeleton 36 of shape triangular in shape respectively, the upper end of second upper skeleton, 35 lower ends and second lower skeleton 36 meshes together, the upper end of second upper skeleton 35 offsets with the outside, bottom of following back-up ring 17, and the upper surface of the lower end of second lower skeleton 36 and declivity cover 15 offsets.Upper skeleton comprises first upper skeleton 33 and first lower skeleton 34, lower skeleton comprises second upper skeleton 35 and second lower skeleton 36, in the process that sealing rubber cover 10 expands, this knockdown upper skeleton and lower skeleton can better fit sealing rubber cover 10 expand smoothly along with the expansion of sealing rubber cover 10 is protruding simultaneously.
Shown in accompanying drawing 1,2, as required, be installed with lining 25 between the middle part inwall of sealing rubber cover 10 and axle 1 outer wall, sealing rubber cover 10 and last back-up ring 13, lining 25 and following back-up ring 17 are fixedly installed togather by sulfuration, step 38 is arranged in lower contact 24, and the bottom of axle 1 is sitting on the step 38.
Shown in accompanying drawing 1,2, in the pawl mounting groove 26 of pawl 27 belows pawl back-up ring 28 is installed, be installed with spring leaf 29 between pawl back-up ring 28 and the piston 23.When pawl 27 along with piston 23 up processes in, spring leaf 29 up pushes away pawl 27 by pawl back-up ring 28, guarantees that pawl 27 can effectively hang on the teeth on axle 1 outer wall smoothly.
Shown in accompanying drawing 1,2, between axle below the annular boss 21 and upper slips 3, be installed with the location gasket ring.
Shown in accompanying drawing 1,2, be installed with sealing ring 30 between the sliding sleeve 20 of radial direction through hole 32 tops and the axle 1, and formation movable sealing, in the up process of piston 23, guaranteed the sealing between sliding sleeve and the axle 1, be installed with sealing ring 30 between the sliding sleeve 20 of radial direction through hole 32 tops and first sleeve 4, and formation movable sealing, in the up process of piston 23, guaranteed the sealing between the sliding sleeve 20 and first sleeve 4, be installed with sealing ring 30 between axle 1 and the lower contact 24.
Shown in accompanying drawing 1,2, the outside, lower end of axle 1 is fixedly installed togather by screw thread with the top of lower contact 24, be installed with connecting cylinder 16 by screw thread in second sleeve 9, there are internal thread or external screw thread in the upper end of axle 1, and there are internal thread or external screw thread in the lower end of lower contact 24.Be threaded and make things convenient for installation and removal between each parts.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: during use, the upper end of axle 1 connects oil pipe or drilling rod, and lower contact 24 lower ends connect pressure break completion tubular string; When pressure break completion tubular string behind the precalculated position, the pitching operation is carried out on ground, after ball sits on the bottom ball seat, ground is proceeded to suppress, high-pressure fluid enters in the pressure transmission groove 22 by radial direction through hole 32, piston 23 is up under the effect of high-pressure fluid, because piston 23 is up, shear pin 31 is cut off, pump-in pressure is proceeded on ground, it is up that piston 23 will promote lower slips 19 with connecting cylinder 16, in the up process, lower slips 19 radially struts to outer sleeve, pump-in pressure is proceeded on ground, following shear pin 14 will be cut off, and declivity cover 15 will be up under the effect of thrust, in up process, last shear pin 6 is cut off, go up that tiltedly cover 7 is up vertically, because the continuous injection of hydraulic coupling, upper slips 3 radially struts to the outer layer sleeve wall last tiltedly overlapping under 7 the effect, simultaneously, along with the continuation of hydraulic coupling is injected, under the effect of declivity cover 15, sealing rubber cover 10 will radially be expanded to the outer layer sleeve wall, thereby realize effective sealing to annular space, so far, upper slips 3 and lower slips 19 are also finished to sit and are hung operation, thereby have guaranteed the effective suspension to bottom pressure break pipe string; Simultaneously, under the effect of pawl 27, piston 23 can not move down, and therefore, has guaranteed that positiver sealing of the present utility model reaches the reliable suspension to the lower tube string.
Claims (10)
1. down-hole suspension type packing device, it is characterized in that seal receptacle mount put, axle, piston and lower contact; Be fixed with annular boss on the upper end outer wall of axle, be fixed with first sleeve of internal diameter greater than the lower contact internal diameter in the upper end of lower contact, the outside, lower end of axle is fixedly installed togather with the top of lower contact and becomes the piston installation cavity with first sleeve shaped, the lower end of piston is fixed with internal diameter and external diameter all greater than the sliding sleeve of piston inner diameter and external diameter, sliding sleeve is sleeved in the piston installation cavity, between piston and axle and the lower contact spacing is arranged, there is the pressure transmission groove inboard, lower end at sliding sleeve, on axle, have and at least one the radial direction through hole of wearing that indent communicates, the outside, upper end at piston is fixed with boss, be fixed together by shear pin between the boss and first sleeve, at least one and corresponding air vent are arranged respectively on the piston and first sleeve, be fixed with second sleeve in the outside, the upper end of boss, on the axle between second sleeve and the annular boss, be installed with seal receptacle and mount and put.
