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Keywords: propagate
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0256
..., the interaction may result in HF crossing NF directly or with an offset (also referred to as a step-over), or being arrested by the NF. In the latter case, HF can dilate and propagate along the NF if fluid pressure exceeds the normal stress on the NF. The crossing/arrest behavior at the moment of fracture...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0575
..., and cracking. Results suggest that shallow collapses are observed when the temperature decreases in late autumn or cold winter. Cracks initiate and propagate in the rock mass, driven by the ice-rock interaction in cold seasons, deteriorate the structure stability and induce shallow rockfall. Knowledge of long...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0577
... (tensile) crack propagation at the tips of the etch pits. The LEFM model suggests that tensile cracks can propagate when etch pits are loaded by a crystal growth pressure on the order of 0.1 GPa. It is worth noting that this pressure range falls within the theoretically expected values for crystallization...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0562
... to the observed non-planar characteristics of the fracture morphologies. Radial boreholes with the azimuth of 30° and 45° demonstrated the ability to guide directional fracture propagation, potentially leading to the formation of multi-branch fractures. Increasing the azimuth decreases the guiding ability...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0677
... in fracture curving, intersection, and uneven growth, which poses challenges to the fracturing optimization and sustainable development of reservoirs. In this work, a coupled fracturing model considering both non-planar 3D fracture propagation and proppant transport is established based on the displacement...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0545
... fracture the studied rock below 85% of expected breakdown pressure. • The key to success is less dependent on magnitude or number of loading cycles, but more on the patterns of cycle loading and unloading process. • In both dry cyclic loading and fluid cyclic injection cases, fracture propagation...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0601
... ABSTRACT: In this paper we present a new mechanism that explains hydraulic fracture containment in the target zone. The study is based on the modelling of hydraulic fracture propagation in weak rocks and comparison of the results of propagation in the vertical direction with propagation...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2335
... ABSTRACT: Hydraulic fractures propagate when fluid pressure overcomes the minimum horizontal stress. Variations of the minimum horizontal stress with depth determine where hydraulic fractures can grow and what orientation of faults will slip. Here, we use a stress model and field data from...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0009
... ABSTRACT: Composed of gravel, matrix and the cementation surface, glutenite is different from fine-grained homogeneous reservoirs such as sandstone and shale in meso-structure. This unique structure inevitably leads to different fracture propagation characteristics. In order to study...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1296
... the casing string up to the TOC line while considering the various wellbore parameters through the use of a finite element model that includes gas hydraulic microannuli fracture propagation. A case study of a Gulf of Mexico was performed and showed that the cement sheath can experience debonding up...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1726
...°. This phenomenon can be expressed as the anisotropy effect on the hydraulic fracturing breakdown pressure. hydraulic fracturing layer thickness cylindrical stratified specimen investigation wellbore integrity strength propagate specimen Upstream Oil & Gas Thickness soft layer bedding plane...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2073
... to obtain fracture complexity in the absence of any reservoir heterogeneity. We show that competing fracture propagation can induce a heterogeneous stress state in the rock. This new heterogeneous stress state is induced by the spatial variation of the stress shadow of the propagating fractures. Multiple...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2032
... ABSTRACT: The present paper summarizes the results and implications of a laboratory study designed to measure the propagation velocity of hydraulic fractures created with low viscosity fluids. Hydraulic fracture experiments were conducted in acrylic blocks with low viscosity ink (2 cP...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-869
... Engineering propagate reservoir geomechanics geomechanical characterization natural fracture fracture network complex fracture network Reservoir Characterization horizontal stress fracture Upstream Oil & Gas fractured formation Alberta maximum horizontal stress propagation stress anisotropy...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-872
... ABSTRACT: Unconventional petroleum resources occur in formations that are layered and or contain natural fractures posing challenges to modeling of reservoir stimulation. In this paper, we use a 3D fully coupled hydro-mechanical model to analyze hydraulic fracturing propagation in a layered...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0504
.... The second half is then cast against the first half. Sandpaper attached to the PVC block provides different friction at the interface and, using a debonding agent, a cohesionless contact is obtained. In the experiments, digital image correlation (DIC) is used to monitor crack initiation and propagation...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0559
.../analytical models with finite element method software such as COMSOL Multiphysics. Further work will be required for improving enhanced geothermal production by optimizing hydro-shearing practices. 1. INTRODUCTION hydraulic fracturing displacement propagate fracture propagation Mohsen Bazargan...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-061
... formation? To consider the impacts of support pressure on the breakout pattern, the two failure modes were considered, namely: shear fracture and extensile-splitting induced breakouts. Minimum strain energy criterion was used in determining the direction of the propagating extensile cracks...

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