CN113898324A - Protection system and method for underwater production under seabed mud surface - Google Patents
Protection system and method for underwater production under seabed mud surface Download PDFInfo
- Publication number
- CN113898324A CN113898324A CN202111157625.5A CN202111157625A CN113898324A CN 113898324 A CN113898324 A CN 113898324A CN 202111157625 A CN202111157625 A CN 202111157625A CN 113898324 A CN113898324 A CN 113898324A
- Authority
- CN
- China
- Prior art keywords
- underwater
- production
- caisson
- manifold
- mud surface
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 241000191291 Abies alba Species 0.000 claims description 73
- 235000004507 Abies alba Nutrition 0.000 claims description 73
- 239000007788 liquid Substances 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000009189 diving Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
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)
- Geophysics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a protection system and a method for underwater production under the mud surface of a seabed, wherein the system comprises a caisson, wherein a cluster of production manifolds, a plurality of production trees, an antifouling device and two underwater camera devices are arranged in the caisson; the method comprises the following steps: sinking the steel cylinder to form a caisson; drilling a plurality of oil production wells and a plurality of water injection wells; installing facilities inside the caisson; the external pipeline of the caisson is connected; opening a hole on the top cover, installing and backfilling. The invention discloses a protection system and a method for underwater production under the seabed mud surface, which simplifies the internal pipe cable connection of protection facilities of an underwater production system in the oil and gas development process, has compact, reasonable and safe arrangement, and meets the requirements of the overall arrangement method of an oil and gas production wet protection system under the seabed mud surface and the requirements of installation and maintenance operation of facilities in the underwater production system.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to a protection system and a protection method for underwater production under a seabed mud surface.
Background
The underwater production system gradually becomes an important technical means for efficiently developing oil and gas fields in deep water, navigation areas and restricted areas. Subsea production systems are typically located above the mud surface and employ a sufficiently secure foundation and protective structure over which the fishing net can slide to protect the subsea production facility. For subsea production systems in the navigable area, the facilities are also at risk from surface drops. The underwater caisson consists of a steel cylinder and key equipment of an underwater production system, equipment such as a Christmas tree and a manifold and the like are arranged in the steel cylinder, the steel cylinder and a top cover of the steel cylinder can play a certain protection role, and the impact load suffered by the underwater production system in a navigation area can be effectively reduced or avoided.
At present, the protection design of the underwater production system aims at facilities on the seabed mud surface, and the research and design of the scheme of the underwater production system under the seabed mud surface in the navigation area are not carried out. Compared with the conventional mud surface underwater production system, the caisson of the steel cylinder under the mud surface requires more compact and efficient arrangement of internal facilities due to limited space, and the design of the protection facilities of the existing underwater production system cannot meet the requirement of arrangement of the protection facilities of the seabed mud surface underwater production system.
Disclosure of Invention
The invention aims to provide a protection system and a protection method for underwater production under a seabed mud surface, which are used for solving the problem that the design of protection facilities of the existing underwater production system cannot meet the overall arrangement requirement of an oil-gas production wet protection system under the seabed mud surface.
The invention provides a protection system for underwater production under the mud surface of a seabed, which comprises a caisson, wherein a cluster of production manifolds, a plurality of Christmas trees, an antifouling device and two underwater cameras are arranged in the caisson; each Christmas tree is connected with an underwater production manifold through a jumper pipe; a probe cabin is arranged in the antifouling device, and the antifouling device and the probe cabin are arranged in the middle of the underwater production manifold; the two underwater camera devices are respectively arranged near two sides of the underwater production manifold, and the underwater camera devices can realize underwater 360-degree camera shooting and are used for underwater all-dimensional visual monitoring.
Preferably, 6 Christmas trees are arranged in the caisson, and the caisson comprises 3 Christmas trees for water injection and 3 Christmas trees for production, wherein the 3 Christmas trees for production and the 3 Christmas trees for water injection are respectively positioned at two sides of the underwater production manifold and are respectively and symmetrically arranged relative to the longitudinal center line of the underwater production manifold.
