Tubulars - Make-Up TorqueMake-Up TorquePart of the strength of the drillstring and the seal for the fluid conduit areboth contained in the tool joints. It is very important therefore, that thecorrect make-up torque is applied to the tool joints. If a…Read More
Buoyancy & Hookload - IntroductionBuoyancy & HookloadIntroductionDrillstrings weigh less in weighted fluids than in air due to a fluid propertyknown as buoyancy. Therefore, what is seen as the hookload is actually thebuoyed weight of the drillstring. Arch…Read More
Tubulars - Drill Pipe ClassificationDrill Pipe ClassificationDrill pipe class defines the physical condition of the drill pipe in terms ofdimension, surface damage, and corrosion. Drill pipe class is indicated bypaint bands on the drill pipe according to the fo…Read More
Tubulars - Drill Pipe GradesDrill Pipe GradesThere are four common grades of drill pipe which define the yield strengthand tensile strength of the steel being used.Grade E, composed of a lower grade of steel, is sometimes referred to as“mild” steel, bec…Read More
Tubulars - Tool JointsTool JointsTool joints are short sections of pipe that are attached to the tubing portionof drill pipe by means of using a flash welding process. The internallythreaded tool joint is called a “box”, while the externally threa…Read More
Tubulars - Make-Up TorqueMake-Up TorquePart of the strength of the drillstring and the seal for the fluid conduit areboth contained in the tool joints. It is very important therefore, that thecorrect make-up torque is applied to the tool joints. If a… Read More
Tubulars - Drill Pipe ClassificationDrill Pipe ClassificationDrill pipe class defines the physical condition of the drill pipe in terms ofdimension, surface damage, and corrosion. Drill pipe class is indicated bypaint bands on the drill pipe according to the fo… Read More
Tubulars - Drill Pipe GradesDrill Pipe GradesThere are four common grades of drill pipe which define the yield strengthand tensile strength of the steel being used.Grade E, composed of a lower grade of steel, is sometimes referred to as“mild” steel, bec… Read More
