Method for fixing underwater production manifold in steel cylinder below seabed mud surface through fixing pins
A technology for producing manifolds and fixing methods, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems that underwater production manifolds cannot be adjusted, and achieve convenient construction, low cost, and The effect of small installation difficulty
Pending Publication Date: 2022-01-25
CNOOC TIANJIN BRANCH +1
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Problems solved by technology
[0003] The purpose of the present invention is to provide a fixed pin fixing method for the underwater production manifold located in the steel cylinder under the mud surface of the seabed, to solve the problem that the underwater production manifold cannot be fixed according to the The problem of adjusting the actual position of the sink
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Embodiment 1
[0026] Embodiment 1 provides a fixed pin fixing method for an underwater production manifold located in a steel cylinder under the mud surface of the seabed. The fixing pin fixing method includes the following steps:
[0027] Step S1: Construction of the load-bearing foundation of the subsea production manifold
[0028] Concrete is poured into the bottom of the steel cylinder 1 and leveled to form a concrete foundation 100. The concrete foundation is used as the bearing foundation of the underwater production manifold 2, such as figure 1 shown.
[0029] In order to ensure the levelness of the installation of the underwater production manifold 2, leveling is performed after pouring concrete.
[0030] Step S2: Set reserved holes
[0031] The bottom of the production manifold has an anti-settling plate, and at least four reserved holes 3 are preset on the anti-settling plate of the production manifold;
[0032] Specifically, the inner diameter of the reserved hole 3 is slightl...
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The invention discloses a method for fixing an underwater production manifold in a steel cylinder below a seabed mud surface through fixing pins. The method for fixing the underwater production manifold in the steel cylinder below the seabed mud surface through the fixing pins comprises the following steps: construction of a bearing foundation of the underwater production manifold is carried out; reserved holes are formed; the production manifold is placed into water and is in place; a mounting hole of the fixing pin is chiseled; a fixing pin is mounted; and other steps are carried out. According to the method for fixing the underwater production manifold in the steel cylinder below the seabed mud surface through the fixing pins, after the underwater production manifold is in place, the holes are formed in the concrete foundation bearing the underwater production manifold, the fixing pins are installed on the concrete foundation, so that the underwater production manifold can be fixed to the concrete foundation, and therefore the method is not limited by the in-place position of the underwater production manifold. The method for fixing the underwater production manifold in the steel cylinder below the seabed mud surface through the fixing pins disclosed by the invention is convenient to construct and low in manufacturing cost, can meet the fixing requirement of the underwater production manifold in the steel cylinder below the seabed mud surface, is an economical and efficient fixing method, is suitable for fixing the production manifold in the underwater steel cylinder in a navigable area, and has a wide application prospect in oil and gas development engineering in the navigable area of the Bohai Sea.
Description
technical field [0001] The invention relates to the field of marine engineering development, in particular to a method for fixing a fixed pin for an underwater production manifold located in a steel cylinder under the mud surface of the seabed. Background technique [0002] In the navigable area of the Bohai Sea, in order to ensure the safety of navigation, the transportation department does not allow the establishment of marine engineering development facilities higher than the mud surface of the seabed in this area. Therefore, the development facilities need to be installed below the mud surface and equipped with steel cylinder protection facilities for underwater production manifolds to avoid collisions with ships on the channel, reduce interference to the channel, and realize the protection of oil and gas resources in the navigable area. develop. When steel cylinder protection facilities are used, due to the limitation of installation accuracy, the actual position of ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16L1/16F16L1/20E02D27/52E02D15/06
CPCF16L1/16F16L1/201E02D27/525E02D15/06
Inventor 沈晓鹏董德龙吴非栾英森吕航申辰李书兆李伟
Owner CNOOC TIANJIN BRANCH