What does Deviated Hole mean? A deviated hole is a wellbore that is inclined and it's not…

Hole cleaning can be a real problem when drilling deviated wells. It has been proved…

Equivalent Circulating Density (ECD) is the effective density that combines current mud density and annular pressure…

 Slow Circulation Rate is a circulation rate which will be used in well kill operation. Typically,…

For many years, engineers have known that hydraulics play an Important role in cleaning the…

Oil well drilling utilizes tri-cone roller, carbide embedded, fixed-cutter diamond, or diamond-impregnated drill bits to wear…

In geotechnical engineering, drilling fluid is used to aid the drilling of boreholes into the earth. Often used while…

The material in this section provides a straightforward explanation of what is covered by the…

There are several different types of drilling fluids, based on both their composition and use.…

Air drilling—also known as pneumatic percussion drilling[1] —is an underbalanced drilling (UBD) technique in which gases, usually compressed…