An offline cementing device and offline cementing method

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The offline cementing device and method solve the problem of wasted drilling rig resources caused by online cementing, enabling the drilling rig to move between multiple wells, improving drilling efficiency and reducing drilling rig leveling time.

CN116291305BActive Publication Date: 2026-04-14WEFIC OCEAN EQUIPMENT MANUFACTURING CO LTD

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Patent Information

Application Number: CN202310262097.2
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2023-03-17
Publication Date: 2026-04-14
Estimated Expiration: 2043-03-17

Application Information

Patent Timeline

17 Mar 2023

Application

CN202310262097.2

14 Apr 2026

Publication

CN116291305B

IPC: E21B33/13; E21B33/03; E21B33/05; E21B33/04

CPC: E21B33/13; E21B33/03; E21B33/04; E21B33/05; Y02E10/10

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Application Domain

Geothermal energy generation Sealing/packing

Technology Topics

Isolation valve Line tubing

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AI Technical Summary

Technical Problem

Existing online cementing methods result in wasted drilling rig resources, lost drilling time, ineffective resource utilization, and reduced drilling efficiency.

Method used

The use of offline cementing equipment, including casing hangers, sealing devices, cementing heads, and downhole isolation valves, forms a new well control barrier. The drilling rig can move between multiple wells to carry out drilling operations while maintaining the well control barrier during cementing.

Benefits of technology

It enables offline cementing, reduces drilling rig leveling time, improves drilling efficiency, and allows the drilling rig to move between multiple wells for drilling operations, making full use of resources.

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Abstract

The application provides an offline cementing device and an offline cementing method, and relates to the technical field of oil and gas development.The offline cementing device comprises an offline cementing device assembly, a conversion short circuit, a cementing head, a casing hanger, a sealing device and a downhole isolation valve.The casing hanger is used for suspending a casing in a well.The cementing head, the conversion short circuit, the offline cementing device assembly and the casing hanger are sequentially and fixedly connected from top to bottom.The sealing device is used for sealing an annular space close to a wellhead.The cementing head is used for connecting a cementing cement pipeline.The scheme provided by the application can fully utilize resources and improve drilling efficiency.

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