A kind of drilling completion fluid semi-permeable membrane detection device

By designing a semi-permeable membrane detection device for drilling and completion fluids, and utilizing a drive mechanism to achieve active fixation and sealing of the core, the problem that existing devices cannot realistically simulate the high temperature and high pressure downhole is solved, thus improving the accuracy and reliability of the detection.

CN122329947APending Publication Date: 2026-07-03GABRIEL ENERGY TECHNOLOGY (TIANJIN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GABRIEL ENERGY TECHNOLOGY (TIANJIN) CO LTD
Filing Date
2026-03-31
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing drilling and completion fluid semi-permeable membrane testing devices cannot realistically simulate the high-temperature and high-pressure environment downhole, resulting in significant deviations between test data and actual results. Furthermore, core samples are prone to fluid transgression or displacement, affecting the accuracy and reliability of the evaluation.

Method used

A drilling and completion fluid semi-permeable membrane detection device was designed, including components such as a base plate, a vertical plate, an upstream chamber, a downstream chamber, and a core clamping chamber. The device uses a drive mechanism to move the piston plate and the sealing plate to actively fix and seal the core, simulating the downhole high-pressure environment and improving detection accuracy.

Benefits of technology

It achieves effective sealing of rock cores under high temperature and high pressure conditions, ensuring the true contact conditions between the semi-permeable membrane and the formation, and improving the accuracy and reliability of the detection.

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Abstract

This invention relates to the field of drilling and completion fluid semi-permeable membrane testing technology, specifically a drilling and completion fluid semi-permeable membrane testing device. The device includes a base plate, a vertical plate fixedly connected to the top surface of the base plate, an upstream chamber fixedly connected to the front surface of the vertical plate via a connecting plate, a downstream chamber and an injection cylinder fixedly connected to the top surface of the base plate, and a core holding chamber integrally connected to the top surface of the downstream chamber. The inner bottom surface of the core holding chamber has a through hole. This drilling and completion fluid semi-permeable membrane testing device provides active fixation and circumferential sealing of the core, preventing fluid migration or core displacement under high pressure. It also simulates the high-temperature and high-pressure environment downhole, improving the accuracy of drilling and completion fluid semi-permeable membrane testing.
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