CN114198567A - Wet-type protection jumper connection method for underwater oil and gas production under seabed mud surface - Google Patents
Wet-type protection jumper connection method for underwater oil and gas production under seabed mud surface Download PDFInfo
- Publication number
- CN114198567A CN114198567A CN202111549442.8A CN202111549442A CN114198567A CN 114198567 A CN114198567 A CN 114198567A CN 202111549442 A CN202111549442 A CN 202111549442A CN 114198567 A CN114198567 A CN 114198567A
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- Prior art keywords
- protection system
- jumper
- flange
- wet
- jumper pipe
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 241000191291 Abies alba Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats or weights
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a jumper connection method for wet protection of underwater oil and gas production under the mud surface of a seabed, which comprises the following steps: 1) arranging a protection system connecting hole at a design position of a protection system wall; 2) the first end of the jumper pipe is connected with a manifold flange assembled on a manifold, a blind flange is pre-assembled at the second end of the jumper pipe, and the second end of the jumper pipe is fixed on the protection system connecting hole through a clamping groove; 3) and after the wet protection system, the external pipeline and the near protection system are assembled in an expansion bending mode, a diver swims to the protection system connecting hole on the outer side of the wet protection system, removes the blind flange, installs a welding neck flange, and completes pairing work of the welding neck flange at the second end of the jumper and the flange at the expansion bending end part of the near protection system on the outer side. The method does not need to carry out large-range special design on the wall of the protection system, only needs to pre-open the circular connecting holes at the design position on the wall, and has smaller design and construction difficulty.
Description
Technical Field
The invention relates to a jumper connection method for wet protection of underwater oil and gas production under the mud surface of a seabed, and belongs to the technical field of offshore oil and gas production.
Background
In general, a jumper is used in a subsea production system to connect a subsea wellhead with a manifold or to connect a manifold and an export pipeline, a midspan pipe in a deepwater subsea production system is usually connected by a subsea connector, the connector is arranged at a pipeline terminal or manifold, a midspan pipe in a shallow water subsea production system is usually connected by a subsea flange, and flanges are mounted at two ends of a pipeline and the jumper. The underwater production systems are all arranged above the mud surface of the seabed, connectors and flanges in the production systems do not need to be specially arranged and fixed, and the connection requirements and protection can be met. The existing underwater oil and gas production wet type protection system is positioned below the mud surface of a seabed, a jumper pipe is arranged in the protection system positioned below the mud surface of the seabed, the jumper pipe is connected with a wellhead and a manifold and still connected by a conventional flange, the protection system and the flange need to be specially prefabricated when being connected with an external transmission pipeline outside the protection system, and after the installation of the jumper pipe and the protection system is completed, the connection of the jumper pipe inside the protection system and the external transmission pipeline of the protection system is completed.
Disclosure of Invention
The invention provides a jumper connection method for wet protection of underwater oil and gas production under the mud surface of a seabed, which does not need to carry out large-range special design on a protection system wall, only needs to pre-open a circular connection hole at a design position on the wall, and has smaller design and construction difficulty.
In order to achieve the purpose, the invention adopts the following technical scheme:
a jumper connection method for wet protection of underwater oil and gas production under the surface of seabed mud comprises the following steps:
1) arranging a protection system connecting hole at a design position of a protection system wall;
2) the first end of the jumper pipe is connected with a manifold flange assembled on a manifold, a blind flange is pre-assembled at the second end of the jumper pipe, and the second end of the jumper pipe is fixed on the protection system connecting hole through a clamping groove;
3) and after the wet protection system, the external pipeline and the near protection system are assembled in an expansion bending mode, a diver swims to the protection system connecting hole on the outer side of the wet protection system, removes the blind flange, installs a welding neck flange, and completes pairing work of the welding neck flange at the second end of the jumper and the flange at the expansion bending end part of the near protection system on the outer side.
In the jumper pipe connecting method, preferably, a clamp groove gasket is assembled in the clamp groove, the second end of the jumper pipe is fixed on the protection system connecting hole through the clamp groove gasket, the clamp groove is located in the middle of the protection system connecting hole, and the periphery of the clamp groove is sealed.
In the jumper pipe connecting method, preferably, the clamping groove is composed of an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are fixedly connected, the clamping groove gasket is assembled on one side of the upper clamping plate, which is in contact with the second end of the jumper pipe, and the upper clamping plate and the lower clamping plate are buckled together to fix the second end of the jumper pipe and the blind flange.
In the jumper pipe connection method, preferably, the protection system connection hole is a circular connection hole for connecting the jumper pipe with the external pipeline inside and outside.
In the jumper pipe connecting method, preferably, the upper clamping plate and the lower clamping plate are made of steel plates or alloy plates.
In the jumper pipe connecting method, preferably, the second end of the jumper pipe is fastened and connected with the blind flange through a bolt.
