دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The physicist A. E. Boycott found that the blood cell deposits faster when test tube deflects, especially 40°-50°, than when test tube is vertical. The same situation will be found in the drilling fluid in the horizontal well. That is why people call this

n: a measure of the ability of a single fluid (such as water, gas, or oil) to flow through a rock formation when the formation is totally filled (saturated) with that fluid. The permeability measure of a rock filled with a single fluid is different from the permeability measure of the same rock filled with two or more fluids. Compare effective permeability, relative permeability.

permeability to a single phase fluid in a cleaned core.

n: total pressure measured from an absolute vacuum. It equals the sum of the gauge pressure and the atmospheric pressure. Expressed in pounds per square inch.

the reading of gauge pressure plus the atmospheric pressure.

n: any chemical compound. one element of which is hydrogen, that dissociates in solution to produce free hydrogen ions. For example, hydrochloric acid. HCI, dissociates in water to produce hydrogen ions, H+, and chloride ions, CI-. This reaction is expressed chemically as HCI + H+ + CI- . See ion.

a reactive material with a low pH. Common oilfield mineral acids are HCl and HCl/HF.

n: a naturally occurring clay that, after activation, usually with acid, is used mainly as a decolourant or refining agent, and sometimes as a desulphuriser, coagulant, or catalyst.

chemical analysis of the acid concentration and other chemical and physical measurements in the returning acid.

n: a gas that forms an acid when mixed with water. In petroleum production and processing, the most common acid gases are hydrogen sulphide and carbon dioxide. Both cause corrosion, and hydrogen sulphide is very poisonous.

n: The mixture made by gas and water presents acidity. The gas is acid gas. The usual acid gases are hydrogen sulphide and carbon dioxide in oil and gas drilling. Both of them are acrid and hydrogen sulphide is very toxic.


any produced gas, primarily H2S and CO2 that form an acid when produced in water.

v: The natural gas which is consisted of a number of hydrogen sulphide and carbon dioxide kick

n: material of high specific gravity formed during the chemical refining treatment of oils by sulphuric acid and usually separable by settling or centrifuging. Also called acid tar.

n: the quality of being acid. Relative acid strength of a liquid is measured by pH. A liquid with a pH below 7 is acid. See pH.

n: The relative acid strength of liquids as measured by pH. A pH value below 7. See pH.