Device for plugging perforated holes to simulate downhole conditions
A technology for simulating wells and conditions, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of difficulty in effectively producing reservoirs, inability to pull out construction strings, and high construction costs, achieving convenient operation, reliable performance, and simple structure. Effect
Active Publication Date: 2016-06-01
CHINA UNIV OF PETROLEUM (BEIJING) +2
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Problems solved by technology
Due to the large thickness of the reservoir, conventional stimulation technologies are difficult to effectively develop all the reservoirs. In China, packers, layered fracturing valves, hydraulic jet technology, and fast drilling bridge plugs are mainly used to achieve staged stimulation. Disadvantages such as inability to lift out the column, high construction cost, and high engineering risk
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[0018] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0019] like figure 1 As shown, the perforation plugging device 100 for simulating downhole conditions of the present invention includes a high-pressure power device 1. In this embodiment, the high-pressure power device 1 is a high-pressure pump truck or a high-pressure pump; the outlet 11 of the high-pressure power device 1 A temporary blocking agent addition control device 2 is connected, and the outlet of the temporary blocking agent addition control device 2 is sealed and connected to the top of a vertically arranged double-layer casing 4 through a union pipeline 3. In this embodiment, as figure 2 As shown, the material of the outer casing 41 of the double-layer casing 4 is P110, the material of the inner casing 42 of the dou...
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The invention relates to a perforation hole blocking device simulating an underground condition. The perforation hole blocking device simulating the underground condition comprises a high-pressure power device. An outlet of the high-pressure power device is connected with a device for adding and controlling a temporary blocking agent. An outlet of the device for adding and controlling the temporary blocking agent is connected to the top portion of the two-layer vertically-arranged sleeve through a union pipeline in a sealing mode. The bottom of the two-layer sleeve is sealed. A penetrating through hole is formed in the side wall of the two-layer side wall of the two-layer sleeve. The lower portion of the two-layer sleeve is arranged in a liquid storage container in a hung mode. An automatic temperature control device is arranged at the bottom of the liquid storage container. A container opening is formed in the bottom of the side wall of the liquid storage container. The container opening is connected to an inlet of the high-pressure power device through a connecting pipe. The perforation hole blocking device simulating the underground condition has the advantages of being simple, convenient to operate and reliable in performance; the bearing capacity and blocking effect of materials used for blocking the perforation hole under the underground condition can be elevated effectively, the application range of the perforation hole blocking device simulating the underground condition is wide, and experiments of different kinds of temporary blocking agents blocking the perforation hole can be simulated.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a perforation hole plugging device for simulating downhole conditions. Background technique [0002] For reservoirs with thicker reservoirs, casing perforation is mostly used to complete wells, which creates good conditions for later downhole operations. Due to the large thickness of the reservoir, conventional stimulation technologies are difficult to effectively develop all the reservoirs. In China, packers, layered fracturing valves, hydraulic jet technology, and fast drilling bridge plugs are mainly used to achieve staged stimulation. The column cannot be lifted out, the construction cost is high, and the project risk is high. Through technical research and on-site process tests in recent years, a tool-free layered diversion transformation technology has been formed. This technology temporarily plugs the perforation blasthole by putting in a degradable tempo...
Claims
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IPC IPC(8): G01N33/00
Inventor 周福建张福祥刘雄飞彭建新周志澎周建平邹国庆郇国庆王磊谭艳新李秀辉
Owner CHINA UNIV OF PETROLEUM (BEIJING)