Hydraulic Fracturing and Rock Mechanics.

• Author: Zhao, Yu.
• TeilnehmendeR: Zhang, Yongfa.; He, Pengfei.
• Place / Publishing House: Singapore : : Springer Singapore Pte. Limited,, 2023.; ©2023.
• Year of Publication: 2023
• Edition: 1st ed.
• Language: English
• Physical Description: 1 online resource (269 pages)

Table of Contents

• Intro
• Preface
• Acknowledgements
• Contents
• 1 Introduction
• 1.1 Background
• 1.2 Research Progress
• 1.2.1 Initiation and Propagation of Hydraulic Fracture in Shale Reservoirs
• 1.2.2 Model of the Intersection of Hydraulic and Natural Fracture
• 1.2.3 Formation Mechanism of the Complicated Crack Network of Shale
• 1.2.4 Existing Problems
• References
• Part I Theoretical Background
• 2 Rock Mechanics in Hydraulic Fracturing Operations
• 2.1 Stress
• 2.2 Stain
• 2.3 Linear Elastic Material and Its Failure
• 2.4 Pressurized Crack
• References
• Part II Laboratory Observation
• 3 Reservoir Characteristics
• 3.1 Introduction
• 3.2 Sample Preparation
• 3.2.1 Sampling Location
• 3.2.2 Mineral Composition Characteristics
• 3.2.3 Microstructural Characteristics
• 3.3 Determination of the Physical and Mechanical Parameters of Shale
• 3.3.1 Porosity
• 3.3.2 Permeability
• 3.3.3 Basic Mechanical Properties of Longmaxi Shale
• 3.4 Uniaxial Hydraulic Fracturing Characteristics
• 3.4.1 Experimental Set-Up
• 3.4.2 Experimental Procedures
• 3.4.3 Experiment Results and Analysis
• 3.5 Characteristics of True Triaxial Hydraulic Fracture
• 3.5.1 Sample Preparation and Test Equipment
• 3.5.2 Fracturing Scheme
• 3.5.3 Analysis of Fracturing Results
• References
• 4 Constant Flow Injection
• 4.1 Introduction
• 4.2 Instantaneous Fracturing Mechanism of Constant Flow Pressurization
• 4.2.1 Impact of Axial Load
• 4.2.2 Effect of Injection Rate
• References
• 5 Constant Pressure Injection
• 5.1 Introduction
• 5.2 Results and Analysis
• 5.2.1 Typical Curves of Pump Pressure and Injection Rate Versus Time
• 5.2.2 New Insights from Observing Hydraulic Fracture Morphology
• 5.3 Correlation Between Fracture Behavior and Pumping Parameters Based on Engineering Parameters.
• 5.4 Characterization of the Relationship Between Fracture Propagation and Pumping Parameters
• References
• Part III Theoretical Modelling Considering Non-uniform Fluid Pressure
• 6 Fracture Initiation
• 6.1 Breakdown Process Under Constant Injection Flow
• 6.2 Breakdown Process Under Constant Injection Pressure
• References
• 7 Fracture Propagation
• 7.1 Introduction
• 7.2 Mathematical Formulation
• 7.2.1 Nonuniform Fluid Pressure Consideration
• 7.2.2 Semianalytical Solution
• 7.2.3 Propagation Conditions Under Nonuniform Fluid Pressure
• 7.3 Validation of the Semianalytical Solution
• 7.3.1 Degradation from Nonuniform Pressure to Constant Pressure
• 7.3.2 Stress Distribution
• 7.3.3 Critical Propagation Condition
• 7.4 Parametric Sensitivity Analysis
• 7.4.1 Reliability Analysis of the Numerical Solution (Perturbation of the Number of Subintervals m)
• 7.4.2 Sensitivity Analysis of the Initial Fluid Pressure P0 and Crack Length a
• 7.4.3 Perturbation Analysis of the Number of Terms n
• Appendix 1. ξ-Integrals Function
• Appendix 2. Closed-Form of F(ξ)
• References
• 8 Fracture Interaction Behaviors
• 8.1 Introduction
• 8.2 Intersection Model Between Hydraulic Fracture and Natural Fracture
• 8.2.1 Solution of Net Pressure Inside the Toughness-Dominated HF
• 8.2.2 Slippage Condition for the NF
• 8.3 Validation of Composite Criterion
• 8.3.1 Comparison with Previous Intersection Criteria
• 8.3.2 Comparison with Laboratory Experiments
• 8.4 Composite Criterion Considering Nonuniform Fluid Pressure
• 8.4.1 Nonuniform Form of Fluid Pressure
• 8.4.2 Comparison with Laboratory Experiments
• 8.5 Perturbation Analysis of Key Parameters
• 8.5.1 Impact of Initial Horizontal In-Situ Stress
• 8.5.2 Impact of Fracture Toughness
• 8.5.3 Impact of Approaching Distance
• References
• Part IV Field Implication.
• 9 Formation of Complex Networks
• 9.1 Introduction
• 9.2 Effect of Bedding Anisotropy on Hydraulic Fracturing
• 9.2.1 Pump Pressure and Deformation
• 9.2.2 Acoustic Emission Response of Microfracture
• 9.2.3 Hydraulic Fracture Morphology
• 9.3 Effect of Different In-Situ Stress States and Wellbore Orientations on the Formation Mechanism of Complex Fracture Networks
• 9.3.1 Characteristics of Fluid Pressure and Deformation
• 9.3.2 Hydraulic Fracture Propagation Modes
• 9.3.3 Quantitative Evaluation of Fracture Morphology
• 9.3.4 Effects of Bedding Planes
• 9.3.5 Effects of In-Situ Stress
• 9.3.6 Effects of Wellbore Orientations
• References
• Epilogue
• Main Insights
• Implications for Future Study.