DEM simulation of confining pressure effects on crack opening displacement in hydraulic fracturing

被引：44

作者：

Abolfazl, Abdollahipour ^{[1
]}

Mohammad, Fatehi Marji ^{[1
]}

Alireza, Yarahmadi Bafghi ^{[1
]}

Javad, Gholamnejad ^{[1
]}

机构：

[1] Yazd Univ, Fac Min & Met Engn, Yazd 89195741, Iran

来源：

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY | 2016年 / 26卷 / 04期

关键词：

Hydraulic fracture; COD; Numerical analysis; Confining pressure; Regression;

D O I：

10.1016/j.ijmst.2016.05.004

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

Hydraulic fracture is one of the key methods in well stimulation to increase production of oil and gas. Crack Opening Displacement (COD) is of great importance in this method since it is in direct relation with permeability and production rate. In this paper COD is measured by a distinct element model which has been validated by an exact solution. A comprehensive study has been performed on confining pressure effect on COD which is neglected in the analytical solution. Numerical results showed that confining pressure considerably affects COD. A multi-parameter regression (considering effect of confining pressure, rock mass properties and fluid pressure) was performed on numerical results which resulted in an equation. The proposed equation considers the effect of confining pressure and its results are in good agreement with numerical results. (C) 2016 Published by Elsevier B.V. on behalf of China University of Mining & Technology.

引用

页码：557 / 561

页数：5

共 47 条

[41] Experimental and numerical investigation of fracture mechanics of bitumen beams [J].

Portillo, O. ;

Cebon, D. .

ENGINEERING FRACTURE MECHANICS, 2013, 97 :281-296

[42] POROELASTIC EFFECTS IN THE DETERMINATION OF THE MAXIMUM HORIZONTAL PRINCIPAL STRESS IN HYDRAULIC FRACTURING TESTS - A PROPOSED BREAKDOWN EQUATION EMPLOYING A MODIFIED EFFECTIVE STRESS RELATION FOR TENSILE FAILURE [J].

SCHMITT, DR ;

ZOBACK, MD .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS, 1989, 26 (06) :499-506

[43] Numerical modelling of pressurized fracture evolution in concrete using zero-thickness interface elements [J].

Segura, J. M. ;

Carol, I. .

ENGINEERING FRACTURE MECHANICS, 2010, 77 (09) :1386-1399

[44]

Sneddon I. N., 1969, CRACK PROBLEMS CLASS

[45] The Research on Dynamic Rules of Crack Extension during Hydraulic Fracturing for Oil Shale In-Situ Exploitation [J].

Sun, Keming ;

Tan, Jian ;

Wu, Di .

2011 INTERNATIONAL CONFERENCE OF ENVIRONMENTAL SCIENCE AND ENGINEERING, VOL 12, PT B, 2012, 12 :736-743

[46] Simulating fracture and friction of Aue granite under confined asymmetric compressive test using clumped particle model [J].

Yoon, Jeoung Seok ;

Zang, Arno ;

Stephansson, Ove .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2012, 49 :68-83

[47] Rock specific hydraulic fracturing and matrix acidizing to enhance a geothermal system - Concepts and field results [J].

Zimmermann, Guenter ;

Bloecher, Guido ;

Reinicke, Andreas ;

Brandt, Wulf .

TECTONOPHYSICS, 2011, 503 (1-2) :146-154

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