دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a nonprofit organisation sup- ported jointly by the American Petroleum Institute and the Society of Automotive Engineers, Inc. It administers work of the CFR and other committees that correlate test work and other studies on fuels, lubricants, engines, and engine equipment. Address: 219 Perimeter Centre Parkway, Suite 400;Atlanta, GA 30346;(770) 396-3400.

n: a lubricant for the threads of oilfield tubular goods. v: to apply thread lubricant.

n: A generic term applied to all types of thread lubricants. For casing, tubing and line pipe use lubricants specified in API Bulletin 5A. For tool joints and drill collars less than 7 inches OD, use a thread lubricant containing not less than 40-60% by weig

pipe thread dope used to lubricate and seal the threaded connection.

n: when essentially waterinsoluble greasy materials (e.g., emulsifiers. lubricants) separate out of drilling fluids.

n: A mud additive for lowering torque (rotary friction) and drag (axial friction) in the wellbore and to lubricate bit bearings if not sealed. Lubricants may be solids, such as plastic beads, glass beads, nut hulls and graphite, or liquids, such as oils, syn

materials that reduce torque and drag. May be oil, synthetic (polymer) liquids, graphite, glycols, glycerines, etc.

n: salt of stearic acid that is a saturated, 18-carbon fatty acid. Certain compounds, such as aluminum stearate, calcium stearate, and zinc stearate, are used in drilling fluids as defoamers or lubricants. Stearates can also be used as surfactants in air drilling to prevent small quantities of water from creating mud that could clog the hole.