Direct observation of hydraulic fractures
Subtitle: behavior at a formation interface
By: Norman R. Warpinski, David A. Northrop, and Richard A. Schmidt, Geotechnology Research Division, Sandia Laboratories ; prepared by Sandia Laboratories for the United States Department of Energy.
Contributors: Northrop, D. A. 1938-; Schmidt, Richard A., 1941-; United States. Dept. of Energy.; Sandia Laboratories. Geotechnology Research Division.
Series: SAND ; 78-1935; SAND (Series) (Albuquerque, N.M.) -- 78-1935.
Publisher: Dept. of Energy, [Office of the Assistant Secretary for Defense Programs], Sandia Laboratories; for sale by the National Technical Information Service
Published: 1978
Place of publication: [Albuquerque, N.M.]; Springfield, Va
Language: eng
Number of pages: 21
Subjects: Oil wells -- Hydraulic fracturing.
Notes: Contract AT (29-1)-789.

Oct. 1978.

Includes bibliographical references.