Method of Microwave Heating Underground Oil Shale for Oil and Gas Exploitation and Simulation Experiment System

A microwave heating and simulation experiment technology, which is applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve the problems of low thermal conductivity, slow heat transfer rate and slow heating rate of oil shale temperature in oil shale.

Inactive Publication Date: 2011-11-30
PETROCHINA CO LTD
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  • Application Information

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Problems solved by technology

The process is to use the convection heating method to heat the horizontal wellbore, and then use the high-temperature wellbore to heat the oil shale ore layer by heat conduction. The disadvantage of this method is the same as that of Shell’s electric heating rod heating method. slow heat rate problem
[00

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  • Method of Microwave Heating Underground Oil Shale for Oil and Gas Exploitation and Simulation Experiment System
  • Method of Microwave Heating Underground Oil Shale for Oil and Gas Exploitation and Simulation Experiment System
  • Method of Microwave Heating Underground Oil Shale for Oil and Gas Exploitation and Simulation Experiment System

Examples

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Embodiment 1

[0025] figure 1 It is an overall flow chart of a method for extracting oil and gas from oil shale with microwave and subsurface heating in Example 1 of the present invention. Such as figure 1 As shown, the method includes:

[0026] 100. Carry out horizontal and vertical fracture creation on the underground oil shale mineral layer, respectively generate transverse cracks and vertical cracks, and inject microwave strong absorption medium into the generated longitudinal cracks;

[0027] 110. Perform direct microwave radiation heating on the oil shale deposit and the microwave strong absorption medium, conduction heating of the oil shale deposit by the microwave strong absorption medium with increased temperature, and allow the generated oil and gas to pass through the transverse Crack export.

[0028] For details below, please refer to Figure 2A and Figure 2B ,in, Figure 2A It is the application schematic diagram of the microwave heating oil shale extraction method for o...

Embodiment 2

[0034]Embodiment 2 of the present invention provides a simulation experiment system for exploiting oil and gas from underground oil shale by microwave heating. This simulation experiment system mainly heats oil shale and microwave strong absorption medium through microwaves. After the temperature of microwave strong absorption medium rises, the oil shale is heated by heat conduction. Therefore, the reaction system is a combination of heat radiation and heat conduction. Heating oil shale, the simulation experiment system can be used to carry out the heat conduction law and shale oil recovery rate of oil shale microwave mining in different areas under different microwave powers, and provide information for microwave heating in situ oil shale extraction in different areas. parameters and development ideas.

[0035] Such as image 3 As shown, a kind of simulation experiment system applied to the mining method of embodiment 1 of embodiment 2 of the present invention comprises:

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Abstract

The embodiment of the present invention provides a method for extracting oil and gas from underground oil shale by microwave heating and its simulation experiment system. , inject microwave strong absorption medium into the generated longitudinal fractures; carry out direct microwave radiation heating on the oil shale ore layer and the microwave strong absorption medium, and conduction heating of the microwave strong absorption medium with temperature increase to the oil shale The ore layer, and the generated oil and gas are exported through the transverse fractures. The method of the embodiment of the present invention utilizes microwave heating, and by making cracks in the oil shale bed, filling it with a microwave strong absorption medium, it can effectively improve the microwave absorption efficiency, make the oil shale bed heat up rapidly, and increase the oil and gas content of the oil shale. mining efficiency.

Description

technical field [0001] The invention relates to in-situ oil shale exploitation, in particular to a method for exploiting oil and gas from underground oil shale heated by microwaves and a simulation experiment system thereof. Background technique [0002] Oil shale is a low-permeability rock composed primarily of minerals and kerogen, the geological precursor to oil and natural gas. China is rich in oil shale resources. The resources buried between 0-500m are about 250 billion tons, and the oil shale resources between 500-1000m are 250 billion tons. Oil shale resources with a buried depth of less than 300m can be mined in the open pit and transported to a dry distillation plant to extract shale oil; oil shale with a buried depth of more than 300m can be converted into shale oil by heating the oil shale ore, and then used to produce shale oil. lead to the ground. The latter technology is still in the research and development stage and has not yet entered industrial productio...

Claims

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Application Information

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IPC IPC(8): E21B43/24
Inventor 方朝合李小龙郑德温葛稚新王红岩王盛鹏崔思华姚建军王义凤薛华庆刘人和
Owner PETROCHINA CO LTD
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