Preferably, the underwater umbilical cable system further comprises an umbilical cable underwater terminal and an underwater power distribution unit, wherein the umbilical cable underwater terminal and the underwater power distribution unit are both arranged near the underwater production manifold, and two ends of the underwater production manifold are respectively integrated with 3 underwater control modules and 2 underwater routing modules; the power output end of the underwater power distribution unit is connected with the Christmas tree through a power flying line, and the power input end of the underwater power distribution unit is connected with an external cable; the output end of the underwater umbilical cable terminal is connected with 2 underwater routing modules through photoelectric flying lines and 3 underwater control modules through liquid flying lines, and the input end of the underwater umbilical cable terminal is connected with an external umbilical cable; the 2 underwater routing modules are connected with the 3 underwater control modules through electric flying wires; each Christmas tree is respectively connected with 3 underwater control modules through electro-hydraulic flying lines.
Preferably, the power flying lead and the electro-hydraulic flying lead are arranged along a wall surface of the caisson.
Preferably, the distance between the christmas tree and the wall surface of the caisson, the distance between the christmas tree and the wall surface of the subsea production manifold, and the distance between adjacent christmas trees are controlled to be 2m or more.
Preferably, the top end of the caisson is provided with a top cover, and a Christmas tree access hole is formed in the top cover corresponding to the upper part of each Christmas tree and used for overhauling and recovering the Christmas trees; the top covers corresponding to the upper parts of the 3 underwater control modules are respectively provided with an underwater control module recovery hole for recovering the underwater control modules; underwater routing module recovery holes are formed in the top covers corresponding to the upper portions of the 2 underwater routing modules and used for recovering the underwater routing modules; and the top covers corresponding to the upper parts of the two sides of the underwater production manifold are provided with artificial holes for diving workers to enter and exit the caisson.
The invention relates to a protection method for underwater production under the mud surface of a seabed, which adopts the protection system for underwater production under the mud surface of the seabed and comprises the following steps:
step A: sinking the steel cylinder to form a caisson;
and B: drilling a plurality of oil production wells and a plurality of water injection wells;
and C: installing facilities inside the caisson;
step D: connecting pipelines inside the caisson;
step E: the external pipeline of the caisson is connected;
step F: opening a hole on the top cover, installing and backfilling.
Preferably, the caisson internal facility installation specifically comprises the following steps:
installing a production manifold in the center of the caisson to form an underwater production manifold, configuring a water injection pipeline and a mixed transmission pipeline, and integrating 3 underwater control modules and 2 underwater routing modules at two ends of the underwater production manifold respectively;
respectively installing the Christmas trees on a plurality of oil production wells and a plurality of water injection wells to respectively form the Christmas trees for water injection and the Christmas trees for production;
arranging an antifouling device in the middle of the underwater production manifold, wherein a probe cabin is arranged in the antifouling device;
two underwater camera devices are respectively arranged near two sides of the underwater production manifold and used for underwater omnibearing visual monitoring;
the umbilical cable underwater terminal and the underwater power distribution unit are arranged near the underwater production manifold.
Preferably, the caisson internal pipeline connection specifically comprises the following steps:
each Christmas tree is respectively connected with the underwater production manifold through a jumper pipe;
the power output end of the underwater power distribution unit is connected with the Christmas tree through a power flying line;
the output end of the umbilical cable underwater terminal is connected with 2 underwater routing modules through photoelectric flying lines and is connected with 3 underwater control modules through liquid flying lines;
the 2 underwater routing modules are connected with the 3 underwater control modules through electric flying wires;
each Christmas tree is respectively connected with 3 underwater control modules through electro-hydraulic flying lines.
