Exploitation device of gas hydrate of shallow water region and exploitation method

A regional and shallow water technology, applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve problems such as difficult mining, and achieve the effects of low mining difficulty, simple structure, and simple and convenient operation.

Inactive Publication Date: 2013-08-07
CHINA NAT OFFSHORE OIL CORP +1
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However, at present, there is still no feasible technol

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  • Exploitation device of gas hydrate of shallow water region and exploitation method

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[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0024] The core of the present invention is to provide a combustible ice mining device and mining method in a shallow water area, which can solve the difficult problem of combustible ice mining, and has a simple structure and low cost.

[0025] Such as figure 1 As shown, the combustible ice mining device in the shallow water area of ​​the present invention includes a sleeve 1 and a sleeve 2 connected to the lower end of the sleeve 1, the sleeve 1 communicates with the sleeve 2, and the upper end of the sleeve 2 passes through A tapered section is connected to the lower end of the casing 1 . The diameter of the casing 1 is 100mm~508mm, the diameter of th...

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Abstract

The invention discloses an exploitation device of gas hydrate of a shallow water region and belongs to the technical field of marine energy exploitation. The exploitation device of the gas hydrate of the shallow water region comprises a casing pipe (1) and a sleeve (2) which is connected at the lower end of the casing pipe (1), the casing pipe (1) and the sleeve (2) are communicated, heating wires (3) are arranged inside the sleeve (2), and a cable (5) which supplies power to the heating wires (3) is arranged inside the casing pipe (1) and the sleeve (2). The exploitation device of the gas hydrate of the shallow water region can facilitate the exploitation of the gas hydrate of the shallow water region, and is relatively small in exploitation difficulty, simple in structure, low in cost of investment, easy and convenient to operate, and widely applicable to offshore oil and gas fields. The invention further discloses a method for exploiting the gas hydrate of the shallow water region by utilizing the exploitation device of the gas hydrate of the shallow water region.

Description

technical field [0001] The invention belongs to the technical field of offshore energy exploitation, and in particular relates to a device suitable for mining combustible ice in shallow water areas, and also relates to a method for mining combustible ice in shallow water areas. Background technique [0002] Natural Gas Hydrate (Gas Hydrate for short) is an ice-like crystalline substance distributed in deep sea sediments or permafrost in land areas, formed by natural gas and water under high pressure and low temperature conditions. It is also called "combustible ice" because it looks like ice and can burn when exposed to fire. The Shenhu sea area in the west of the South my country Sea contains a large amount of combustible ice, with an area of ​​about 22km 2 , the thickness of combustible ice is about 20m, and its value exceeds 70 billion yuan. It is a kind of energy with mining value. However, there is still no feasible technology to develop it in China at present, and it...

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Application Information

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IPC IPC(8): E21B43/01E21B43/24
Inventor 徐一龙黄凯文余意李磊张超梁继文鹿传世吴江熊永卫曾春珉许发宾张崇黄亮曹峰杨仲涵
Owner CHINA NAT OFFSHORE OIL CORP
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