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Method for filling empty region formed after exploitation of gas hydrate

A natural gas and hydrate technology, which is applied in the fields of filling, mining equipment, and earth-moving drilling, etc., can solve problems such as geological structure hazards, and achieve the effect of reducing mining costs and facilitating large-scale mining.

Inactive Publication Date: 2012-03-14
范福仓
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Problems solved by technology

[0002] At present, the exploitation of natural gas hydrate is still in the trial stage. In the process of exploiting natural gas hydrate, when the natural gas hydrate in a certain area is exhausted, a hollow area will be formed underground. If it is not filled in time, it will affect the geological The structure poses a great hazard

Method used

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  • Method for filling empty region formed after exploitation of gas hydrate
  • Method for filling empty region formed after exploitation of gas hydrate
  • Method for filling empty region formed after exploitation of gas hydrate

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Embodiment Construction

[0010] exist figure 1 Among them, in the shaft (1) of the production well, an artesian water pipeline (7) is installed, and the upper end of the artesian water pipeline (7) is immersed in seawater (2), and in the underground post-mining hollow area (11), install There is filling equipment (5), the inlet end of the filling equipment (5) is connected with the artesian water pipeline (7), the bottom of the wellbore (1) is natural gas hydrate (4), and the top of the natural gas hydrate (4) is Continental shelf (3), when the postharvest empty subsidence area (11) will be filled, prepare small plastic film bag earlier, small plastic film bag is enclosed within on the filling water pipe, open control valve, self-flowing water pipeline (7 ) the seawater in the inside just flows into the small plastic film bag through the filling equipment (5), and it is automatically sealed after being filled, and then the small plastic film bags filled with water are stacked in order in the post-harv...

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Abstract

The invention relates to a method for filling an empty region formed after exploitation of gas hydrate. In the method, a nature flow water conveying pipeline is arranged in a pitshaft of an exploiting well; the upper end of the nature flow water conveying pipeline is immersed into sea water; encapsulation equipment is arranged in the empty region after underground exploitation; a control valve and an encapsulation water pipe are arranged above the encapsulation equipment; the inlet end of the encapsulation equipment is connected with the nature flow water conveying pipeline; a small plastic film bag is prepared and sleeved on the encapsulation water pipe; the control valve is opened; sea water in the nature flow water conveying pipeline flows into the small plastic film bag through the encapsulation equipment and is automatically sealed after the small plastic film bag is full of water; and the small plastic film bag full of water is stacked in the empty region after exploitation sequentially, so that the empty region can be filled well.

Description

Technical field [0001] The invention relates to a method for filling the formed hollow area after the natural gas hydrate in a certain area underground is mined when the natural gas hydrate is exploited. Background technique [0002] At present, the exploitation of natural gas hydrate is still in the trial stage. In the process of exploiting natural gas hydrate, when the natural gas hydrate in a certain area is exhausted, a hollow area will be formed underground. If it is not filled in time, it will affect the geological The structure poses a great hazard. Contents of the invention [0003] In order to overcome the existing situation, in the process of exploiting natural gas hydrate, when the natural gas hydrate in a certain area is exhausted, a hollow area will be formed in the ground, if it is not filled in time, it will cause great harm to the geological structure The invention provides a method for filling the hollow area formed after the exploitation of natural gas h...

Claims

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Application Information

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IPC IPC(8): E21F15/00
Inventor 范福仓
Owner 范福仓
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