基于储层高频压力信号的裂缝识别方法

By performing frame-segmentation and weighted fusion on high-frequency pressure data, the signal distortion problem caused by water hammer effect was solved, high-precision fracture morphology parameter inversion was achieved, and the accuracy of fracturing effect assessment was improved.

CN122106583BActive Publication Date: 2026-07-17DAQING YILAI TESTING TECH SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DAQING YILAI TESTING TECH SERVICE CO LTD
Filing Date
2026-04-27
Publication Date
2026-07-17

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Abstract

本申请涉及油气开采技术领域，具体涉及基于储层高频压力信号的裂缝识别方法，该方法包括：采集压裂段在停泵渗流阶段的各组高频压力传感器数据；确定各帧压力波动的一阶差分特征以及压力包络线的阻尼衰减拟合特征，构建反映单组数据受水锤效应影响程度的第一指数；分析不同组高频压力数据序列之间的相关性，构建反映不同位置处压力响应空间一致性的第二指数；确定各组高频压力数据的偏离指数，对各组高频压力数据进行加权融合，得到综合压力数据序列；基于综合压力数据序列进行压降拟合分析，根据拟合残差判定滤失类型，并结合裂缝扩展模型反演得到裂缝形态参数。本申请提高了裂缝滤失类型判别与形态参数反演的准确度。
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