Preferably, the caisson external pipe connection specifically comprises the following steps:
the water injection pipeline and the mixed transportation pipeline of the underwater production manifold are respectively butted with an external water injection pipe and an external mixed transportation pipe;
the power input end of the underwater power distribution unit is connected with an external cable;
the input end of the underwater umbilical cable terminal is connected with an external umbilical cable.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a protection system and a method for underwater production under a seabed mud surface, which simplifies the internal pipe cable connection of protection facilities of an underwater production system in the oil and gas development process, has compact, reasonable and safe arrangement, and meets the requirements of the overall arrangement method of an oil and gas production wet protection system under the seabed mud surface and the requirements of installation and maintenance operation of facilities in the underwater production system.
Drawings
Fig. 1 is a top view of a caisson provided in example 1 of the invention;
fig. 2 is a side view of a caisson provided in accordance with example 1 of the invention;
fig. 3 is another side view of the caisson provided in example 1 of the invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a protection system and a method for underwater production under a seabed mud surface, wherein the underwater production system comprises an underwater production manifold 1, a plurality of Christmas trees 2, an underwater power distribution unit (SPDU for short), an umbilical cable underwater terminal (UTA for short), an antifouling device 3 and the like, and the devices are connected through a pipe cable or a flying wire.
The protection method adopts a steel cylinder wet protection mode, various devices of the underwater production system are installed in a caisson 100 formed by the steel cylinders, so that the overall arrangement of the devices meets the requirement of compact arrangement, and the following principles are followed:
(1) the overall arrangement is reasonable, the optimal requirements of the process flow are met, meanwhile, the layout of underwater facilities is optimized as much as possible on the premise of ensuring safety and reliability, and the size of the caisson main body is controlled;
(2) proper space should be reserved between the underwater production facilities to avoid mutual interference during installation or maintenance of the underwater facilities;
(3) the arrangement of the underwater production system meets the installation sequence of underwater facilities, the capacity and the installation precision of construction machines and tools, and meets the field installation and connection requirements of facilities such as a Christmas tree, a manifold, a sea pipe, an umbilical cable, a jumper pipe, a flying line and the like;
(4) the requirements of later-stage operation and maintenance of underwater facilities such as manifolds and Christmas trees are met, the diver operation channel and the operation space are reserved reasonably, the operation channel is beneficial to the operation of valves and Christmas trees, and the operating radius of the diver is considered to be 2 m;
(5) the requirements of personnel for entering and exiting the cabin and emergency escape are met, and the internal clear height of the caisson is fully utilized;
(6) the requirements of drilling and completion/workover operation procedures and later-stage operation and maintenance are met, and the distance from the Christmas tree to adjacent facilities and the wall of the caisson is controlled to be more than 2 m;
(7) the cable, the umbilical cable, the mixed transportation pipeline and the water injection pipeline are provided with a slot at the position 2.5m away from the mud surface on the wall of the caisson.
Wherein, the steel cylinder buries the seabed mud face and forms caisson 100, both plays the effect of ground support, also plays the effect of underwater production system protection.
Example 1
Referring to fig. 1 to 3, the protection system for underwater production located under the mud surface of the seabed comprises a caisson 100, wherein the caisson 100 is formed by burying a steel cylinder under the mud surface of the seabed, and specifically, the inner wall of the caisson 100 has a diameter of 29m and a height of 7.5 m.
The caisson 100 is internally provided with a cluster production manifold 1, a plurality of Christmas trees 2, an antifouling device 3, two underwater cameras 4, an umbilical cable underwater terminal (UTA for short), and an underwater power distribution unit (SPDU for short),
the underwater production manifold 1 is arranged in the center of the caisson 100 and is provided with a water injection pipeline for water injection and a mixed transportation pipeline for oil gas transportation;
each Christmas tree 2 is connected with an underwater production manifold 1 through a jumper pipe;
a probe cabin is arranged in the antifouling device 3, and the antifouling device 3 and the probe cabin are arranged in the middle of the underwater production manifold 1;
two underwater camera devices 4 are respectively arranged near two sides of the underwater production manifold 1, and the underwater camera devices 4 can realize underwater 360-degree shooting and are used for underwater all-dimensional visual monitoring.
