CN113775315A - High-temperature high-pressure sealing system - Google Patents
High-temperature high-pressure sealing system Download PDFInfo
- Publication number
- CN113775315A CN113775315A CN202111153543.3A CN202111153543A CN113775315A CN 113775315 A CN113775315 A CN 113775315A CN 202111153543 A CN202111153543 A CN 202111153543A CN 113775315 A CN113775315 A CN 113775315A
- Authority
- CN
- China
- Prior art keywords
- rubber cylinder
- ring
- temperature
- drilling
- high temperature
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 74
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/01—Sealings characterised by their shape
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)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a high-temperature and high-pressure sealing system which comprises a supporting back ring, an anti-drilling ring, an end rubber cylinder, a rubber cylinder spacer ring, a middle rubber cylinder and a retaining ring, wherein the retaining ring is arranged in the middle of the inner side of the middle rubber cylinder, the rubber cylinder spacer rings are arranged at two ends of the middle rubber cylinder, the rubber cylinder spacer ring is connected with the end rubber cylinder, the end rubber cylinder is connected with the supporting back ring, the anti-drilling ring is arranged between the end rubber cylinder and the supporting back ring, the supporting back ring is of a bowl-shaped structure, and the outer end of the supporting back ring is provided with a threaded structure. The high-temperature and high-pressure resistant sealing system can realize stronger bidirectional pressure difference resistance under extreme severe well condition environments such as high temperature, high pressure and the like, and has better temperature resistance, pressure bearing performance and stability.
Description
Technical Field
The invention belongs to the technical field of drilling and production of oil wells in oil fields, and particularly relates to a high-temperature and high-pressure sealing system.
Background
Currently, with continuous development of oil and gas reservoirs, the gradual reduction of easily produced oil and gas resources and the gradual increase of global economy on the demand of oil and gas resources, drilling activities are continuously shifted to high-risk and challenging environments such as complex geological areas, deep water, extreme high temperature and high pressure, the proportion of oil field high temperature and high pressure wells is increasing, the well conditions of the high pressure and high temperature wells are more complex, the requirements on the performance of a well completion sealing system are higher, the application effect of a conventional sealing system in the high temperature and high pressure environment is poor, and the risk of sealing failure exists under high temperature and high pressure resistance and pressure alternating load.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the high-temperature and high-pressure resistant sealing system which has stronger bidirectional pressure difference resistance under extremely severe well condition environments such as high temperature, high pressure and the like, and has better temperature resistance, pressure bearing property and stability.
In order to achieve the purpose, the invention adopts the following technical scheme: the high-temperature and high-pressure sealing system comprises a supporting back ring, an anti-drilling ring, an end rubber cylinder, a rubber cylinder spacer ring, a middle rubber cylinder and a bearing ring, wherein the bearing ring is arranged in the middle of the inner side of the middle rubber cylinder, the rubber cylinder spacer ring is arranged at two ends of the middle rubber cylinder, the rubber cylinder spacer ring is connected with the end rubber cylinder, the end rubber cylinder is connected with the supporting back ring, the anti-drilling ring is arranged between the end rubber cylinder and the supporting back ring, the supporting back ring is of a bowl-shaped structure, and a threaded structure is arranged at the outer end of the supporting back ring.
In the above technical scheme, the section of the anti-drilling ring is in an isosceles triangle structure.
In the technical scheme, the matching contact surface of the support back ring and the end rubber cylinder is in inclined plane matching, and the matching angle is 25-60 degrees.
In the above technical scheme, the cross section of the rubber barrel spacer ring is of a Z-shaped structure.
In the technical scheme, the cross section of the retaining ring is of a semicircular structure.
In the above technical solution, the section radius R of the retaining ring is: 3-8 mm.
In the above technical scheme, the matching contact surfaces of the end rubber tube, the middle rubber tube and the rubber tube spacer ring are in L-shaped matching, and the end rubber tube and the rubber tube spacer ring are in an integrated structure.
In the technical scheme, the matching contact surface of the middle rubber sleeve and the bearing ring is matched by an arc surface.
In the above technical scheme, the end rubber cylinder and the middle rubber cylinder are made of fluorine-containing high polymer elastomer material, and the hardness of the end rubber cylinder is as follows: 90-98DURO, Medium Cylinder hardness: 70-85 DUEO.
