Slurry self-circulation cooling system for drilling of marine exploration high-temperature well

By employing a self-circulating mud cooling system for drilling high-temperature wells in marine exploration, multi-stage series cooling modules and intelligent control were used to solve the leakage risk and cooling efficiency problems of the mud cooling system, achieving efficient and reliable mud temperature control and improving the continuity and intelligence level of drilling operations.

CN121612031APending Publication Date: 2026-03-06四川省能源地质调查研究所
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Patent Information

Application Number
CN202511815296.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing marine drilling mud cooling systems suffer from leakage risks, uncontrollable cooling efficiency, low system reliability, and inconvenient maintenance, making it difficult to achieve precise automated control.

Method used

A self-circulating cooling system for drilling mud in high-temperature wells for marine exploration was designed, including a pre-filter unit, a cooling unit, and a monitoring unit. It adopts multi-stage series cooling modules, seawater countercurrent heat exchange, and intelligent control, and integrates leakage detection and automatic switching functions to achieve redundant design and closed-loop control.

Benefits of technology

It effectively prevents mud leakage, improves system reliability and ease of maintenance, ensures precise control of mud temperature, and enhances the continuity and intelligence of drilling operations.

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Abstract

The invention discloses a mud self-circulation cooling system for drilling of a marine exploration high-temperature well, which comprises a front filter unit, a cooling unit, a seawater circulation unit and a monitoring unit, and is characterized in that the front filter unit adopts a parallel double-pipeline design with an electric valve to realize non-stop switching; the cooling unit is composed of a plurality of box bodies connected in series, and a U-shaped connecting piece of the slurry coil pipe is externally arranged to facilitate maintenance. The monitoring unit collects data through a temperature sensor, a pressure sensor, a flow sensor and a leakage sensor, the cooling temperature is adjusted by controlling the rotating speed of the sea water pump after the data are analyzed through the processing module, and a filtering pipeline is automatically switched. The problems that a traditional cooling mode is high in pollution risk, uncontrollable in temperature and difficult to maintain are solved, and the device has the advantages of being environmentally friendly, accurate in control and capable of achieving online maintenance.
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