Drilling Conversions

Example Code

# Example Code
from ogPypeline import drilling as dri

converted_dogleg  = dri.dogleg(2.1, 'deg/100ft')
print(converted_dogleg)
# outputs the following dictionary:
{
       'deg/100ft' : 2.1,
       'deg/30m' : 2.06703084
}
# Each key representing a different dogleg severity unit
print(converted_dogleg['deg/30m'])
# outputs the following float:
2.06703084

Dogleg units

The dogleg(value, units) function converts degrees per 100ft into degrees per 30m and vice versa. The input units are as per the table below:

Dogleg units
Unit Description	Function Input String
degrees per 100ft	‘deg/100ft’
degrees per 30m	‘deg/30m’

Axial Spring Constant units

The axial_spring_con(value, units) function converts Newtons per Meter into Pounds per Inch and vice versa. The input units are as per the table below:

Axial Spring Constant units
Unit Description	Function Input String
Newtons per Meter	‘N/m’
Pounds per Inch	‘lb/in’

Axial Dampening Coefficient units

The axial_dampening_coef(value, units) function converts Newton Seconds per Meter into Pound Seconds per Inch and vice versa. The input units are as per the table below:

Axial Dampening Coefficient units
Unit Description	Function Input String
Newton Seconds per Meter	‘N-s/m’
Pound Seconds per Inch	‘lb-s/in’

Torsional Spring Constant units

The torsional_spring_con(value, units) function converts Newton Meter per Radian into Pound Inch per Radian and vice versa. The input units are as per the table below:

Torsional Spring Constant units
Unit Description	Function Input String
Newton Meter per Radian	‘N-m/rad’
Pound Inch per Radian	‘lb-in/rad’

Torsional Dampening Coefficient units

The torsional_dampening_coef(value, units) function converts Newton Meter Second per Radian into Pound Inch Second per Radian and vice versa. The input units are as per the table below:

Torsional Dampening Coefficient units
Unit Description	Function Input String
Newton Meter Second per Radian	‘N-m-s/rad’
Pound Inch Second per Radian	‘lb-in-s/rad’

Pressure Gradient units

The pressure_grad(value, units) function converts between different pressure gradient units. The input units are as per the table below:

Pressure Gradient units
Unit Description	Function Input String
pound per square inch per foot	‘psi/ft’
KiloPascal per Meter	‘kPa/m’
MegaPascal per Meter	‘MPa/m’
Pascal per Meter	‘Pa/m’

Yield Slurry units

The yield_slurry(value, units) function converts between different Yield Slurry units for cementing. The input units are as per the table below:

Yield Slurry units
Unit Description	Function Input String
Cubic Feet per Sack	‘ft3/sk’
Cubic Meter per Sack	‘m3/sk’
Gallons per Sack	‘gal/sk’
Cubic Meter per Kilogram	‘m3/kg’

Footage Cost units

The footage_cost(value, units) function converts between different Footage Cost units for drilling, the currency is declared as a universal place holder using “cur”. The input units are as per the table below:

Footage Cost units
Unit Description	Function Input String
Currency per Foot	‘cur/ft’
Currency per Meter	‘cur/m’
Currency per thousand Feet	‘cur/1000ft’
Currency per thousand Meters	‘cur/1000m’

Mud Weight units

The mud_weight(value, units) function converts between different Mud Weight units for drilling fluid. The input units are as per the table below:

Mud Weight units
Unit Description	Function Input String
Grams per Cubic Centimeter	‘g/cm3’
Grams per Litre	‘g/L’
Kilograms per Cubic Meter	‘kg/m3’
Kilograms per Litre	‘kg/L’
KiloPascals Per Meter	‘kPa/m’
Pounds Per Cubic Feet	‘lb/ft3’
Pounds Per Barrel	‘lb/bbl’
Pounds Per Gallon	‘ppg’
Pounds Per Square Inch Per Foot	‘psi/ft’
Pounds Per Square Inch Per Hundred Feet	‘psi/100ft’
Specific Gravity	‘SG’

Flow Rate units

The flow_rate(value, units) function converts between different Flow Rate units for the circulation of drilling fluid. The input units are as per the table below:

Flow Rate units
Unit Description	Function Input String
Barrels per Hour	‘bbl/hr’
Barrels per Minute	‘bbl/min’
Cubic Feet per Minute	‘ft3/min’
Cubic Meters per Hour	‘m3/hr’
Cubic Meters per Minute	‘m3/min’
Gallons per Hour	‘gal/hr’
Gallons per Minute	‘gpm’
Litres per Hour	‘L/hr’
Litres per Minute	‘L/min’

Drilling Rate units

The drilling_rate(value, units) function converts between different Drilling Rate units for the Rate of Penetration(ROP). The input units are as per the table below:

Drilling Rate units
Unit Description	Function Input String
Feet Per Day	‘ft/d’
Feet Per Hour	‘ft/hr’
Feet Per Minute	‘ft/min’
Feet Per Second	‘ft/s’
Meters Per Day	‘m/d’
Meters Per Hour	‘m/hr’
Meters Per Minute	‘m/min’
Meters Per Second	‘m/s’

Weight Length units

The weight_length(value, units) function converts between different Weight by Length units. The input units are as per the table below:

Weight Length units
Unit Description	Function Input String
Pounds per Foot	‘lb/ft’
Kilograms per Meter	‘kg/m’

Geothermal Gradient units

The geothermal_gradient(value, units) function converts between different Geothermal Gradient units. The input units are as per the table below:

Geothermal Gradient units
Unit Description	Function Input String
Degrees Centigrade per 100 Meters	‘c/100m’
Degrees Fahrenheit per 100 Feet	‘f/100ft’