Method for exploiting thick oil reservoir by carbon dioxide method
A technology for carbon dioxide and heavy oil reservoirs, applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problem of crude oil drive away, achieve high oil recovery, simple equipment, and high energy utilization
Inactive Publication Date: 2016-05-25
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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However, due to gravity in the steam chamber, the crude oil is deposited in the lower part and the steam is in the upper part, so the crude oil cannot be driven away well
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[0021] The method for the concrete carbon dioxide method of the present invention to exploit the heavy oil reservoir will be described in detail below according to the accompanying drawings.
[0022] A method for mining heavy oil reservoirs by carbon dioxide method according to the present invention: the device adopted in the method has a first boiler (1); a carbon dioxide generator (2); a second boiler (3); injecting carbon dioxide and steam to mix Fluid injection well (4); temperature display (5); pressure display (6); first production well (7); second production well (8); third production well (9); fourth production well (10 ); it is characterized in that the injection well (4) of the first boiler (1) is connected to the injection well (4) of the mixed fluid of carbon dioxide and water vapor through pipelines, and the temperature indicator (5), the pressure indicator (6) and the injection of the mixed fluid of carbon dioxide and water vapor respectively The well (4), the ca...
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The invention belongs to the field of a thick oil reservoir exploiting process and technology. In the thick oil exploiting process, the dissolution effect of carbon dioxide on thick oil is used; after the dissolution in the water, carbonic acid produced after the chemical reaction with water vapor has a blockage reduction effect on the stratum. The water vapor and the carbon dioxide gas are mixed according to a proper proportion, and the crude oil viscosity is greatly reduced. The invention relates to a method for exploiting a thick oil reservoir by a carbon dioxide method; the devices related in the method mainly comprise a first boiler (1), a carbon dioxide generator (2), a second boiler (3), an injection well (4) for injecting the carbon dioxide and the water vapor, a temperature display (5), a pressure display (6), a first production well (7), a second production well (8), a third production well (9) and a fourth production well (10). The method is mainly applied to oil field oil extraction.
Description
technical field [0001] The invention relates to a method for exploiting heavy oil reservoirs, which uses the method of adding a suitable proportion of carbon dioxide into steam to achieve the purpose of reducing the viscosity of crude oil, in particular to a method for exploiting heavy oil reservoirs with carbon dioxide, which belongs to heavy oil reservoirs Mining technology and technology field. Background technique [0002] In the production and development of global oil, except for a very few oil-producing countries, the conventional oil recovery in most countries has entered the middle or late stage. The common phenomenon is that the difficulty of extraction increases, the cost of extraction increases, and the output gradually decreases. In order to ensure future development, some larger oil companies had to adjust their strategies. Without exception, our country has fallen into a serious shortage of normal oil reserves. In the next few years, the shortage of crude oil...
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Login to View More IPC IPC(8): E21B43/16E21B43/24
CPCE21B43/164E21B43/24
Inventor 钟伟吕振波潘振商丽艳吴官纪
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY