دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: in reference to tubing under the effects of temperature changes, sucker rod pumping, or high internal pressure, to increase in diameter while decreasing in length. Compare reverse-balloon.

a phenomenon in which fluids are lost to the rock during over-pressured operations, such as found in increased pressures from equivalent circulating density operations, and then flow back when pressure is reduced. This may be confused with a kick.

an increase in pipe O.D. as internal pressure is applied (shortens pipe) or a decrease in diameter (Reverse Ballooning: lengthens pipe) as external pressure is applied.

n: an effect that occurs when certain shale zones are penetrated by the wellbore and the pressure exerted by the drilling mud exceeds the pressure exerted by the shale. The pressure differential causes the borehole to flex, or balloon, and the borehole no longer behaves as a fixed, rigid cylinder.

pressuring and depressuring the tubing (ballooning) to remove plugs or knock scale and other debris loose from the tubing wall.

small, hollow ceramic or glass beads used as a lightening agent for special, ultra light weight cements.

n: a balloon-borne instrument used to measure pressure, temperature, and humidity above the earths surface.

n: in reference to tubing under the effects of temperature changes, sucker rod pumping, or high external pressure, to decrease in diameter while increasing in length. Compare balloon.

n: an optical instrument used to track rising pilot balloons and thus obtain indications of wind directions and speeds above the earths surface.