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Keywords: stimulation
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1119
... ABSTRACT: A reliable computational tool is essential for the design, prediction and interpretation of dynamic stimulation jobs. In this work we present a DEM-continuum mechanics modeling approach to simulate dynamic stimulation inside boreholes using a standalone DEM-based micromechanics model...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1241
... stimulation of pre-existing fractures. We demonstrate that the change in stratigraphic depth along the lateral portion of the Niobrara A well causes it to traverse regions of both high and low values of the least principal stress. As a result of this, the implications of microseismic data for hydraulic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1920
... is changing with stimulation. We showed these curves for DAS data acquired in a treatment well in the Marcellus Shale. We observed a varying slope (infers varying flow rate) of cumulative slurry for inter and intra-stage perf clusters reacting to changes in proppant concentration. The cumsum-time curves...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2050
... ABSTRACT: Implementing enhanced geothermal systems (EGS) will require improvements in understanding stimulation of crystalline rock to create appropriate flow pathways, and the ability to effectively simulate both the stimulation and the flow and transport processes in the resulting fracture...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1932
... ABSTRACT: Hydraulic stimulation aims to improve fluid circulation in rocks that are initially not suitable for the use as a heat exchanger. We report on an ongoing experiment in the research mine Reiche Zeche, Freiberg, Germany, focusing on the predictability of seismic events induced by fluid...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1051
... ABSTRACT: Casing damages have been found in many stimulated wells worldwide. While other mechanisms such as thermal and chemical can be responsible, this study focuses on geomechanical and mechanical contributions to casing damage during and after hydraulic fracturing. Through 2D numerical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1895
... ABSTRACT: Reservoir stimulation and hydraulic fracturing in oil-and-gas reservoirs has become common practice and the techniques are continuously improved. However, directly applying the same techniques to extract geothermal energy from low permeability crystalline rocks (i.e., Enhanced...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0106
... ABSTRACT: It is commonly assumed that the dimensions of an induced microseismic cloud around an Enhanced Geothermal System (EGS) well delineate the “stimulated volume” in which permeability has been increased. This interpretation derives from a self-propping fracture model, wherein shear slip...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0130
... to define an integrated view of the reservoir. We apply the approach on a data set from a hydraulic fracture stimulation in the Marcellus and show that integrating fracture models with geomechanical simulation can forecast zones of microseismic activity, identified by regions of high deformation and high...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1557
... ABSTRACT: Near-realtime seismic monitoring of fluid injection allowed control of induced earthquakes during the stimulation of a geothermal well near Helsinki, Finland. The injection well was drilled down to 6.1 km-depth into Precambrian crystalline rocks. The well was deviated 45° from...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1611
... in operations when dealing with deep and tight, unconventional, and subsalt reservoirs, depleted zones, drilling horizontal wells specially in the direction of the minimum stress when intended to place multistage hydraulic fractures. The challenges will increase in the areas when stimulating zones have high...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0504
... as an efficient approach for providing detailed understanding of fracture reservoir development during stimulation. 1. INTRODUCTION Driven by many decades of experience in its use, hydraulic fracturing stimulation represents a proven means to enhance rock mass permeability in tight reservoir rocks. The use...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1822
... are characterized by a wide distribution of inclination angle from 27° to 60° with the increasing horizontal stress difference, showing that it is less dominated by in-situ stresses. Branches are able to initiate and propagate at contacted fracture surface with local shear concentration. Shear stimulation can...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1807
... ABSTRACT: A series of tracer tests have been performed to characterize the stimulated fracture network in Experiment 1 of the EGS Collab project. In the present study, we use a brute-force, Monte Carlo approach to model one of the conservative tracer tests and characterize the flow patterns...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2084
... and production parameters. In this work, we report results from detailed numerical modeling of the cyclic steam stimulation of a heavy oil reservoir. A fully coupled thermo-hydro-mechanical finite element model has been employed for characterizing the complicated process involving multiphase fluid flow, heat...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2069
... ABSTRACT: The Hydraulic Fracturing Field Test (HFTS) project, fielded within the Wolfcamp Formation in the Permian Basin, provides an excellent opportunity to further develop our understanding of the geomechanical response to hydraulic stimulation and associated fluid transport in shale...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2003
... of proppant and water used in well stimulation have witnessed a paradigm shift over the past few years. This paper represents a large-scale descriptive analysis of the stimulation and completion trends in the Permian Basin between the first quarter of 2013 and the second quarter of 2018. The aim...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2004
... ABSTRACT: The EGS (Enhanced Geothermal Systems) Collab project is performing stimulation and flow experiments in highly-monitored and well-characterized intermediate-scale (approximately10 to 20 meter) field test beds at a depth of approximately 1,500 meters in the Sanford Underground...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1998
... geothermal reservoir Simulation US government explosion stimulation experiment standoff distance multiple energetic source laboratory hydraulic fracturing waterless stimulation contour geometry damage zone deformation parametric study strain rate PMMA Lawrence Livermore national laboratory...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2015
... play a significant role in the hydro-mechanical behavior of sedimentary rocks. In this study, the effect of the relative orientation of the wellbore to that of the bedding planes is investigated on the pattern of reservoir recovery and subsequently, on the extent of the stimulated reservoir volume...

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