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Evaluation device and evaluation method for damage of hydrate-containing reservoir

A technology of hydrate-containing and evaluation devices, which is applied in the direction of earthwork drilling and production, wellbore/well components, etc.

Inactive Publication Date: 2019-04-09
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

However, the current evaluation methods are no longer suitable for the development of hydrate reservoirs, and the formation of a rapid evaluation method for hydrate reservoir damage is of great significance for the whole process protection and economic development of hydrate reservoirs

Method used

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  • Evaluation device and evaluation method for damage of hydrate-containing reservoir
  • Evaluation device and evaluation method for damage of hydrate-containing reservoir

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Experimental program
Comparison scheme
Effect test

Embodiment

[0025] refer to figure 1 and figure 2 , which is an evaluation device for hydrate-bearing reservoir damage, including:

[0026] Sample synthesis chamber 10, used to synthesize hydrate-containing reservoirs;

[0027] The stress-strain system is connected to the sample synthesis chamber 10 through pipelines, and is used to provide the overlying stress and pore pressure for the sample synthesis chamber 10, and measure the pressure and strain of the reservoir;

[0028] The temperature system is connected to the water jacket of the sample synthesis chamber 10 through pipelines, and is used to control the temperature of the sample synthesis chamber 10, and the temperature sensor group T of the required three-dimensional temperature measurement module measures the temperature of the sample synthesis chamber 10;

[0029] The gas-liquid-solid separation system is connected to the sample synthesis chamber 10 through a pipeline, and is used to perform gas-liquid or gas-liquid-solid se...

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Abstract

The invention discloses an evaluation device for damage of a hydrate-containing reservoir. The device comprises a sample synthesis chamber for synthesizing the hydrate-containing reservoir, a stress-strain system for providing overlying stress and pore pressure for the sample synthesis chamber and measuring pressure and strain of the reservoir, a temperature system for controlling temperature of the sample synthesis chamber, a gas-liquid-solid separation system for performing gas-liquid separation or gas-liquid-solid separation on products of the sample synthesis chamber and measuring the products as well as a data acquisition and monitoring system for acquiring real-time data and acquiring images of the gas-liquid-solid separation system in real time. The device can synthesize a specifichydrate sample under the overlying stress condition, monitor temperature, pressure and strain in the synthesis process of the hydrate sample, conduct sensitivity tests on the specific hydrate-containing sample and evaluate the sensitivity of the sample and damage degree of the reservoir by a working solution.

Description

technical field [0001] The invention relates to the technical field of natural gas hydrate exploration and development, in particular to an evaluation device and evaluation method for hydrate-containing reservoir damage. Background technique [0002] Natural gas hydrate is an ice-like solid formed by gas and water under high-pressure and low-temperature conditions. It is widely distributed in deep-sea sediments or land permafrost. Its reserves are very large, twice the total carbon content of conventional fuels in the world. However, hydrate reservoirs have complex structure, low permeability, complex mineral composition, and complex temperature and pressure. Therefore, it is necessary to evaluate the key factors and degree of possible damage to hydrate reservoirs during the exploration and development process. [0003] The existing technology does not have the ability to synthesize hydrates, cannot test reservoir damage under hydrate-bearing conditions, and has not carried ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 卢静生李栋梁梁德青何勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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