TY - GEN
T1 - A chemo-physical model for predicting post-fracking pressure build-up in pierre shale
AU - Hayatdavoudi, A.
AU - Sawant, K. G.
AU - Boukadi, F.
N1 - Publisher Copyright:
© 2015 by the Canadian Institute of Mining, Metallurgy & Petroleum and ISRM.
PY - 2015
Y1 - 2015
N2 - In this work, we found that contact between shale and water results in development of micro fractures. Based on results of experiments on Pierre shale, we conclude that appearance of micro fractures begin with saturation of capillaries, ionic and diffusive transport of water into the shale clays and once capillaries are saturated, the cause of micro fracture propagation is the conversion of ionic activity/exchange to excess pressure that did not exist before fracking. Based on these findings, the spread of micro fractures appear to be a time-dependent phenomenon which has not been addressed in the existing macro/micro fracture models.
AB - In this work, we found that contact between shale and water results in development of micro fractures. Based on results of experiments on Pierre shale, we conclude that appearance of micro fractures begin with saturation of capillaries, ionic and diffusive transport of water into the shale clays and once capillaries are saturated, the cause of micro fracture propagation is the conversion of ionic activity/exchange to excess pressure that did not exist before fracking. Based on these findings, the spread of micro fractures appear to be a time-dependent phenomenon which has not been addressed in the existing macro/micro fracture models.
KW - Capillary saturation
KW - De-bye Huckel limiting law
KW - Free energy
KW - Pitzer
KW - Pourbaix
KW - Timedependent shale/water interactions
KW - Virial coefficient
UR - http://www.scopus.com/inward/record.url?scp=85044104811&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044104811&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85044104811
T3 - 13th ISRM International Congress of Rock Mechanics
BT - 13th ISRM International Congress of Rock Mechanics
A2 - Hassani, null
A2 - Hadjigeorgiou, null
A2 - Archibald, null
PB - International Society for Rock Mechanics
T2 - 13th ISRM International Congress of Rock Mechanics 2015
Y2 - 10 May 2015 through 13 May 2015
ER -