CN104790902A - Protection mechanism of rubber sleeve of expansion type packer, rubber sleeve with protection mechanism and packer - Google Patents
Protection mechanism of rubber sleeve of expansion type packer, rubber sleeve with protection mechanism and packer Download PDFInfo
- Publication number
- CN104790902A CN104790902A CN201510160220.5A CN201510160220A CN104790902A CN 104790902 A CN104790902 A CN 104790902A CN 201510160220 A CN201510160220 A CN 201510160220A CN 104790902 A CN104790902 A CN 104790902A
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- Prior art keywords
- bearing ring
- protection mechanism
- packing element
- ring
- outer bearing
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- 238000012856 packing Methods 0.000 claims description 90
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000006049 ring expansion reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a protection mechanism of a rubber sleeve of an expansion type packer. The protection mechanism comprises an inner pressure bearing ring, an outer pressure bearing ring and a pressing ring, and is characterized in that the inner pressure bearing ring is sleeved with the outer pressure bearing ring, and the outer pressure bearing ring is sleeved with the pressing ring; the protection mechanism is divided into a movable end and a fixed end, and at the fixed end of the protection mechanism, the inner pressure bearing ring, the outer pressure bearing ring and the pressing ring are fixedly connected. The protection mechanism has the advantages that the sealing validity period of the expansion type packer can be prolonged, the pressure difference bearing capacity is high, and the protection mechanism can be repeatedly used underground and is free of well blocking.
Description
Technical field
The invention belongs to oil gas field downhole tool, particularly Inflatable type packer rubber sleeve protection mechanism and use its packing element and packer.
Background technology
Current domestic and international inflatable packer used is set with packing element by central tube, the upper and lower two ends of packing element are respectively withheld by a pressure ring, carry on the back cap locking, in the middle part of packing element, internal diameter and central tube external diameter are provided with gap, packing element two ends internal diameter and central tube external diameter closely cooperate, there is sealing performance, in the middle part of central tube and packing element, corresponding position is provided with setting passage, and top connection endoporus is provided with connection box, and lower contact external diameter is provided with connection pin thread.
Inflatable packer operating principle
:enter in Oil/gas Well sleeve pipe under connecting with oil pipe during inflatable packer work, in order to enter under smooth and trip out, maximum outside diameter when inflatable packer is not setting is all less than casing inner diameter.To be lowered in well behind precalculated position, in oil pipe, fluid injection is suppressed, the setting passage of liquid on inflatable packer central tube enters the gap between central tube and packing element, the expansion of flexible packing element will be had, diameter increases, packing element external diameter is closely attached on internal surface of sleeve pipe, and the annular space of casing inner diameter and packer external diameter is separated by packing element, and this is the setting rear object that will reach of inflatable packer.After inflatable packer completes the expectation packing work period, need removing seal for packer, then propose outside well.During deblocking, released by oily overpressure, Inflatable type packer rubber sleeve resilience under natural resiliency effect, is expelled back into central tube inner chamber by liquid between packing element and central tube, and packing element diameter returns to setting front state, and this is deblocking.
Current inflatable packer existing problems: in order to improve the performance of inflatable packer, the measure taked when making cylinder glue at present has three kinds, and the first adds netted nylon wire in packing element inside; It two is add steel wire in packing element inside; It three is add steel band in packing element.When the first and the second packing element bear pressure reduction, have along sealing annular space outwardly flop phenomenon, the larger packing element of pressure reduction outwardly overturns more serious, causes packing element to tear damage, seal failure, and stuck at joint ring in the air, during deblocking can not resilience, Ka Jing; The third glue tube base is honored as a queen, two ends steel band and packing element diameter are synchronously expanded and are fitted with internal surface of sleeve pipe, when bearing means of press seals, packing element is stopped by steel band, eliminates along sealing annular space outwardly flop phenomenon, sealing performance is protected, but because steel band is permanent deformation, solution is honored as a queen that packing element pins down by steel band can not resilience, when dragging packer in sleeve pipe, packing element and steel band and sleeve friction, make packing element damage even Ka Jing.Visible current inflatable packer Problems existing is: sealing period of validity is short, the poor ability of resistance to compression is low, can not repeatedly use in down-hole, Ka Jing.
Summary of the invention
The object of the invention is to overcome above deficiency, a kind of protection mechanism of Inflatable type packer rubber sleeve be provided, Dolichoectasia formula packer sealing period of validity, resistance to compression difference ability be high, can repeatedly use in down-hole, not Ka Jing.