Preferably, 6 christmas trees 2, including 3 christmas trees for waterflooding and 3 christmas trees for production, may be arranged in the caisson 100. In a specific embodiment, 3 production trees and 3 water injection trees are respectively located at two sides of the subsea production manifold 1 and are respectively symmetrically arranged with respect to the longitudinal center line of the subsea production manifold 1. In another specific implementation, the positions and the number of the production Christmas trees and the water injection Christmas trees can be determined according to the actual project conditions.
Two ends of the underwater production manifold 1 are respectively integrated with 3 underwater control modules (SCM for short in English) and 2 underwater routing modules (SRM for short in English);
the umbilical cable underwater terminal UTA and the underwater power distribution unit SPDU are both arranged near the underwater production manifold 1, the power output end of the underwater power distribution unit SPDU is connected with the Christmas tree 2 through a power flying line, and the power input end of the underwater power distribution unit SPDU is connected with an external cable;
the output end of the umbilical cable underwater terminal UTA is connected with 2 underwater routing modules SRM through photoelectric flying lines and connected with 3 underwater control modules through liquid flying lines, and the input end of the umbilical cable underwater terminal UTA is connected with an external umbilical cable;
the 2 underwater routing modules SRM are connected with the 3 underwater control modules SCM through electric flying wires;
each Christmas tree 2 is respectively connected with 3 underwater control modules SCM through electro-hydraulic flying lines.
Wherein, the umbilical cable is a combination of a cable (signal cable), an optical cable (single-mode or multi-mode optical cable), and a hydraulic or chemical agent pipe (steel pipe or hose); the photoelectric flying line is a general name of the optical flying line and the electric flying line, the electric flying line is a general name of the electric flying line and the liquid flying line, the power flying line is a strong electric line for transmitting electric power, the optical flying line refers to an optical cable, the electric flying line is a weak electric line provided with a signal cable, and the liquid flying line is a liquid conveying pipe internally provided with hydraulic or chemical agents.
To reduce the risk of entanglement for diver maintenance operations, both power flying leads and electro-hydraulic flying leads are disposed along the walls of caisson 100.
To ensure sufficient operating space for divers, the distance of the christmas tree 2 from the wall of the caisson 100, the distance of the christmas tree 2 from the wall of the subsea production manifold 1, and the distance between adjacent christmas trees 2 are controlled to be above 2 m.
To seal the caisson 100, the top end of the caisson 100 is provided with a top cover.
A Christmas tree access hole is arranged on the corresponding top cover above each Christmas tree 2, is a rectangular hole with the size of 4.5m multiplied by 4.5m and is used for overhauling and recovering the Christmas trees;
underwater control module recovery holes are respectively formed in the corresponding top covers above the 3 underwater control modules, are rectangular holes of 4.5m multiplied by 4.5m and are used for recovering the underwater control modules;
underwater routing module recycling holes are respectively formed in the corresponding top covers above the 2 underwater routing modules, are rectangular holes of 4m multiplied by 3m and are used for recycling the underwater routing modules;
the top covers corresponding to the upper parts of the two sides of the underwater production manifold 1 are respectively provided with a manual hole which is a rectangular hole with the size of 3m multiplied by 3m and is used for a diver to get in and out of the caisson.
