دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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.

bottom hole shut-in pressure.

n: the dissipation of energy in motion of any type. especially oscillatory motion, and the consequent reduction of decay of the motion.

n: a fluid, such as water, oil, or acid, used in hydraulic fracturing. The fluid carries propping agents that hold open the formation cracks after hydraulic pressure dissipates. See acid fracturing, hydraulic fracturing, propping agents.

initial shut-in pressure. Used to isolate the formation fracturing or injection effect from the friction effects.

n: 1. a triangular sea-level extension of land shaped like the Greek letter Δ. 2. a depositional environment in which riverborne sediments accumulate as the flow energy of the river is dissipated in the ocean.

n: a barometer that uses mercury to measure atmospheric pressure. Cistern barometers and siphon barometers are the two types of mercury barometer.

a geologic period of time from 320 to 265 million years ago.

n: a tube mounted at the bottom of a sucker rod pump and inside a gas anchor to provide a conduit into the pump for well fluids that contain little or no gas.

a siphon tune on a downhole pump.

n: (OCSIP) an MMS program that generates reports and documents to assist state and local officials in planning for potential impacts resulting from offshore oil and gas exploration, development, and production activities.