Formulas and Calculations for Drilling, Production and Workover

by Lapeyrouse

• ISBN13: 9780750674522
• ISBN10: 0750674520
• Edition: 2nd
• Format: Paperback
• Copyright: 2002-11-27
• Publisher: Elsevier Science

Summary

The most complete manual of its kind, this handy book gives you all the formulas and calculations you are likely to need in drilling operations. New updated material includes conversion tables into metric. Separate chapters deal with calculations for drilling fluids, pressure control, and engineering. Example calculations are provided throughout. presented in easy-to-use, step-by-step order, Formulas and Calculations is a quick reference for day-to-day work out on the rig. It also serves as a handy study guide for drilling and well control certification courses. Virtually all the mathematics required out on the drilling rig is here in one convenient source, including formulas for pressure gradient, specific gravity, pump output, annular velocity, buoyancy factor, volume and stroke, slug weight, drill string design, cementing, depth of washout, bulk density of cuttings, and stuck pipe.

Author Biography

Norton J. Lapeyrouse is a technical training instructor in oilfield courses with international experience. He has developed numerous training programs, courses, and manuals for supervisory and field personnel. He is currently employed by Randy Smith Training Solutions

Table of Contents

Preface	vii
Basic Formulas	1	(30)
Pressure Gradient	1	(2)
Hydrostatic Pressure	3	(1)
Converting Pressure into Mud Weight	4	(1)
Specific Gravity	5	(1)
Equivalent Circulating Density	6	(1)
Maximum Allowable Mud Weight	7	(1)
Pump Output	7	(2)
Annular Velocity	9	(3)
Capacity Formulas	12	(7)
Control Drilling	19	(1)
Buoyancy Factor	20	(1)
Hydrostatic Pressure Decrease When Pulling Pipe out of the Hole	20	(2)
Loss of Overbalance Due to Falling Mud Level	22	(2)
Formation Temperature	24	(1)
Hydraulic Horsepower	25	(1)
Drill Pipe/Drill Collar Calculations	25	(2)
Pump Pressure/Pump Stroke Relationship	27	(1)
Cost per Foot	28	(1)
Temperature Conversion Formulas	29	(2)
Basic Calculations	31	(50)
Volumes and Strokes	31	(2)
Slug Calculations	33	(4)
Accumulator Capacity	37	(4)
Bulk Density of Cuttings	41	(1)
Drill String Design (Limitations)	42	(2)
Ton-Mile Calculations	44	(3)
Cementing Calculations	47	(6)
Weighted Cement Calculations	53	(1)
Calculations for the Number of Sacks of Cement Required	54	(3)
Calculations for the Number of Feet to Be Cemented	57	(4)
Setting a Balanced Cement Plug	61	(4)
Differential Hydrostatic Pressure Between Cement in the Annulus and Mud Inside the Casing	65	(1)
Hydraulicing Casing	66	(4)
Depth of a Washout	70	(1)
Lost Returns---Loss of Overbalance	71	(1)
Stuck Pipe Calculations	72	(3)
Calculations Required for Spotting Pills	75	(4)
Pressure Required to Break Circulation	79	(2)
Drilling Fluids	81	(22)
Increase Mud Density	81	(4)
Dilution	85	(1)
Mixing Fluids of Different Densities	86	(1)
Oil-Based Mud Calculations	87	(4)
Solids Analysis	91	(4)
Solids Fractions	95	(1)
Dilution of Mud System	96	(1)
Displacement---Barrels of Water/Slurry Required	97	(1)
Evaluation of Hydrocyclone	97	(2)
Evaluation of Centrifuge	99	(4)
Pressure Control	103	(62)
Kill Sheets and Related Calculations	103	(12)
Prerecorded Information	115	(9)
Kick Analysis	124	(13)
Pressure Analysis	137	(2)
Stripping/Snubbing Calculations	139	(5)
Subsea Considerations	144	(9)
Workover Operations	153	(4)
Controlling Gas Migration	157	(2)
Gas Lubrication	159	(2)
Annular Stripping Procedures	161	(4)
Engineering Calculations	165	(44)
Bit Nozzle Selection---Optimized Hydraulics	165	(4)
Hydraulics Analysis	169	(4)
Critical Annular Velocity and Critical Flow Rate	173	(1)
``d'' Exponent	174	(1)
Cuttings Slip Velocity	175	(4)
Surge and Swab Pressures	179	(8)
Equivalent Circulation Density	187	(3)
Fracture Gradient Determination---Surface Application	190	(4)
Fracture Gradient Determination---Subsea Application	194	(3)
Directional Drilling Calculations	197	(6)
Miscellaneous Equations and Calculations	203	(6)
Appendix A	209	(8)
Appendix B	217	(4)
Index	221