CN202970610U - Packer rubber sleeve for downhole casing of oil and gas well - Google Patents
Packer rubber sleeve for downhole casing of oil and gas well Download PDFInfo
- Publication number
- CN202970610U CN202970610U CN 201220692010 CN201220692010U CN202970610U CN 202970610 U CN202970610 U CN 202970610U CN 201220692010 CN201220692010 CN 201220692010 CN 201220692010 U CN201220692010 U CN 201220692010U CN 202970610 U CN202970610 U CN 202970610U
- Authority
- CN
- China
- Prior art keywords
- packing element
- element body
- head end
- oil
- end packing
- 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.)
- Expired - Lifetime
Links
- 238000012856 packing Methods 0.000 claims abstract description 142
- 239000007789 gas Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses an oil gas well is sleeve pipe packer packing element in pit, including the packing element body, the packing element body includes head end packing element body, middle part packing element body and terminal packing element body, and head end packing element body, middle part packing element body and terminal packing element body are integral type structure, and the hardness of head end packing element body and terminal packing element body is higher than middle part packing element body. The utility model discloses can improve packer pressure differential and temperature bearing capacity, can bear 105MPa operating pressure differential and 177 ℃ downhole temperature.
Description
Technical field
The utility model relates to a kind of Oil/gas Well down-hole casing packing element, is applied on petroleum industry Oil/gas Well packer, bears the seal pressure differential of 105MPa under the temperature condition of 20 ℃ ~ 177 ℃.
Background technology
Along with deepening continuously of China's oil, natural gas exploration and development carried out, the pay zone depth of exploration and development Oil/gas Well, pressure, temperature also constantly raise, the pressure of the oil test operation such as acidification of oil gas well, pressure break also improves constantly thereupon, has higher requirement for packer temperature and pressure reduction ability to bear.
At present, the fewer companies such as external Schlumberger company and Halliburton Company have the packing element that 177 ℃ of seal pressure differential 105MPa of heatproof are arranged, but can't buy; The high workload pressure reduction of domestic packer is 150 ℃ of 70MPa, operating temperatures, can not satisfy the needs of HTHP Oil/gas Well operation, and the packer operting differential pressure is on the low side becomes HTHP Oil/gas Well oil test operation major technique bottleneck.Packing element is the critical component of packer sealing, and the parts of packer except packing element can arrive development heatproof 177 ℃ of seal pressure differential 105MPa, the pressure reduction of packing element and temperature ability to bear deficiency limited packer integral body pressure reduction and temperature ability to bear.For head it off, China Patent No. " CN201020638823.4 " discloses a kind of sealing barrel for compression type packers for oil-gas fields, open day is on 06 22nd, 2011, comprise the packing element that uses on the packer inner core be used to being enclosed within, described packing element inner sleeve is provided with the pressure-bearing arbor, and the axial seal of packer inner core is set on the pressure-bearing arbor, during use, the backward expanded radially of packing element pressurized is close to the Oil/gas Well outer tube after its external surface expands and is also formed axial seal, satisfies the job requirement of packer.After the compression certain distance, the pressure-bearing arbor plays supporting role, bears the pressure that continues increase, avoids the deflection of packing element to continue increase and be damaged, and the bearing capacity of sealing drum is significantly promoted.
But in actual applications, packing element in this patent can not reach 177 ℃ of seal pressure differential 105MPa of heatproof, mainly owing to having increased axial seal that the packer inner core is set on pressure-bearing arbor, pressure-bearing arbor etc., the parts and the globality between packing element that increase are poorer, the more difficult 177 ℃ of seal pressure differential 105MPa of heatproof that reach of the sealing between each parts.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that pipe packing element of the prior art exists, a kind of Oil/gas Well down-hole casing packing element is provided, the utility model can improve packer pressure reduction and temperature ability to bear, can bear 105MPa operting differential pressure and 177 ℃ of downhole temperatures.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of Oil/gas Well down-hole casing packing element, comprise the packing element body, it is characterized in that: described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body.
Described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space.
Be provided with metallic supports in described head end packing element body and end packing element body.
Described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork.
Employing the utility model has the advantage of:
One, in the utility model, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body, two ends packing element body hardness is high make packing element present in the middle of soft both sides hard, this structure provides good stress during for the packing element distending, ensure the packing element sealing effectiveness, can bear 105MPa operting differential pressure and 177 ℃ of downhole temperatures.
Two, in the utility model, described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space, deformation space makes more easily sealing between the packing element body, and sealing effectiveness is better.
Three, in the utility model, be provided with metallic supports in described head end packing element body and end packing element body, increased packing element intensity and pressure reduction ability to bear.
Four, in the utility model, described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork, and metallic supports can be extruded to prevent packing element at the two ends of packing element formation dividing plate after the packing element distending.
Five, the utility model is applicable to internal diameter 108mm ~ 170mm sleeve pipe, and packing element relies on the compression distending, and the annular space between packing tubing string and sleeve pipe can bear the seal pressure differential of 105MPa, thereby protect sleeve pipe under the temperature condition of 20 ℃ ~ 177 ℃.
Six, the utility model solves the key technical problem that improves packer pressure reduction and temperature ability to bear, has been applied to test packer and has obtained good result, can be applicable on other casing packer, is with a wide range of applications.
Description of drawings
Fig. 1 is the utility model structural representation
Be labeled as in figure: 1, head end packing element body, 2, middle part packing element body, 3, end packing element body, 4, metallic supports, 5, deformation space.
