دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a substance, such as tetraethyl lead or other compounds, added to the fuel of an internal-combustion engine to prevent detonation of the fuel. Antiknock compounds effectively raise the octane rating of a fuel so that it burns properly in the combustion chamber of an engine. See octane rating, tetraethyl lead.

n: the device in a spark-ignition internal-combustion engine in which fuel and air are mixed in controlled quantities and proportions.

n: the power supplied to a drilling rig by diesel engines driving electric generators;used widely. dieselelectric rig n: see electric rig. diesel engine n: a high-compression, internal-combustion engine used extensively for powering drilling rigs. In a diesel engine, air is drawn into the cylinders and compressed to very high pressures;ignition occurs as fuel is injected into the compressed and heated air. Combustion takes place within the cylinder above the piston, and expansion of the combustion products imparts power to the piston.

n: an internal-combustion engine used to power a drilling rig. From two to six engines are used on a rotary rig and are usually fueled by diesel fuel, although liquefied petroleum gas, natural gas, and, very rarely, gasoline can also be used.

n: the internal combustion engine used as drilling rig power

n: a heat engine in which the pressure necessary to produce motion of the mechanism results from the ignition or burning of a fuel-air mixture within the engine cylinder.

n: 1. an oil well pumping unit that is powered by an internal-combustion engine, electric motor, or rod line from a central power source. The walking beam of the pumping jack provides reciprocating motion to the pump rods of the well. See walking beam.2. a device that is manually operated to turn an engine over for starting. v: to raise or lift.

n: the fitting that hoist the weight and equipment.

n: (LPG) a mixture of heavier, gaseous, paraffinic hydrocarbons, principally butane and propane. These gases, easily liquefied at moderate pressure, may be transported as liquids and converted to gases on release of the pressure. Thus, liquefied petroleum gas is a portable source of thermal energy that finds wide application in areas where it is impractical to distribute natural gas. It is also used as a fuel for internal-combustion engines and has many industrial and domestic uses. Principal sources are natural and refinery gas, from which the liquefied petroleum gases are separated by fractionation.

n: 1. an accessory system of piping to a main piping system (or another conductor) that serves to divide a flow into several parts, to combine several flows into one, or to reroute a flow to anyone of several possible destinations. 2. a pipe fitting with several side outlets to connect it with other pipes. 3. a fitting on an internal-combustion engine made to receive exhaust gases from several cylinders.

a junction or center for connecting several pipes and selectively routing the flow.

n: an internal-combustion engine or a turbine that is the source of power for driving a machine or machines.

n: an electric motor or internal combustion engine that is the source of power on the drilling rig.

the main type of power source for an application.

n: a device that fits into the cylinder of an internal-combustion engine and that provides the spark for ignition of the fuel-air mixture during the combustion stroke of the piston. It carries two electrodes separated by an air gap;current from the ignition system discharges across the gap to form the spark.