Method and system for evaluating fault sealing performance in geological period

• Main Authors: HONG LIANG, XIE MINGXIAN, WEI PINGSHENG, ZHANG YAJUN, SU YUPING, JING ZIYAN, LI JUAN, ZHANG BIN, CHEN GUANGPO
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention provides a method and a system for evaluating fault sealing performance in a geological period. The method comprises the steps of: collecting petroleum seismic exploration data; establishing an underground fault model according to the petroleum seismic exploration data, and calculating the fault displacement of a fault and a fault dip angle value and the vertical fault displacement of each point on the section; determining the position of a space projection window of a to-be-evaluated target layer on the section according to the underground fault model, and selecting a calculation point on the section to be subjected to sealing performance evaluation; calculating a fault dip angle correction factor of each point on the section; calculating a shale content ESGR value of an effective fault rock at the calculation point; calculating a normalized activity rate of each point on the section in the geological period according to a fault activity rate; calculating a parameter Pf representing the fault s