دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: impermeable shales, highly compressed by overburden pressure, that are characterized by large amounts of formation fluids and abnormally high pore pressure.

n: the pressure to which a formation is subjected by its overburden. Also called ground pressure, lithostatic pressure, rock pressure.

n: the load exerted by a column of rock.under normal conditions this pressure is approximately 1psi/ft,this is also known as lithostatic pressureor overburden pressure.

n: the overburden pressure enforces a stress to any point in the layer , its direction is downward. When open a hole , the unbalance happen and produce a horizontal
foce that its direction to the holebore.

n: see geostatic pressure.

n: see geostatic pressure.

overburden pressure of rocks at a depth.

n: the pressure exerted by the rock strata on a formation of interest. It is usually considered to be about I pound per square inch per foot (22.621 kilopascals per metre).

n: overburden pressure of some point in layer refers to the total quality of layer base and fluid in the pores above the layer causes the pressure.

n: The pressure of unit area at a given depth,which caused by the total weight of rock and liquid between the mineral at the depth.