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Three-dimensional multiwall combined exploration experimental apparatus for natural gas hydrate and experimental method thereof

An experimental device and combined mining technology, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., can solve the problems that the mining efficiency cannot be improved

Inactive Publication Date: 2012-01-04
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

In actual mining, one well is far from enough, and its mining efficiency cannot be improved.

Method used

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  • Three-dimensional multiwall combined exploration experimental apparatus for natural gas hydrate and experimental method thereof
  • Three-dimensional multiwall combined exploration experimental apparatus for natural gas hydrate and experimental method thereof
  • Three-dimensional multiwall combined exploration experimental apparatus for natural gas hydrate and experimental method thereof

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Embodiment Construction

[0046] 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.

[0047] The purpose of the physical model experiment is to simulate the change of the dynamic parameters of the actual hydrate reservoir relative to the infinite formation, but the experimental reactor has a boundary, and the existence of the boundary will affect the equipotential line distribution of the seepage field, the streamline distribution and the production of the well. This effect is usually referred to as the "boundary effect". In order to deal with the "boundary effect" of the seepage field, according to the sink point reaction method of the straight line impermeable boundary,...

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Abstract

The invention discloses a three-dimensional multiwall combined exploration experimental apparatus for a natural gas hydrate and an experimental method thereof. The device comprises a three-dimensional high pressure reactor, an inlet control unit, an outlet control unit, and a data processing unit; the three-dimensional high pressure reactor is provided with a plurality of wells which are extended into a stimulation cavity and comprises a central vertical well and a plurality of vertical side wells; the stimulation cavity is divided into n horizontal layers along the vertical direction; and all vertical well pipes are extended into the horizontal layers with different depths in the simulation cavity respectively. The hydrate can be exploited by simulating a plurality of wells in a combined way; various exploration mechanisms, and exploration trends can be comprehensively researched, and various exploration methods are optimized and comprehensively evaluated; and the experimental apparatus realizes the simulation of hydrate multiwall exploration through experiments, so that the three-dimensional simulation experiment is expanded and experimental basis and reference are provided for the large-scale natural gas hydrate exploration.

Description

technical field [0001] The invention relates to the field of natural gas hydrate exploitation, in particular to a three-dimensional multi-well combined exploitation experimental device and an experimental method for natural gas hydrate. Background technique [0002] Natural gas hydrate refers to a cage-like crystal substance formed by natural gas and water at a certain temperature and pressure. It can burn when exposed to fire, commonly known as "combustible ice". With the continuous deepening of people's research on hydrates, the characteristics of hydrates and their impact on the environment have become more and more known to humans, and more importantly, their value as an effective alternative energy has also become increasingly prominent. [0003] Gas hydrates can exist in nature in many ways. Based on the characteristics of gas hydrates, it is different from the development of conventional traditional energy sources. It is manifested in that the hydrate is buried as a ...

Claims

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Application Information

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IPC IPC(8): E21B43/01
Inventor 李小森王屹黄宁生李刚陈朝阳张郁
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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