The technical scheme adopted is:
The protection mechanism of Inflatable type packer rubber sleeve, comprises interior bearing ring, outer bearing ring and pressure ring, it is characterized in that: outer bearing ring is set on interior bearing ring, and pressure ring is set on outer bearing ring; Described protection mechanism is divided into, movable end and fixed end, and at the fixed end of protection mechanism, interior bearing ring, outer bearing ring are fixedly connected with pressure ring.
Use the Inflatable type packer rubber sleeve of described protection mechanism; comprise packing element, interior bearing ring, outer bearing ring and pressure ring; it is characterized in that: the shoulder of packing element upper and lower side offers annular groove respectively; be arranged with described protection mechanism respectively in the annular groove of the shoulder of packing element upper and lower side, and described protection mechanism mates with packing element identical.
Use the inflatable packer of described packing element, comprise central tube, the back of the body cap, packing element, interior bearing ring, outer bearing ring and pressure ring, it is characterized in that: outside described central tube, be arranged with packing element, the shoulder of packing element upper and lower side is arranged with interior bearing ring, outer bearing ring, pressure ring respectively, back of the body cap is threaded with central tube, and cap clamping is carried on the back in one end of pressure ring.
Described pressure ring front end can be taper hole, and oblique angle is α; The end horn mouth external diameter of interior bearing ring and outer bearing ring can be the conical surface, and oblique angle is β; Oblique angle β value is equal with oblique angle α value, and internal diameter fillet and packing element coincide, and the value of oblique angle α and oblique angle β is 1 ~ 30 degree.
Described outer bearing ring can offer many outer bearing ring axial slit and it is circumferentially divided into some parts, interior bearing ring can offer many interior bearing ring axial slit and it is circumferentially divided into some parts, and interior bearing ring axial slit and outer bearing ring axial slit stagger mutually.
At the fixed end of protection mechanism, interior bearing ring, outer bearing ring can be fixedly connected with by pin with pressure ring.
Central tube is set with packing element outward, interior bearing ring is set with at packing element upper and lower side shoulder, outer bearing ring, pressure ring, pressure ring endoporus rear end is provided with hanging platform and the central tube corresponding position shaft shoulder mounts, back of the body cap is threaded with central tube, pin pressure ring, pressure ring front end is taper hole, oblique angle is α, interior bearing ring and outer bearing ring are provided with some axial slit and it are circumferentially divided into some parts, interior bearing ring and outer bearing ring axial slit mutually stagger and are sleeved in pressure ring, be located with pin, end horn mouth external diameter is the conical surface, oblique angle β value is equal with α value, internal diameter fillet and packing element coincide.
Operating principle: time not setting, packing element, interior bearing ring, outer bearing ring is retracted state, it is taper annular space between outer bearing ring and pressure ring, oblique angle is α, maximal clearance is h, interior bearing ring and outer bearing ring front speaker mouth external diameter are the conical surface, oblique angle β value is equal with α value, after setting, in packing element expansion promotes, bearing ring and outer bearing ring expansion diameter become large, because interior bearing ring and outer bearing ring have some axial slit, so easily open, rotation α angle and pressure ring taper hole stop after fitting, horn mouth external diameter synchronous rotation β fits with internal surface of sleeve pipe behind angle, fit with the pressure ring front end conical surface, interior bearing ring and outer bearing ring axial slit are pre-large post-small state, because interior bearing ring and outer bearing ring axial slit are sleeved in pressure ring for mutually staggering, within bearing ring and outer bearing ring mutually cover the axial slit of the other side, packing element shoulder is under the horn mouth that interior bearing ring and outer bearing ring are formed is protected, can not outwardly overturn, during deblocking, packing element, interior bearing ring, outer bearing ring is by natural resiliency retraction, external diameter returns to setting front state.
The present invention has following characteristics:
1. interior bearing ring and outer bearing ring are provided with some axial slit, form elastic arm, easily open, easily reclaim during deblocking time setting; 2. interior bearing ring and outer bearing ring axial slit mutually stagger and are sleeved in pressure ring, mutually cover the other side's axial slit, constitute seamless parcel to packing element shoulder, thoroughly solve packing element shoulder outwardly turning problem; 3. interior bearing ring and outer bearing ring are sleeved in taper hole pressure ring, and time setting, rotation angle is definite value, ensure that its deflection is in regime of elastic deformation, thoroughly can spring back to setting front state during deblocking; 4. interior bearing ring and outer bearing ring front speaker mouth external diameter are the conical surface, and oblique angle β value is equal with pressure ring taper hole oblique angle α value, and setting rear horn mouth external diameter and internal surface of sleeve pipe coincide; 5. owing to having as above feature, so sealing period of validity can be extended after using Inflatable type packer rubber sleeve shoulder protection mechanism, can repeatedly use in down-hole, deblocking thoroughly, not Ka Jing.
