Casing pipe automatic grouting bypass-type bump-pressure device

Abstract

The invention relates to a casing pipe automatic grouting bypass-type bump-pressure device, and aims to solve the problem that work intensity and products are increased due to the fact that existing devices used in cement job on an oil field need to be installed respectively. The casing pipe automatic grouting bypass-type bump-pressure device is characterized in that an upper guide holder (3) and a lower holder (4) are fixed on the inner wall of an outer cylinder (1) through screws, flow control valves (5) are arranged in guide holes of cross sections of the upper guide holder (3) and the lower holder (4), and a self-filling hole (11) is formed in an axial center of the flow control valves (5); the left end of the flow control valves (5) is connected to a baffle (14), a through hole is formed at the center of the baffle (14), an elastic clamp spring is arranged on the outer wall of the baffle (14), and the baffle (14) is fixed on the outer cylinder (1) through a shear pin (6). According to the casing pipe automatic grouting bypass-type bump-pressure device, a cement job operation procedure is simplified, work intensity of operating personnel is lowered, and thus work time is reduced.

Description

technical field [0001] The invention relates to the field of oil fields, in particular to a casing automatic grouting bypass type bumper. Background technique [0002] The floating hoops, casing centralizers, swirl generators, mud scrapers, etc. used in the existing oilfields are separate devices, which should be used together and installed separately in the operation, which not only increases the work intensity of the operators, but also increases the The cost of the product; at the same time, because the above products cannot be guaranteed to be produced by the same manufacturer, the quality and functional coordination cannot be guaranteed, so the success rate of cementing operations is not high. Contents of the invention [0003] In order to overcome the problems that the devices used in cementing operations in existing oilfields need to be installed separately to increase the working intensity and product cost, and to reduce the success rate of cementing, the present i...

AI Technical Summary

Problems solved by technology

[0002] The floating hoops, casing centralizers, swirl generators, mud scrapers, etc. used in the existing oilfields are separate devices, which should be used together and installed separately in the operation, which not only increases the work intensity of the operators, but also increases the The cost of the product; at the same time, because the above products cannot be guaranteed to be produced by the same manufacturer, the quality and functional coordination cannot be guaranteed, so the success rate of cementing operations is not high

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