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Keywords: natural fracture
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2061
... & gas natural fracture reservoir simulation edfm simulator downhole sensor hydraulic fracturing temperature distribution setup interpretation wellbore dts temperature data complex fracture network schematic view temperature sensing technical conference discrete fracture model ARMA 21...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2079
... natural fractures caused by injected fluid is treated as the main reason for casing deformation problems. Generalized shear activation criterion is used to analyze the reactivation of natural fracture. According to the calculated results, the slippage of natural fracture ranges from 0mm to 60mm. A higher...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1335
... roughness analysis direction reservoir characterization fracture characterization joint surface apparent dip reservoir geomechanics upstream oil & gas natural fracture roughness parameter normal stress lidar scan shear strength shear direction rock joint roughness digitization basic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1967
..., mechanical, hydrological, and chemical processes control the behavior of enhanced geothermal systems (EGS). These processes occur over a wide range of length and time scales. EGS reservoirs are typically located in crystalline rock masses with low natural permeability and preexisting natural fractures...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1221
... ABSTRACT: Acidizing is a safety, economic and effective stimulation technology in naturally fractured carbonate reservoirs with ultra-depth and high closure stress. The goal of acidizing for such reservoirs is to connect more natural fractures and create flow channel for oil and gas flow under...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2127
... ABSTRACT: Borehole breakout has always been a challenging problem in drilling, especially in fractured and weak formations. Natural fractures are an important factor that affects wellbore breakout, but the traditionally used bedding plane models are not sufficient to capture borehole breakout...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2155
... ABSTRACT: The natural fractures and fracturing parameters in tight sandstone reservoirs are of great significance for the formation of complex fractures. By using finite element method, combined with geological characteristics and in-situ stress field analysis of Qiulin block, a numerical...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1197
... Battery Alcove. Our measurements used a triaxial direct-shear method that fractures samples along targeted planes to study natural fracture properties. Measurements included intact and residual strength, permeability, stress-dependent aperture, and rock dilation with shear displacement. Here we present...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1213
... ABSTRACT: In this study, hydraulic fracturing (HF) operations are re-modelled with discrete fracture network(DFN) approach taking into account natural fractures by input parameters utilized in FracMan software. HF operations are mainly designed by core data from wells. This paper presents...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1649
... discrete fracture model) method was applied to efficiently model hydraulic and natural fractures in shale reservoirs. The different combinations of uncertain reservoir and fracture parameters were effectively captured through performing assisted history matching. We present an example of well spacing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1651
... this challenging plugging effect, especially considering the existence of natural fractures. Hence, an efficient model to fill this gap is very important to optimize the fracture design. In this study, a pseudo three-dimensional fracture propagation model, which fully couples elastic deformation of the rock...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1654
... ABSTRACT: An efficient numerical method using simple structured grids for accurate modelling of shale production with complex hydraulic fractures and natural fracture networks is very important to evaluate the impacts of frac hits. In this study, we applied a powerful non-intrusive EDFM...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1725
... ABSTRACT: The reactivation degree of natural fractures is controlled by hydraulic fracturing, so as to improve the effect of hydraulic fracturing. In this paper, a large-size true three-axis simulation experiment is used to study the mechanism and factors of cyclic variable loading fracturing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1872
... ABSTRACT: Hydraulic fractures (HFs) are expected to communicate multiple natural fractures (NFs) to form a complex fracture network in multi-stage fracturing in a horizontal well. Thus, the interaction mechanism between multiple HFs and NFs should be revealed. In this study, a three-stage...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1303
... ABSTRACT: Tight naturally fractured sandstone reservoir plays an important role in modern oil and gas development. However, it suffers from stress sensitivity damage due to well-developed natural fractures. To understand it, this paper introduced transient pressure pulse decay test (PDP...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1340
... ABSTRACT: The reorientation of local principal stresses largely depends on the drainage range and extent associated with complex hydraulic and natural fractures. In this regard, an iteratively coupled three-dimensional (3D) fluid flow and geomechanics model is adopted to simulate the local...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1387
... ABSTRACT: Application of diagnostic fracture injection tests (DFIT) are used in unconventional reservoirs to determine reservoir characteristics for future fracture design and production. The presence of natural fractures can heavily influence the pre- and post-shut-in pressure data obtained...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1416
... the primary hydraulic fracture crosses a pre-existing natural fracture provides a tensile body force for hydraulic fracture branching. The proposed model enables us to identify and optimize the key parameters that govern hydraulic fracture branching in a three-dimensional space. 1. Introduction Hydraulic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1146
... ABSTRACT: Hydraulic fracturing is a promising stimulation technique to enhance oil production of unconventional reservoirs. Natural fractures, as an important feature of unconventional formations, have a great influence on performances of hydraulic fracturing. The success of hydraulic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1148
... orientations of hydraulically conductive fractures are calculated for rock masses surrounding inclined wells with varied trajectories. Taking the relative amount of fractures becoming hydraulically conductive due to stress concentration as a qualitative measure of the efficiency of drilling naturally fractured...

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