A device for measuring leak-proof and plugging performance of gel in complex formations and its application method
A technology for complex formations and measuring devices, which is applied in the directions of surveying, earthwork drilling, wellbore/well components, etc. It can solve problems such as easy fracture of rock cores, and achieve the effects of ensuring test accuracy, reducing work intensity, and accurate test results
Inactive Publication Date: 2020-08-04
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0004] Aiming at the above-mentioned prior art, the present invention provides a gel performance measuring device capable of simulating a complex stratum environment, so as to solve the technical problems that the existing experimental device needs to manually drill the core and the core is easy to break
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[0046] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0047] In the embodiment of the present invention, such as Figure 1-8 As shown, a gel performance measurement device that can simulate a complex formation environment is provided, including an experimental cup.
[0048] like figure 1 As shown, the experimental cup is cylindrical as a whole, and the experimental cup includes a cup body 2 , a base 3 and a cap 1 . The base 3 and the cap 1 are fixedly connected to the cup body 2 in a detachable manner. The detachable connection in the present invention can be threaded or bolted, but in order to facilitate the manufacture of the base 3 and the cap 1, it is best to use bolts connect. The specific method of bolt connection is: make the base 3 and the cap 1 into a circular plate with a thickness of 20-25 mm, and set three, four or six evenly distributed threaded holes 17 on the edge of the cir...
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The invention discloses a device for measuring anti-leaking and leaking-blocking performance of gel under a complex stratum and an application method of the device. The device comprises an experimentcup, the experiment cup comprises a cup body, a base and a cap, and the base and the cap are fixedly connected with the cup body. The cap comprises a first cap body and a second cap body, a scaleplatehole and a pressure injection hole are formed in the first cap body, and a scaleplate is inserted into the scaleplate hole. A piston is connected to the lower end of the scaleplate and mounted in thecup body, an oil pipe hole and a water outlet hole are formed in the second cap body, and a simulated oil pipe capable of vertically freely moving is arranged in the oil pipe hole. A hollow cylindrical boss is arranged on the base, a clamping cylinder is mounted in the hollow cylindrical boss, and a liquid guiding hole is formed in the bottom of the hollow cylindrical boss and providedwith a plug. A filtering net is laid on the liquid guiding hole, a pit matched with the hollow cylindrical boss is formed in the lower end of the cup body, and the cup body is inserted in the hollow cylindricalboss. By adopting the testing device of the structure, the technological problem that as for an existing experiment device, rock cores need to be manually drilled and are prone to being broken can beeffectively solved.
Description
technical field [0001] The invention belongs to the technical field of petroleum engineering experimental equipment, and in particular relates to a device for measuring leak-proof and plugging performance of gel under complex formations and an application method thereof. Background technique [0002] Gel leak prevention and plugging technology is widely used in the field of petroleum engineering. For example, gel plugging is used in the drilling process of lost formations to improve the pressure bearing capacity of formations, and gel temporary plugging technology is used in the process of well completion and workover The purpose of layer protection, etc. However, the gel is not completely non-permeable. There is seepage under the action of the formation pressure difference, and the compaction and dehydration of the gel itself will occur. The measurement of leakage prevention and plugging performance has always been an unresolved problem. In addition, when adding gel, it i...
Claims
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IPC IPC(8): E21B33/13E21B47/00E21B47/117
CPCE21B33/13E21B47/00E21B47/117
Inventor 黄全华王成银
Owner SOUTHWEST PETROLEUM UNIV