Example 2
step A: sinking the steel cylinder to form a caisson 100;
excavating a foundation trench, after excavating to a designed depth, sinking and installing the steel cylinder in a vibration sinking mode until the steel cylinder is sunk and installed in place, excavating mud in the steel cylinder to the designed depth to form a foundation pit, and taking the steel cylinder as a support of the foundation pit to form a caisson 100, wherein the top end of the caisson 100 is flush with a mud surface, and the whole caisson 100 is below a seabed mud surface;
and B: drilling a plurality of oil production wells and a plurality of water injection wells;
the drilling ship performs drilling operation in the caisson 100 to drill a plurality of oil production wells and a plurality of water injection wells;
and C: the installation of the internal facilities of the caisson 100 specifically comprises the following steps:
installing a production manifold in the center of the caisson 100 to form an underwater production manifold 1, configuring a water injection pipeline and a mixed transmission pipeline, and integrating 3 underwater control modules and 2 underwater routing modules at two ends of the underwater production manifold 1 respectively;
respectively installing the Christmas trees 2 on a plurality of oil production wells and a plurality of water injection wells to respectively form the Christmas trees for water injection and the Christmas trees for production;
arranging an antifouling device 3 in the middle of the underwater production manifold 1, wherein a probe cabin is arranged in the antifouling device 3;
two underwater cameras 4 are respectively arranged near two sides of the underwater production manifold 1 and used for underwater omnibearing visual monitoring;
the umbilical cable underwater terminal and the underwater power distribution unit are arranged near the underwater production manifold 1;
step D: the pipeline connection in caisson 100 specifically comprises the following steps:
each Christmas tree 2 is respectively connected with the underwater production manifold 1 through a jumper pipe;
the power output end of the underwater power distribution unit is connected with the Christmas tree 2 through a power flying line;
the output end of the umbilical cable underwater terminal is connected with 2 underwater routing modules through photoelectric flying lines and is connected with 3 underwater control modules through liquid flying lines;
the 2 underwater routing modules are connected with the 3 underwater control modules through electric flying wires;
each Christmas tree is respectively connected with 3 underwater control modules through an electro-hydraulic flying line;
step E: caisson 100 external piping connections;
the water injection pipeline and the mixed transportation pipeline of the underwater production manifold 1 are respectively butted with an external water injection pipe and an external mixed transportation pipe;
the power input end of the underwater power distribution unit is connected with an external cable;
the input end of the umbilical cable underwater terminal is connected with an external umbilical cable;
step F: opening a hole on the top cover, and mounting and backfilling;
the top cover is provided with a Christmas tree access hole, an underwater control module recovery hole, an underwater routing module recovery hole and a manual hole in advance;
the Christmas tree access holes are respectively positioned on the corresponding top covers above each Christmas tree 2, the underwater control module recovery holes are respectively positioned on the corresponding top covers above 3 underwater control modules, the underwater routing module recovery holes are respectively positioned on the corresponding top covers above 2 underwater routing modules, and the artificial holes are respectively positioned on the corresponding top covers above two sides of the underwater production manifold 1;
installing a top cover on the top end of the caisson;
backfilling the soil to near the top of the caisson.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A protection system for underwater production under the mud surface of the seabed is characterized by comprising a caisson,
a cluster production manifold, a plurality of Christmas trees, an antifouling device and two underwater cameras are arranged in the caisson,
the underwater production manifold is arranged in the center of the caisson and is provided with a water injection pipeline for injecting water and a mixed transportation pipeline for transporting oil gas;
each Christmas tree is connected with an underwater production manifold through a jumper pipe;
a probe cabin is arranged in the antifouling device, and the antifouling device and the probe cabin are arranged in the middle of the underwater production manifold;
the two underwater camera devices are respectively arranged near two sides of the underwater production manifold, and the underwater camera devices can realize underwater 360-degree camera shooting and are used for underwater all-dimensional visual monitoring.
2. The subsea production containment system located below a seabed mud surface of claim 1,
6 Christmas trees are arranged in the caisson, the caisson comprises 3 Christmas trees for water injection and 3 Christmas trees for producing the Christmas trees,
the 3 production Christmas trees and the 3 water injection Christmas trees are respectively positioned at two sides of the underwater production manifold and are respectively and symmetrically arranged about the longitudinal central line of the underwater production manifold.
