دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a means of cementing casing in a well so that the casing may, if necessary, be retrieved with minimum difficulty. A special mud, usually an oil mud, is placed in the well ahead of the cement after the casing has been set. Nonsolidifying mud is used so that it does not bind or stick to the casing in the hole in die area above the cement Since the mud does not gel for a long time, the casing can be cut above the cemented section and retrieved. Casing packs are used in wells of doubtful or limited production to permit reuse of valuable lengths of casing.

n: The cementing method that flow in some non-petrified special fluid at first before cementing. The casing above cement can be retrieved since this kind of drill fluid is non-condensing.

n: refer tohigh-filter-loss inverted emulsion mud

n: a kind of invert oil mud whose filter loss is 8-12ml under high temperature and pressure and whose content of liquid phase and colloid is low

n: a drilling fluid that contains up to 50% by volume of the weater,which is distributed as droplets in the continuous oil phase.emulsifying agents and other additives are also present.

n: an oil mud in which fresh or salt water is the dispersed phase and diesel, crude, or some other oil is the continuous phase. See oil mud.

n: a substance usually colloidal and easily wet by oil.

n: Pertaining to an attraction for oil by a surface of a material or a molecule. This term is applied to the oil-wetting behavior of treatment chemicals for oil muds. Lipophilic oil-mud additives are required because most minerals drilled and additives such

n: the filter loss of invert oil mud below 2ml at high pressure and high temperature .

n: the filter loss of invert oil mud below 2ml at high pressure and high temperature .

n: a drilling mud, e.g., oil-base mud and invert-emulsion mud, in which oil is the continuous phase. It is useful in drilling certain formations that may be difficult or costly to drill with water-base mud. Compare oil-emulsion mud.

n: 1.A mud in which the external phase is a product obtained from an oil, such as diesel oil or mineral oil. 2.More generally, a mud system that has any type of nonaqueous fluid as the external phase. This definition would include the newer variety of oil mu

n: a drilling or workover fluid in which oil is the continuous phase and which contains from less than 2 percent and up to 5 percent water. This water is spread out, or dispersed, in the oil as small droplets. See invert emulsion mud. oil mud.