Accompanying drawing explanation
Fig. 1 shows inflatable packer structure chart.
The A-A sectional drawing of Fig. 2 diagram 1.
The B partial enlarged drawing of Fig. 3 diagram 1.
In figure, 1-central tube; 2-first carries on the back cap; 3-pressure ring; 4-packing element; Bearing ring in 5-; Bearing ring axial slit in 5-1; 6-pin; The outer bearing ring of 7-; The outer bearing ring axial slit of 7-1; 8-taper annular space; The setting passage of 9-; 10-second carries on the back cap.
Illustrate with embodiment below in conjunction with accompanying drawing:
Detailed description of the invention 1:
The protection mechanism of Inflatable type packer rubber sleeve, comprises interior bearing ring 5, outer bearing ring 7 and pressure ring 3, and outer bearing ring 7 is set on interior bearing ring 5, and pressure ring 3 is set on outer bearing ring 7; Described protection mechanism is divided into, movable end and fixed end, and at the fixed end of protection mechanism, interior bearing ring 5, outer bearing ring 7 are fixedly connected with pressure ring 3.
Use the Inflatable type packer rubber sleeve of described protection mechanism; comprise packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3; the shoulder of packing element 4 upper and lower side offers annular groove respectively; be arranged with described protection mechanism respectively in the annular groove of the shoulder of packing element 4 upper and lower side, and described protection mechanism mates with packing element 4 identical.
Use the inflatable packer of described packing element, comprise central tube 1, back of the body cap 2, packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3, central tube 1 outer suit packing element 4, bearing ring 5 in packing element 4 shoulder suit, outer bearing ring 7, pressure ring 3, the endoporus rear end of packing element 4 is provided with hanging platform and the central tube 1 corresponding position shaft shoulder mounts, back of the body cap 2 is threaded with central tube 1, pin pressure ring 3, pressure ring 3 front end is taper hole, oblique angle is α, interior bearing ring 5 and outer bearing ring 7 are provided with some axial slit and it are circumferentially divided into some parts, interior bearing ring 5 does not all overlap with the axial slit of outer bearing ring 7 and mutually staggers, and interior bearing ring 5 is sleeved in pressure ring 3 with outer bearing ring 7, with pin 6 by interior bearing ring 5, outer bearing ring 7 and pressure ring 3 are located, end horn mouth external diameter is the conical surface, oblique angle β value is equal with α value, the value of oblique angle α and oblique angle β is 1 degree, internal diameter fillet and packing element coincide.
Detailed description of the invention 2:
The protection mechanism of Inflatable type packer rubber sleeve, comprises interior bearing ring 5, outer bearing ring 7 and pressure ring 3, and outer bearing ring 7 is set on interior bearing ring 5, and pressure ring 3 is set on outer bearing ring 7; Described protection mechanism is divided into, movable end and fixed end, and at the fixed end of protection mechanism, interior bearing ring 5, outer bearing ring 7 are fixedly connected with pressure ring 3.
Use the Inflatable type packer rubber sleeve of described protection mechanism; comprise packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3; the shoulder of packing element 4 upper and lower side offers annular groove respectively; be arranged with described protection mechanism respectively in the annular groove of the shoulder of packing element 4 upper and lower side, and described protection mechanism mates with packing element 4 identical.
Use the inflatable packer of described packing element, comprise central tube 1, back of the body cap 2, packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3, central tube 1 outer suit packing element 4, bearing ring 5 in packing element 4 shoulder suit, outer bearing ring 7, pressure ring 3, the endoporus rear end of packing element 4 is provided with hanging platform and the central tube 1 corresponding position shaft shoulder mounts, back of the body cap 2 is threaded with central tube 1, pin pressure ring 3, pressure ring 3 front end is taper hole, oblique angle is α, interior bearing ring 5 and outer bearing ring 7 are provided with some axial slit and it are circumferentially divided into some parts, interior bearing ring 5 does not all overlap with the axial slit of outer bearing ring 7 and mutually staggers, and interior bearing ring 5 is sleeved in pressure ring 3 with outer bearing ring 7, with pin 6 by interior bearing ring 5, outer bearing ring 7 and pressure ring 3 are located, end horn mouth external diameter is the conical surface, oblique angle β value is equal with α value, the value of oblique angle α and oblique angle β is 15 degree, internal diameter fillet and packing element coincide.
