CN104265230A - Compensation type sealing mechanism of underground packer and bridge plug for oil field - Google Patents
Compensation type sealing mechanism of underground packer and bridge plug for oil field Download PDFInfo
- Publication number
- CN104265230A CN104265230A CN201410353527.2A CN201410353527A CN104265230A CN 104265230 A CN104265230 A CN 104265230A CN 201410353527 A CN201410353527 A CN 201410353527A CN 104265230 A CN104265230 A CN 104265230A
- Authority
- CN
- China
- Prior art keywords
- packing element
- rubber sleeve
- mandrel
- rubber
- sealing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 claims description 70
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect 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
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum 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
-
- 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- 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)
- Sealing Devices (AREA)
Abstract
The invention discloses a compensation type sealing mechanism of an underground packer and a bridge plug for an oil field. The compensation type sealing mechanism comprises a rubber sleeve retainer ring (1), disc springs (2), rubber sleeves (3), a rubber sleeve mandrel (4), spacing rings (5) and a rubber sleeve pressure ring (6), wherein the rubber sleeve retainer ring (1) is in threaded connection with the rubber sleeve mandrel (4); the disc springs (2) are combined to coat the rubber sleeve mandrel (4); one end of the combination of the disc springs (2) is contacted with the end surface of the rubber sleeve retainer ring (1), and the other end of the combination of the disc springs (2) is contacted with the end surface of the rubber sleeve (3) coating the rubber sleeve mandrel (4); the spacing rings (5) coat the rubber sleeve mandrel (4), and are positioned between the rubber sleeves (3); the rubber sleeve pressure ring (6) coats the rubber sleeve mandrel (4); and the combination of the disc springs (2) is mounted between the rubber sleeve pressure ring (6) and the rubber sleeves (3). Disc spring type compensation mechanisms are additionally arranged at the two ends of sealing rubber sleeves; and after the rubber sleeves are permanently compressed, the disc spring type compensation mechanisms compensate the permanent compression of the rubber sleeves so as to guarantee the sealing performance of the rubber sleeves.
Description
Technical field
The invention belongs to technical field of petroleum machinery, relate to a kind of oil field downhole packer and the compensation sealing mechanism of bridging plug.
Background technology
The sealing mechanism of existing oil field downhole packer and bridging plug does not have compensate function, certain is born after pressure reduction at packer and bridging plug, the cartridge of packer and bridging plug is subject to permanent compression, when packer and bridging plug bear another to pressure reduction, because packing element receives permanent compression, the volume of packing element reduces, and packing element just can not seal annular space completely, packing element, when bearing another to pressure reduction, just there will be leakage.
Summary of the invention
In order to overcome defect of the prior art, the invention provides a kind of oil field downhole packer and the compensation sealing mechanism of bridging plug, disk spring type compensation mechanism has been added at cartridge two ends, after packing element receives permanent compression, disk spring type compensation mechanism compensates the permanent compression of packing element, ensures the sealing performance of packing element.Its technical scheme is as follows:
A kind of oil field downhole packer and the compensation sealing mechanism of bridging plug, comprise packing element baffle ring 1, disc spring 2, packing element 3, packing element mandrel 4, spacer ring 5, packing element pressure ring 6, packing element baffle ring 1 is threaded with packing element mandrel 4, disc spring 2 is enclosed within packing element mandrel 4 after combining, disc spring 2 combines one end and packing element baffle ring 1 end contact, the other end and packing element 3 end contact be enclosed within packing element mandrel 4, spacer ring 5 is enclosed within packing element mandrel 4, between packing element 3, packing element pressure ring 6 is enclosed within packing element mandrel 4, disc spring 2 is housed between packing element pressure ring 6 and packing element 3 and combines.
Preferably, when disc spring 2 combines, two disc spring 2 relative combinations, can combinationally use by single dish spring 2, also DVD multidisc spring 2 combination can be in series and combinationally use.
Beneficial effect of the present invention: the present invention has added disk spring type compensation mechanism at cartridge two ends, after packing element receives permanent compression, disk spring type compensation mechanism compensates the permanent compression of packing element, ensures the sealing performance of packing element.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil field of the present invention downhole packer and the compensation sealing mechanism of bridging plug.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in more detail.
With reference to Fig. 1, a kind of oil field downhole packer and the compensation sealing mechanism of bridging plug, comprise packing element baffle ring 1, disc spring 2, packing element 3, packing element mandrel 4, spacer ring 5, packing element pressure ring 6, packing element baffle ring 1 is threaded with packing element mandrel 4, disc spring 2 is enclosed within packing element mandrel 4 after combining, disc spring 2 combines one end and packing element baffle ring 1 end contact, the other end and packing element 3 end contact be enclosed within packing element mandrel 4, spacer ring 5 is enclosed within packing element mandrel 4, between packing element 3, packing element pressure ring 6 is enclosed within packing element mandrel 4, disc spring 2 is housed between packing element pressure ring 6 and packing element 3 and combines.
