A radial flow displacement simulation device
A technology of displacement simulation and radial flow, which is applied in the directions of measurement, wellbore/well components, earthwork drilling and production, etc. It can solve the problems that the three-dimensional radial flow displacement process cannot be simulated, and the guiding significance of the pollution radius is poor.
Active Publication Date: 2016-04-20
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
However, the one-dimensional linear flow short core displacement equipment used in the traditional method cannot simulate the three-dimensional radial flow displacement process, and the experimental process is quite different from the actual water injection operation, which has poor guiding significance for judging the pollution radius caused by water injection quality
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] Such as Figure 1 ~ Figure 3 As shown, the present invention includes a fan-shaped through groove surrounded by two ribs 1 and a fan plate 2, and a fan-shaped bottom plate 3 and a cover plate 4 are respectively fastened to the bottom and top of the fan-shaped through groove to form a fan-shaped cavity. , and the fan-shaped cavity is filled with sand bodies. An oil-resistant, temperature-resistant and pressure-resistant gasket 6 (such as a silicone gasket) is arranged between the cover plate 4, the two ribs 1, and the sand body, and another gasket 7 is arranged between the bottom plate, the two ribs, and the sand body. The two sealing pads 6, 7 ensure the airtightness between the inside of the fan-shaped cavity and the external environment. An injection valve 8 is arranged at the connection outside the two ribs 1, and a screen 9 connected with...
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The invention relates to a radial flow displacement simulation device which comprises a fan-shaped cavity, a metering pump and a data acquisition and control system. An injection valve is arranged on the outside of the fan-shaped cavity, a screen pipe is arranged inside the fan-shaped cavity, a plurality of water outlet nozzles are formed in a fan plate, a liquid storage barrel is arranged on the outside of the fan-shaped cavity, a metering balance is arranged at the bottom of the liquid storage barrel, a balance pressure applying valve is arranged on the top of a cover plate, an outlet of the balance pressure applying valve is communicated with sealing pads via a guide pipe which penetrates the cover plate, a plurality of pressure guide pipes are arranged at the bottom of a bottom plate at intervals, and a pressure measuring sensor is connected to the bottom of each pressure guide pipe; the metering pump is connected with three working liquid containers in parallel, an outlet of the metering pump is connected with a liquid injection header pipe, a three-way connector is arranged at the tail end of the liquid injection header pipe, an outlet of the three-way connector is connected with the injection valve, another outlet of the three-way connector is connected with the balance pressure applying valve, a pressure gauge is arranged between the three-way connector and the injection valve, a pressure release valve is arranged between the three-way connector and the balance pressure applying valve, an energy storage and another pressure release valve are arranged on the liquid injection header pipe, another pressure gauge is arranged on the top of the cover plate, and a measuring end of the other pressure gauge is in contact with the sealing pads after penetrating the cover plate.
Description
technical field [0001] The invention relates to a displacement simulation device, in particular to a radial flow displacement simulation device used for simulating the clogging state of a reservoir during the injection process of a water injection well. Background technique [0002] For oilfields with insufficient natural energy, when the development enters the middle and later stages, in order to ensure the development effect of the oilfield, certain measures must be taken to supplement the formation energy. Using water injection wells to carry out "water drive oil" is an important means to achieve this goal. Due to the influence of factors such as water injection quality and stratum scaling, many water injection wells have serious formation clogging problems during the water injection process, resulting in an increase in wellhead injection pressure, a decrease in water injection volume, and difficulty in achieving injection quotas, resulting in formation energy. The short...
Claims
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IPC IPC(8): E21B47/00E21B47/06E21B49/00
Inventor 武广瑷曹砚锋管虹翔吕鑫白玉湖
Owner CHINA NAT OFFSHORE OIL CORP