دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The study of the physical characteristics and behavior of rock. rock mechanics can include analysis of and relationships between properties such as velocity, density, porosity, permeability, shear strength, and bending and crushing behavior, as well as th

the study of mechanical rock behaviors under changing loads and stresses.

n: see geostatic pressure.

n: a term used for the initial pressure of gas in a well.

properties that describe the physical state of a rock;porosity, permeability, UCS, density, etc.

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




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

the stress level at which rock fails under shearing or distorting load. Generally the same as compressive strength.

n: a distinctive body of rock that can be identified by its lithologic or structural features regardless of its fossils or time boundaries;commonly, a formation. Compare time stratigraphic unit.

n: all of the properties relating to the grain-to-grain relationships of a rock. Textural properties include chemical composition, grain shape and roundness, grain size and sorting, grain orientation, porosity, and permeability. See clastic texture, crystalline texture.

n: a bellrank device that transmits the movement of the pushrod to the valves in an engine.

pressuring up with supply gas and then opening the well. This works for wells without packers where the annulus can be used as a pressure charge chamber. When a well has a packer, the effect may also work if the liquids are pushed into the formation and t

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.