دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A drilling method that make fluid column pressure in the well balance with formation pressure. It can improve ROP obviously, protect reservoir, and decrease or avert mud eroding and lossing.

n: The commercial artificial diamond. It is a ball composed by more or least radiated slender crystal of diamond. There is no obvious cleavage face. It has high abrasion resistance and mainly is used for manufacturing diamond tool.

n: either of two arbitrary scales-one for liquids lighter than water and the other for liquids heavier than water-that indicates specific gravity in degrees. bbl abbr: barrel. bbV acre-ft abbr: barrels per acre-foot. bbVd abbr: barrels per day. Bcf abbr: billion cubic feet. Bcf/d abbr: billion cubic feet per day. b/d abbr: barrels per day;often used in drilling reports. BID abbr: barrels per day. BOC abbr: bottom dead centre

ball valve.

proportion of capillary bound fluids occupying effective porosity.

n: A new development of designing for section of directional well. This section can improve well status of directional well obviously.

n: a hindrance to movement of fluids within the formation rock of a reservoir. Permeability barriers include obvious problems, such as shale lenses and calcite or clay deposits, and less obvious ones, such as porosity changes.

n: packed bed that surrounded permeable bed, it is impervious bed or poor permeable bed.




a barrier to movement of a fluid through the rock. This may be a change in the rock where the pores are no longer connected or even present, or secondary mineral growth that filling in the pore throats and natural fractures. In one sense, a permeability b

n: under theexternal load, the rock presents obviously plastic deformation bbefor the it cracked,

the connection between the pores, often a fraction of the pore size and an obvious restriction.

n: fatigue failure that without any obvious cause beforehand.