When disc spring 2 combines, two disc spring 2 relative combinations, can combinationally use by single dish spring 2, also DVD multidisc spring 2 combination can be in series and combinationally use.
Oil field of the present invention downhole packer and the compensation sealing mechanism of bridging plug are in the process of embody rule, compensation sealing mechanism is mainly used on oil field downhole packer and bridging plug, when packer or bridging plug set, packing element baffle ring 1 drives packing element mandrel 4 to move down, packing element pressure ring 6 keeps motionless under packer and the effect of bridging plug anchor mechanism, packing element 3 is close to internal surface of sleeve pipe by compression distending, disc spring 2 combines and is also produced elastic deformation by compression simultaneously, packer and bridging plug set, when packer or bridging plug to be deposited by certain to pressure reduction, packing element 3 moves to the other end, packing element 3 creates permanent contraction distortion, packing element 3 is close to internal surface of sleeve pipe, ensure that the sealing performance of packer or bridging plug, when packer or bridging plug bear another to pressure reduction, packing element 3 is to reverse movement, because packing element 3 has created permanent contraction distortion, now disc spring 2 combination flicks, compensate the permanent contraction distortion of packing element 3, packing element 3 is made to be close to internal surface of sleeve pipe, ensure that packer or bridging plug can not lose sealing performance because of the permanent contraction distortion of sealing mechanism packing element 3.
The above; be only the present invention's preferably detailed description of the invention; protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen within the scope of protection of the present invention.
Claims (1)
1. an oil field downhole packer and the compensation sealing mechanism of bridging plug, it is characterized in that, comprise packing element baffle ring (1), disc spring (2), packing element (3), packing element mandrel (4), spacer ring (5), packing element pressure ring (6), packing element baffle ring (1) is threaded with packing element mandrel (4), be enclosed within packing element mandrel (4) after disc spring (2) combination, disc spring (2) combination one end and packing element baffle ring (1) end contact, the other end and packing element 3 end contact be enclosed within packing element mandrel (4), spacer ring (5) is enclosed within packing element mandrel (4), be positioned between packing element (3), packing element pressure ring (6) is enclosed within packing element mandrel (4), disc spring (2) is housed between packing element pressure ring (6) and packing element (3) combine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353527.2A CN104265230A (en) | 2014-07-17 | 2014-07-17 | Compensation type sealing mechanism of underground packer and bridge plug for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353527.2A CN104265230A (en) | 2014-07-17 | 2014-07-17 | Compensation type sealing mechanism of underground packer and bridge plug for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265230A true CN104265230A (en) | 2015-01-07 |
Family
ID=52156788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410353527.2A Pending CN104265230A (en) | 2014-07-17 | 2014-07-17 | Compensation type sealing mechanism of underground packer and bridge plug for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265230A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605424A (en) * | 2017-10-19 | 2018-01-19 | 中国海洋石油总公司 | From compression high temperature downhole packer |
| CN110735611A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | air-tight seal packer sealing assembly |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU750041A1 (en) * | 1978-05-04 | 1980-07-23 | Саратовский филиал Специального конструкторского бюро Всесоюзного научно-производственного объединения "Союзгазавтоматика" | Packer |
| CN87215084U (en) * | 1987-11-01 | 1988-08-03 | 大庆石油管理局第四采油厂 | Compression type small diameter sealing isolator |
| CN2363048Y (en) * | 1998-12-17 | 2000-02-09 | 中原石油勘探局采油工艺技术研究所 | Gas lift packer |
| CN2584813Y (en) * | 2002-11-07 | 2003-11-05 | 王锡来 | High-pressure resistance packer with long-service life |
| CN2921265Y (en) * | 2006-06-29 | 2007-07-11 | 新疆石油管理局采油工艺研究院 | Bridge packer |
| CN101713281A (en) * | 2008-10-07 | 2010-05-26 | 刘景斌 | self-expansion bonding packer |
-
2014
- 2014-07-17 CN CN201410353527.2A patent/CN104265230A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU750041A1 (en) * | 1978-05-04 | 1980-07-23 | Саратовский филиал Специального конструкторского бюро Всесоюзного научно-производственного объединения "Союзгазавтоматика" | Packer |
| CN87215084U (en) * | 1987-11-01 | 1988-08-03 | 大庆石油管理局第四采油厂 | Compression type small diameter sealing isolator |
| CN2363048Y (en) * | 1998-12-17 | 2000-02-09 | 中原石油勘探局采油工艺技术研究所 | Gas lift packer |
| CN2584813Y (en) * | 2002-11-07 | 2003-11-05 | 王锡来 | High-pressure resistance packer with long-service life |
| CN2921265Y (en) * | 2006-06-29 | 2007-07-11 | 新疆石油管理局采油工艺研究院 | Bridge packer |
| CN101713281A (en) * | 2008-10-07 | 2010-05-26 | 刘景斌 | self-expansion bonding packer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605424A (en) * | 2017-10-19 | 2018-01-19 | 中国海洋石油总公司 | From compression high temperature downhole packer |
| CN110735611A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | air-tight seal packer sealing assembly |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |