By Norton J. Lapeyrouse
ISBN-10: 0750674520
ISBN-13: 9780750674522
The main whole guide of its type, this useful publication can provide all of the formulation and calculations you will definitely desire in drilling operations. New up-to-date fabric comprises conversion tables into metric. Separate chapters take care of calculations for drilling fluids, strain keep an eye on, and engineering. instance calculations are supplied all through. awarded in easy-to-use, step by step order, formulation and Calculations is a short reference for daily figure out at the rig. It additionally serves as a convenient research consultant for drilling and good keep an eye on certification classes. almost the entire arithmetic required out at the drilling rig is right here in a single handy resource, together with formulation for strain gradient, particular gravity, pump output, annular speed, buoyancy issue, quantity and stroke, slug weight, drill string layout, cementing, intensity of washout, bulk density of cuttings, and fixed pipe. the main whole guide of its variety New up to date fabric comprises conversion tables into metric instance calculations are supplied all through
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Extra resources for Formulas and Calculations for Drilling, Production and Workover, Second Edition
Sample text
Cuttings must be washed free of mud. In an oil mud, diesel oil can be used instead of water. 2. 33ppg. 3. Fill the mud balance with cuttings until a balance is obtained with the lid in place. 4. Remove lid, fill cup with water (cuttings included), replace lid, and dry outside of mud balance. 5. Move counterweight to obtain new balance. 8ppg. 91 Drill String Design (Limitations) The following will be determined: Length of bottomhole assembly (BHA) necessary for a desired weight on bit (WOB). Feet of drill pipe that can be used with a specific bottomhole assembly (BHA).
0696 = 479ft Length, ft = Length 2. Feet of drill pipe that can be used with a specific bottomhole assembly (BHA) NOTE: Obtain tensile strength for new pipe from cementing handbook or other source. 5 b) Determine maximum length of drill pipe that can be run into the hole with a specific bottomhole assembly: Length,,, = [(T x f ) - MOP - Wbha] x BF WdP where T = tensile strength, lb for new pipe f = safety factor to correct new pipe to no. 87 c) Total depth that can be reached with this BHA and this drill pipe: Total depth, ft = 12,655ft + 500ft Total depth = 13,155ft Ton-Mile (TM) Calculations All types of ton-mile service should be calculated and recorded in order to obtain a true picture of the total service received from the rotary drilling line.
To determine the exact factor, obtain two pressure readings at different pump rates and use the following formula: Factor = log (pressure 1 + pressure 2) log (pump rate 1 + pump rate 2) 28 Formulas and Calculatic. I. 5 b) Convert "C to O F = "c 2 i O F + "C + 30 Example: Convert 24°C to O F : O F = 24 O F = 78 + 24 + 30 CHAPTER TWO BASICCALCULATIONS Volumes and Strokes _ _ ~ ~ ~ _ _ _ _ _ . _ . 276in. = 9400ft Drill collars--8,Oin. 0in. 615in. 4500ft = Pump data-7 in. by 12in. 136 @ 95% Hole size = 12-1/4in.
Formulas and Calculations for Drilling, Production and Workover, Second Edition by Norton J. Lapeyrouse
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