Slurry preventing assembly and packing system
A technology for preventing mud and components, applied in the direction of sealing/isolation, wellbore/well components, and production fluids, etc., can solve the problems of low success rate of ground cracking stress measurement, blockage of high-pressure pipelines, etc., to prevent mud backflow and avoid The effect of clogging and improving the success rate
Active Publication Date: 2019-06-21
INST OF GEOMECHANICS
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Problems solved by technology
[0005] The purpose of this application is to provide an anti-mud assembly and an isolation system including the anti-mud assembly to solve the problem existing in the prior art that the high-pressure pipeline is blocked by mud backflow in the fracturing section during the downhole process, resulting in Technical Problems of Low Success Rate of Ground Stress Measurement in Deep Hole Hydraulic Fracturing
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[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them.
[0031] The components of the embodiments of the invention generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.
[0032] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In the description of the present invention, it should be noted that the...
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The invention relates to the technical field of hydrofracturing in-situ stress measurement, in particular to a slurry preventing assembly and a packing system. The slurry prevention assembly is used for preventing slurry for a fracturing section in deep hole hydrofracturing in-situ stress measurement and structurally comprises a pressure conduction sheet and a filter screen. According to the slurry preventing assembly and the packing system, the pressure conduction sheet is arranged on the outer wall of a fracturing section connecting pipe and corresponds to a water inlet and outlet hole of the fracturing section connecting pipe, and the pressure conduction sheet has certain strength, so that the effect of blocking the external slurry at the water inlet and outlet hole can be effectively achieved; the filter screen is arranged in the water inlet and outlet hole, a fracturing section rock fracturing test is carried out after well logging is completed, the pressure conduction sheet is crushed to enable the pressure conduction sheet to be fractured and conducted, and then a test is carried out; and in the process of the fracturing section rock fracturing test, the filter screen formsan inner-layer slurry preventing device, so that the slurry can be blocked, and the success rate of the test is increased.
Description
technical field [0001] The present application relates to the technical field of hydraulic fracturing stress measurement, in particular to a mud-proof component and a sealing system. Background technique [0002] The interference of mud in the hydraulic fracturing stress measurement directly affects the success or failure of the test experiment, so the downhole anti-mud technology is an important auxiliary technology used in the hydraulic fracturing stress measurement. When measuring hydraulic fracturing in-situ stress in mud wells and deep wells, due to the influence of thick mud, oil, plant roots, stems and leaves, and sealing material fragments in drilling, it is necessary to check the high-pressure valves, pipelines, air holes, and weep holes in the well. , water inlet, etc. are designed to prevent mud and impurities from clogging. [0003] The existing hydraulic fracturing ground stress measurement system is mainly designed for the downhole anti-mud impurity control de...
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IPC IPC(8): E21B47/00E21B33/122E21B43/26
Inventor 吴满路张重远
Owner INST OF GEOMECHANICS