Southwest Oil & Gas successfully applied after-effect perforation technology

Sinopec News Network reported on June 3, Southwest Oil & Gas successfully applied the new after-effect perforation technology in the Xujiahe Formation of Well Chongzhou 108 to effectively reduce the fracture pressure of high-stress reservoirs
.

Well Chongzhou 108 is 4900 meters deep.
The formation is tight and the fracture pressure is high.
The fracture pressure gradient is greater than 3 MPa per 100 meters.
The formation of the adjacent well is not compressed under the pressure of 109.
5 MPa, which restricts the later reservoir reconstruction
.

Southwest Oil & Gas applied the new after-effect perforating technology in this well, that is, after installing the after-effect agent on the basis of conventional perforation, the secondary detonation is formed in the perforated tunnel, which can remove the perforation compaction zone, clean the tunnel, Enhance the communication ability between the tunnel and the natural fractures of the formation
.

(Liu Xiaofeng and Zhang Yao)