A supercritical carbon dioxide indoor sand carrying experiment device and method
A carbon dioxide and experimental device technology, which is used in measurement devices, aerodynamic tests, and testing of machine/structural components.
Active Publication Date: 2020-11-03
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
However, conventional hydraulic fracturing is prone to incomplete gel breaking of the fracturing fluid, resulting in clogging of the pores, thereby reducing the permeability of the fracture, greatly affecting the effect of fracturing and increasing production, and at the same time polluting the underground environment and other problems.
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[0070] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0071] In the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom" etc. are based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
[0072] In the process of fracturing, clarifying th...
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The invention discloses a supercritical carbon dioxide indoor sand carrying experimental device and a supercritical carbon dioxide indoor sand carrying experimental method. The supercritical carbon dioxide indoor sand carrying experimental device comprises a supercritical carbon dioxide pump, a proppant adding device, a visual observation device and a sand-gas separating device, wherein an outlet end of the supercritical carbon dioxide pump is connected with an inlet end of the proppant adding device, an outlet end of the proppant adding device is connected with an inlet end of the visual observation device, and an outlet end of the visual observation device is connected with an inlet end of the sand-gas separating device. The invention further provides the supercritical carbon dioxide indoor sand carrying experimental method. The supercritical carbon dioxide indoor sand carrying experimental device and the supercritical carbon dioxide indoor sand carrying experimental method provided by the invention can study the proppant distribution pattern and transmission features of the supercritical carbon dioxide in a fracture surface, and have important research significance.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploitation. More specifically, it relates to a supercritical carbon dioxide indoor sand carrying experiment device and method. Background technique [0002] Today, with the continuous expansion of energy demand, the demand for oil and gas field exploitation is also increasing. Fracturing technology has been widely used as the main measure to increase production in oil and gas fields. However, conventional hydraulic fracturing is prone to incomplete gel breaking of the fracturing fluid, resulting in clogging of the pores, thereby reducing the permeability of the fractures, greatly affecting the effect of fracturing and increasing production, and at the same time polluting the underground environment and other problems. [0003] Supercritical carbon dioxide has the characteristics of high density, low viscosity and high diffusivity. As the preferred technology for anhydrous fracturing, the u...
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IPC IPC(8): G01M9/06G01N15/04
CPCG01M9/06G01N15/04
Inventor 张广清陈磊吕延军
Owner CHINA UNIV OF PETROLEUM (BEIJING)