A method and device for preparing uniform high-saturation natural gas hydrate in sediments

A technology for preparing equipment and sediments, which is applied in the field of preparation of uniform and high-saturation natural gas hydrate, can solve the problems of the influence of experimental simulation results of natural gas hydrate production, and the occurrence state of hydrate is not truly reflected, and achieves a wide range of pressure resistance options. , the effect of reducing high pressure requirements and reducing manufacturing costs

Active Publication Date: 2016-03-30
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

These do not truly reflect the occurrence state of hydrates in sediments under natural conditions, which will have a great impact on the simulation results of natural gas hydrate exploitation experiments

Method used

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  • A method and device for preparing uniform high-saturation natural gas hydrate in sediments
  • A method and device for preparing uniform high-saturation natural gas hydrate in sediments
  • A method and device for preparing uniform high-saturation natural gas hydrate in sediments

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Embodiment 1

[0027] see figure 1 and figure 2 As shown, a device for preparing natural gas hydrate with uniform high saturation in sediments, including a high-pressure reactor, and a stabilized gas supply module for adjusting and controlling the gas content in the high-pressure reactor, for real-time adjustment and control of system pressure and the supplementary constant pressure liquid supply module of the solution, which is used to provide the constant temperature water bath module of the constant temperature environment for the high pressure reactor. The control module also includes a data acquisition and processing module, which is used to collect the sediment porosity, target three-phase saturation, target generation pressure and temperature in the high-pressure reactor, and is also used to collect the constant pressure liquid supply module and the stable pressure supply module respectively. The data in the gas module; the high-pressure reactor is composed of an inner reactor 1 and...

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Abstract

The invention discloses a preparation method and a preparation device of natural gas hydrate with uniform high saturability in sediment. The device comprises a stable pressure gas supply module, a constant pressure liquid supply module, an automatic control module and a data acquisition and processing module, wherein a reaction kettle consists of an inner kettle body and an outer kettle body; the inner kettle body is filled with sediments; solutions are filled in a cavity which is formed between the two kettle bodies and are uniformly dispersed into the sediment through micropores in the peripheral wall surfaces of the inner kettle body under the constant pressure condition. According to the preparation method and the preparation device, the pressure in the kettle body and the supplement of the solutions are continuously and stably controlled by using a constant pressure automatic control system, and the sediment system with high saturability of the hydrate can be prepared so as to lay a reliable experiment foundation for natural gas hydrate reservoir exploitation in the simulated natural world.

Description

technical field [0001] The invention relates to a method and a device for preparing uniform high-saturation natural gas hydrate in sediments. Background technique [0002] Natural gas hydrate, also known as combustible ice, is a white crystalline compound formed by natural gas and water under certain conditions (suitable temperature, pressure, gas saturation, water salinity and pH value, etc.) Ready to burn. The main gas component of natural gas hydrates in nature is methane, so they are often called methane hydrates (MethaneHydrates). As a new type of potential energy, natural gas hydrate has huge reserves. It is considered to be one of the most promising new energy sources that can replace petroleum and other fossil energy sources, and has been widely found in seabed sediments and terrestrial permafrost regions. [0003] Since natural gas hydrates exist in harsh alpine regions and deep-water areas of the ocean, so far there have been few reports of on-site mining of hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 李小森李波李刚黄宁生
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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