دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: automatic, self-regulating control of equipment, systems, or processes. See instrumentation.

n: a transformer with only one winding, part of which is used for either the primary or secondary conductor, and part of which is used as both primary and secondary conductors.

autonomous underwater vehicle.

n: The bearing that can prevent the rotary table jumping due to the component force of gear.

n: a braking mechanism on the drawworks, supplemental to the mechanical brake, that permits the lowering of heavy hook loads safely at retarded rates without incurring appreciable brake maintenance. There are two types of auxiliary brake-the hydrodynamic and the electrodynamic. In both types, work is converted into heat, which is dissipated through liquid cooling systems. See electrodynamic brake, hydrodynamic brake.

n: The additional device of mechanical brake.Decreasing the maintenance of brake system and making landing heavy loading safe. There are two kinds of forms: one is hydrodynamic, the other is dynamic.

n: The matching equipment of drilling rig except main frame. Mainly including generating set, oil, gas, and water storage devices, hydraulic power unit, heat device and movable house.

n: The tool that not fishes junk directly but just changes the condition of the junk to make it convenient for fishing.

n: This schlumberger module provides direct measurements of wellbore fluid resistivity and temperature, also cable tension below the toolstring head. Useful to run in poor hole condition;should allow differentiation of differential sticking and keyseat stic