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RESEARCH PAPERS: Rock Mechanics/Emerging Energy Technologies/Drilling

Fracture Analysis of Ceramic Proppants

[+] Author and Article Information
S. R. Swanson

Department of Mechanical and Industrial Engineering, The University of Utah, Salt Lake City, Utah 84112

R. A. Cutler

Terra Tek, Inc., Salt Lake City, Utah

J. Energy Resour. Technol 105(2), 128-133 (Jun 01, 1983) (6 pages) doi:10.1115/1.3230891 History: Received May 07, 1982; Revised January 05, 1983; Online October 22, 2009

Abstract

Small particles (traditionally sand) are mixed with fluid in hydraulic fracturing treatments of petroleum wells to stimulate production. The solid particles, called proppants, are used to prop open the fracture as hydraulic pressure is reduced. Deep wells can demand higher strength than provided by sand, while low specific gravity is desired to improve proppant transport. This paper considers the stress and strength analysis of proppants, and considers the use of high-strength ceramics as possible proppants. The stresses produced by interparticle contact are analyzed, which along with a failure criterion based on a critically stressed volume lead to a fracture prediction. The results show that ceramics can give adequate strength, even when used in low-density forms such as with high porosity or as hollow spheres. Laboratory tests of the effect of closure pressure on fluid permeability are seen to be in good agreement with the fracture predictions.

Copyright © 1983 by ASME
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