دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a freshwater drilling mud using calcium oxide (lime) or calcium sulphate (gypsum) to retard the hydrating qualities of shale and clay formations, thus facilitating drilling. Calcium-treated muds resist salt and anhydrite contamination but may require further treatment to prevent gelation (solidification) under the high temperatures of deep wells.

n: natural gas trapped in the upper part of a reservoir and remaining separate from any crude oil, salt water, or other liquids in the well.

a complex force governing some fluid movements, especially in smaller pores. Capillary action is the result of adhesion and surface tension forces. Adhesion (or attraction) by a fluid to the walls of a pore creates an attracting (or repelling) force, whic

n: 1. a disklike plate of anhydrite, gypsum, limestone, or sulphur overlying most salt domes in the Gulf Coast region. 2. impermeable rock overlying an oil or gas reservoir that tends to prevent migration of oil or gas out of the reservoir.

n pi: buyers who can purchase natural gas from only one supplier and have no access to alternate fuel sources. This term is usually applicable to residential and small commercial users, but can, under certain conditions of alternative fuel availability, be applied to large industrial and electric utility users as well. Also called core customers.

n: Refers to the carbon dioxide bullet used as the pressure origin of filter press of drill fluid.

n: 1. a salt of carbonic acid. 2. a compound containing the carbonate radical (CO3) 3. a carbonate rock.

n: The different carbonate of alkaline earth element.

any of the many rocks composed of calcium carbonate (limestone) or magnesium carbonate (dolomite) or other acid soluble rocks with a common CO3-2 ionic charge. The pores may be poorly connected and matrix permeability (non fractures) are often much lower

n: A kind of organic acid root. Producing organic salt when mixing with diatomic metal cation.

n: a nonfermenting cellulose product used in drilling fluids to combat contamination from anhydrite (gypsum) and to lower the water loss of the mud.

n: A production manufactured by acetic acid chloride after plant fibre is alkalized. Usually used as filtrate reducer and adhesion promoter.

n: A kind of amylum derivant manufactured by amylum and acetic acid chloride. Usually used for filtrate reducer of drill fluid and improving heat proof capacity of drill fluid.

a natural starch used in drilling fluids.