In the jumper pipe connecting method, preferably, the upper clamping plate and the lower clamping plate are fixedly connected through bolts.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. by adopting the connecting method, the jumper pipe for connecting the manifold and the external pipeline is pre-installed in the protection system in advance, so that the quick connection between the external pipeline and the jumper pipe can be realized, and the construction period is saved.
2. By adopting the connecting method, the wall of the protection system does not need to be specially designed in a large range, and only the circular connecting holes are pre-formed in the designed positions on the wall, so that the design and construction difficulty is low.
3. By adopting the connecting method, the jumper pipe is pre-installed in the connecting hole of the protection system, so that the butt joint installation precision of the jumper pipe and the external pipeline is improved.
Drawings
Fig. 1 is a schematic diagram illustrating connection between a crossover pipe and a manifold and an external pipeline in a wet protection system according to an embodiment of the present invention;
fig. 2 is a schematic view of a connection hole structure of the protection system according to the embodiment of the present invention;
the respective symbols in the figure are as follows:
1-a manifold; 2, flange connection; 3-an external conveying pipeline; 4-seabed mud surface; 5-a top cover; 6-jumper tube; 7-protection system connection hole; 8-a clamping groove; 9-a protective system wall; 10-card slot gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the terms "first," "second," "third," "fourth," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
As shown in fig. 1, the connection mode is a conventional connection mode, a wet protection system for underwater oil and gas production is located below a seabed mud surface 4, a jumper pipe 6 is arranged in the wet protection system below the seabed mud surface 4, the jumper pipe 6 is connected with a wellhead and a manifold 1 by adopting a conventional flange, the wet protection system and the flange need to be specially prefabricated when being connected with an external transmission pipeline 3 outside the wet protection system, and after the installation of the jumper pipe 6 and the wet protection system is completed, the connection of the internal jumper pipe 6 of the protection system and the external transmission pipeline 3 of the protection system is completed.
The invention provides another connecting method suitable for connecting the midspan pipe 6 and the external conveying pipeline 3 in the wet protection system under the mud surface.
As shown in fig. 2, the protection system wall 9 is pre-opened with a protection system connection hole 7 (circular connection hole) at a design position, and the jumper pipe 6 and the external transmission pipeline 3 are connected inside and outside through the protection system connection hole 7. The first end of jumper tube 6 is connected with the flange assembled on manifold 1, a blind flange is pre-installed at the second end of jumper tube 6, the blind flange is fixed with the second end of jumper tube 6 through a bolt, the second end of jumper tube 6 and the blind flange are fixed on a protection system connecting hole 7 through a clamping groove gasket 10, sealing treatment is performed around a clamping groove 8, the clamping groove 8 is located in the middle of the protection system connecting hole 7 and consists of an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are made of steel plates or alloy plates, the upper clamping plate and the lower clamping plate are fixed through bolts, a fixing ring is installed on the inner side of the clamping groove and is directly contacted with the second end of jumper tube 6, the upper clamping plate and the lower clamping plate are buckled together to fix the second end of jumper tube 6 and the blind flange, and a bolt operation space is reserved. After the wet protection system, the external transmission pipeline 3 and the near protection system are arranged in an expansion bending mode, a diver swims to the connecting hole 7 of the protection system, the blind flange is detached, the welding neck flange is arranged, and the welding neck flange at the second end of the jumper pipe 6 and the flange at the expansion bending end part of the near protection system are matched.
The wet protection system of the underwater production system is a large-diameter steel cylinder device which penetrates into a seabed by a certain depth, and aiming at the seabed position where the protection equipment facility of the underwater production system is located, the wet protection system is formed by the following steps of 1: 2, excavating depth of about 3m, excavating a certain amount of seabed soil (excavated soil layer), and ensuring that the soil layer is not subjected to back silting or is subjected to a small amount of back silting during construction. Then, a large-diameter steel cylinder is installed above the sea level in a vibration sinking mode, and the steel cylinder above the mud surface of the sea bed is removed in a cutting mode. The steel cylinder penetrates the seabed to a certain depth, and the depth is determined by engineering geological conditions, the excavation depth inside the steel cylinder and the like. The soil body in the steel cylinder is excavated to the designed depth, and then the gravel layer is paved, so that the bearing capacity of the foundation is improved, and the settlement of the foundation is reduced. Two sea pipe holes, an umbilical cable hole and a cable hole are formed in the wall of the steel cylinder and are sealed through rubber belts. The steel cylinder top cover is lapped on the wall of the steel cylinder, and a Christmas tree equipment hole and a manhole are arranged on the steel cylinder top cover. And after the installation of the electric and hydraulic flying cable, the submarine pipe, the umbilical cable, the cable and the integrated manifold equipment in the steel cylinder is finished, covering a top cover of the steel cylinder, an equipment hole cover and a manhole cover. And finally, backfilling the soil layer around the steel cylinder. And then, forming a finished wet type safety protection system of the underwater production system.
