Device for measuring anti-leaking and leaking-blocking performance of gel under complex stratum and application method of device

Abstract

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...

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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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