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Method for increasing well slots without stopping production on offshore petroleum platform

An offshore oil and platform technology, which is applied in the field of increasing wells on offshore oil platforms and increasing wells without non-stop production on offshore oil platforms, can solve the problems of not being able to maximize economic benefits, improve production economic benefits, speed up construction, The effect of simplifying the structure

Inactive Publication Date: 2013-03-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, above-mentioned two kinds of methods of increasing well groove all have obvious disadvantages, can not realize the maximization of economic benefit

Method used

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  • Method for increasing well slots without stopping production on offshore petroleum platform
  • Method for increasing well slots without stopping production on offshore petroleum platform
  • Method for increasing well slots without stopping production on offshore petroleum platform

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Embodiment Construction

[0032] In order to simplify the installation process at sea, the main components such as the underwater base plate 3, the steel pile sleeve, the guide structure 5, and the connecting structure 7 are respectively prefabricated and assembled on land to form an integral structure. These parts are shipped to sea for installation.

[0033] Such as Figure 3-Figure 6 As shown, the underwater base plate 3 is prefabricated and assembled by steel pipes to form an integral frame structure. A steel pile guide 12 is installed in the middle of the frame structure, and a tentacle 13 is installed on the side by welding or bolting. The tentacle 13 is made of steel pipe. Plane frame.

[0034] The connecting structure 7 is prefabricated and assembled from steel pipes by welding to form an integral flat sheet structure.

[0035] Such as Figure 1-Figure 9 As shown, the structure installation of the present invention adopts the following steps:

[0036] (1) Install the underwater base plate 3: Taking t...

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Abstract

The invention provides a method for increasing well slots without stopping production on an offshore petroleum platform, comprising the following steps: (1) installing a subsea template (3) at one side of the bottom part of the original platform jacket (2); (2) removing a craw (13) on the subsea template (3); (3) inserting a steel pile (4) into a steel pile guide structure (12) of the subsea template (3), and then driving the steel pile (4) into the guide structure; (4) covering and fixing a steel pile sleeve (11) on the steel pile (4); (5) inserting a conductor tube (6) into a conductor tube guide structure (14), driving the conductor tube (6) into the guide structure and fixing the conductor tube with the guide structure together; (6) installing a connection structure (7) between the upper part of the platform jacket (2) and the conductor tube (6) of a new structure to integrate the original platform with a newly added well slot structure; and (7) installing a deck (8) on the original platform module (1), wherein, the deck (8) is positioned above the conductor tube (6). The method of the invention can greatly lower offshore operation time and construction cost, avoid shutdown during the offshore construction period and improve economic benefit for production.

Description

technical field [0001] The invention relates to a method for adding well slots to offshore oil platforms, in particular to a method for adding well slots to offshore oil platforms without stopping production. It belongs to the field of offshore oil engineering. Background technique [0002] With the increase of the production life of offshore oil platforms, the platform will face the problem of production reduction in the later stage of production. In order to make up for the insufficient production capacity, it is necessary to increase the number of production wells on the platform. However, the number of reserved well slots on some platforms is insufficient, so it is necessary to add new well slots to the old platforms to achieve the purpose of increasing production. There are mainly two ways to increase the well groove: [0003] The first method is: engineering construction needs to be carried out next to the original offshore old platform, and a new small platform is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B15/02
Inventor 叶永坤赵阔刘海生刘玉玺王忠畅张艳芳吴朝晖段艳丽张媛
Owner CHINA NAT OFFSHORE OIL CORP
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