Friday, June 26, 2009


A Mud pump is a reciprocating plunger device designed to circulate drilling fluid down the drill string and back up the annulus.
Mud pumps come in a variety of sizes and configurations but for the typical petroleum drillin
rig, the triplex (three piston/plunger) mud pump is the pump of choice. Duplex mud pumps (two piston/plungers)have generally been replaced by the triplex pump, but are still common in developing countries. A later development is the Hex pump with six piston/plungers.


A steam engine is a heat engine that performs mechanical work using steam as its working fluid.
Steam engines (heat engines using boiling water to produce mechanical motion) have a long history, going back at least 2000 years. Early devices were not practical power producers, but more advanced designs producing usable power have become a major source of mechanical power over the last 300 years, enabling the industrial revolution, beginning with applications for mine water removal using vacuum engines. Subsequent developments using pressurized steam and conversion to rotary motion enabled the powering of a wide range of manufacturing machinery anywhere water and coal or wood fuel could be obtained, previously restricted only to locations where water wheels or windmills could be used. Significantly, this power source would later be applied to prime movers, mobile devices such as steam tractors and railway locomotives. Modern steam turbines generate about 80 percent of the electric power in the world using a variety of heat sources.