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Monday, August 3, 2020 | History

2 edition of influence of inelastic rock behaviour on hydraulic fracture geometry found in the catalog.

influence of inelastic rock behaviour on hydraulic fracture geometry

Dirkjan Bernhard . Van Dam

influence of inelastic rock behaviour on hydraulic fracture geometry

by Dirkjan Bernhard . Van Dam

  • 12 Want to read
  • 20 Currently reading

Published by Delft University Press in Delft .
Written in English

    Subjects:
  • Hydraulic fracturing.,
  • Rock mechanics.,
  • Rocks -- Fracture.

  • Edition Notes

    Statementdoor Dirkjan Bernhard Van Dam.
    Classifications
    LC ClassificationsTA706 .V36 1999
    The Physical Object
    Paginationxii, 283 p. :
    Number of Pages283
    ID Numbers
    Open LibraryOL18762534M
    ISBN 109040719586

    With regard to crystalline rock that constitutes deep geology, attempts have been made to explore its hydraulic characteristics by focusing on the network of numerous fractures within. As the hydraulic characteristics of a rock are the accumulation of hydraulic characteristics of each fracture, it is necessary to develop the hydraulic model of a single fracture to predict the large-scale. Description and quantification of rock fabric attributes – cores; Mechanical behavior, hydraulic behavior, testing in unconventionals; Stresses - critically stress fractures and hydraulic conductivity; Geometry and spatial occurrence, DFN models. Examples of evaluation in unconventional plays. Module Shale Geomechanics.

      A recently developed unconventional fracture model (UFM*) is able to simulate complex fracture networks propagation in a formation with pre-existing natural fractures. Multiple fracture branches can propagate at the same time and crisscross each other. The behaviour of a hydraulic fracture when it intersects a natural fracture, whether being arrested, crossing, creating an offset, or .   The equivalent continuum behavior of a joint system can be expressed with respect to a cut-off value for the first invariant of fracture tensor (F 0). The block size corresponding to the aforementioned cut-off F 0 (between 10 and 30 for the joint systems investigated in this study) can be considered to provide the REV size for a given joint.

    Hydraulic fracturing is a process characterized by the nucleation and propagation of multiple diffused fractures in soil or rock masses as a consequence of a localized solicitation driven by hydraulic pressure. Hydraulic fractures are found frequently in normal geophysics and geology situations, e. g., magma-driven propagation cracks [42, 48]. (4). The next three papers extend these views by taking a closer look on parameters that govern hydraulic diffusivity in sandstones and other types of rocks. Specific targets addressed are the influence of differential stress on permeability (5), imaging of the fracture geometry (6), and pressure induced variations in the pore geometry (7).


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Influence of inelastic rock behaviour on hydraulic fracture geometry by Dirkjan Bernhard . Van Dam Download PDF EPUB FB2

Int. Rock Mech. Min. Sci. & Geomech. Abstr. Vol, No.7, pp.Printed in Great Britain Influence of Inelastic Rock Behaviour in Hydraulic Fracturing /93 $ + Pergamon Press Ltd P. PAPANASTASIOU t M. THIERCELIN This paper examines the importance of different non-linear mechanisms, such as plastic yielding, rock dilation, cohesive zone Cited by: 1.

Introduction. Rock mass in natural geological setting is composed of rock matrix and fractures. The presence of fractures can drastically affect the hydraulic properties of rock mass due to their typically much greater permeability comparing with rock matrix (Chen et al.,Liu et al., ).Understanding fluid flow in rock fractures is of great concern in numerous geophysical Author: Guan Rong, Jie Tan, Jie Tan, Hongbin Zhan, Renhui He, Ziyang Zhang.

The influence of inelastic rock behaviour on hydraulic fracture geometry (). Pagina-navigatie: Main; Save publication. Save as MODS; Export to Mendeley; Save as EndNote; Export to RefWorks; Title: The influence of inelastic rock behaviour on hydraulic fracture geometry: Author: van Dam, D.B.

Thesis advisor: Currie, P.K. Date issued: Cited by: The influence of inelastic rock behaviour on hydraulic fracture geometry. By D.B. (author) van Dam. Abstract. Civil Engineering and Geoscience Publisher: Delft University Press.

Year: OAI identifier: oai::uuidbd4-eeaac05de1b64e8 Author: D.B. (author) van Dam. Regarding far-field hydraulic fracture geometry, the possibility of arrested behavior also increased.

Influence of in-situ stress and pre-fracture on hydraulic fractures geometry in a tectonic stress regime C.M. StoneA characterization of pressure records in inelastic rock demonstrated by hydraulic fracturing measurements in salt Cited by: Influence of inelastic rock behaviour in hydraulic fracturing.

International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts 30(7), – Experimental study of the impact of plastic rock deformation on hydraulic fracture geometry. International Journal of Rock Mechanics and Mining Sciences 34(3–4), paper.

Typically, hydraulic fracturing contains four coupling processes. The rock deformation induced by the fluid pressure within the fracture, the fluid flow in the fracture which contains tangential flow and normal flow, tangential flow is the fluid flow in the length direction; normal flow refers to the fluid leak-off into the surrounding medium and fracture propagation in the rock.

The first results on the influence of inelastic rock behaviour in hydraulic fracturing were presented in references by Papanastasiou, Thiercelinvan den Hock et al. Papanastasiou, Thiercelin and Papanastasiou a carried out an elastoplastic analysis fully coupled with fluid flow and a robust fracture propagation criterion.

Hydraulic fracturing has been and continues to be a major techno logical tool in oil and gas recovery, nuclear and other waste disposal, mining and particularly in-situ coal gasification, and, more recently, in geothermal heat recovery, particularly extracting heat from hot dry rock masses.

The understanding of the fracture process under the ac tion of pressurized fluid at various temperatures. It is shown that the solution is not only consistent with the square root singularity of linear elastic fracture mechanics, but that its asymptotic behavior at infinity is actually given by the singular solution of a semi-infinite hydraulic fracture constructed on the assumption that the fluid flows to the tip of the fracture.

Part of the Mechanics of elastic and inelastic solids book series (MEIS, volume 5) Abstract “Effect of Vertical Fractures on Reservoir Behavior — Compressible Fluid Case,” Soc.

of Pet. Eng. J., Vol. 2, pp. 87–94, June “Hydraulic Fracture Geometry: Fracture Containment in Layered Formations,” SPEPresented at the. This paper studies the importance of the cohesive zone in the modelling of a fluid driven fracture under plain strain conditions.

The fracture is driven by pumping of an incompressible viscous fluid at the fracture inlet. Rock deformation is modeled for linear elastic and poroelastic solids.

Fluid flow in the fracture is modeled by lubrication theory. In the paper, a model of a hydraulic fracture with a tip cohesive zone according to the Barenblatt’s approach is considered.

The particular case of inviscid fracturing fluid and impermeable rock is studied analytically. Dependencies on time of the fracture length, injection pressure, and fracture opening at the wellbore are obtained, and compared with the corresponding dependencies for a.

Figure 14 shows the various types of rock mass behavior and mechanical properties with different block sizes. Based on the above analyses, the volume of the blocks mainly depends on fracture spacing. As a consequence, the fractured rock mass with different fracture densities is rebuilt, and the various types of rock mass deformations are assessed.

25 Chamekh Khemissi et al.: Influence of Geomechanical and Hydraulic Parameters of the Fractured Rock on the Evolution of Underground Karst Cavities in Cheria Area, NE Algerea per foot or fractures the average frequency over a section perpendicular to one the fracture, for three groups, is f1 = f/m, f2 = f/m, f3 = f/m.

The. Hydraulic fracturing (HF) is a technique for enhancing the permeability of a rock mass by injecting highpressure fluids in order to initiate/open fractures in a rock formation (Yew and Weng ).

Abstract. In situ experiments, which were accessible for direct observation by mine-back, have been conducted to determine the effect that geologic discontinuities, elastic properties, and in situ stress differences have on hydraulic fracture propagation and the resultant overall fracture geometry.

Vertical fractures were observed to terminate only in regions of high minimum horizontal in situ. Rock deformation models and fluid leak-off in hydraulic fracturing Article (PDF Available) in Geophysical Journal International (3) September with 1, Reads.

Nonetheless, the problem of hydraulic fracture geometry has been widely investigated numerically and many authors have worked on various cases of hydraulic fracturing; Sarris and Papanastasiou. Inelastic Behavior. Geometry of rock fractures.

suggesting that the role of local structures in earthquake-volcano interactions influence the behavior of triggered systems and.

The relevance of hydraulic fracturing experiments in the analysis of subsurface flow mechanisms and interactions during fracking operations underpins past and current efforts towards designing and implementing more representative physical models.

An overview has been presented that comprehensively discusses the key elements and design requirements for successful experimentations.The pore pressure cohesive zone model has been applied to investigate the hydraulic fracture with different rock properties.

The hydraulic fracture predictions of a three-layer water injection.How Natural Fractures Could Affect Hydraulic-Fracture Geometry Authors Arash Dahi Taleghani (Louisiana Predicting Fracture Swarms--the Influence of SubcriticalCrack Growth and the Crack-Tip Process Zone on Joint Spacing in Rocks.

Dual Leakoff Behavior in Hydraulic Fracturing ofTight, Lenticular Gas Sands. SPE Prod Eng 5 (3):