Dogleg severity is a measure of the amount of change in the inclination, and/or azimuth of a borehole usually expressed in degrees per 100 feet

# Category: Drilling Calculations

Drilling Formulas Calculations are not difficult to perform and after downloading this free spreadsheet, you will find how easy they are. In this spreadsheet you

ECD / Equivalent Circulating Density is an important parameter to monitor in the drilling process of a well, especially in horizontal & HPHT wells. In

Mud Engineers & drilling engineers need to have quick drilling fluid calculations equations to help them while they are on the rig. In this article,

Learning Objectives Upon completion of oil well casing cementing & slurry calculations article, you should be familiar with: How to calculate the amount of cement

The addition of Cementing additives is one of the variables that influence the base fluid density. This density ought to be gathered for additive concentration

Annular capacity volume can be defined as the volume contained between the outside of the pipe and the open hole (Fig. 1) or between the

In this article, we shall discuss Drill Pipe Capacity Calculations (Fill-Up, Displacement Volumes in both open-end & bull plugged). At the end of the article,

Calculation of both hydraulic horsepower and impact force mainly depends on calculating pressure drop across the bit. A major percentage of normal circulating pressures is

Lag Time Calculations & Calculator For Drilling Oilfield What Is The Drilling Term “Lag Time”? A definite time interval is always required for pumping the