دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a section of a borehole in which excessive wall cake has built up, reducing the hole diameter and making it difficult to run the tools in and out. Compare keyseat.

n: The well section that its diameter reducing because mud cake over thick or layer swelling.

a restricted place in the bore hole, caused by wall cake, dog leg, deviation change or other factor.

n: (megajouIe) the unit of service given by a hoisting line in moving 1 ton of load over a distance of 1 mile.

n: the part of a deflection toolusually marked with a scribe line-that is oriented in a particular direction to make a predetermined deflection of the wellbore.

n: The perpendicular plane along the direction of application of kickover tool.

n: a worker on a well service or workover rig who helps run packers and other tools into the well.

n: A kind of ways that injecting drill fluid into the annular or wellbore,which be used to control overflow and blowout.


a dynamic kill procedure, used in low pressure wells, good for a short period of time. A typical top kill is to pump 5 bbl of fluid in the tubing, offsetting the tubing pressure as the fluid falls. The well must be monitored for pressure or flow and the p

n: The pressure of unit area at a given depth,which caused by the total weight of rock and liquid between the mineral at the depth.

turn over to production.

n: the relation of a prover or a transducer calibration, through a step-bystep process, to an instrument or group of instruments calibrated and certified by a national or international primary standard.

the ability to trace the components of a product through out the supply and manufacturing system from raw material to finished and installed product.

n: a rig mounted on a wheeled and towed trailer. It has a mast, a rotary, and one or two engines. The rig systems are powered by a prime mover.