drilling operations 1 min read
Equivalent Circulating Density (ECD)
Equivalent Circulating Density (ECD) is the effective density that combines current mud density and annular pressure drop. ECD is vital for…
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Slow Circulation Rate (SCR)
Slow Circulation Rate is a circulation rate which will be used in well kill operation. Typically, slow circulation rate pressure (SCR)…
drilling operations 3 min read
Jet Optimization and Planning
For many years, engineers have known that hydraulics play an Important role in cleaning the face of the formation so…
drilling operations 2 min read
Hydraulic Rotary Drilling
Oil well drilling utilizes tri-cone roller, carbide embedded, fixed-cutter diamond, or diamond-impregnated drill bits to wear away at the cutting face.…
drilling operations 13 min read
Types of Fluids
In geotechnical engineering, drilling fluid is used to aid the drilling of boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling…
drilling operations 4 min read
Drilling hydraulics
The material in this section provides a straightforward explanation of what is covered by the broad term “hydraulics” along with…
drilling operations 13 min read
Drilling fluid types
There are several different types of drilling fluids, based on both their composition and use. The three key factors that…
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Air drilling
Air drilling—also known as pneumatic percussion drilling[1] —is an underbalanced drilling (UBD) technique in which gases, usually compressed air or nitrogen, are used…
drilling operations 2 min read
Drilling mud
Drilling mud, also called drilling fluid, in petroleum engineering, a heavy, viscous fluid mixture that is used in oil and gas drilling operations to…
drilling operations 2 min read
Radius of Curvature
The radius of curvature method is currently considered to be one of the most accurate methods available. The method assumes the wellbore course is…
drilling operations 7 min read
Well planning
Well planning is perhaps the most demanding aspect of drilling engineering. It requires the integration of engineering principles, corporate or…
drilling operations 2 min read
Drill-string
Drill-string is the major component of a drilling system. Usually, it is made up of drill-pipes, drill-collars, stabilizers and a…