Method for improving simulation accuracy of three-dimensional crustal stress field of fractured-vuggy reservoir

• Main Authors: LI CHUNYUE, LIU ZHIYUAN, QIN FEI, SONG ZHIFENG, LI YONG, LUO PANDENG, AN NA, HU QICHUAN, HOU FAN, ZHANG JIANJUN, YING HAILING, ZHAI KEJUN
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: DETECTING MASSES OR OBJECTS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; TESTING

The invention discloses a method for improving the simulation accuracy of a three-dimensional crustal stress field of a fractured-vuggy reservoir. The method comprises the following steps: collecting seismic data of a target block; identifying the seismic data, and finding out fault display in the seismic data; drilling at different positions of the fault according to the position of the identified fault, and taking out a fault core at the corresponding position; drilling at different positions except the position of the fault according to the identified position of the fault, and taking out a non-fault core at the corresponding position at the depth of the same fault core in the previous step; carrying out a rock mechanical parameter test experiment on the fault core and the non-fault core which are taken out, and respectively obtaining a plurality of mechanical parameters of the fault core and a plurality of mechanical parameters of the non-fault core; and obtaining the size relation of the fault core and t