Composite volume fracturing system for continental facies shale reservoir

• Main Authors: LI YAOHUA, ZHANG JUNFENG, XU YINBO, XU XINGYOU, LIU CHANG, LIU WEIBIN, CHEN SHAN, TONG LIHUA, BAI JING
• Format: Patent
• Language: Chinese; English
• Published: 19.11.2021
• 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 embodiment of the utility model provides a composite volume fracturing system for a continental facies shale reservoir, and relates to the technical field of geological resource exploration. The composite volume fracturing system is arranged on the ground of a continental facies shale reservoir and located around a well mouth of a fracturing target well. A cable pitching perforation device is used for lowering a bridge plug and a perforating gun to a setting position and a perforation layer through the target well and enabling the bridge plug to be ignited and set and a perforating bullet to be ignited to excite multi-cluster perforation. The supercritical CO2 injection device is connected with a wellhead of a target well and is used for injecting supercritical CO2; the hydraulic injection device is connected with a wellhead of a target well and used for injecting different types of sand-carrying fracturing fluid. And the liquid N2 mixing and injecting device is connected with the wellhead of the target w