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Natural gas hydrate geological stratification device and method

A technology of geological stratification and hydrate, which is applied in earthwork drilling, teaching models, wellbore/well components, etc.

Inactive Publication Date: 2020-11-27
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there is a lack of experimental equipment to realize the stratification design in the reactor and realize the simulation of the formation fluid

Method used

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  • Natural gas hydrate geological stratification device and method
  • Natural gas hydrate geological stratification device and method
  • Natural gas hydrate geological stratification device and method

Examples

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Embodiment

[0036] see figure 1 , figure 2 , the device includes a reactor, the reactor is placed in a constant temperature water bath or utilizes a formation temperature gradient simulator to control the temperature, the reactor includes an upper lid 20, a lower lid 14 and a kettle body 11, the upper lid 20 is connected to the The lower kettle lid 14 is hermetically closed at both ends of the kettle body 11 to form a closed cavity. The reactor is provided with a central mining shaft 1 and a well pattern shaft 2, and the central mining shaft 1 runs through the axis of the reactor ( figure 1 The central mining shaft 1 does not penetrate the axis of the reactor, whether the central mining shaft 1 runs through the collection can be selected according to actual mining needs), and the well pattern shaft 2 is inserted into the reservoir from the upper kettle cover 20. The inside of the reactor is divided into four strata according to the simulated formation: the overlying pressure layer 19, ...

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Abstract

The invention discloses a natural gas hydrate geological stratification device. The natural gas hydrate geological stratification device comprises a reaction kettle which is disposed in a thermostaticwaterbath. The reaction kettle comprises an upper kettle cover, a lower kettle cover and a kettle body. The upper kettle cover and the lower kettle cover are sealed and closed at the two ends of thekettle body so as to form a closed cavity. An overlying pressure layer, an upper cover layer, a hydrate layer and a lower cover layer are sequentially formed in the cavity from the upper kettle coverto the lower kettle cover. Each layer is filled with different porous media and fluid and is further provided with an annular formation fluid container. The outer ring circumference of each annular formation fluid container makes contact with the inner wall of the kettle body. The method is executed with the natural gas hydrate geological stratification device. The natural gas hydrate geological stratification device is used for simulating the layered condition of hydrate in a reservoir, and the amount of stratum make-up fluid of different strata in the forming process of the hydrate can be studied.

Description

technical field [0001] The invention relates to the technical field of natural gas hydrate formation simulation experiments, in particular to a natural gas hydrate geological stratification device and method. Background technique [0002] Natural gas hydrate (Natural Gas Hydrates, NGH) is a white ice-like crystal composed of water molecules and gas molecules such as light hydrocarbons, CO2 and H2S under low temperature and high pressure conditions (can be directly burned, commonly known as combustible ice), is a non-chemical Metering of inclusion compounds. Natural gas hydrate is widely distributed in the world and has a large amount of resources. It is considered to be a future high-quality and clean energy. Its reserves are about twice the total carbon content of the existing earth's fossil fuels (oil, natural gas and coal). It will become the most important energy source for mankind in the 21st century. With the increasing energy demand of human beings, traditional heav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/01
CPCE21B49/00E21B43/01G09B23/40
Inventor 李小森陈朝阳王屹夏志明李刚张郁
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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