دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a method for killing well pressure in which circulation is commenced immediately and mud weight is brought up in steps, or increments, usually a point at a time. Also called circulate- andweight method.

n: See circulate-and-weight method.

a well pressure control operation in which circulation is started immediately and mud density is brought up in steps until the well has been completely circulated to the kill weight fluid.

n: refer toequivalent circulating density

n: the mud density that control well blowout or overflow.

n: see mud weight.

n: The mass per unit volume of a drilling fluid, synonymous with mud density. Weight is reported in lbm/gal (also known as ppg),kg/m3 or g/cm3 (also called specific gravity or SG),lb/ft3 or in hydrostatic gradient, lb/in2/ft (psi/ft) or pptf (psi/1000 ft).

the specific gravity of the mud expressed in lb/gal, kg/m3, etc.

n: a device that automatically records the weight or density of drilling fluid as it is being circulated in a well.

n: the mud quality of unite volume.

n: a measure of the density of a drilling fluid expressed as pounds per gallon, pounds per cubic foot, or kilograms per cubic metre. Mud weight is directly related to the amount of pressure the column of drilling mud exerts at the bottom of the hole.

n: in mud terminology, this refers to the density of a drilling fluid. This normally expressed in either 1b/cuft, psi hydrostatic pressure per 1,000ft. Of depth.

mud density.

n: an instrument installed in the mud pits that has a recorder mounted on the rig floor to provide a continuous reading of the mud weight.

n: see mud density recorder.

n pi: 1. value that indicates hook load or force, read from a weight indicator;1 point = 1,000 pounds, or 500 decanewtons. 2. in mud density measurement, the portion of the muds weight expressed in decimal points. For example, a mud that weighs 12.2 pounds per gallon (1,461.8 kilograms per cubic metre) weighs two points more than 12 pounds ( 1,438 kilograms). Also, if a 12.2 potmd-per-gallon muds density is increased to 12.5 pounds per gallon (1,497.8 kilograms per cubic metre),the density has been raised by 3 points.

n: the small amount of additional mud weight carried over that needed to balance formation pressure to overcome the pressure-reduction effects caused by swabbing when a trip out of the hole is made.

any mud density over the amount needed to balance the formation with a static mud column. Related to overbalance.