Detailed description of the invention 3:
The protection mechanism of Inflatable type packer rubber sleeve, comprises interior bearing ring 5, outer bearing ring 7 and pressure ring 3, and outer bearing ring 7 is set on interior bearing ring 5, and pressure ring 3 is set on outer bearing ring 7; Described protection mechanism is divided into, movable end and fixed end, and at the fixed end of protection mechanism, interior bearing ring 5, outer bearing ring 7 are fixedly connected with pressure ring 3.
Use the Inflatable type packer rubber sleeve of described protection mechanism; comprise packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3; the shoulder of packing element 4 upper and lower side offers annular groove respectively; be arranged with described protection mechanism respectively in the annular groove of the shoulder of packing element 4 upper and lower side, and described protection mechanism mates with packing element 4 identical.
Use the inflatable packer of described packing element, comprise central tube 1, back of the body cap 2, packing element 4, interior bearing ring 5, outer bearing ring 7 and pressure ring 3, central tube 1 outer suit packing element 4, bearing ring 5 in packing element 4 shoulder suit, outer bearing ring 7, pressure ring 3, the endoporus rear end of packing element 4 is provided with hanging platform and the central tube 1 corresponding position shaft shoulder mounts, back of the body cap 2 is threaded with central tube 1, pin pressure ring 3, pressure ring 3 front end is taper hole, oblique angle is α, interior bearing ring 5 and outer bearing ring 7 are provided with some axial slit and it are circumferentially divided into some parts, interior bearing ring 5 does not all overlap with the axial slit of outer bearing ring 7 and mutually staggers, and interior bearing ring 5 is sleeved in pressure ring 3 with outer bearing ring 7, with pin 6 by interior bearing ring 5, outer bearing ring 7 and pressure ring 3 are located, end horn mouth external diameter is the conical surface, oblique angle β value is equal with α value, the value of oblique angle α and oblique angle β is 30 degree, internal diameter fillet and packing element coincide.
The course of work: inject highly pressurised liquid to central tube 1 inner chamber, airtight annular space between central tube 1 and packing element 4 is entered through setting passage 9, packing element 4 is expanded and internal surface of sleeve pipe gluing, sealing, in packing element 4 shoulder promotes, bearing ring 5 and outer bearing ring 7 are expanded, fit with pressure ring 3 taper hole, pivot angle α guarantees that its deflection is in elastic range, pivot angle β and α is equal guarantees that front speaker prostomum face external diameter and internal surface of sleeve pipe are fitted, interior bearing ring 5 and outer bearing ring 7 pairs of packing element 4 shoulders form seamless parcel, stop during packing element 4 shoulder pressurized and outwardly overturn, after releasing central tube 1 pressure, outer bearing ring 7, interior bearing ring 5 and the synchronous resilience of packing element 4, liquid between packing element 4 and central tube 1 is flow back to central tube inner chamber through setting passage 9.
Claims (6)
1. the protection mechanism of Inflatable type packer rubber sleeve, comprises interior bearing ring (5), outer bearing ring (7) and pressure ring (3), it is characterized in that: outer bearing ring (7) is set on interior bearing ring (5), and pressure ring (3) is set on outer bearing ring (7); Described protection mechanism is divided into, movable end and fixed end, and at the fixed end of protection mechanism, interior bearing ring (5), outer bearing ring (7) are fixedly connected with pressure ring (3).
2. use the Inflatable type packer rubber sleeve of protection mechanism described in claim 1; comprise packing element (4), interior bearing ring (5), outer bearing ring (7) and pressure ring (3); it is characterized in that: the shoulder of packing element (4) upper and lower side offers annular groove respectively; be arranged with described protection mechanism respectively in the annular groove of the shoulder of packing element (4) upper and lower side, and described protection mechanism mates with packing element (4) identical.
3. use the inflatable packer of packing element described in claim 2, comprise central tube (1), back of the body cap (2), packing element (4), interior bearing ring (5), outer bearing ring (7) and pressure ring (3), it is characterized in that: outside described central tube (1), be arranged with packing element (4), the shoulder of packing element (4) upper and lower side is arranged with interior bearing ring (5), outer bearing ring (7) and pressure ring (3) respectively, back of the body cap (2) is threaded with central tube (1), and cap (2) clamping is carried on the back in one end of pressure ring (3).
4. the protection mechanism of Inflatable type packer rubber sleeve according to claim 1, is characterized in that: described pressure ring (3) front end is taper hole, and oblique angle is α; The end horn mouth external diameter of interior bearing ring (5) and outer bearing ring (7) is the conical surface, and oblique angle is β; Oblique angle β value is equal with oblique angle α value, and internal diameter fillet and packing element coincide, and the value of oblique angle α and oblique angle β is 1 ~ 30 degree.
