دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: 1. to explode nitroglycerine or other high explosives in a hole to shatter the rock and increase the flow of oil;now largely replaced by formation fracturing. 2. in seismographic work, to discharge explosives to create vibrations in the earths crust. See seismograph.

vertical to horizontal direction change in < 40 ft vertical travel (approximately 2.2o per foot).

n: radiation that is visible as light.

n: 1. a decrease in oil volume caused by evaporation of solution gas or by lowered temperature. 2. the suction in volume or heating value of a gas stream due to removal of some of its constituents. 3. the unaccounted loss of products from storage tanks.

the amount to which a reservoir barrel of oil shrinks when gases are removed at surface. Reciprocal of the formation volume factor.

v: I. to close the valves on a well so that it stops producing. 2. to close in a well in which a kick has occurred.

v: 1. shutting off the bloeout preventer when overflow. 2. shutting off the valve of the production well to stop running.

adj: shut off to prevent flow. Said of a well, plant. pump. and so forth, when valves are closed at both inlet and outlet.

stop a well from flowing and close the valves.

n: (SIBHP) the pressure at the bottom of a well when the surface valves on the well are completely closed. It is caused by formation fluids at the bottom of the well.

n: (SIP) the pressure when the well is completely shut in, as noted on a gauge installed on the surface control valves. When drilling is in progress, shut- in pressure should be zero, because the pressure exerted by the drilling fluid should be equal to or greater than the pressure exerted by the formations through which the wellbore passes. On a flowing, producing well, however, shut-in pressure should be above zero.

n: The surface force per unit area exerted at the top of a wellbore when it is closed at either the Christmas tree or the BOP stack. The pressure may be from the formation or an external and intentional source. The SIP may be zero, indicating that any open f

the pressure at a datum when the well is not flowing. The shut in pressure is usually either surface shut-in pressure or bottom hole shut-in pressure.