Optimized approach to conduct hydraulic fracturing test on true tri-axial stress condition

Runhua Feng, Hongyu Wang, Mohsen Abdolghafurian, Nathan Tarom, Salemi Hossein, Ayman Ezdini, Ali Rezagholilou

    Research output: Chapter in Book/Conference paperConference paper

    7 Citations (Scopus)

    Abstract

    Hydraulic fracturing has been widely applied to enhance hydrocarbon recovery in oil and gas field, especially for unconventional reservoir in which the permeability is usually nano-Darcy. In the field implementation, numerical modelling is initially performed, then the field testing (i.e. minifrac test) are conducted to infer the geological parameters. However, it is vital to perform laboratory tests (i.e. rock mechanical and hydraulic fracturing tests.) to obtain the rock mechanical parameters and important observations, which helps to mitigate uncertainties and risks encountered in both simulation modelling and field testing. Thus, a series of rock mechanical tests (i.e. unconfined/confined compressive, Brazilian tensile, and semi-circular bending) were conducted. Scaling analysis and true triaxial stress cell were applied to ensure the fracture propagated at the analogues field condition. Next, the logistic experimental procedure was explained and hydraulic fracturing tests were conducted on the 10cm cubic samples under true triaxial stresses. The unpredictable results were discussed and the optimized approaches were proposed. We concluded that system leakage and unbalanced stress loading can be detected and fixed at the earlier stage to avoid the sample was damaged.

    Original languageEnglish
    Title of host publicationProceedings of the 52nd U.S. Rock Mechanics/Geomechanics Symposium
    PublisherAmerican Rock Mechanics Association (ARMA)
    Publication statusPublished - 1 Jan 2018
    Event52nd U.S. Rock Mechanics/Geomechanics Symposium - Seattle, United States
    Duration: 17 Jun 201820 Jun 2018
    http://armasymposium.org/

    Conference

    Conference52nd U.S. Rock Mechanics/Geomechanics Symposium
    CountryUnited States
    CitySeattle
    Period17/06/1820/06/18
    Internet address

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