Bridge plug and hydraulic setting tool for squeezing and injecting cement in one-trip pipe column
By designing a hydraulic securing tool with a dual-piston structure, the complex operation of bridge plug securing and extrusion cement in deep wells is solved, and efficient operation with simple technology and convenient operation is achieved.
CN120211675APending Publication Date: 2025-06-27PETROCHINA CO LTD
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Patent Information
- Application Number
- CN202311810987.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-06-27
AI Technical Summary
Technical Problem
The existing hydraulic seat sealing and extrusion bridge plug tool cannot complete the operation of bridge plug seat sealing and extrusion cement in a pipe column in a deep well ultra-deep well, and there are problems of complex operation and inconvenient process.
Method used
A hydraulic seat sealing tool including a seat sealing device and a bridge plug is designed, adopting a double piston structure and an anti-flip structure, which can complete the seat sealing and cement filling operations by downstream of a pipe column.
Benefits of technology
It realizes a bridge plug seating and extrusion process with simple process and convenient operation. It is suitable for large-sloping wells and horizontal wells, shortens the working time and reduces construction risks.
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Figure CN120211675A_ABST
Abstract
The invention belongs to the technical field of bridge plug setting, and discloses a bridge plug and hydraulic setting tool for one-trip pipe column cement squeezing and injecting. The bridge plug and hydraulic setting tool comprises a setting device and a bridge plug body, and the setting device comprises an upper connector, a first center pipe, an upper connecting pipe and a lower connecting pipe which are sequentially connected; the piston sleeve, the shearing sleeve, the upper setting sleeve, the lower piston, the push rod and the push cylinder are arranged on the first central pipe in a sleeving manner and are sequentially connected; an upper piston is arranged in a cavity between the piston sleeve and the first central pipe, and a piston block is arranged in a cavity between the upper setting sleeve and the first central pipe; the bridge plug comprises a shearing seat, a second central pipe and a valve body mechanism which are sequentially connected, one end of the shearing seat is connected with the upper connecting pipe, the lower end of the lower connecting pipe is connected with the valve body mechanism, the second central pipe is sleeved with an upper guide ring, a locking ring seat, an upper slip, an upper cone, a sealing mechanism, a lower cone and a lower slip which are sequentially connected, and a second locking ring is fixed to the outer surface of the second central pipe. Setting, cementing and other operations can be completed through one pipe column, the technology is simple, and operation is convenient.
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