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An Integrated Geomechanics-Fracturing and Reservoir Simulation Workflow for Optimized Stimulated Rock Volume in the Vaca
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Shales are heterogeneous rocks, characterized by very low permeability and because of this low matrix permeability, hydraulic fracturing is a requirement to achieve economic developments. Stimulation of shales is performed by creating a Stimulated Rock Volume (SRV) where hydraulically induced fractures connect with preexisting natural fractures. The SRV efficiency will be influenced by the SRV geometry which describes the potential for creating and maintaining open fractures. Under these circumstances it becomes crucial the ability to evaluate the extent of the stimulated volumes following a hydraulic fracturing treatment. To address this, an integrated workflow embracing hydraulic fracturing modelling, reservoir geomechanics modelling and production modelling has been applied. This work describes the implementation of the general workflow from single well characterization to reservoir scale modelling applied to achieve successful stimulation treatments in Vaca Muerta Shale formation. Results are compared with in situ observations from actual treatments and microseismic monitoring of a multi-fracced horizontal well in Vaca Muerta. The work also highlights the importance of data integration at various scales in order to address fundamental aspects related to well placement for hydraulic fracturing, effects of fracturing sequences and wellbore stability during drilling as a consequence of changes induced by fracturing and production.