The invention has the beneficial effects that: by adopting the sealing system, the sealing system has stronger bidirectional differential pressure resistance under extreme severe well condition environments such as high temperature, high pressure and the like, and has better temperature resistance, pressure bearing performance and stability.
Drawings
Fig. 1 is a schematic half sectional structure of the present invention.
Fig. 2 is a schematic half-sectional structural view of another embodiment of the present invention.
Wherein: 1. the support back ring, 2, the anti-drilling ring, 3, the end rubber cylinder, 4, the rubber cylinder spacer ring, 5, the middle rubber cylinder and 6, the retaining ring.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
The high-temperature high-pressure sealing system comprises a supporting back ring 1, an anti-drilling ring 2, an end rubber cylinder 3, a rubber cylinder spacer ring 4, a middle rubber cylinder 5 and a bearing ring 6, wherein the bearing ring 6 is arranged in the middle of the inner side of the middle rubber cylinder 5, the rubber cylinder spacer rings 4 are arranged at two ends of the middle rubber cylinder 5, the rubber cylinder spacer ring 4 is connected with the end rubber cylinder 3, the end rubber cylinder 3 is connected with the supporting back ring 1, the anti-drilling ring 2 is arranged between the end rubber cylinder 3 and the supporting back ring 1, the supporting back ring 1 is of a bowl-shaped structure, and the outer end of the supporting back ring 1 is provided with a thread structure.
In the technical scheme, the section of the anti-drilling ring 2 is in an isosceles triangle structure.
In the technical scheme, the matching contact surface of the support back ring 1 and the end rubber tube 3 is in inclined plane matching, and the matching angle is 25-60 degrees.
In the above technical scheme, the cross section of the rubber barrel spacer ring 4 is of a Z-shaped structure.
In the above technical solution, the cross section of the retaining ring 6 is a semicircular structure.
In the above technical solution, the section radius R of the retaining ring 6: 3-8 mm.
In the above technical scheme, the matching contact surfaces of the end rubber tube 3, the middle rubber tube 5 and the rubber tube spacer ring 4 are in L-shaped matching, and the end rubber tube 3 and the rubber tube spacer ring 4 are in an integrated structure.
In the technical scheme, the matching contact surface of the middle rubber tube 5 and the retaining ring 6 is matched by an arc surface.
In the above technical scheme, the end rubber cylinder 3 and the middle rubber cylinder 5 are made of a fluorine-containing polymer elastomer material, and the hardness of the end rubber cylinder is as follows: 90-98DURO, Medium Cylinder hardness: 70-85 DUEO.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A high-temperature high-pressure sealing system is characterized in that: the anti-drilling support comprises a support back ring, an anti-drilling ring, an end rubber cylinder, a rubber cylinder spacer ring, a middle rubber cylinder and a bearing ring, wherein the bearing ring is arranged in the middle of the inner side of the middle rubber cylinder, the rubber cylinder spacer ring is arranged at two ends of the middle rubber cylinder, the rubber cylinder spacer ring is connected with the end rubber cylinder, the end rubber cylinder is connected with the support back ring, the anti-drilling ring is arranged between the end rubber cylinder and the support back ring, the support back ring is of a bowl-shaped structure, and the outer end of the support back ring is provided with a thread structure.
2. A high temperature and high pressure seal system as claimed in claim 1, wherein: the section of the anti-drilling ring is of an isosceles triangle structure.
3. A high temperature and high pressure seal system as claimed in claim 1, wherein: the supporting back ring and the end rubber sleeve are matched with each other by inclined surfaces, and the matching angle is 25-60 degrees.
4. A high temperature and high pressure seal system as claimed in claim 1, wherein: the cross section of packing element spacer ring is Z style of calligraphy structure.
5. A high temperature and high pressure seal system as claimed in claim 1, wherein: the section of the retaining ring is of a semicircular structure.
6. A high temperature and high pressure seal system according to claim 5, wherein: the section radius R of the retaining ring is as follows: 3-8 mm.
7. A high temperature and high pressure seal system as claimed in claim 1, wherein: the matching contact surfaces of the end rubber cylinder, the middle rubber cylinder and the rubber cylinder spacer ring are in L-shaped matching, and the end rubber cylinder and the rubber cylinder spacer ring are of an integrated structure.
