Shale dynamic imbibition device and method for determining dynamic imbibition influence result
A shale and imbibition technology, which is applied in measurement devices, material absorption and weighing, instruments, etc., can solve problems such as affecting the development of shale gas, inability to accurately evaluate the imbibition capacity of shale reservoirs, and avoid non-uniformity. Qualitative effects, effects of improving accuracy
Active Publication Date: 2021-02-26
CHINA UNIV OF PETROLEUM (BEIJING)
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[0003] Most of the existing spontaneous imbibition devices are tested under static conditions. In this way, based on the existing spontaneous imbibition devices, the difference in the degree of influence of different factors on the spontaneous imbibition behavior of shale is only a matter of changing the temperature and pressure of imbibition. However, in the actual shale reservoir fracturing development process, many dynamic factors such as the contact area between the fracturing fluid and the reservoir and the properties of the fracturing fluid can affect the imbibition capacity of shale
Therefore, the existing methods cannot accurately evaluate the actual imbibition capacity of shale reservoirs, which affects the development of shale gas
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[0014] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.
[0015] The present application provides a shale dynamic imbibition device, which may include: a movable sample holder for moving the target shale sample between the cleaning and drying area and the spontaneous imbibition area, the movable sample holder A load cell and a sample clamp are arranged on the top, the load cell is used to detect the quality of the target shale sample, the sample clamp is used to fix the target shale sample, and the sample cla...
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The invention provides a shale dynamic imbibition device and a method for determining a dynamic imbibition influence result. The device comprises: a movable sample support, which is used for enablinga sample to move between a cleaning and drying area and a spontaneous imbibition area, and is provided with a weighing sensor and a sample clamp; the cleaning and drying area, which is used for cleaning and drying the sample; the spontaneous imbibition area, which is used for carrying out an imbibition experiment on the cleaned and dried sample; a controller, which is used for controlling the movable sample support to move to enable the sample to move between the cleaning and drying area and the spontaneous imbibition area and controlling a sample clamp opening and closing door to change the imbibition mode and the contact area of the sample; and a solution supply area, which is used for supplying the solution for the spontaneous imbibition experiment in the spontaneous imbibition area andchanging the solution for the spontaneous imbibition experiment in the spontaneous imbibition area. The device can quantitatively evaluate the influence degree of different influence factors on the shale imbibition capacity, and the accuracy of evaluating the actual imbibition capacity of the shale reservoir is improved.
Description
technical field [0001] The application relates to the technical field of oil and gas field development, in particular to a shale dynamic imbibition device and a method for determining the result of dynamic imbibition. Background technique [0002] Spontaneous imbibition is a process in which a non-wetting fluid is spontaneously displaced by another wetting fluid under the action of capillary force. The spontaneous imbibition process in reservoir rocks may be affected by many factors such as reservoir surface tension, wettability, pore structure, mineral composition and fluid properties. Different from exploiting conventional oil and gas reservoirs, in the process of exploiting shale gas reservoirs, fracturing technology is generally used to increase the contact area between the fluid and the reservoir, and the choice of appropriate fracturing fluid to displace the oil and gas in the reservoir is improved. The overall conductivity of the shale reservoir will eventually incre...
Claims
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Login to View More IPC IPC(8): G01N5/02G01N13/04
CPCG01N5/02G01N13/04
Inventor 高之业熊书苓姜振学黄立良梁祝杨弼鼎郑国伟段龙飞
Owner CHINA UNIV OF PETROLEUM (BEIJING)