High-temperature high-pressure physical model using X-CT to scan fracture cavity
An X-CT, high temperature and high pressure technology, which is used in the production of fluids, wellbore/well components, earthwork drilling, etc., can solve the difference, size and connection relationship, real-time observation and recording of fluid flow conditions and oil, gas and water distribution and other problems, to achieve the effect of simple production, conducive to maintenance and adjustment, and sufficient source of rock samples
Inactive Publication Date: 2020-01-21
SOUTHWEST PETROLEUM UNIV
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However, this model is an ideal simplified injection agent physical model for fracture-vuggy reservoirs. The pores and fractures in fracture-vuggy reservoirs are replaced by pipelines, and the caves are replaced by intermediate containers, which are not filled with medium. Through the connection of pipelines, the specific shape, size and connection relationship of pores, fractures, and holes in fractured-vuggy reservoirs are not shown. There are large differences; the injection physical model of fractured-cavity reservoirs cannot observe and record the fluid flow conditions and oil, gas and water distribution in the model in real time
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[0017] The present invention will be further described below according to the accompanying drawings, so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of specific embodiments. For those of ordinary skill in the art, as long as various changes are within the technical scope defined and determined by the appended claims, they are all included in the protection list.
[0018] see figure 1 , figure 2 .
[0019] A high-temperature and high-pressure X-CT scanning fracture-cavity physical model, consisting of an X-CT scanner, a fracture-cavity simulation container 3, a pressure gauge 5, a back pressure valve 6, a gas-liquid separator 8, a gas meter 9, an advection pump 10, Intermediate container group I11 and intermediate container group II12 are composed of intermediate container group I11 including injectant intermediate container, simulated oil intermediate container and form...
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The invention relates to a high-temperature high-pressure physical model using X-CT to scan a fracture cavity. The physical model is composed of an X-CT scanner, a fracture cavity simulation container3, a pressure gauge 5, a back pressure valve 6, a gas-liquid separator 8, a gas meter 9, a constant-flux pump 10, an intermediate container set I 11 and an intermediate container set II 12, wherein the fracture cavity simulation container 3 is fixed on a scanning frame, and an X-ray generation system scans the fracture cavity simulation container, and displays the scanning result on a display screen of a console; a fracture cavity simulation rock sample 15 is placed in a kettle body of the fracture cavity simulation container, a built-in interlayer 14 is arranged between the kettle body and the rock sample, and a heating layer 17 is arranged outside the kettle body in a covering mode; an injection port and an extraction port are formed in the two sides of the fracture cavity simulation container correspondingly, the injection port is connected with the intermediate container set I and the constant-flux pump 10, and the extraction port is sequentially connected with the pressure gauge5, the back pressure valve 6, the gas-liquid separator 8 and the gas meter 9; and a gas injection port is formed in the top end of the fracture cavity simulation container, and a stratum water injection port is formed in the bottom end of the fracture cavity simulation container. The model has the advantages that the occupied space is small, the operation is flexible, and the great guiding significance is provided for actual development of the fracture cavity oil reservoir.
Description
technical field [0001] The present invention relates to a physical experiment model of fractured-vuggy carbonate rock reservoirs in the field of petroleum and natural gas exploration and development, in particular to a physical model of fractured-cavity scanning with high temperature and high pressure X-CT, which is used for related physical simulation experiments of indoor fractured-vuggy reservoirs , to provide scientific guidance for the development and production of high-temperature and high-pressure fracture-cavity carbonate reservoirs. Background technique [0002] Fracture-vuggy carbonate reservoir is a reformed reservoir with pores, fractures and caves as the main seepage channels and storage spaces. The fractured-vuggy carbonate reservoir cannot completely displace the oil from the pores, fractures and caves during the process of water flooding, and needs to be further exploited by gas injection at the top of the reservoir. Experimental simulation is a common metho...
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Login to View More IPC IPC(8): E21B49/00E21B43/20E21B43/22
CPCE21B43/16E21B43/20E21B49/00
Inventor 杜建芬李超凡郭平唐伟陈一健刘煌
Owner SOUTHWEST PETROLEUM UNIV