Modeling multi-stage twisted hydraulic fracture propagation in shale reservoirs considering geomechanical factors

Y. Jang, J. Kim, T. Ertekin, W. M. Sung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

To model hydraulic fracture propagation in naturally fractured reservoirs, fracture propagation is generally assumed to be a single planar fracture propagated only in the vertical direction from a horizontal well, regardless of the presence of natural fractures. In this paper, we developed a multi-stage hydraulic fracture propagation model using a twisted multiple planar fracture that is able to describe the propagation of hydraulic fractures more realistically. In propagating hydraulic fractures, we used two criteria: maximum tangential stress, to determine the fracture initiation angle, and whether a hydraulic fracture passes through a natural fracture. The developed model was used with a commercial reservoir simulator through grid mapping in the form of a discrete fracture network using microseismic data. The results of the verification matched the experimental results well for various intersection angles and maximum horizontal stress directions. In the investigation of the direction of maximum horizontal stress, the frictional coefficient of the fracture interface, and fracture orientation, hydraulic fracture propagation modeling results showed that the hydraulic fracture passed through a natural fracture, and thereafter propagated in a manner suitably consistent with the theoretical results, based on a fracture interaction criterion. After confirming the twisted multiple planar fracture model suggested in this work, discrepancies were found in the fracture connectivity and the stimulated reservoir volume. This indicates that the twisted multiple planar fracture approach, which is more realistic in terms of fracture propagation, is extremely important in evaluating the initial gas in place, calculated according to the stimulated reservoir volume.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Eastern Regional Meeting 2015, ERM 2015
PublisherSociety of Petroleum Engineers (SPE)
ISBN (Electronic)9781613994252
Publication statusPublished - Jan 1 2015
Event2015 SPE Eastern Regional Meeting, ERM 2015 - Morgantown, United States
Duration: Oct 13 2015Oct 15 2015

Publication series

NameSPE Eastern Regional Meeting
Volume2015-January

Other

Other2015 SPE Eastern Regional Meeting, ERM 2015
CountryUnited States
CityMorgantown
Period10/13/1510/15/15

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Jang, Y., Kim, J., Ertekin, T., & Sung, W. M. (2015). Modeling multi-stage twisted hydraulic fracture propagation in shale reservoirs considering geomechanical factors. In Society of Petroleum Engineers - SPE Eastern Regional Meeting 2015, ERM 2015 (SPE Eastern Regional Meeting; Vol. 2015-January). Society of Petroleum Engineers (SPE).