دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: variation of barite. See barite.

n: an extrusive igneous rock that is dense, fine grained, and often dark gray to black. Compare gabbro.

the most common volcanic rock. Usually fine grained.

n: a substance capable of reacting with an acid to form a salt. A typical base is sodium hydroxide (caustic),with the chemical formula NaOH. For example, sodium hydroxide combines with hydrochloric acid to form sodium chloride (a salt) and water. This reaction is written chemically as NaOH + HCl -+ NaCI + H2O.

n: the replacement of cations associated with a clay surface by those of another element, e.g., the conversion of sodium clay to calcium clay.

the starting fluid for a pill or a treatment. Before additives.

n: the volume of gas needed as permanent inventory to maintain adequate underground storage reservoir pressures and deliverability rates throughout the withdrawal season.

the gas required in a storage reservoir to cycle the working gas volume.

n: I. the fore and aft reference line at the upper surface of the flat plate keel at the centre line for flush shell plate vessels. 2. the thickness of the garboard strake above that level for vessels having lap seam shell plating.

n: as applied to gas, a given sendout of gas remaining fairly constant over a period of time and usually not temperature sensitive. For example, residential base load is a given send-out of gas consumed by clothes dryers, water heaters, and in cooking. base map n: horizontal representation of nongeologic surface features such as streams, roads, buildings, survey benchmarks, and property lines.

the efficient delivery of proved developed reserves through excellence in Reservoir, Well and System management.