Drilling Engineering

Mudcake growth equation 2 – Formation invasion

2.152

Mudcake permeability – Formation invasion

2.153

New pump circulating pressure

2.154

Nozzle area calculation

2.155

Number of sacks of cement required

2.156

Number of sacks of cement required for a given length of plug

2.157

Number of sacks of lead cement required for annulus

2.158

Number of sacks of tail cement required for casing

2.159

Open-ended displacement volume of pipe

2.160

Overall efficiency – Diesel engines to mud pump

2.161

Overall power system efficiency

2.162

Penetration rate – Drill-rate model – Alternative equation

2.163

Penetration rate – Drill-rate model – Basic equation

2.164

Percentage of bit nozzle pressure loss

2.165

Plastic viscosity – Bingham plastic model

2.166

Plug length to set a balanced cement plug

2.167

Polar moment of inertia

2.168

Polished rod horsepower – Sucker-rod pump

2.169

Pore-pressure gradient – Rehm and McClendon

2.170

Pore-pressure gradient – Zamora

2.171

Pressure analysis – Pressure by each barrel of mud in casing

2.172

Pressure analysis – Surface pressure during drill stem test

2.173

Pressure gradient

2.174

Pressure required to break circulation – Annulus

2.175

Pressure required to break circulation – Drill string

2.176

Pressure required to overcome gel strength of mud inside the drill string

2.177

Pressure required to overcome mud’s gel strength in annulus

2.178

Pump calculation – Pump pressure

2.179

Pump calculations – Power required

2.180

Pump displacement

2.181

Pump flow rate

2.182

Pump head rating

2.183

Pump output – gpm

2.184

Pump output triplex pump

2.185

Pump pressure/pump stroke relationship

2.186

Radial force related to axial load – Cementing

2.187

Range of load – Sucker-Rod pump

2.188

Rate of fuel consumption by a pump

2.189

Rate of gas portion that enters the mud

2.190

Relationship between traveling block speed and fast line speed

2.191

Rock removal rate

2.192

Rotating horsepower

2.193

Side force at bit in anisotropic formation

2.194

Sinusoidal buckling

2.195

Slurry density for cementing calculations

2.196

Solids analysis-High-salt content muds

2.197

Solids analysis low-salt content muds

2.198

Spacer volume behind slurry required to balance the plug

2.199

Specific gravity of cuttings by using mud balance

2.200

Stripping/snubbing calculations – Breakover point between stripping and snubbing

2.201