دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device used to detem1ine direction and angle at which a wellbore is drifting off the vertical. Unlike magnetic surveying instruments, a gyroscopic instrument reads true direction and is not affected by magnetic irregularities that may be caused by casing or other ferrous metals. See directional drilling, directional survey.

n: a kind of inclinometer used to measure the angle of inclination ,angle of orientation using the orientation-keeping ability of the top

n: the flat. horizontal section of the bottom shell plating measured from the centerline of the vessel to the edge of the flat keel plate.

n: tool used to drive the conductor pipe into the ground. The single-acting diesel is the most popular. as it has the most foot -pounds of energy for the weight of the hammer. Other types of hammer include impact and vibrating.

n: refer tobaroid reometer

an unplanned delayed firing of explosives after the initiation attempt - various causes.

n: the rock surface forming the upper side of a fault when the fault plane is not vertical-that is, if the dip is less than 90. Compare footwall.

n: an extremely hard material, usually crushed tungsten carbide, that is applied to the outside surfaces of tool joints, drill collars, stabilisers, and other rotary drilling tools to minimise wear when they are in contact with the wall of the hole.

n: a flat of very hard mterial welded on the pipe bit ,drill collar,stabilizer and the surface of other tools to reduce the abrasion during they rotating in the well

n: a rope, usually of large diameter, used to moor or tow marine vessels.

adj: involving or exposing one to risk. The lists of material or waste that are considered hazardous vary from agency to agency and from regulation to regulation: hazardous materials in transport are regulated by DOT;hazardous substances in the workplace are regulated by OSHA;hazardous waste is regulated under EPAs RCRA;toxic substances are regulated under EPAs TSCA;hazardous air pollutants are regulated under EPAs CAA;and so on. The hazardous list for that regulation is tailored to that purpose.

n: a training level achieved by any employee who has been HAZWOPER trained to assist and support a hazardous materials technician in making certain emergency action decisions. The duties of hazardous materials specialists parallel those of the technician, but require a more directed or specific knowledge of the various substances they may be called on to contain. The hazardous materials specialist also acts as the site liaison with federal, state, local, and other government authorities in regard to site activities.