2. down-hole according to claim 1 suspension type packing device is characterized in that seal receptacle mounts to put and comprises upper slips, lower slips, sealing rubber cover and connecting cylinder; Be set with upper slips on the axle outer wall of annular boss below, the lower inside of upper slips is up-small and down-big taper, the bottom of upper slips is radially distributed with at least one axial upper shed along circumference, be installed with tiltedly cover by last shear pin on the axle outer wall of upper slips below, going up tiltedly, cover is middle part wide upper portion and the narrow taper in bottom, going up tiltedly, the top of cover is sleeved in the bottom of upper slips, go up the upper skeleton that the outside of tiltedly overlapping, bottom is set with shape triangular in shape, in second sleeve, be installed with connecting cylinder, the connecting cylinder outside of second sleeve top is fixed with Ka Tai, the upper end of the lower end of Ka Tai and second sleeve offsets, the taper that the upper inner of lower slips is big up and small down, the top of lower slips is radially distributed with at least one axial under shed along circumference, the lower end of lower slips and the upper end of connecting cylinder offset, be installed with the declivity cover by following shear pin on the axle outer wall of lower slips top, the declivity cover is middle part wide upper portion and the narrow taper in bottom, the bottom of declivity cover is sleeved in the top of lower slips, the upper outside of declivity cover is set with the lower skeleton of shape triangular in shape, on the axle outer wall between upper skeleton and the last lower skeleton, be set with sealing rubber cover, the outside, top and bottom in sealing rubber cover has upper groove and low groove respectively, in upper groove and low groove, be respectively installed with back-up ring and following back-up ring, the bottom hypotenuse of last back-up ring upper outside and upper skeleton offsets, and the outside, bottom of following back-up ring offsets with the top hypotenuse of lower skeleton.
3. down-hole according to claim 2 suspension type packing device, it is characterized in that the pawl mounting groove is arranged on the lower inner wall of connecting cylinder, in the pawl mounting groove, be installed with the pawl of crown under inwardly, be distributed with crown teeth up on the axle outer wall between following shear pin and the pawl upper end.
4. according to claim 2 or 3 described down-hole suspension type packing devices, it is characterized in that upper skeleton comprises first upper skeleton and first lower skeleton of shape triangular in shape respectively, the upper end of the lower end of first upper skeleton and first lower skeleton meshes together, the upper end of first upper skeleton and the lower surface of last oblique cover offset, and the lower end of first lower skeleton and the upper outside of last back-up ring offset; Lower skeleton comprises second upper skeleton and second lower skeleton of shape triangular in shape respectively, the upper end of the second upper skeleton lower end and second lower skeleton meshes together, the upper end of second upper skeleton offsets with the outside, bottom of following back-up ring, and the upper surface of the lower end of second lower skeleton and declivity cover offsets.
5. down-hole according to claim 4 suspension type packing device, it is characterized in that being installed with lining between the middle part inwall of sealing rubber cover and the axle outer wall, sealing rubber cover and last back-up ring, lining and following back-up ring are fixedly installed togather by sulfuration, step is arranged in lower contact, and the bottom of axle is sitting on the step.
6. down-hole according to claim 5 suspension type packing device is characterized in that in the pawl mounting groove of pawl below the pawl back-up ring being installed, and is installed with spring leaf between pawl back-up ring and the piston.
7. down-hole according to claim 1 and 2 suspension type packing device is characterized in that being installed with the location gasket ring between axle below the annular boss and upper slips.
8. down-hole according to claim 6 suspension type packing device is characterized in that being installed with the location gasket ring between axle below the annular boss and upper slips.
9. down-hole according to claim 8 suspension type packing device, it is characterized in that being installed with sealing ring between the sliding sleeve of radial direction through hole top and the axle, be installed with sealing ring between the sliding sleeve of radial direction through hole top and first sleeve, be installed with sealing ring between axle and the lower contact.
10. down-hole according to claim 9 suspension type packing device, it is characterized in that the outside, lower end of axle and the top of lower contact are fixedly installed togather by screw thread, in second sleeve, be installed with connecting cylinder by screw thread, there are internal thread or external screw thread in the upper end of axle, and there are internal thread or external screw thread in the lower end of lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665664 CN203097812U (en) | 2012-12-06 | 2012-12-06 | Underground suspended packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665664 CN203097812U (en) | 2012-12-06 | 2012-12-06 | Underground suspended packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203097812U true CN203097812U (en) | 2013-07-31 |
Family
ID=48849221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220665664 Expired - Fee Related CN203097812U (en) | 2012-12-06 | 2012-12-06 | Underground suspended packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203097812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806862A (en) * | 2014-02-10 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Reliable suspension packer |
| CN105257240A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic setting packer for speed tubular column |
-
2012
- 2012-12-06 CN CN 201220665664 patent/CN203097812U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806862A (en) * | 2014-02-10 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Reliable suspension packer |
| CN103806862B (en) * | 2014-02-10 | 2016-08-17 | 中国石油集团西部钻探工程有限公司 | reliable hanging packer |
| CN105257240A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic setting packer for speed tubular column |
| CN105257240B (en) * | 2015-10-26 | 2018-03-27 | 中国石油集团西部钻探工程有限公司 | Speed column hydraulic setting packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20201206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |