CN113818487A - Integral installation method for shallow water steel cylinder underwater platform - Google Patents
Integral installation method for shallow water steel cylinder underwater platform Download PDFInfo
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- CN113818487A CN113818487A CN202110802690.2A CN202110802690A CN113818487A CN 113818487 A CN113818487 A CN 113818487A CN 202110802690 A CN202110802690 A CN 202110802690A CN 113818487 A CN113818487 A CN 113818487A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 145
- 239000010959 steel Substances 0.000 title claims abstract description 145
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000009434 installation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000035515 penetration Effects 0.000 claims abstract description 25
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 241000191291 Abies alba Species 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 27
- 238000007667 floating Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 230000007613 environmental effect Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 13
- 239000003921 oil Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 16
- 241001415961 Gaviidae Species 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000545 stagnation point adsorption reflectometry Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/06—Constructions, or methods of constructing, in water
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses an integral installation method of a shallow water steel cylinder underwater platform, which comprises the steps of S1, adaptively designing the shallow water steel cylinder underwater platform according to soil information and marine environment conditions of a specific oil field area; s2, pre-digging a foundation pit on the installation site; s3, integrally assembling and integrally hoisting the shallow water steel cylinder underwater platform into water on land, and installing the shallow water steel cylinder underwater platform in place at a preset position; s4, performing suction penetration on the shallow water round steel cylinder underwater platform, and performing suction penetration on softened soil matched with suction pump equipment to enable the top of the shallow water round steel cylinder underwater platform to be flush with the seabed; s5, removing a connecting flange and a fixing facility of a top cover and a main body section of the shallow water steel cylinder underwater platform; s6, hardening a mud surface, installing a caisson, and installing a drilling well and a Christmas tree; and S7, carrying out secondary installation on the top cover of the underwater platform of the shallow water steel cylinder. The invention adopts the modes of integral assembly, integral transportation and integral installation, has high operability, greatly reduces the construction cost and the operation risk, and improves the construction efficiency and the reliability.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to an integral installation method of a shallow water steel cylinder underwater platform.
Background
At present, ocean oil and gas development in China has steadily progressed from a shallow water region of several meters to a deep water ocean of kilometer level, the technology is mature day by day, and a large development space is provided for a Bohai sea limited region and a navigation region with large reserves.
An offshore oil (gas) field production platform (offshore platform for short) is taken as one of offshore engineering facilities, is an offshore drilling and production facility for offshore oil and gas development, has the main functions of oil and gas extraction, pretreatment, oil and gas output and the like, and comprises an upper module and a supporting structure (such as a fixed structure, a floating structure and the like) which comprises a guide pipe frame, a gravity base supporting structure and a compliant tower type supporting structure; floating structures include FPSO hull structures, SEMI-submersible support structures (e.g., TLP, SEMI, SPAR), and the like. With the development of ocean development and ocean engineering technology, offshore oil (gas) field production platform support structures have various forms of ocean structures, and therefore, offshore oil (gas) field production platforms with structures as main characteristics have appeared.
The current ocean drilling and production platform installation technology, no matter which mode, all needs to be at seabed installation structure thing, and need extend the structure thing to the sea level on, carry out processing, the gathering of oil gas.
However, at present, a large amount of oil and gas reserves in the Bohai sea are in limited areas, such as shallow water navigation areas and military control areas, and the requirements of forbidden navigation obstacles in the shallow water navigation areas and the military control areas cannot be met by adopting the various oil and gas development modes, so that a large amount of oil and gas fields on a navigation channel and the military control areas cannot be exploited; the construction cost and the operation risk are improved, the construction efficiency is reduced, and the reliability is low.
Disclosure of Invention
The invention aims to solve the technical problem of how to provide an integral installation method of a shallow water steel cylinder underwater platform, so as to solve the problems that the existing shallow water steel cylinder underwater platform is troublesome to install and poor in reliability, so that the construction cost is improved, and the construction efficiency is reduced.
In order to solve the technical problem, the invention provides a method for integrally installing a shallow water steel cylinder underwater platform, which comprises the step S1 of adaptively designing the shallow water steel cylinder underwater platform according to soil information and marine environmental conditions of a specific oil field area; s2, pre-digging a foundation pit on an installation site to meet the installation requirement of the shallow water steel cylinder underwater platform; s3, integrally assembling the shallow water steel cylinder underwater platform on land, integrally transporting the shallow water steel cylinder underwater platform to an oilfield field through a self-building wharf, pre-installing suction pump equipment and stirring equipment on a top cover of the shallow water steel cylinder underwater platform, integrally hoisting the shallow water steel cylinder underwater platform into water, and installing the shallow water steel cylinder underwater platform in place at a preset position; s4, starting the suction pump equipment, enabling the shallow water steel cylinder underwater platform to be subjected to suction penetration, starting the stirring equipment, enabling softened soil to be matched with the suction pump equipment to be subjected to suction penetration until the mud penetration depth is designed, and enabling the top of the shallow water steel cylinder underwater platform to be flush with the seabed; s5, detaching a connecting flange and a fixing facility of a top cover and a main body section of the shallow steel cylinder underwater platform, lifting the top cover of the round steel cylinder underwater platform out of water, placing the top cover on a deck of a main operation ship and temporarily fixing the top cover; s6, hardening a mud surface, installing a caisson, and installing a drilling well and a Christmas tree; and S7, carrying out secondary installation on the top cover of the shallow water steel cylinder underwater platform.
Further, in S2, a trencher and a special dredging facility are used to pre-dig a deep foundation pit at a predetermined position to form a deep foundation pit with a certain size to meet the installation requirement of the shallow steel cylinder underwater platform.
Further, in S3, after the shallow steel cylinder underwater platform is transported to an installation site, the suction pump device and the stirring device are installed at a design position of the top cover of the shallow steel cylinder horizontal platform by an on-site floating crane and fixed, the floating crane pre-hangs the underwater platform hoisting rigging, the underwater platform is integrally hoisted into water, and the underwater platform is installed at the underwater design position through positioning and guiding.
Further, in S4, two sets of the suction pump devices are started to start suction penetration of the underwater platform of the steel cylinder, the stirring device mounted on the top cover of the underwater platform of the shallow steel cylinder is started to cooperate with the suction pump devices to perform penetration of the underwater platform of the shallow steel cylinder, and the perpendicularity in the penetration process of the underwater platform of the shallow steel cylinder is controlled by adjusting the flow and pressure of the suction pump devices.
Further, in S5, after the shallow steel cylinder underwater platform is penetrated to a predetermined depth, a diver enters water to remove all flange connections of the top cover and the main body section of the shallow steel cylinder underwater platform, so that the top cover and the main body section are in a completely separated state, a floating crane lifts the top cover through a hoisting rigging to discharge water, and temporarily places the top cover on a deck of a transportation barge, and removes the suction pump device and the stirring device on the top cover.
Further, in S6, the inside of the steel cylinder is dug to make the mud surface reach a predetermined position, sand and stone are laid inside the steel cylinder by a floating crane to harden the bottom inside the steel cylinder, and the underwater production facility is installed according to the oil field design.
Further, in S7, the top cover after the detached suction pump device and the stirring device is lifted by a floating crane, and the upper end of the body section mounted to the shallow steel cylinder underwater platform is guided by a diver and a positioning device to be engaged with the body section by its own weight.
The invention has the technical effects that: the shallow water steel cylinder underwater platform is adaptively designed according to soil data and marine environmental conditions of a specific oil field area; pre-digging treatment of a foundation pit on an installation site; integrally assembling the shallow water steel cylinder underwater platform on land, starting the suction pump equipment, enabling the shallow water steel cylinder underwater platform to be penetrated by suction force, starting the stirring equipment, and enabling softened soil to be matched with the suction pump equipment to be penetrated by suction force until the depth of mud penetration is designed, so that the top of the shallow water steel cylinder underwater platform is kept flush with the seabed; detaching a connecting flange and a fixing facility of a top cover and a main body section of the shallow water steel cylinder underwater platform, lifting the top cover of the round steel cylinder underwater platform out of water, placing the top cover on a deck of a main operation ship and temporarily fixing the top cover and the main body section; hardening a mud surface, installing a caisson, drilling and installing a Christmas tree; carrying out secondary installation on the top cover of the shallow water steel cylinder underwater platform; the automatic drilling and production facilities are all arranged inside the shallow water steel cylinder underwater platform, and the collected crude oil and natural gas are directly conveyed to the processing terminal through the submarine pipeline without structures higher than the seabed, so that the navigation area and the military area are not affected. The operation is simple, the realization is easy, and the structural size of the underwater platform can be adjusted according to the output of the oil and gas field; the scheme ensures the production of ocean oil gas and meets the requirement of navigation safety, and a large number of oil fields in a navigation area and a military control area have exploitation conditions and have huge application prospect; the mode of whole equipment, whole transportation, integral erection is adopted, maneuverability is high, construction cost and operation risk are greatly reduced, and construction efficiency and reliability are improved.
Drawings
Fig. 1 is a schematic flow chart of an integral installation method of a shallow water steel cylinder underwater platform provided by an embodiment of the invention.
Fig. 2 is a schematic structural diagram of an integrated shallow steel cylinder underwater platform provided by the embodiment of the invention.
Fig. 3 is a schematic structural diagram of integral hoisting of the integrated round steel cylinder horizontal platform provided by the embodiment of the invention.
Fig. 4 is a schematic structural diagram of hoisting of a top cover of the round steel cylinder underwater platform provided by the embodiment of the invention.
Fig. 5 is a schematic structural diagram of a main body segment of a round steel cylinder underwater platform provided by an embodiment of the invention.
Fig. 6 is a front view of an integrated steel cylinder underwater platform provided by an embodiment of the present invention.
Fig. 7 is a schematic structural view of an integrated steel cylinder in place according to an embodiment of the present invention.
In the figure, 1, a floating crane hook, 2, a sling, 3, a top cover, 4, a main body section, 5, a hoisting point, 6, a suction pump installation preformed hole, 7, a stirring equipment installation preformed hole, 8, a top cover bolt hole, 9, a main body section bolt hole, 10, a seabed, 11 and a horizontal plane.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
The embodiment of the invention provides a method for integrally installing a shallow water steel cylinder underwater platform, which is shown in the attached drawings 1-7 and comprises the following steps.
S1, designing the shallow water steel cylinder underwater platform adaptively according to the soil data and the marine environment conditions of the specific oil field area.
Specifically, the underwater platform of the shallow water steel cylinder comprises a top cover 3 and a main body section 4, wherein the top cover 3 and the main body section 4 are fixedly connected through a top cover bolt hole 8 and a main body section bolt hole 9, so that the top cover 3 and the main body section 4 form the underwater platform which can be integrally installed. Wherein, the top cover 3 is provided with a lifting point 5, which is convenient for integral lifting of the underwater platform of the shallow water steel cylinder and temporary dismantling of the top cover 3. Set up suction pump installation preformed hole 6 and agitated vessel installation preformed hole 7 on top cap 3, the purpose is for installing suction pump and agitated vessel, adapts to shallow water steel drum platform suction under water and penetrates and the stirring.
And S2, pre-digging a foundation pit on an installation site, and meeting the installation requirement of the shallow water steel cylinder underwater platform.
Specifically, the foundation pit is pre-dug in an oil and gas field development site to form a deep foundation pit with a certain scale, so that the installation of the shallow water steel cylinder underwater platform is met, the construction amount of offshore installation site construction is reduced, and the installation requirement of the shallow water underwater platform is met more effectively.
S3, integrally assembling the shallow water steel cylinder underwater platform on land, integrally transporting the shallow water steel cylinder underwater platform to an oilfield field through a self-building wharf, pre-installing a suction pump device and a stirring device on a top cover 3 of the shallow water steel cylinder underwater platform, integrally hoisting the shallow water steel cylinder underwater platform into water, and installing the shallow water steel cylinder underwater platform in place at a preset position.
Specifically, the underwater platform of the shallow water steel cylinder is integrally assembled on the target building wharf to form the integral underwater platform of the shallow water steel cylinder, so that the transportation is facilitated. Integrally transporting the integrally assembled shallow water steel cylinder underwater platform to an oilfield field through a construction wharf, respectively pre-installing a suction pump and a stirring device in a suction pump installation preformed hole 6 and a stirring device installation preformed hole 7 on a platform steel cylinder top cover 3, integrally hoisting the shallow water steel cylinder underwater platform into water by using a floating crane hook 1 and a sling 2, and installing the shallow water steel cylinder underwater platform at a preset position according to design requirements.
S4, starting the suction pump equipment, enabling the shallow water steel cylinder underwater platform to be subjected to suction penetration, starting the stirring equipment, softening soil to be matched with the suction pump equipment to be subjected to suction penetration until the mud penetration depth is designed, and enabling the top of the shallow water steel cylinder underwater platform to be parallel to the seabed 10.
Specifically, the shallow water steel cylinder underwater platform is integrally hoisted in place, after the shallow water steel cylinder underwater platform freely enters mud to a certain depth, the floating crane hook 1 is loosened, the suction pump equipment installed on the suction pump installation preformed hole 6 is started, suction penetration of the shallow water steel cylinder underwater platform is started, the perpendicularity of the steel cylinder is controlled by using the pressure and the flow of the suction pump equipment, and the installation requirement is met. Meanwhile, aiming at the hard seabed condition of the soil geology, the stirring equipment arranged on the stirring equipment installation preformed hole 7 is started, the suction force of the round steel cylinder is matched for penetration until the mud penetration depth is designed, and at the moment, the top cover 3 of the underwater platform of the shallow water steel cylinder is parallel and level to the seabed 10, so that the passing safety of a navigation channel is not influenced. Shallow steel cylinders are installed on the seabed 10, which seabed 10 is located below a water level 11.
S5, detaching the connecting flange and the fixing facilities of the top cover 3 and the main body section 4 of the shallow water steel cylinder underwater platform, lifting the top cover 3 of the shallow water steel cylinder underwater platform out of water, placing the shallow water steel cylinder underwater platform on a deck of a main operation ship and temporarily fixing the shallow water steel cylinder underwater platform.
Specifically, the diver enters the water to remove a plurality of connecting flanges and fixing facilities connecting the top cover bolt holes 8 and the body section bolt holes 9, so that the top cover 3 and the body section 4 are in a completely separated state. After the diver leaves water, the steel cylinder top cover 3 is lifted by using the floating crane hook 1 and the sling 2, and the discharged water is placed on a deck of the main operation ship and is temporarily fixed.
S6, hardening a mud surface, installing a caisson, and installing a drilling well and a Christmas tree.
Specifically, a diver guides the floating crane hook 1 to dig mud in the steel cylinder to form a hollow structure, lays a sand and stone bedding to form a hardened mud surface, and performs caisson installation, drilling and Christmas tree installation to complete the installation of internal facilities of the underwater platform.
And S7, carrying out secondary installation on the top cover of the shallow water steel cylinder underwater platform.
Specifically, a steel cylinder underwater platform top cover 3 with the suction pump equipment and the stirring equipment removed is lifted by using a floating crane lifting hook 1, the steel cylinder underwater platform top cover is guided by a diver and positioning equipment to be installed to the upper end of a main body section 4 of the underwater production platform, the steel cylinder underwater platform is matched with the main body section 4 by dead weight, and the installation of the shallow steel cylinder underwater platform is completed.
In the embodiment of the present invention, in S2, a trencher and a special dredging facility are used to pre-dig a deep foundation pit at a predetermined position, so as to form a deep foundation pit with a certain scale, so as to meet the installation requirement of the shallow steel cylinder underwater platform.
In the embodiment of the present invention, in S3, after the shallow steel cylinder underwater platform is transported to an installation site, the suction pump device and the stirring device are installed and fixed to a design position of the top cover 3 of the shallow steel cylinder horizontal platform by an on-site floating crane, the floating crane pre-hangs an underwater platform hoisting rigging, integrally hoists the underwater platform into water, and the underwater platform is installed to an underwater design position through positioning and guiding.
In the embodiment of the present invention, in S4, two sets of the suction pump devices are started to start suction penetration of the shallow water steel cylinder underwater platform, the stirring device mounted on the top cover 3 of the shallow water steel cylinder underwater platform is started to cooperate with the suction pump devices to perform penetration of the shallow water steel cylinder underwater platform, and the flow and the pressure of the suction pump devices are adjusted to control the perpendicularity of the shallow water steel cylinder underwater platform in the penetration process.
In the embodiment of the present invention, in S5, after the shallow steel cylinder underwater platform is penetrated to a predetermined depth, a diver enters water to remove all flange connections of the top cover 3 and the main body section 4 of the shallow steel cylinder underwater platform, so that the top cover 3 and the main body section 4 are in a completely separated state, a floating crane lifts the top cover 3 out of water through a hoisting rigging, and temporarily places the top cover on a deck of a transportation barge, and removes the suction pump device and the stirring device on the top cover 3.
In the present embodiment, in S6, the inside of the steel cylinder is dug to reach a predetermined position, sand and stone are laid inside the steel cylinder by a floating crane to harden the bottom inside the steel cylinder, and a subsea production facility is installed according to the oilfield design.
In the present embodiment, in S7, the top cover 3 after the removed suction pump device and the stirring device is lifted by a floating crane, and the upper end of the body section 4 mounted to the shallow steel cylinder underwater platform is guided by a diver and a positioning device to be engaged with the body section 4 by its own weight.
According to the embodiment of the invention, a shallow water steel cylinder underwater platform is adaptively designed according to soil data and marine environmental conditions of a specific oil field area; pre-digging treatment of a foundation pit on an installation site; integrally assembling the shallow water steel cylinder underwater platform on land, starting the suction pump equipment, enabling the shallow water steel cylinder underwater platform to be penetrated by suction force, starting the stirring equipment, and enabling softened soil to be matched with the suction pump equipment to be penetrated by suction force until the depth of mud penetration is designed, so that the top of the shallow water steel cylinder underwater platform is kept flush with the seabed; detaching a connecting flange and a fixing facility of a top cover and a main body section of the shallow water steel cylinder underwater platform, lifting the top cover of the round steel cylinder underwater platform out of water, placing the top cover on a deck of a main operation ship and temporarily fixing the top cover and the main body section; hardening a mud surface, installing a caisson, drilling and installing a Christmas tree; carrying out secondary installation on the top cover of the shallow water steel cylinder underwater platform; the automatic drilling and production facilities are all arranged inside the shallow water steel cylinder underwater platform, and the collected crude oil and natural gas are directly conveyed to the processing terminal through the submarine pipeline without structures higher than the seabed, so that the navigation area and the military area are not affected. The operation is simple, the realization is easy, and the structural size of the underwater platform can be adjusted according to the output of the oil and gas field; the scheme ensures the production of ocean oil gas and meets the requirement of navigation safety, and a large number of oil fields in a navigation area and a military control area have exploitation conditions and have huge application prospect; the mode of whole equipment, whole transportation, integral erection is adopted, maneuverability is high, construction cost and operation risk are greatly reduced, and construction efficiency and reliability are improved.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The integral installation method of the underwater platform of the shallow water steel cylinder is characterized by comprising the following steps of: comprises the steps of
S1, adaptively designing a shallow water steel cylinder underwater platform according to soil data and marine environmental conditions of a specific oil field area;
s2, pre-digging a foundation pit on an installation site to meet the installation requirement of the shallow water steel cylinder underwater platform;
s3, integrally assembling the shallow water steel cylinder underwater platform on land, integrally transporting the shallow water steel cylinder underwater platform to an oilfield field through a self-building wharf, pre-installing suction pump equipment and stirring equipment on a top cover of the shallow water steel cylinder underwater platform, integrally hoisting the shallow water steel cylinder underwater platform into water, and installing the shallow water steel cylinder underwater platform in place at a preset position;
s4, starting the suction pump equipment, enabling the shallow water steel cylinder underwater platform to be subjected to suction penetration, starting the stirring equipment, enabling softened soil to be matched with the suction pump equipment to be subjected to suction penetration until the mud penetration depth is designed, and enabling the top of the shallow water steel cylinder underwater platform to be flush with the seabed;
s5, detaching a connecting flange and a fixing facility of the top cover and the main body section of the shallow water steel cylinder underwater platform, lifting the top cover of the shallow water steel cylinder underwater platform to discharge water, placing the top cover on a deck of a main operation ship and temporarily fixing the top cover;
s6, hardening a mud surface, installing a caisson, and installing a drilling well and a Christmas tree;
and S7, carrying out secondary installation on the top cover of the shallow water steel cylinder underwater platform.
2. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: in the step S2, a trencher and a special dredging facility are used to pre-dig a deep foundation pit at a predetermined position to form a deep foundation pit with a certain scale, so as to meet the installation requirement of the shallow water steel cylinder underwater platform.
3. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: in S3, after the shallow steel cylinder underwater platform is transported to an installation site, the suction pump device and the stirring device are installed at the design position of the top cover of the shallow steel cylinder horizontal platform by a site floating crane and fixed, the floating crane pre-hangs an underwater platform hoisting rigging, the whole underwater platform is hoisted into water, and the underwater platform is installed to the underwater design position through positioning and guiding.
4. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: and in the step S4, starting two pieces of suction pump equipment, starting suction penetration of the shallow water steel cylinder underwater platform, starting the stirring equipment arranged on the top cover of the shallow water steel cylinder underwater platform, matching the suction pump equipment to perform penetration of the shallow water steel cylinder underwater platform, and controlling perpendicularity in the penetration process of the shallow water steel cylinder underwater platform by adjusting the flow and pressure of the suction pump equipment.
5. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: in S5, after the shallow steel cylinder underwater platform penetrates to a predetermined depth, a diver enters water to detach all the flanges of the top cover and the main body section of the shallow steel cylinder underwater platform, so that the top cover and the main body section are in a completely separated state, a floating crane lifts the top cover through a hoisting rigging to discharge water, and temporarily places the top cover on a deck of a transportation barge, and detaches the suction pump equipment and the stirring equipment on the top cover.
6. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: and S6, continuing to excavate the inside of the steel cylinder to enable the mud surface to reach a preset position, paving sand and stones inside the steel cylinder through the floating crane in a matching mode to harden the bottom inside the steel cylinder, and installing an underwater production facility according to the oil field design.
7. The method for integrally installing the underwater platform of the shallow steel cylinder of claim 1, wherein: in S7, the top cover behind the removed suction pump device and the stirring device is lifted by a floating crane, guided by a diver and a positioning device and mounted to the upper end of the main body section of the shallow steel cylinder underwater platform, and engaged with the main body section by its own weight.
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| JP2001317060A (en) * | 2000-05-09 | 2001-11-16 | Ohbayashi Corp | Construction method for underwater foundation |
| US20150299974A1 (en) * | 2012-12-07 | 2015-10-22 | Adel H. Younan | Suction Caisson with Weakened Section and Method for Installing the Same |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
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| 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 |
| CN112796340A (en) * | 2021-01-25 | 2021-05-14 | 深洋海工技术(深圳)有限公司 | Novel ocean suction pile and construction method thereof |
| CN112832719A (en) * | 2020-12-24 | 2021-05-25 | 海洋石油工程股份有限公司 | Protection device of integrated underwater equipment and installation method thereof |
-
2021
- 2021-07-15 CN CN202110802690.2A patent/CN113818487A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001317060A (en) * | 2000-05-09 | 2001-11-16 | Ohbayashi Corp | Construction method for underwater foundation |
| US20150299974A1 (en) * | 2012-12-07 | 2015-10-22 | Adel H. Younan | Suction Caisson with Weakened Section and Method for Installing the Same |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN112227330A (en) * | 2020-09-18 | 2021-01-15 | 海洋石油工程股份有限公司 | Method for establishing silo type seabed platform |
| 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 |
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Application publication date: 20211221 |
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