8. A high temperature and high pressure seal system as claimed in claim 1, wherein: the matching contact surface of the middle rubber cylinder and the retaining ring is matched by an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153543.3A CN113775315A (en) | 2021-09-29 | 2021-09-29 | High-temperature high-pressure sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153543.3A CN113775315A (en) | 2021-09-29 | 2021-09-29 | High-temperature high-pressure sealing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113775315A true CN113775315A (en) | 2021-12-10 |
Family
ID=78854478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111153543.3A Pending CN113775315A (en) | 2021-09-29 | 2021-09-29 | High-temperature high-pressure sealing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113775315A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202483503U (en) * | 2012-03-08 | 2012-10-10 | 天津汇铸石油设备科技有限公司 | Rubber barrel shoulder protector anti-channeling anchor ring |
| US20130153796A1 (en) * | 2011-05-26 | 2013-06-20 | Southwest Petroleum University | Underground Annular Blowout Preventer and Assembly Process Thereof |
| US20130180705A1 (en) * | 2010-07-28 | 2013-07-18 | Well Innovation Engineering As | Expanding elastomer/plug device for sealing bore hole and pipelines |
| US20160208573A1 (en) * | 2013-08-28 | 2016-07-21 | Saltel Industries | Tubular element with dynamic sealing and method for applying same against the wall of a wellbore |
| CN205422627U (en) * | 2016-03-14 | 2016-08-03 | 上海尊优自动化设备有限公司 | Rubber sleeve protection device of packer |
| CN106481305A (en) * | 2016-12-08 | 2017-03-08 | 隆学武 | Composite structure, packing element manufacture method, packing element, packer and bridging plug |
| CN206319847U (en) * | 2016-12-28 | 2017-07-11 | 荆州市赛瑞能源技术有限公司 | A kind of hydraulic suspension hanging device for crossing oil pipe |
| CN209742833U (en) * | 2019-03-13 | 2019-12-06 | 中国石油化工股份有限公司 | Rubber tube device |
| 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 |
| CN212837680U (en) * | 2020-05-18 | 2021-03-30 | 天津市万特能源技术有限公司 | Well completion high-temperature high-pressure packer rubber sleeve |
| CN216381310U (en) * | 2021-09-29 | 2022-04-26 | 四机赛瓦石油钻采设备有限公司 | High-temperature high-pressure sealing system |
-
2021
- 2021-09-29 CN CN202111153543.3A patent/CN113775315A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130180705A1 (en) * | 2010-07-28 | 2013-07-18 | Well Innovation Engineering As | Expanding elastomer/plug device for sealing bore hole and pipelines |
| US20130153796A1 (en) * | 2011-05-26 | 2013-06-20 | Southwest Petroleum University | Underground Annular Blowout Preventer and Assembly Process Thereof |
| CN202483503U (en) * | 2012-03-08 | 2012-10-10 | 天津汇铸石油设备科技有限公司 | Rubber barrel shoulder protector anti-channeling anchor ring |
| US20160208573A1 (en) * | 2013-08-28 | 2016-07-21 | Saltel Industries | Tubular element with dynamic sealing and method for applying same against the wall of a wellbore |
| CN205422627U (en) * | 2016-03-14 | 2016-08-03 | 上海尊优自动化设备有限公司 | Rubber sleeve protection device of packer |
| CN106481305A (en) * | 2016-12-08 | 2017-03-08 | 隆学武 | Composite structure, packing element manufacture method, packing element, packer and bridging plug |
| CN206319847U (en) * | 2016-12-28 | 2017-07-11 | 荆州市赛瑞能源技术有限公司 | A kind of hydraulic suspension hanging device for crossing oil pipe |
| CN209742833U (en) * | 2019-03-13 | 2019-12-06 | 中国石油化工股份有限公司 | Rubber tube device |
| 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 |
| CN212837680U (en) * | 2020-05-18 | 2021-03-30 | 天津市万特能源技术有限公司 | Well completion high-temperature high-pressure packer rubber sleeve |
| CN216381310U (en) * | 2021-09-29 | 2022-04-26 | 四机赛瓦石油钻采设备有限公司 | High-temperature high-pressure sealing system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221118 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 434024 No. 101, West Ring Road, Jingzhou District, Jingzhou City, Hubei Province Applicant before: SJS Ltd. |