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Wednesday, July 22, 2020 | History

2 edition of Two-phase flow through rock fractures. found in the catalog.

Two-phase flow through rock fractures.

William Frederick Bawden

Two-phase flow through rock fractures.

by William Frederick Bawden

  • 221 Want to read
  • 22 Currently reading

Published .
Written in English


The Physical Object
Pagination438 leaves
Number of Pages438
ID Numbers
Open LibraryOL14671966M

A reduced fracture model for two-phase flow with different rock types Elyes Ahmed, Jérôme Jaffré, Jean E. Roberts To cite this version: Elyes Ahmed, Jérôme Jaffré, Jean E. Roberts. A reduced fracture model for two-phase flow with different rock types. Mathematics and Computers in Simulation, Elsevier, ￿halv2￿.   The use of the subsurface and the exploitation of subsurface resources require prior knowledge of fluid flow through fracture networks. For nuclear waste disposal, for the enhancement of hydrocarbon recovery from a field, or the development of an enhanced geothermal system (EGS), it is fundamental to constrain the fractures and the fracture network. This study is part of the GEMex .

The Effect of the Critical Path on Fluid Flow through a Fracture Pyrak-Nolte, L. J. & C. D. Montemagno, Proceedings of the 1st North American Rock Mechanics Symposium, The University of Texas at Austin editors: P. P. Nelson and S. E. Laubach, A. . Macroscopically, fluid flowing through single fractures is approximately estimated using the cubic law, which is achieved from the analogy of laminar flow through two perfectly smooth parallel plates separated from each other with a fixed gap [9,10,11].However, fluid flow experimental findings on real rock factures indicated that the cubic law generally overestimates the transmissivity of.

Fluid Flow in Fractured Porous Media Authors: Liu, Richeng Jiang, Yujing ISBN: Year: Volume: 1 Pages: DOI: /books Language: .   Scientific understanding of fluid flow in rock fractures--a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storage--has grown significantly in the past 20 s: 1.


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Two-phase flow through rock fractures by William Frederick Bawden Download PDF EPUB FB2

(After Noren, ) Two-Phase Flow through Rock Fractures Lindblom (), in discussing gas tightness of fractured rock, states that the common assumption that a gas cavern can be pressurized to the groundwater pressure at the cavern level is unsafe since gas bubbles from a straw in a glass of water actually rise to the surface although the gas pressure in the bubbles originally was Cited by: 4.

Many problems in the mining industry relate directly to the flow of fluids through fractures in rock. A lack of understanding of fracture flow and the changes in flow conditions induced by mining (and, conversely, changes in mining conditions caused by altered fracture flow).

A laboratory flow apparatus was used to visualize and measure two‐phase gas‐liquid flows in natural rough‐walled rock fractures. Experiments at carefully controlled flow rate and pressure conditions have been performed using a natural fracture and three transparent fracture by: 1.

Introduction [2] Two‐phase flows through rough‐walled rock fractures occur in several industrial processes, including the underground storage of nuclear wastes, oil and gas recovery, and the production of geothermal energy. In many cases, the fluids flow in a very few open fractures or porous layers with high permeabilities, leading to flow rates that are high enough to generate Cited by: Numerical study on two-phase flow through fractured porous media The results show that the impact of fluid exchanging between rock matrix and fractures could be ignored completely when the.

The knowledge of fluid flow through rock fractures is directly related to hydrocarbon migration, waste disposal, and carbon dioxide sequestration. The hydraulic nature and response of the fractures are directly controlled by the roughness of the fracture surfaces. The mathematical analysis of the flow of a single-phase Newtonian Two-phase flow through rock fractures.

book through a rough-walled rock fracture is reviewed, starting with the Navier-Stokes equations. A one-dimensional steady-state pseudo-two-phase flow model is proposed for fractured rock.

The model considers free flow of a compressible mixture of air and water in an inclined planar fracture and is based upon the conservation of momentum and the “cubic” law.

An economical apparatus is designed to conduct the water flow through rough fractures under a variety of pressure gradients.

As indicated in Fig. 3, the pressure gradient is provided through the water tank, which has a total height of m, the drainage holes are set 15 cm apart at one side of the water tank so as to provide given pressure (h) by blocking the holes under that point.

Two-phase flow through fractured rock is encountered in many industrial activities such as oil and gas recovery, carbon dioxide storage, and underground oil storage. It is also an important phenomenon related to non-aqueous-phase-liquid (NAPL) contamination of groundwater.

Rock fracture roughness and tortuosity caused by contact asperities produce extra resistance for fluid flow in comparison with the channel consisting of two smooth parallel plates. To characterise the role of roughness and tortuosity in water flow through rock fractures, the existing studies of the effect of fracture roughness and contact area (tortuosity) on fluid flow through rock fractures.

Two-phase flow in fractured rocks occurs in recovery of petroleum or natural gas, recovery of coalbed methane, exploitation of geothermal energy, and isolation of radioactive waste.

Models to predict two-phase flow in fractures are therefore of practical interest, but little is known of the laws governing such flow. This characteristic can potentially lead to greater infilling and reduced fracture aperture, thereby reducing the volume of fluid flow through fractures by further reducing fracture aperture.

Fluid Dynamics. Fluid dynamics is the study of fluids in motion. This section introduces fluid dynamics effects on fractured rock flow. Books. A-Z of books and conference proceedings; About our eBooks; ICE bookshop; Book series; Subjects.

All Subjects; Buildings and structures; Coastal and offshore engineering; Development, planning and urban engineering; Transport Of Gas Bubbles Through Water-Filled Rock Fractures. In 2D, flow is analyzed in single fractures, series and parallel combination of fractures, inclined fractures, intersecting fractures, mixed networks, and in real (rough-surface).

fractures are conduits for fluid flow and are connected to other hydraulically conductive fractures to form systems or networks. Conductive fracture networks may include a large number of interconnected hydraulically active features or may be limited to a very small proportion of the total fractures in the rock.

The effect of model size on fluid flow through fractal rough fractures under shearing is investigated using a numerical simulation method. The shear behavior of rough fractures with self-affine properties was described using the analytical model, and the aperture fields with sizes varying from 25 to mm were extracted under shear displacements up to 20 mm.

Fluid flow through fractures in. @article{osti_, title = {On Two-Phase Relative Permeability and Capillary Pressure ofRough-Walled Rock Fractures}, author = {Pruess, K and Tsang, Y W}, abstractNote = {This paper presents a conceptual and numerical model of multiphase flow in fractures.

The void space of real rough-walled rock fractures is conceptualized as a two-dimensional heterogeneous porous medium, characterized. from the blocks, the oil flows to the production wells through the fractures of large permeability.

The process of oil production from fractured formations of double porosity is a two-phase flow process, and it is beyond the purpose of the hydrological aspects treated here.

Abstract We consider two-phase flow in a heterogeneous porous medium with highly permeable fractures and low permeable periodic blocks. The flow in the blocks is assumed to be in local capillary disequilibrium and described by Barenblatt’s relaxation relationships for the relative permeability and capillary pressure.

Multiphase Fluid Flow in Porous and Fractured Reservoirs discusses the process of modeling fluid flow in petroleum and natural gas reservoirs, a practice that has become increasingly complex thanks to multiple fractures in horizontal drilling and the discovery of more unconventional reservoirs and resources.

The book updates the reservoir engineer of today with the latest developments [email protected]{osti_, title = {Surface Roughness Effects on Fluid Transport Through a Natural Rock Fracture}, author = {Crandall, D M and Ahmadi, Goodarz and Smith, D H}, abstractNote = {Fluid flow through rock fractures can be orders of magnitude faster than through the adjacent low-permeability rock.

Understanding how fluid moves through these pathways is important for the prediction of.This article is concerned with the numerical discretization of a model for incompressible two-phase flow in a porous medium with fractures.

The model is a discrete fracture model in which the fractures are treated as interfaces of dimension 2 in a 3-dimensional simulation, with fluid exchange between the 2-dimensional fracture flow and the 3-dimensional flow in the surrounding rock matrix.