دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a common diverter. It can sublime, or go directly from a solid to a gas.

a fluid loss additive for cement.

n pi: a slurry of portland cement and water and sometimes one or more additives that affect either the density of the mixture or its setting time. The portland cement used may be high early strength, common (standard),or slow setting. Additives include accelerators (such as calcium chloride),retarders (such as gypsum),weighting materials (such as barium sulphate),lightweight additives (such as bentonite),or a variety of lost circulation materials (such as mica flakes).

n: The bonding material for cementing.

n: finely shredded cellophane used as a lost circulation material for cement.

n: a kinf of inert material with falt shape and small thickness ,usually used as block agent of porosity leaking formation

n: it is referred to clay swells and flakes off after water influx, one of factors that leads to hole distabilization.

n pi: materials added to the mud in varying amounts to control or prevent lost circulation. Classified as fiber, flake, or granular.

n: the material can seal the loss layer.

n: (LCM) a substance added to cement slurries or drilling mud to prevent the loss of cement or mud to the formation. See bridging materials.

n: materials added to the mud to control or prevent lost circulation. These material are added in varying amounts and are classified as fibre, flake, or granular.

n: a naturally occurring flake material of varying size used in combatting lost circulation. Chemically an alkali aluminum silicate.

a silica mineral, often present as ultra thin flakes and sometimes mobile.