Seabed mud face anchoring type deepwater guide pipe structure and underwater installing method thereof

A submarine mud and conduit technology, applied in underwater structures, infrastructure engineering, drilling equipment and methods, etc., can solve the problems of high cost, low efficiency, and long occupation of the drill floor, etc., and achieve Save the cost of construction technology, shorten the running length, and improve the effect of drilling time efficiency

Inactive Publication Date: 2017-10-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The "waiting time" for the recovery of the cemented stress makes the running process of the entire deepwater conduit low in efficiency, takes a long time on the rig floor, and leads to high cost of conduit running

Method used

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  • Seabed mud face anchoring type deepwater guide pipe structure and underwater installing method thereof
  • Seabed mud face anchoring type deepwater guide pipe structure and underwater installing method thereof
  • Seabed mud face anchoring type deepwater guide pipe structure and underwater installing method thereof

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Embodiment Construction

[0043]The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.

[0044] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expr...

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Abstract

The invention discloses a seabed mud face anchoring type deepwater guide pipe structure and an underwater installing method thereof. The structure comprises a guide pipe column and a barrel-shaped base, a well opening head is arranged at the upper end of the guide pipe column, a guide pipe shoe is arranged at the lower end of the guide pipe column, the barrel-shaped base is wholly a hollow barrel, the barrel is provided with a top wall and a side wall surrounding the top wall, and the top wall is provided with a hole where the guide pipe column penetrates; a spiral wing plate is arranged on the side wall, and the barrel is further provided with a water discharge valve and a suspension piece, wherein the water discharge valve is communicated with the interior of the barrel, and water in the barrel can be discharged out; and a limiting mechanism used for limiting axial movement and circumferential rotation of the guide pipe column relative to the barrel-shaped base is arranged between the guide pipe column and the barrel-shaped base. By means of the seabed mud face anchoring type deepwater guide pipe structure and the underwater installing method of the seabed mud face anchoring type deepwater guide pipe structure, the well drilling ageing can be improved, and smooth driving can be achieved as for firm-soil deepwater seabeds.

Description

technical field [0001] The invention relates to the technical field of deep-water oil and gas drilling, in particular to a submarine mud surface anchored deep-water conduit structure and an underwater installation method thereof. Background technique [0002] In the offshore engineering oil and gas drilling industry, the technology of jetting into the conduit has become a widely used technology because it can save the time of drilling operations and reduce the risk and cost of drilling. Furthermore, a deep water jet conduit suction technology is specially designed for the development of oil and gas fields in deep water areas, which is a new technology developed on the basis of jet drilling and mud motor applications. When this technology is implemented, the drill bit and the mud motor are run through the conduit into the special tool and the conduit together to form a string of jet running strings, referred to as the drill string. Among them, the main function of the drill ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/52E02D29/09E21B7/20E21B7/18
CPCE02D27/52E02D29/06E21B7/185E21B7/20
Inventor 阚长宾杨进于晓聪刘书杰许鑫朱益王宴滨胡志强李磊孟菊刘爽郭晓俊王凯刘仕
Owner PETROCHINA CO LTD
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