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3225044 
Book/Book Chapter 
An experimental study of interaction between hydraulically induced and pre-existing fractures 
Blanton, TL 
1982 
Society of Petroleum Engineers 
Richardson, TX 
2015 SPE hydraulic fracturing technology conference 
English 
is a chapter of 3227282 2015 SPE hydraulic fracturing technology conference
Hydraulic fracturing experiments have been performed in the laboratory in prefractured material under triaxial states of stress. Tests have been run on naturally fractured blocks of Devonian shale as well as blocks of hydrostone in which the angle of approach of the hydraulic fracture to the prefracture was varied in a systematic way. It was found that hydraulic prefracture was varied in a systematic way. It was found that hydraulic fractures tend to cross preexisting fractures only under high differential stresses and high angles of approach. In most cases the hydraulic fractures were either diverted or arrested by the pre-existing fractures. 
SPE Unconventional Gas Recovery Symposium 
Pittsburgh, PA 
May 16-18, 1982