3. The subsea production containment system located below a seabed mud surface of claim 2, further comprising an umbilical subsea termination and a subsea power distribution unit, both said umbilical subsea termination and said subsea power distribution unit being disposed proximate to said subsea production manifold,
the two ends of the underwater production manifold are respectively integrated with 3 underwater control modules and 2 underwater routing modules;
the power output end of the underwater power distribution unit is connected with the Christmas tree through a power flying line, and the power input end of the underwater power distribution unit is connected with an external cable;
the output end of the underwater umbilical cable terminal is connected with 2 underwater routing modules through photoelectric flying lines and 3 underwater control modules through liquid flying lines, and the input end of the underwater umbilical cable terminal is connected with an external umbilical cable;
the 2 underwater routing modules are connected with the 3 underwater control modules through electric flying wires;
each Christmas tree is respectively connected with 3 underwater control modules through electro-hydraulic flying lines.
4. The subsea production containment system located below a seabed mud surface of claim 3,
the power flying line and the electro-hydraulic flying line are arranged along the wall surface of the caisson.
5. The subsea production containment system located below a seabed mud surface of claim 1,
the distance between the Christmas tree and the wall surface of the caisson, the distance between the Christmas tree and the wall surface of the underwater production manifold and the distance between the adjacent Christmas trees are controlled to be more than 2 m.
6. The subsea production containment system located below a seabed mud surface of claim 3,
the top end of the caisson is provided with a top cover,
a Christmas tree access hole is formed in the top cover corresponding to the upper part of each Christmas tree and is used for overhauling and recovering the Christmas trees;
the top covers corresponding to the upper parts of the 3 underwater control modules are respectively provided with an underwater control module recovery hole for recovering the underwater control modules;
underwater routing module recovery holes are formed in the top covers corresponding to the upper portions of the 2 underwater routing modules and used for recovering the underwater routing modules;
and the top covers corresponding to the upper parts of the two sides of the underwater production manifold are provided with artificial holes for diving workers to enter and exit the caisson.
7. A method of protecting against subsea production located beneath a seabed mud surface, using the system of any of claims 1 to 6, comprising the steps of:
step A: sinking the steel cylinder to form a caisson;
and B: drilling a plurality of oil production wells and a plurality of water injection wells;
and C: installing facilities inside the caisson;
step D: connecting pipelines inside the caisson;
step E: the external pipeline of the caisson is connected;
step F: opening a hole on the top cover, installing and backfilling.
8. The method of protecting against subsea production located beneath a seabed mud surface of claim 7,
the installation of the internal facilities of the caisson comprises the following steps:
installing a production manifold in the center of the caisson to form an underwater production manifold, configuring a water injection pipeline and a mixed transmission pipeline, and integrating 3 underwater control modules and 2 underwater routing modules at two ends of the underwater production manifold respectively;
respectively installing the Christmas trees on a plurality of oil production wells and a plurality of water injection wells to respectively form the Christmas trees for water injection and the Christmas trees for production;
arranging an antifouling device in the middle of the underwater production manifold, wherein a probe cabin is arranged in the antifouling device;
two underwater camera devices are respectively arranged near two sides of the underwater production manifold and used for underwater omnibearing visual monitoring;
the umbilical cable underwater terminal and the underwater power distribution unit are arranged near the underwater production manifold.
9. The method for sheltering from subsea production located beneath a seabed mud surface of claim 8, wherein the caisson internal pipe connection comprises in particular the steps of:
each Christmas tree is respectively connected with the underwater production manifold through a jumper pipe;
the power output end of the underwater power distribution unit is connected with the Christmas tree through a power flying line;
the output end of the umbilical cable underwater terminal is connected with 2 underwater routing modules through photoelectric flying lines and is connected with 3 underwater control modules through liquid flying lines;
the 2 underwater routing modules are connected with the 3 underwater control modules through electric flying wires;
each Christmas tree is respectively connected with 3 underwater control modules through electro-hydraulic flying lines.
