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Underwater dry-type oil production device suitable for development of shallow water oil-gas field

A technology for oil production equipment and oil and gas fields, which is applied in the development of fluids, earthwork drilling, wellbore/well components, etc., can solve the problem of high construction costs, reduce investment, reduce investment and offshore construction costs, and meet the effect of repeated use

Pending Publication Date: 2018-10-16
CNOOC ENERGY TECH & SERVICES
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In addition, the installation and commissioning of conventional underwater production system equipment requires underwater robots to complete underwater operations, and the construction cost is high

Method used

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  • Underwater dry-type oil production device suitable for development of shallow water oil-gas field
  • Underwater dry-type oil production device suitable for development of shallow water oil-gas field
  • Underwater dry-type oil production device suitable for development of shallow water oil-gas field

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as Figure 1 to Figure 3 As shown, the underwater dry oil recovery device suitable for the development of shallow water oil and gas fields of the present invention includes a large-diameter steel cylinder 1 and an underwater dry-type sealed cabin 2, and the underwater dry-type sealed cabin 2 is arranged on a large-diameter steel circle Inside the cylinder 1, a support structure 9 is provided between the large-diameter steel cylinder 1 and the underwater dry sealed cabin 2. In the early stage of construction, the large-diameter steel cylinder 1 isolates seawater to form a dry environment inside the cylinder. The inner diameter of the large-diameter steel cylinder 1 is set to 12m. When the large-diameter steel cylinder 1 sinks to the target depth, its top is higher than the water surface. Generally, the design depth is 40m.

[0023] The underwater dry-type s...

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Abstract

The invention discloses an underwater dry-type oil production device suitable for development of a shallow water oil-gas field. The underwater dry-type oil production device comprises a large-diametersteel cylinder and an underwater dry-type sealed cabin. The underwater dry-type sealed cabin is arranged inside the large-diameter steel cylinder, and a Christmas tree cabin, a lifesaving cabin and pieces of ground conventional oil-gas treatment equipment are arranged inside the underwater dry-type sealed cabin; the underwater dry-type sealed cabin is of a closed structure, and a reserved connector is formed in the top of the underwater dry-type sealed cabin and connected with maintenance channels; and power supplies of the pieces of ground conventional oil-gas treatment equipment are provided by submarine cables, and when the submarine cables pass through the large-diameter steel cylinder and the cabin wall of the underwater dry-type sealed cabin, sealing treatment is conducted. According to the underwater dry-type oil production device suitable for development of the shallow water oil-gas field, the ground conventional oil-gas treatment equipment is adopted, investment is greatly reduced, construction is conducted in a dry-type environment, compared with a conventional underwater production system, the cost of the underwater dry-type oil production device is lowered greatly, andunderwater dry-type oil production operation of the shallow water oil-gas field is achieved.

Description

technical field [0001] The invention belongs to the technical field of shallow water oil and gas field development, and more specifically relates to an underwater dry oil recovery device suitable for shallow water oil and gas field development. Background technique [0002] At present, many oil and gas fields in my country's shallow waters cannot be developed in the form of fixed platforms because they are located in restricted areas such as military areas and waterways. Although oilfield development can be realized by using conventional underwater production systems, it is often greatly reduced due to high investment costs. Oil Field Economic Benefits. For limited oilfields within a water depth of 40m, conventional subsea production systems are used for oilfield development. Conventional subsea production systems mainly include subsea trees, subsea manifolds, and subsea control systems, which require umbilical cables and electro-hydraulic flying lines. , underwater wet inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01
CPCE21B43/01
Inventor 李艳莉李勇刘学涛赵庆凯刘登辉刘振平王玉山邹军华谷伟吕瑞升刘海涛王莉江城张斌高建新韩旭黄德明张伯欣窦树霞田洪捷徐鹏
Owner CNOOC ENERGY TECH & SERVICES
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