Combined suction anchor and seabed injecting method thereof

A suction anchor and combined technology, used in construction, infrastructure engineering and other directions, can solve the problems of complex structure and difficulty in providing stable support for suction anchors, and achieve the effect of improving stability

Pending Publication Date: 2020-01-14
GUANGZHOU MARINE GEOLOGICAL SURVEY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the suction anchors used as the stable base of the seabed wellhead adopt a single-tube structure. Due to the complex topographic structure of the seabed, it is difficult for the suction anchor with a single-tube structure to provide sufficient stab

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  • Combined suction anchor and seabed injecting method thereof
  • Combined suction anchor and seabed injecting method thereof
  • Combined suction anchor and seabed injecting method thereof

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Embodiment Construction

[0036] The technical solution of the present invention will be further described below in conjunction with the drawings and preferred embodiments.

[0037] See figure 1 The combined suction anchor of the present invention includes several sets of vertically arranged cylinders 1 and base pipes 2; the top of the cylinder 1 is closed and the lower end is open, and the top of the cylinder is provided with an air outlet 1-1 and a water suction port 1. -2. The suction port 1-2 is connected to the suction pump in the hydraulic control system of the suction anchor penetrating equipment through a pipeline, and the opening and closing actions of the air outlet 1-1 and the water suction port 1-2 in each group of cylinder 1 Independently controlled by the hydraulic control system, the adjacent two groups of cylinders 1 are connected by welding through the outer ribs 4, and the cylinder 1 and the outer ribs 4 are enclosed into a ring structure with open upper and lower ends; the base pipe 2 A...

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Abstract

The invention discloses a combined suction anchor and a seabed injecting method thereof, and belongs to the technical field of seabed drilling. The combined suction anchor comprises multiple sets of cylinders vertically arranged, and base pipes; the top ends of the cylinders are closed, and the lower ends are opened; exhaust ports and water sucking ports are formed in the top ends of the cylinders; the water sucking ports are connected with a water sucking pump in a hydraulic control system of suction anchor injecting equipment through pipelines; the opening and closing actions of the exhaustports and the water sucking ports in each set of the cylinders are independently controlled by the hydraulic control system; the two adjacent sets of the cylinders are connected through outer side ribplates in a welding mode; annular structures opened at the upper and lower ends are surrounded by the cylinders and the outer side rib plates; the base pipes are arranged in the cylinders and/or theannular structures; and the two adjacent sets of the base pipes and the base pipes, the side walls of the cylinders and the outer side rib plates are connected through inner side rib plates in a welding mode. Through innovative design of the combined suction anchor and the seabed injecting method thereof, the purpose of improving the deep sea well mouth stability is achieved.

Description

Technical field [0001] The invention relates to a suction anchor and its seabed penetration method, in particular to a combined suction anchor and its seabed penetration method. Background technique [0002] In subsea drilling engineering, suction anchor is a subsea pile foundation developed to solve the problem of subsea soft foundation bearing and enhance wellhead stability. Its specific structure is: a cylinder with a closed top and an open lower end is provided on the outside. The top of the body is provided with a water suction port, which is connected with the suction pump through a pipeline. When the suction anchor cylinder penetrates into the seabed, the suction pump can be used to draw seawater out of the cylinder, and the pressure difference between the cylinder body and the outside makes it penetrate into the seabed mud layer. With the development of marine engineering technology, the above-mentioned cylindrical suction anchors are widely used in offshore wind power f...

Claims

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Application Information

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IPC IPC(8): E02D27/52
CPCE02D27/525
Inventor 秦绪文宋刚陆敬安谢文卫寇贝贝刘春生邵玉涛牛庆磊刘晓林崔淑英
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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