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Experimental device and method for simulating stratum deformation in NGH (natural gas hydrate) exploiting process

An experimental device, mining process technology, used in measurement devices, sample preparation for testing, instruments, etc.

Active Publication Date: 2016-03-16
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

There is no experimental device and method for simulating formation deformation during natural gas hydrate production

Method used

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  • Experimental device and method for simulating stratum deformation in NGH (natural gas hydrate) exploiting process

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Embodiment

[0040] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Such as figure 1 As shown, an experimental device for simulating formation deformation during natural gas hydrate exploitation mainly includes a reaction kettle, an axial pressure piston 9, an outer jacket 15 of the kettle, an injection system 12, an axial pressure control system 10, a confining pressure control system 11, The output system 13 and the controller consist of several parts, among which:

[0042] The reactor includes a reactor body with a sealed accommodation space and an inner sleeve 2 installed in the reactor body. The reactor body includes a side wall, an upper wa...

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Abstract

The invention discloses an experimental device for simulating stratum deformation in an NGH (natural gas hydrate) exploiting process. The experimental device comprises a reaction kettle, an axial pressure piston, a kettle outer jacket, an injection system, an axial pressure control system, an ambient pressure control system and an output system. The invention further discloses an experimental method for simulating the stratum deformation in the NGH exploiting process by adopting the experimental device. The method comprises the following steps: in a hydrate generation process, ice powder particles in proper particle size are prepared through an ice powder production system, ice powder is mixed with dried submarine sediment particles, and hydrate samples with different occurrence forms and different saturation degrees can be generated. Axial deformation quantity of a sample cavity as well as gas output, water output and sand output data is calculated in an exploiting experiment. According to the experimental device and the experimental method, the influence of the hydrate samples under various geological conditions and with different occurrence forms on the stratum deformation in a decomposition process can be simulated, basic data of the influence of decomposition of NGH on the stratum deformation are obtained, and the experimental foundation and basis are provided for real NGH exploiting.

Description

technical field [0001] The invention relates to the field of natural gas hydrate exploitation, in particular to an experimental device and an experimental method for simulating formation deformation during natural gas hydrate exploitation. Background technique [0002] Natural Gas Hydrate (NGH) is produced under certain conditions from light hydrocarbons, CO 2 and H 2 The white solid crystalline substance (commonly known as combustible ice) formed during the interaction between small molecule gases such as S and water (commonly known as combustible ice) is a non-stoichiometric crystalline compound, or clathrate hydrate, gas hydrate. The main component of natural gas in NGH that exists in nature is methane (>90%), so it is often called methane hydrate (MethaneHydrate). Theoretically, in a saturated methane hydrate molecular structure, the molar ratio of methane to water is 1:6, and under standard conditions, the volume ratio of methane gas to methane hydrate is 164:1, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N1/28G01N33/00
Inventor 李小森王屹冯景春张郁李刚陈朝阳韩晗
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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