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Detachable natural gas hydrate simulation sand production and sand prevention test reaction device and method

A reaction device and hydrate technology, applied in chemical instruments and methods, soil material testing, material inspection products, etc., can solve problems such as complex devices, difficulty in making experimental design schemes, and insufficient flexibility of simulation devices

Active Publication Date: 2020-12-11
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0003] Existing technology simulators are not flexible enough, and can only simulate a few cases of hydrate sand production and sand control tests
The lack of modularization of each part of the device makes the device complex and difficult to do more experimental designs

Method used

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  • Detachable natural gas hydrate simulation sand production and sand prevention test reaction device and method
  • Detachable natural gas hydrate simulation sand production and sand prevention test reaction device and method
  • Detachable natural gas hydrate simulation sand production and sand prevention test reaction device and method

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Embodiment

[0071]In this embodiment, in order to more clearly explain the combination characteristics of the reactor system of the present invention, the first reactor assembly, the second reactor assembly, and the third reactor assembly can be referred to as the left and right reactors, the second left and right reactors, and the central reactor respectively. Reactor, the reactor system can be referred to simply as the reactor. The production method can choose decompression production or heat injection production according to the needs. Among them, depressurization production is one of the main natural gas hydrate production methods at present. The lower phase equalizes the pressure, so that the hydrate decomposes from the solid to the phase transition to produce methane gas. The well design of decompression method is similar to that of conventional oil and gas production, and the pressure in hydrate reservoirs with better permeability spreads quickly. Therefore, depressurization method...

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Abstract

The invention discloses a detachable natural gas hydrate simulation sand production and sand prevention test reaction device and method. A simulation natural gas hydrate exploitation sand production and sand prevention test is divided into a reaction kettle system, a gas injection water sand system, a gas-water-sand separation metering system, a low-temperature water bath jacket system and a supporting and safety system. Reaction kettles in the reaction kettle system can be combined into different reaction kettles according to different experiment conditions and purposes. The reaction kettlesmainly comprise left and right reaction kettles, secondary left and right reaction kettles, a central reaction kettle and a sealing cover. The reaction kettle system disclosed by the invention has thecharacteristic of a flexible assembly design, and the reaction kettle without a sieve tube for realizing hydrate generation and decomposition is formed by combining the left and right reaction kettles and the sealing cover; and a series of sand production and sand prevention tests of a single well and double wells without an observation area, a single well and double wells of a single observationarea, a single well and double wells of double observation areas and the like can be simulated by combining the left reaction kettle, the right reaction kettle, reaction kettle accessories, the secondary left reaction kettle, the secondary right reaction kettle and the central reaction kettle.

Description

technical field [0001] The invention relates to a sand control process test for natural gas hydrate mining, in particular to a detachable natural gas hydrate simulated sand production sand control test reaction device and method. Background technique [0002] With the increasing depletion of traditional energy sources, natural gas hydrate has the characteristics of large reserves, high energy density and wide distribution, and has become a very potential alternative energy source. At present, the research and development of natural gas hydrate in the world has entered the stage of actual exploitation. In the actual production stage, there is a very serious problem - sand plugging, which has become a key issue restricting the long-term sustainable development of natural gas hydrates. Therefore, it is particularly important to study the problem of sand production and sand control of gas hydrate in the production process. [0003] The prior art simulators are not flexible eno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24B01J19/1818B01J2219/00094B01J2219/00283B01J2219/00286B01J2219/00337B01J2219/00423E21B43/084E21B41/0099E21B2200/20
Inventor 李小森王屹陈朝阳胡恒齐夏志明李刚张郁
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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