BibTex format
@inproceedings{Papanastsiou:2015,
author = {Papanastsiou, P and Atkinson, C},
publisher = {ARMA},
title = {The brittleness index in hydraulic fracturing},
url = {http://hdl.handle.net/10044/1/38827},
year = {2015}
}
Publications
Citation
RIS format (EndNote, RefMan)
TY - CPAPER
AB - We present a new definition of a brittleness index which is used as a criterion for candidate selection of rockintervals for hydraulic fracturing. The new index is a combination of material strength parameters and insitu stresses. It was derivedfrom an analytical model of hydraulic fracturing in weak formations of varying ductility. The model is based on Mohr-Coulombdislocations that are placed in the effective centres of the complete slip process that is distributed around the crack tip. The newbrittleness index varies between 0 and 1 with the one limit to correspond to brittle propagation and the other limit to a fracture thatrequires infinite energy release per unit advance. The values between 0 and 1 correspond to fracture propagation of increasingductility from brittle to small scale and finally to large scale yielding. The results are particularly interesting for predicting thepropagation of axial fractures in the horizontal direction and their confinement in the vertical direction.
AU - Papanastsiou,P
AU - Atkinson,C
PB - ARMA
PY - 2015///
TI - The brittleness index in hydraulic fracturing
UR - http://hdl.handle.net/10044/1/38827
ER -