A shearing experiment device and method for a ram preventer of a drill pipe rotation

By designing a gate blowout preventer shearing test device for drill pipe rotation, simulating drill pipe rotation conditions, and combining hydraulic control oil pressure and gate movement stroke comparison, the problem of the inability to dynamically evaluate the shearing capacity of the gate blowout preventer in the existing technology is solved, achieving more accurate evaluation and higher safety.

CN122192716APending Publication Date: 2026-06-12CHINA NAT PETROLEUM CORP +1
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Patent Information

Application Number
CN202411832944.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing blowout preventer shear testing equipment cannot verify the shear capacity of gate blowout preventers under dynamic rotation, and cannot accurately assess their shear capacity under complex mechanical properties, leading to an increased risk of blowout accidents.

Method used

A gate blowout preventer shearing test device for drill pipe rotation was designed, including a main frame, a rotating device and a load-bearing structure. By simulating the drill pipe rotation condition and combining the comparison of hydraulic control oil pressure and gate movement stroke, the dynamic shearing capacity can be evaluated.

Benefits of technology

It enables accurate evaluation of gate blowout preventers under rotating conditions, fills the technical gap in dynamic shear testing, and improves the safety and reliability of well control devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of petroleum equipment detection and evaluation, and particularly relates to a shearing experimental device and method for a rotary rams blowout preventer of a drill pipe; the device comprises a general frame, a rotating device and a bearing structure; the bearing structure for bearing the rams blowout preventer is installed on the general frame, and the bearing structure is located above the rotating device; the rotating device for driving the drill pipe to rotate is installed on the general frame, and the rotating device can move on the general frame; the present application has the advantage that the rotating condition of the drill pipe under the rotating working condition is simulated, then the rams blowout preventer implements shearing on the drill pipe, the dynamic rotating shearing capacity evaluation of the rams blowout preventer is realized, and support is provided for verifying and improving the shearing capacity of the shearing rams.
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Citation Information

Patent Citations

  • Online diagnosis and evaluation method and system for shearing process of ram blowout preventer

    CN117404079B