CN202970610U - Oil and gas well underground casing pipe packer rubber sleeve - Google Patents
Oil and gas well underground casing pipe packer rubber sleeve Download PDFInfo
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- 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
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- rubber sleeve
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- gas well
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Abstract
The utility model discloses an oil and gas well underground casing pipe packer rubber sleeve. The oil and gas well underground casing pipe packer rubber sleeve comprises a rubber sleeve body. The rubber sleeve body comprises a head-end rubber sleeve main body, a middle rubber sleeve main body and a tail-end rubber sleeve main body, the head-end rubber sleeve main body, the middle rubber sleeve main body and the tail-end rubber sleeve main body are of an integrated structure, and the hardness of the head-end rubber sleeve main body and the tail-end rubber sleeve main body is higher than that of the middle rubber sleeve main body. According to the oil and gas well underground casing pipe packer rubber sleeve, differential pressure and temperature bearing capacity of a packer can be improved, and the packer can bear the operating differential pressure of 105 MPa and the underground temperature of 177 DEG C.
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 | Oil and gas well underground casing pipe packer rubber sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692010 CN202970610U (en) | 2012-12-14 | 2012-12-14 | Oil and gas well underground casing pipe packer rubber sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970610U true CN202970610U (en) | 2013-06-05 |
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ID=48511697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220692010 Expired - Lifetime CN202970610U (en) | 2012-12-14 | 2012-12-14 | Oil and gas well underground casing pipe packer rubber sleeve |
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 |
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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 |