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Deep-water composite conduit tripping-in tubular column and underwater mounting method thereof

A conduit and deep water technology, applied in drilling equipment and methods, earthwork drilling, drilling equipment, etc., can solve the problems of long occupancy time on the drilling floor, low running efficiency, high cost of running conduit, etc., so as to improve the drilling efficiency. , The effect of shortening the running length and saving the cost of construction technology

Inactive Publication Date: 2017-09-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Deep-water composite conduit tripping-in tubular column and underwater mounting method thereof
  • Deep-water composite conduit tripping-in tubular column and underwater mounting method thereof
  • Deep-water composite conduit tripping-in tubular column and underwater mounting method thereof

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Embodiment Construction

[0039] The technical solutions of the present invention will be described in detail below in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not 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.

[0040] 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 a central element may also exist. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative...

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Abstract

The invention discloses a deep-water composite conduit tripping-in tubular column and an underwater mounting method thereof. The underwater mounting method comprises the steps that after the deep-water composite conduit tripping-in tubular column is connected with a drilling platform, a drain valve is opened; the deep-water composite conduit tripping-in tubular column is delivered to the seabed, and when the lower end of a conduit column body makes contact with the seabed mud surface, a jetting tripping-in procedure is started; when the jetting tripping-in procedure is conducted with maintained predetermined hydraulic jet parameters, the hook hanging load is gradually decreased, and thus part of tubular column loads are applied to a bucket foundation; meanwhile, water pumping power in the bucket foundation is increased, and pressing-in of the bucket foundation is achieved while jetting tripping-in of the deep-water composite conduit tripping-in tubular column is achieved; and when complete tripping-in of the bucket foundation is achieved, the drain valve is closed, and tripping-in of the deep-water composite conduit tripping-in tubular column is achieved. According to the deep-water composite conduit tripping-in tubular column and the underwater mounting method thereof, the waiting time of stress recovery of the deep-water composite conduit tripping-in tubular column can be omitted, and the tripping-in length is reduced.

Description

Technical field [0001] The invention relates to the technical field of deep-water oil and gas drilling, in particular to a deep-water composite pipe running into a pipe string and an underwater installation method thereof. Background technique [0002] In the offshore oil and gas drilling industry, the jet-in-pipe technology has become a widely used technology because it can save the time of drilling operations and can reduce the risk and cost of drilling. Furthermore, a deep-water jet-pipe suction technology is specially designed for oil and gas field development in deep-water areas, which is a new technology developed on the basis of jet drilling and mud motor applications. In the implementation of this technology, the drill bit and the mud motor are run through a pipe through a special tool and the pipe together to form a jet run string, referred to as a drill string. Among them, the main function of the drill bit is to break the soil in front of the tube shoe, and then pump ...

Claims

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Application Information

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IPC IPC(8): E21B7/20E21B7/18
CPCE21B7/20E21B7/185
Inventor 阚长宾杨进周建良刘书杰刘正礼王宴滨许鑫徐国贤王贤斯郭晓俊
Owner PETROCHINA CO LTD
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