A device and method for preparing a salt-containing reservoir natural outcrop rock sample and the rock sample

By using a preparation method that employs flexible material isolation and wellbore positioning, the problems of dissolution and positioning of outcrop rock samples from salt-bearing reservoirs during the preparation process were solved, thereby improving the preparation qualification rate and the accuracy of fracturing experiments.

CN122409267APending Publication Date: 2026-07-17CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot effectively prevent failures caused by dissolution during the preparation of outcrop rock samples from salt-bearing reservoirs, and inaccurate wellbore positioning affects the accuracy of fracturing experiments.

Method used

Natural outcrop samples were isolated using flexible materials, and the wellbore was placed in the center of the rock sample using a preparation device. Adhesive was used to fix the wellbore to prevent dissolution and keep it vertical, thus preparing outcrop rock samples of salt reservoirs.

Benefits of technology

It improved the qualification rate of outcrop rock samples from salt-bearing reservoirs, ensured the accuracy and efficiency of fracturing experiments, simulated open-hole fracturing conditions, and made the preparation more standardized and convenient.

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Abstract

本发明公开了一种含盐储层天然露头岩样的制备装置、制备方法及制得的岩样和应用,涉及油气田开发技术领域,所述制备装置包括:支撑部件和定位部件;所述支撑部件为两个;每个支撑部件分别包括定位轴和支撑面板,支撑面板分别设置在定位轴两侧和底部;所述定位部件包括定位杆、定位环和井筒盖;定位杆两端设置定位环,定位环套于定位轴外,与定位轴过渡配合,定位环和定位轴之间可滑动;所述定位杆中心位置设置井筒盖,井筒盖中心设置通孔,通孔的内径为井筒外径,通孔的顶部设置环状凸台,所述凸台的内径小于井筒外径。本发明提供的含盐储层天然露头岩样的制备装置和方法可有效提高含盐储层天然露头岩样制备的合格率,进而提高压裂实验的准确性。
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Citation Information

Patent Citations

  • Rock fracturing simulation test specimen with crack, preparation method for rock fracturing simulation test specimen, simulation test apparatus and simulation test method

    CN105890998A

  • Perforation rock core preparation method for carrying out hydraulic fracturing physical simulation experiment based on natural outcrop

    CN110763532A