5. the protection mechanism of Inflatable type packer rubber sleeve according to claim 1; it is characterized in that: described outer bearing ring (7) offers many outer bearing ring axial slit (7-1) and it is circumferentially divided into some parts; interior bearing ring (5) offers many interior bearing ring axial slit (5-1) and it is circumferentially divided into some parts, and interior bearing ring axial slit (5-1) and outer bearing ring axial slit (7-1) are staggered mutually.
6. the protection mechanism of Inflatable type packer rubber sleeve according to claim 1, is characterized in that: at the fixed end of protection mechanism, and interior bearing ring (5), outer bearing ring (7) are fixedly connected with by pin (6) with pressure ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160220.5A CN104790902A (en) | 2015-04-08 | 2015-04-08 | Protection mechanism of rubber sleeve of expansion type packer, rubber sleeve with protection mechanism and packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160220.5A CN104790902A (en) | 2015-04-08 | 2015-04-08 | Protection mechanism of rubber sleeve of expansion type packer, rubber sleeve with protection mechanism and packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790902A true CN104790902A (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510160220.5A Pending CN104790902A (en) | 2015-04-08 | 2015-04-08 | Protection mechanism of rubber sleeve of expansion type packer, rubber sleeve with protection mechanism and packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790902A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145278A (en) * | 2019-04-23 | 2019-08-20 | 中石化石油工程技术服务有限公司 | Bridge plug with packing element component |
| CN111577257A (en) * | 2020-06-19 | 2020-08-25 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN112282690A (en) * | 2020-10-27 | 2021-01-29 | 大庆泰泽机械加工有限公司 | Rubber sleeve shoulder has protection architecture and high temperature and high pressure resistant expanding packer |
| CN113338840A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Oil field downhole packer with strong bearing capacity |
| CN114658386A (en) * | 2022-05-24 | 2022-06-24 | 纬达石油装备有限公司 | Expansion packer and using method thereof |
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| US20030226668A1 (en) * | 2002-06-07 | 2003-12-11 | Zimmerman Patrick J. | Anchoring and sealing system for a downhole tool |
| CN202181876U (en) * | 2011-08-23 | 2012-04-04 | 中国石油天然气股份有限公司 | Drilling type composite bridge plug |
| CN202194615U (en) * | 2011-08-25 | 2012-04-18 | 中国石油天然气股份有限公司 | Protection structure of rubber drum of packer |
| CN103375146A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Outburst prevention device and outburst prevention method for packer sealing mechanism |
| CN203296745U (en) * | 2013-05-30 | 2013-11-20 | 上海优强石油科技有限公司 | Rubber sleeve protection device of packer |
| CN204002689U (en) * | 2014-08-28 | 2014-12-10 | 西安超码复合材料有限公司 | The split type support set of a kind of composite bridge plug |
| CN104213864A (en) * | 2013-05-30 | 2014-12-17 | 上海优强石油科技有限公司 | Packer rubber cylinder protection device |
| CN204591204U (en) * | 2015-04-08 | 2015-08-26 | 阜新市石油工具厂 | The protection mechanism of Inflatable type packer rubber sleeve and use its packing element and packer |
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2015
- 2015-04-08 CN CN201510160220.5A patent/CN104790902A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030226668A1 (en) * | 2002-06-07 | 2003-12-11 | Zimmerman Patrick J. | Anchoring and sealing system for a downhole tool |
| CN202181876U (en) * | 2011-08-23 | 2012-04-04 | 中国石油天然气股份有限公司 | Drilling type composite bridge plug |
| CN202194615U (en) * | 2011-08-25 | 2012-04-18 | 中国石油天然气股份有限公司 | Protection structure of rubber drum of packer |
| CN103375146A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Outburst prevention device and outburst prevention method for packer sealing mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145278A (en) * | 2019-04-23 | 2019-08-20 | 中石化石油工程技术服务有限公司 | Bridge plug with packing element component |
| CN111577257A (en) * | 2020-06-19 | 2020-08-25 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN111577257B (en) * | 2020-06-19 | 2023-03-28 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN112282690A (en) * | 2020-10-27 | 2021-01-29 | 大庆泰泽机械加工有限公司 | Rubber sleeve shoulder has protection architecture and high temperature and high pressure resistant expanding packer |
| CN113338840A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Oil field downhole packer with strong bearing capacity |
| CN114658386A (en) * | 2022-05-24 | 2022-06-24 | 纬达石油装备有限公司 | Expansion packer and using method thereof |
| CN114658386B (en) * | 2022-05-24 | 2022-08-05 | 纬达石油装备有限公司 | Expansion type packer and using method thereof |
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Application publication date: 20150722 |