The expansion bend of the near protection system is a steel pipeline, is arranged on the seabed and is buried in a ditch, and the expansion bend is connected with the inner pipeline and the outer pipeline of the protection system through flanges.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549442.8A CN114198567A (en) | 2021-12-17 | 2021-12-17 | Wet-type protection jumper connection method for underwater oil and gas production under seabed mud surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549442.8A CN114198567A (en) | 2021-12-17 | 2021-12-17 | Wet-type protection jumper connection method for underwater oil and gas production under seabed mud surface |
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| Publication Number | Publication Date |
|---|---|
| CN114198567A true CN114198567A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111549442.8A Pending CN114198567A (en) | 2021-12-17 | 2021-12-17 | Wet-type protection jumper connection method for underwater oil and gas production under seabed mud surface |
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| CN (1) | CN114198567A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3717002A (en) * | 1971-03-08 | 1973-02-20 | Brien B O | Method and apparatus for constructing and connecting underwater risers |
| US4809784A (en) * | 1987-02-17 | 1989-03-07 | Societe Nationale Elf Aquitaine (Production) | Tool for underwater connections on an oil production station |
| CN103423530A (en) * | 2012-07-11 | 2013-12-04 | 中国海洋石油总公司 | Mechanical locking type underwater pipe connector |
| US20140014314A1 (en) * | 2012-06-11 | 2014-01-16 | Halliburton Energy Services, Inc. | Shunt Tube Connection Assembly and Method |
| CN104060971A (en) * | 2014-06-19 | 2014-09-24 | 中国海洋石油总公司 | Assembly type underwater manifold structure |
| CN204004926U (en) * | 2014-05-30 | 2014-12-10 | 韩露 | Pipe connecting structure |
| CN205956641U (en) * | 2016-06-28 | 2017-02-15 | 北京精铭泰工程技术开发有限公司 | A ready -package blind plate for in liquid conveying equipment |
| DE102017117045A1 (en) * | 2017-07-27 | 2019-01-31 | "Agru" Kunststofftechnik Gesellschaft M.B.H. | Floatable pipe assembly |
| CN110439495A (en) * | 2019-08-21 | 2019-11-12 | 中海油能源发展股份有限公司 | A kind of subsea production system protective device |
| CN210263929U (en) * | 2019-07-10 | 2020-04-07 | 中铁建工集团有限公司 | A preformed hole template for building civil engineering |
| CN112267846A (en) * | 2020-11-11 | 2021-01-26 | 中海油能源发展股份有限公司 | A kind of underwater large-diameter steel cylinder caisson wellhead protection device and its implementation method |
| CN112682007A (en) * | 2020-12-22 | 2021-04-20 | 中海石油(中国)有限公司 | Wet-type protection system for oil and gas production under seabed mud surface |
-
2021
- 2021-12-17 CN CN202111549442.8A patent/CN114198567A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3717002A (en) * | 1971-03-08 | 1973-02-20 | Brien B O | Method and apparatus for constructing and connecting underwater risers |
| US4809784A (en) * | 1987-02-17 | 1989-03-07 | Societe Nationale Elf Aquitaine (Production) | Tool for underwater connections on an oil production station |
| US20140014314A1 (en) * | 2012-06-11 | 2014-01-16 | Halliburton Energy Services, Inc. | Shunt Tube Connection Assembly and Method |
| CN103423530A (en) * | 2012-07-11 | 2013-12-04 | 中国海洋石油总公司 | Mechanical locking type underwater pipe connector |
| CN204004926U (en) * | 2014-05-30 | 2014-12-10 | 韩露 | Pipe connecting structure |
| CN104060971A (en) * | 2014-06-19 | 2014-09-24 | 中国海洋石油总公司 | Assembly type underwater manifold structure |
| CN205956641U (en) * | 2016-06-28 | 2017-02-15 | 北京精铭泰工程技术开发有限公司 | A ready -package blind plate for in liquid conveying equipment |
| DE102017117045A1 (en) * | 2017-07-27 | 2019-01-31 | "Agru" Kunststofftechnik Gesellschaft M.B.H. | Floatable pipe assembly |
| CN210263929U (en) * | 2019-07-10 | 2020-04-07 | 中铁建工集团有限公司 | A preformed hole template for building civil engineering |
| CN110439495A (en) * | 2019-08-21 | 2019-11-12 | 中海油能源发展股份有限公司 | A kind of subsea production system protective device |
| CN112267846A (en) * | 2020-11-11 | 2021-01-26 | 中海油能源发展股份有限公司 | A kind of underwater large-diameter steel cylinder caisson wellhead protection device and its implementation method |
| CN112682007A (en) * | 2020-12-22 | 2021-04-20 | 中海石油(中国)有限公司 | Wet-type protection system for oil and gas production under seabed mud surface |
Non-Patent Citations (1)
| Title |
|---|
| 陈维: "汉英日消防技术词典", vol. 1, 31 January 2005, 上海科学技术出版社, pages: 3399 * |
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Application publication date: 20220318 |
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| RJ01 | Rejection of invention patent application after publication |