Improved stress determination procedures by hydraulic fracturing
Subtitle: rock fracture extension in hydraulic fracturing for conditions where the principal stresses are inclined to the axis at the pressurized borehole : final report to the U.S. Geological Survey on research carried out under grant no. USDI-14-08-0001-17775
By: by Yoshiaki Mizuta ... [et al.]
Contributors: Mizuta, Yoshiaki.; Geological Survey (U.S.); University of Minnesota. Mineral Resources Research Center.
Series: Open-file report -- 80-1171.; Open-file report (Geological Survey (U.S.)) -- 80-1171.
Publisher: U.S. Geological Survey
Published: 1980
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Rock mechanics.; Rocks -- Testing.
Notes: "Mineral Resources Research Center, Department of Civil and Mineral Engineering, Institute of Technology, University of Minnesota."

"April 1980."

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1981?]. 3 microfiches ; 11 x 15 cm.

Includes bibliographical references.