The specific embodiment
A kind of Oil/gas Well down-hole casing packing element, comprise the packing element body, described packing element body comprises head end packing element body 1, middle part packing element body 2 and end packing element body 3, head end packing element body 1, middle part packing element body 2 and end packing element body are connected to connect and are integral structure, and the hardness of head end packing element body 1 and end packing element body 3 is higher than middle part packing element body 2.
Preferred embodiment of the present utility model is, described packing element body is three stage structure, comprise head end packing element body 1, end packing element body 3 and a middle part packing element body 2, and the junction of head end packing element body 1 and end packing element body 3 and middle part packing element body 2 is provided with deformation space 5.Three stage structure is best, but is not limited to three stage structure.
Another preferred embodiment of the present utility model is to be provided with metallic supports 4 in described head end packing element body 1 and end packing element body 3.
Further, described metallic supports 4 is arranged on the contact position of head end packing element body 1 and end packing element body 3 and packer metalwork.
As shown in Figure 1, the utility model is combined by each packing element body of two ends and middle part packing element body 2 three block assemblies, is added with metallic supports 4 in the packing element assembly of two ends.
Packing element body described in the utility model can adopt the existing encapsulant that is used for packing element to make, two ends packing element body hardness is high make packing element present in the middle of soft both sides hard, good stress is provided during for the packing element distending, ensure the packing element sealing effectiveness.
Claims (4)
1. Oil/gas Well down-hole casing packing element, comprise the packing element body, it is characterized in that: described packing element body comprises head end packing element body (1), middle part packing element body (2) and end packing element body (3), head end packing element body (1), middle part packing element body (2) and end packing element body (3) are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body.
2. Oil/gas Well down-hole casing packing element according to claim 1, it is characterized in that: described packing element body is three stage structure, comprise head end packing element body (1), end packing element body (3) and a middle part packing element body (2), and the junction of head end packing element body (1) and end packing element body (3) and middle part packing element body (2) is provided with deformation space (5).
3. Oil/gas Well down-hole casing packing element according to claim 2, is characterized in that: be provided with metallic supports (4) in described head end packing element body (1) and end packing element body (3).
4. Oil/gas Well down-hole casing packing element according to claim 3 is characterized in that: described metallic supports (4) is arranged on the contact position of head end packing element body (1) and end packing element body (3) and packer metalwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692010 CN202970610U (en) | 2012-12-14 | 2012-12-14 | Packer rubber sleeve for downhole casing of oil and gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692010 CN202970610U (en) | 2012-12-14 | 2012-12-14 | Packer rubber sleeve for downhole casing of oil and gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970610U true CN202970610U (en) | 2013-06-05 |
Family
ID=48511697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220692010 Expired - Lifetime CN202970610U (en) | 2012-12-14 | 2012-12-14 | Packer rubber sleeve for downhole casing of oil and gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970610U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389546A (en) * | 2014-11-26 | 2015-03-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compressed packer rubber barrel with spacer ring combined spring shoulder pad |
| CN106150426A (en) * | 2015-04-13 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of downhole packer high-temperature sealing device and method |
| WO2017198121A1 (en) * | 2016-05-20 | 2017-11-23 | 天鼎联创密封技术（北京）有限公司 | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug |
-
2012
- 2012-12-14 CN CN 201220692010 patent/CN202970610U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389546A (en) * | 2014-11-26 | 2015-03-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compressed packer rubber barrel with spacer ring combined spring shoulder pad |
| CN106150426A (en) * | 2015-04-13 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of downhole packer high-temperature sealing device and method |
| CN106150426B (en) * | 2015-04-13 | 2019-12-17 | 中国石油化工股份有限公司 | high-temperature sealing device and method for underground packer |
| WO2017198121A1 (en) * | 2016-05-20 | 2017-11-23 | 天鼎联创密封技术（北京）有限公司 | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103375146A (en) | Outburst prevention device and outburst prevention method for packer sealing mechanism | |
| CN102322237A (en) | Self-expansion packer | |
| CN102155251A (en) | Waterpower hole packer | |
| CN202970610U (en) | Packer rubber sleeve for downhole casing of oil and gas well | |
| CN202483504U (en) | Packer capable of preventing packer rubber barrel from being damaged | |
| CN107893641B (en) | A kind of underground work metal packer and method | |
| CN204371211U (en) | A kind of packer sealing structure based on the sealing of metal-rubber cylinder | |
| CN104563900A (en) | Metal rubber bearing and sealing-based expandable liner hanger joint | |
| CN102720464B (en) | Subsurface safety valve | |
| CN203131025U (en) | Metal seal ring with elastic deformation under stress | |
| CN201027527Y (en) | Plugging device | |
| CN108571297A (en) | Metal seal and downhole tool | |
| CN103541681A (en) | High-temperature-resistant high-pressure-resistant cross-class compression type seal component for bushes and barefoot wells | |
| CN107893642B (en) | A kind of application method of underground work metal packer | |
| CN205558825U (en) | Clamp of oil drill pipe abrasionproof protector | |
| CN204899850U (en) | Novel compound bridging plug of ball cage | |
| CN102913186A (en) | Gas injection valve | |
| CN202325290U (en) | Metal sealing joint for low-stress and high-sealing performance oil sleeve | |
| CN103104213B (en) | High-temperature high-pressure testing packer | |
| CN202266233U (en) | Compression packer rubber | |
| CN205805497U (en) | Enclosed compression packing element sealing unit | |
| CN209942783U (en) | High-temperature high-pressure oil and gas well open hole section packing well completion device | |
| CN205532578U (en) | High -efficient pit shaft corrosion monitoring link ware | |
| CN204899838U (en) | Compound bridging plug of ball cage | |
| CN201053314Y (en) | Horizontal well flexible short section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |