دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: It is caused by the different of actual and calculated result in the process of drilling prospect.

result of impacting one or more potential outcomes from an uncertainty assessment with risk. Risks might take the form of specific losses (i.e., costs),the impact of the failure (failure to achieve a goal),or other representation. Risk weighting is expr

resistivity of the mud filtrate.

v: to initiate flow by alternately bleeding pressure from, and closing off the casing and tubing of, a well that contains liquid.

n: The rock stratum that mainly contain sodium chloride crystal .




a diverter that is used in acids. Best for high permeability and fractures.

n: A kind of standard that represent the hardness of material.Its code is HR.


hardness measuring scales relating penetration of a small indentation ball to ultimate yield strength, used to establish steel harness. Rockwell C scale is used in determination of metal hardness limit to control stress chloride cracking.

n: on an engines piston rod, a part on the bottom of the rod that is bolted onto the top part of the rod. To install a piston rod onto the crankshaft, one half of the rod bearing is inserted into the top part of the rod and the other half into the rod cap. The top part of the rod and the rod cap are then placed on the crankshaft and the cap bolted to the top part.

n: lightning arrester assembly using two rods end-to-end with the gap separating rods determining arcing voltage.

n: a drilling bit with two or morecones mounted on bearings. The cutters consist of steel teeth or tungsten carbide inserts. Also called a rock bit.

a bit with multiple rotating cones that bring cutters into contact with the formation as the string is rotated.

n: an anticline formed when the dip of a growth fault approaches the horizontal at depth and deposition is faster on the downthrown side, which tends to roll over" or curl downward.