10. The method of protecting against subsea production located beneath a seabed mud surface of claim 9,
the caisson external pipeline connection specifically comprises the following steps:
the water injection pipeline and the mixed transportation pipeline of the underwater production manifold are respectively butted with an external water injection pipe and an external mixed transportation pipe;
the power input end of the underwater power distribution unit is connected with an external cable;
the input end of the underwater umbilical cable terminal is connected with an external umbilical cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157625.5A CN113898324B (en) | 2021-09-30 | 2021-09-30 | Protection system and method for underwater production below seabed mud surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157625.5A CN113898324B (en) | 2021-09-30 | 2021-09-30 | Protection system and method for underwater production below seabed mud surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113898324A true CN113898324A (en) | 2022-01-07 |
| CN113898324B CN113898324B (en) | 2023-11-14 |
Family
ID=79189699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111157625.5A Active CN113898324B (en) | 2021-09-30 | 2021-09-30 | Protection system and method for underwater production below seabed mud surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113898324B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960759A (en) * | 2022-08-02 | 2022-08-30 | 中海石油（中国）有限公司北京研究中心 | Multifunctional steel-concrete top cover structure of large-diameter steel cylinder |
| CN115059102A (en) * | 2022-06-30 | 2022-09-16 | 中海石油(中国)有限公司 | Installation method of wet steel cofferdam protection structure for oil-gas production under seabed mud surface |
| CN115163921A (en) * | 2022-06-30 | 2022-10-11 | 中海石油(中国)有限公司 | Installation method of steel cylinder protection underwater production system manifold under seabed mud surface |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003596A1 (en) * | 1986-11-11 | 1988-05-19 | Myrmidon Subsea Controls Ltd | Subsea systems and devices |
| WO1991018182A1 (en) * | 1990-05-11 | 1991-11-28 | Jp Kenny Caledonia Ltd. | Production systems for underwater wells |
| WO2009148943A1 (en) * | 2008-06-03 | 2009-12-10 | Shell Oil Company | Offshore drilling and production systems and methods |
| CN108661608A (en) * | 2018-06-07 | 2018-10-16 | 中海油能源发展股份有限公司 | A kind of underwater dry-type extracting device of oil suitable for shallow water oil-gas field development |
| 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 |
| CN212359718U (en) * | 2020-06-30 | 2021-01-15 | 中海油能源发展股份有限公司 | Simple underwater control module suitable for shallow water Christmas tree |
| CN112267846A (en) * | 2020-11-11 | 2021-01-26 | 中海油能源发展股份有限公司 | Wellhead protection device for underwater large-diameter steel cylinder open caisson and implementation method thereof |
| CN112502658A (en) * | 2020-10-19 | 2021-03-16 | 中海石油(中国)有限公司 | Installation method of oil gas production wet type protection structure located under seabed mud surface |
| CN112727408A (en) * | 2020-12-03 | 2021-04-30 | 中海石油(中国)有限公司 | Installation method of oil-gas production dry-type protection structure located under seabed mud surface |
| CN113062708A (en) * | 2021-03-05 | 2021-07-02 | 海洋石油工程股份有限公司 | Underwater central manifold with control system |
| CN113153234A (en) * | 2021-03-26 | 2021-07-23 | 海洋石油工程股份有限公司 | Underwater production device with available ROV (remote operated vehicle) recovery module |
-
2021
- 2021-09-30 CN CN202111157625.5A patent/CN113898324B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003596A1 (en) * | 1986-11-11 | 1988-05-19 | Myrmidon Subsea Controls Ltd | Subsea systems and devices |
| EP0332622A1 (en) * | 1986-11-11 | 1989-09-20 | Myrmidon Subsea Controls Ltd | Subsea systems and devices. |
| WO1991018182A1 (en) * | 1990-05-11 | 1991-11-28 | Jp Kenny Caledonia Ltd. | Production systems for underwater wells |
| WO2009148943A1 (en) * | 2008-06-03 | 2009-12-10 | Shell Oil Company | Offshore drilling and production systems and methods |
