1: Introduction
1.1 Introduction of the Book
1.2 Introduction to Drilling Engineering
1.3 Emerging technologies in Drilling Engineering
1.4 Sustainability Analysis of Current Drilling Practices
1.5 Towards Achieving Sustainability in Drilling
1.6 Introduction to Various Chapters
1.7 Summary

2: Environmental Sustainability
2.1 Introduction
2.2 Sour Gas
2.3 Oil Industry Flares
2.4 Advances in Real-time Waste Management
2.5 Zero-Waste Engineering
2.6 Unusual Terrain
2.7 Future Trends
2.8 Summary
2.9 Nomenclature
2.10 Exercises
2.11 Problems

3: State of the Art of Drilling Engineering
3.1 Introduction
3.2 Drilling Methods
3.3 Drilling Fluids
3.4 Drilling Hydraulics
3.5 Monitoring and Control
3.6 Formation Pressure Estimation and Dynamic Design
3.7 Drilling Optimization
3.8 Casing Design
3.9 Cementing Technology
3.10 Horizontal and Directional Drilling
3.11 Well Completion
3.12 Fundamental Concepts of Sustainable Drilling Operations
3.13 Environmental Issues
3.14 Summary
3.14 Nomenclature
3.15 Exercises
3.16 Problems

4: Advances in Directional Drilling
4.1 Introduction
4.2 Theories and Future Expectations
4.3 Technology and Limitations
4.4 Novel Tools for Directional Drilling Accuracy
4.5 Future Trends based on Current Practices
4.6 Future Trends with a Paradigm Shift Toward Sustainability
4.7 Summary
4.8 Nomenclature
4.9 Exercises
4.10 Problems

5: Advances in Horizontal Well Drilling
5.1 Introduction
5.2 Theories and Future Expectations
5.3 Technology and Limitations
5.4 Novel Tools for Horizontal Drilling Accuracy
5.5 Future Trends based on Current Practices
5.6 Future Trends with a Paradigm Shift Toward Sustainability
5.7 Summary
5.8 Nomenclature
5.9 Exercises
5.10 Problems

6: Advances in Drilling Technologies
6.1 Introduction
6.2 Managed Pressure Drilling
6.3 Underbalanced Drilling
6.4 Mudcap Drilling
6.5 Coiled Tubing
6.6 Multilateral Drilling
6.7 Extended Reach Drilling
6.8 Complex Path Drilling
6.9 Casing Drilling
6.10 High Pressure High Temperature (HPHT) Drilling
6.11 Advances in Sustainability
6.12 Future Trends based on Status quo
6.13 Future Trends based on Paradigm Shift
6.14 Summary
6.15 Nomenclature
6.16 Exercises
6.17 Problems

7: Drilling in Unconventional Terrains
7.1 Introduction
7.2 Rock Mechanics of Difficult Terrains
7.3 Abnormal Pressure Formations
7.4 Mud Loss Susceptibility
7.5 Cavernous Formations
7.6 Well Control
7.7 Dynamic Optimization
7.8 Harsh Environment Drilling
7.9 Shale Well Drilling
7.10 Artic Region Drilling
7.11 Summary
7.12 Nomenclature
7.13 Exercises
7.14 Problems

8: Offshore Drilling
8.1 Introduction
8.2 Fundamental Considerations
8.3 Environmental Considerations
8.4 Deep Water Drilling
8.5 Advances in Monitoring and Dynamic Optimization
8.6 Sonic While Drilling
8.7 Summary
8.8 Nomenclature
8.8 Exercises
8.9 Problems

9: Global Optimization
9.1 Introduction
9.2 Criterion for Global Optimization
9.3 Realtime Data Acquisition
9.4 Adaptive Control
9.5 Sonic While Drilling and Realtime Formation Characterization
9.6 Dynamic Optimization
9.7 Drilling Operations Optimization
9.8 Optimization of the Fluid System
9.7 Rate of Penetration (ROP) Optimization
9.8 Summary
9.9 Nomenclature
9.10 Exercises
9.11 Problems

10: Conclusions