Hydrofracture plugging mechanisms and evaluation methods during temporary plugging and diverting fracturing

Abstract

This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Multi-Fracture Growth Law for Temporary Plugging and Diversion Fracturing of Horizontal Well with Multiple Clusters in Shale Reservoir

“…Zhang et al [12] identified the concentration of plugging agents as the primary controlling factor influencing the plugging position and the expansion of diversion fractures. Regarding the mechanism of temporary plugging and pressure buildup, Wang [2] and Shi et al [13] qualitatively pointed out that fracture mouth plugging changes the circumferential stress around the wellbore, fracture internal plugging changes the closure stress of the fracture, and fracture tip plugging hinders fluid stress transmission, thus achieving fracture arrest.…”

Experimental Investigation of the Growth Law of Multi-Fracture during Temporary Plugging Fracturing within a Stage of Multi-Cluster in a Horizontal Well

“…To date, several studies related to the temporary plugging fracturing technique have been carried out through experimental and numerical methods [12][13][14][15][16][17][18][19][20]. Jin et al [12][13][14][15] studied the influence of the combination and concentration of temporary plugging agents on fracture propagation in the fracturing process of open hole vertical wells through experimental simulation, and came to the conclusion that a high concentration of temporary plugging agent, and multi-particle particle or fiber + particle temporary plugging agent can achieve better plugging effect.…”