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Keywords: aperture
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Proceedings Papers

Paper presented at the 3rd International Discrete Fracture Network Engineering Conference, June 21–25, 2021
Paper Number: ARMA-DFNE-21-2340
...-surfaced constant (effectively homogenous) and rough-surfaced varying aperture fractures. The use of 3D printing allows for the identical geometries for both the fracture sample and numerical mesh to be prepared. Laboratory flow tests over a range of hydraulic gradients were conducted through the printed...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0294
... enrich the conventional finite-element approximation space, the position and direction of the fractures is independent from the underlying simulation elements. Several parametric studies are presented to demonstrate the distribution of fracture aperture and the effect of mud leak-off on the fluid...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0298
... wells in the field. A key factor impacting stimulated reservoir width in both models is the variation in primary natural fracture orientations. Upstream Oil & Gas natural fracture complex reservoir aperture hydraulic fracturing orientation stimulation bearinger simulator fracture...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0299
... aperture vertical fracture visibility fracture visibility natural fracture normal stress horizontal well vertical well borehole imaging orientation Horizontal Image vertical image fracture fracture intensity bearinger horizontal borehole image log intensity 1. INTRODUCTION Fractures...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0362
... with associated apertures in a three-dimensional domain. Considering both flow and deformation, processes in the fractures are coupled with processes in the surrounding host rock. Flow is assumed to be governed by Darcy’s law both in the fractures and the matrix. Fracture reactivation is based on a Mohr-Coulomb...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0422
... jrc distribution aperture fracture network total flow rate realization case 1 rock fracture Fracture Surface Roughness Rock Mech heat transfer surface roughness rock matrix macroscopic fluid flow fracture 1. INTRODUCTION Fractures in rock masses often provide major conduits through...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0426
... allows representation of a discrete fracture network (DFN) within a rock mass. Fracture aperture and permeability are allowed to vary with fluid pressure, according to the Bandis constitutive model. Pressure diffusion is permitted in the fractures and rock matrix, including hydraulic interactions between...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0496
... aperture high aspect ratio aspect ratio Rio de Janeiro equation equivalent property finite element formulation permeability fracture 1. INTRODUCTION The presence of fracture networks distributed in an intact rock somewhat influences the hidro-mechanical response of the geological formation...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0571
... imaging and petrographic analysis. Samples were then tested to determine their mechanical and hydraulic stress dependence. Results were fit with a semi-logarithmic closure model that relates fracture aperture change to applied stress and good agreement was found with the results of other studies...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0761
... software) software to investigate the effects of various process parameters, like fracture aperture size, fracture transmissibility, and dynamic permeability to optimize the production performance of the EGS. The most optimal position of wells in the EGS has also been studied. The findings of this study...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1014
... processes in large-scale, regulatory-focused models by providing a basis for estimating upscaled flow and transport parameters that simultaneously consider smaller scale processes like fracture orientation, aperture variability, and flow channeling that affect transport behavior through the network. Twenty...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1384
... permeability requirements for geothermal reservoirs and for fluid flow in fractured aquifers and aquifers bounded by faults. Reservoir Characterization Upstream Oil & Gas rock elastic property hydraulic fracturing fracture size fracture characterization aperture microseismic event volumetric...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0950
... ABSTRACT: Current techniques for analyzing fracture data on attributes such as dip and aperture acquired from well-logs and scan lines treat them separately from the spacing values at which they are recorded. As a consequence, a power-law cumulative frequency for fracture apertures...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0784
..., geometry and aperture distribution. The containment mechanism of propagating fracture by production wells is also investigated, and the simulation results clearly indicate the risk of hydraulic fracture intersecting the drift is minimum when producing wells exist in the neighborhood. hydraulic...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1016
... sample (siltstone) was analyzed in several flow-experiments at various effective stresses. A numerical model of the experiment was fitted to the obtained experimental results by a numerical inversion of the initial mechanical aperture and contact ratio of the fracture. Once the fracture stiffness...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1296
... ABSTRACT: It has been observed that groundwater flow through fractures is channelized due to variations in fracture aperture, fracture roughness and different fracture intersections. Nevertheless, a common practice in DFN modelling is to model each fracture as hydraulically homogeneous, which...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1213
..., and results, strengths and shortcomings of the proposed procedures are discussed. orientation variation consideration hydraulic fracturing aperture DFN sub-parallel fracture frequency fracture size distribution fracture network larger fracture Upstream Oil & Gas representation...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1092
... the Unified Pipe Network Method (UPNM). The effects of rock mass properties as joint aperture, roughness, dip and dip angle are considered. Barton-Bandies joint model is used to assign joint roughness (JRC) in the modeling. JRC are generated by a gaussian distribution model and the apertures of rough fracture...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-1377
... to various working models for observed time varying frequencies. Resonances within the fluid connected fracture network may develop and give an indication of the fluid connected length and mechanical aperture within the rock mass. Episodic slip or opening of the fracture mesh may create a valve-like...
Proceedings Papers

Paper presented at the 2nd International Discrete Fracture Network Engineering Conference, June 20–22, 2018
Paper Number: ARMA-DFNE-18-0774
... Simulation hydraulic fracturing aperture propagate investigation HF propagation differential stress intersection interaction Artificial Intelligence Injection point natural fracture plane hydraulic fracture propagation tensile strength fracture 1. INTRODUCTION Hydraulic fracturing...

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