Multilateral drilling programme 1. introduction The purpose of this outline program is to set the…

Underreaming Underreaming procedures vary from tool to tool. However, it shall be verified that: the…

Conversions factors This article presents the main conversion factors for oil field and SI units.…

Acronyms and Abbeviations Main acronyms/ abbreviations used in the oil industry A AH                  Along hole…

Standard Drilling Tools Some of the standard drilling tools commonly used in drilling are briefly…

Mechanisms of rock cutting Bits and coreheads cut rock by crushing, shearing, grinding or jetting.…

Mechanical power to the bit / corehead This article describes  the various ways of transmitting…

Drill string vibrations The existence of substantial vibrations in the drillstring have caused much trouble…