Integrated device for in-situ generation and decomposition of hydrate sediments and permeability measurement thereof

A technology for in-situ generation of hydrate sediments, applied in measurement devices, permeability/surface area analysis, analysis materials, etc. Stress state, hydrate sediment samples cannot be taken out as a whole, etc., to meet the requirements of high-precision test, easy to clean, and low cost
CN102445371AInactive Publication Date: 2012-05-09DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2012-05-09
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

An integrated device for in-situ generation and decomposition of hydrate sediments and permeability measurement thereof belongs to the field of measuring the basic physical properties of natural gas hydrates. The device mainly comprises a reaction kettle, a cold store, a scavenging leakage detection system, a temperature control system, a gas supply system, a water supply system, a permeability measurement system and a computer data acquisition system. A compression type design is adopted for the reaction kettle so that different stress states can be simulated. The device has the following advantages that: the cold store and a constant temperature bath are capable of realizing quick and accurate control of temperatures; the gas supply system is quick and convenient to increase and preserve pressures; the data acquisition system has the functions of data storage and real-time analysis; the temperatures, pressures, historical sedimentary conditions and stress states of different hydratesediment reservoirs can be simulated; and a hydrate sediment sample can be integrally taken out in a relatively convenient manner, and can be directly put in a low-temperature high-pressure three-axis tester for the mechanical characteristic testing research. Besides, the device plays an important role in guiding the drilling and safe mining of natural gas hydrates.
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Description

technical field

[0001] The invention relates to an integrated device for in-situ generation and decomposition of hydrate deposits and measurement of permeability thereof, which belongs to the field of basic physical property measurement of natural gas hydrate. Background technique

[0002] Natural gas hydrate has the characteristics of wide distribution, large amount of resources, shallow burial, high energy density, and cleanliness. It is the largest unknown energy pool that has not yet been developed on the earth. It is considered to be the most ideal new energy source with commercial development prospects in the 21st century. The safe exploitation of natural gas hydrate has been widely valued by scientists and governments of various countries, and has become a new research hotspot in the oil and gas industry, and may have a profound impact on the development of environmental science and energy industry. In May 2007, my country officially collected natural gas hydrate phys...

Claims

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