| CN102046912A (en) * | 2008-06-03 | 2011-05-04 | 国际壳牌研究有限公司 | Offshore drilling and production systems and methods |
| CN108661608A (en) * | 2018-06-07 | 2018-10-16 | 中海油能源发展股份有限公司 | A kind of underwater dry-type extracting device of oil suitable for shallow water oil-gas field development |
| 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 |
| CN212359718U (en) * | 2020-06-30 | 2021-01-15 | 中海油能源发展股份有限公司 | Simple underwater control module suitable for shallow water Christmas tree |
| CN112502658A (en) * | 2020-10-19 | 2021-03-16 | 中海石油(中国)有限公司 | Installation method of oil gas production wet type protection structure located under seabed mud surface |
| CN112267846A (en) * | 2020-11-11 | 2021-01-26 | 中海油能源发展股份有限公司 | Wellhead protection device for underwater large-diameter steel cylinder open caisson and implementation method thereof |
| CN112727408A (en) * | 2020-12-03 | 2021-04-30 | 中海石油(中国)有限公司 | Installation method of oil-gas production dry-type protection structure located under seabed mud surface |
| CN113062708A (en) * | 2021-03-05 | 2021-07-02 | 海洋石油工程股份有限公司 | Underwater central manifold with control system |
| CN113153234A (en) * | 2021-03-26 | 2021-07-23 | 海洋石油工程股份有限公司 | Underwater production device with available ROV (remote operated vehicle) recovery module |
Non-Patent Citations (2)
| Title |
|---|
| 崔宁;谢锏辉;张西伟;郑申奎;马庆林;薛大智;: "水下生产系统后保护方案研究", 中国新技术新产品, no. 07 * |
| 李清平;朱海山;李新仲;: "深水水下生产技术发展现状与展望", 中国工程科学, no. 02 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059102A (en) * | 2022-06-30 | 2022-09-16 | 中海石油(中国)有限公司 | Installation method of wet steel cofferdam protection structure for oil-gas production under seabed mud surface |
| CN115163921A (en) * | 2022-06-30 | 2022-10-11 | 中海石油(中国)有限公司 | Installation method of steel cylinder protection underwater production system manifold under seabed mud surface |
| CN115163921B (en) * | 2022-06-30 | 2024-03-08 | 中海石油(中国)有限公司 | Method for installing steel cylinder protection underwater production system manifold under seabed mud surface |
| CN114960759A (en) * | 2022-08-02 | 2022-08-30 | 中海石油（中国）有限公司北京研究中心 | Multifunctional steel-concrete top cover structure of large-diameter steel cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113898324B (en) | 2023-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113898324B (en) | Protection system and method for underwater production below seabed mud surface | |
| US5192167A (en) | Subsea production system | |
| EP2596207B1 (en) | Marine well containment system and method | |
| US3777812A (en) | Subsea production system | |
| EP0210964B1 (en) | Dry and/or wet one-atmosphere underwater system | |
| US3516492A (en) | Underwater wellhead connector | |
| CA2362810A1 (en) | Subsea completion apparatus | |
| US20230287767A1 (en) | Universal block platform | |
| CN113153234A (en) | Underwater production device with available ROV (remote operated vehicle) recovery module | |
| US4442900A (en) | Subsea well completion system | |
| CN112832719A (en) | Protection device of integrated underwater equipment and installation method thereof | |
| CN210482418U (en) | Deepwater non-contact burying device | |
| Den Boer et al. | An Integrated Towed Flowline Bundle Production System for Subsea Developments | |
| RU2017933C1 (en) | Subsea wellhead equipment for operation of well cluster | |
| Mason et al. | Seastar: subsea cluster manifold system design and installation | |
| Cochrane | One-Atmosphere Production Systems for Use in Deep Water | |
| Goodfellow | An overview of subsea construction | |
| DeJong et al. | Development and Utilization of a Deepwater Pipeline Connector | |
| Coleman et al. | An improved design of the subsea atmospheric system | |
| Pelleau et al. | Design, Installation, And Connection Of Subsea Lines On East Frigg Field | |
| Chateau et al. | Experimental Subsea Production Station | |
| Hollingsworth et al. | Dry Subsea Systems for Use in Green Canyon Field Development | |
| Freudenreich | Diverless installation of the skuld modular subsea station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |