Page 8 - Air and gas Drilling Field Guide 3rd Edition

Contents ix

10.4 Minimum Volumetric Flow Rates ...........................................252
10.5 Nonfriction and Friction Illustrative Examples ......................255
10.5.1 Nonfriction Approximation ........................................256
10.5.2 Major and Minor Friction Losses ................................258
10.6 Conclusions..............................................................................261
References .........................................................................................262

CHAPTER 11 Specialized Downhole Drilling Equipment .............265
11.1 DTH..........................................................................................265
11.2 PDM..........................................................................................272
11.3 Conclusions..............................................................................279
References .........................................................................................280

CHAPTER 12 Underbalanced Drilling ........................................283
12.1 Introduction.............................................................................283
12.2 Vertical Wells ...........................................................................286
12.2.1 Underbalanced Example .............................................286
12.2.2 Air, Gas, and Unstable Foam.......................................289
12.2.3 Aerated Fluid ...............................................................290
12.2.4 Stable Foam..................................................................291
12.2.5 Summary ......................................................................292
12.3 Directional Wells......................................................................292
12.3.1 Directional Control and Surveying.............................295
12.3.2 Horizontal Drilling with Membrane Nitrogen ...........299
12.3.3 Equations for Radius and Slant (or Horizontal)
Drilling.........................................................................305
12.4 Conclusions ..............................................................................308
References .........................................................................................308

Dimensions and Units, Conversion Factors ...............................A-1
Appendix A
Average Annual Atmospheric Conditions ..................................B-1
Appendix B
Chapter 8 Illustrative Example MathCad™ Solutions ...............C-1
Appendix C
Chapter 9 Illustrative Example MathCad™ Solutions .............. D-1
Appendix D
Chapter 10 Illustrative Example MathCad™ Solutions .............E-1
Appendix E
Chapter 11 Illustrative Example MathCad™ Solutions.............. F-1
Appendix F
Direct Circulation Minimum Volumetric Flow Rates ............... G-1
Appendix G
Index................................................................................. INDEX-1