دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

well head equipment.

n: a ditching machine for pipeline construction that has a large, rapidly rotating set of toothed scoops that lift dirt out of the ditch and feed it onto a conveyor mounted on the side of the machine. The wheel ditcher is used almost exclusively for ditching operations in stable soil.

n: a wheelshaped wrench that is attached to the sucker rod string at the surface and is manually turned to unscrew the string to allow it to be pulled from the well. Also called a back- off wheel or a circle wrench.

n: (nautical) a sprocket tooth in a wildcat.

well head flowing pressure.

v: see heat a connection.

n: oscillation along the longitudinal axis of the drill stem.

n: a long steel casing that uses an inclined plane to cause the bit to deflect from the original borehole at a slight angle. Whipstocks are sometimes used in controlled directional drilling, in straightening crooked boreholes, and in sidetracking to avoid unretrieved fish.

n: A device inserted in a well bore used for deflecting or for directional drilling.

a hardened steel ramp along which a mill turns as it cuts a hole in the side of the casing to start a sidetrack or lateral wellbore.