Natural fracture state dynamic monitoring method under true triaxial hydraulic fracturing and related equipment

• Main Authors: WANG LEI, WAN YANGHUI, BI ZHENHUI, WANG XINGYI, ZHANG XIN'AO, WU XIAOLONG, ZHAO GUOKAI, MAO HAIJUN, CHANG XIN, ZHENG HEBIN, GUO WUHAO, QIU GUOZHOU, JING YUXIANG, GUO YINTONG
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a method for dynamically monitoring the state of a natural fracture under true triaxial hydraulic fracturing and related equipment, relates to the field of fracture slippage and opening monitoring, and mainly aims to solve the problem that the change rule of the fracture along with various experimental parameters in the experimental process cannot be monitored in real time in the prior art. The method comprises the steps that dynamic parameters of a sample under the hydraulic fracturing condition are obtained based on a monitoring system, and the sample is a tight reservoir simulation sample with fracture characteristics; and determining the crack opening and the crack slippage of the sample based on the dynamic parameters of the sample fed back by the monitoring system. The method is used for the dynamic monitoring process of the natural fracture state under true triaxial hydraulic fracturing. 本发明公开了一种真三轴水力压裂下天然裂缝状态动态监测方法及相关设备，涉及裂缝滑移与开度监测领域，主要为解决现有技术仍不能实时地去监测实验过程中裂缝随各类实验参数的变化规律的问题。该方法