Development and Latest Research Advances of Self-Propping Fracturing Technology

Abstract

Summary Self-propping fracturing (in-situ proppant) has become an area of increasing interest in the development of fracturing technology over the past several years. In this paper, we review previous developments in this field and introduce latest research on self-propping fracturing technology. We identify the principles, key processes, and advantages behind the technology and introduce the properties of the liquids and solids involved. We developed a phase-change regulator and first carried out a physical distribution simulation test on the fluids and solids used. We also introduce the first-ever field test of self-propping fracturing liquid in volume fracturing of an unconventional oil well. This technology solves the technical difficulties associated with unconventional sand fracturing, especially those concerning the improvement of the fracture-controlled reserves. Its successful implementation provides new design concepts and advances technological change in the hydraulic fracturing industry.