دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cylindrical tube placed around the retrieving neck of a retrievable bridge plug to catch debris or frac balls.

a cylinder at surface to catch ball sealers before the fluid is routed through the choke.

n: the theory that the earths landforms assumed their present configuration in a brief episode at the beginning of geologic history-possibly in a single great catastrophic event-and have remained relatively unchanged since that time. Compare uniformtarianism. catcher n: a device fitted into a junk basket that retains the junk picked up by the basket catch samples v: to obtain cuttings for geological information as formations are penetrated by the bit The samples are obtained from drilling fluid as it emerges from the wellbore or, in cable-tool drilling, from the bailer. Cuttings are carefully washed until they are free of foreign matter, dried, and labelled to indicate the depth at which they were obtained.

n: A device fitted into a junk basket and acting as a trap door to retain the junk.

n: the part of the core barrel that holds the formation sample.

n: See core gripper.

n: The catcher consisted by keepers with cutouts made by tool steel or alloy steel. Suitable for coring in competent formation.

n: The catcher consisted by cup spring base and leaf springs.

n: The catcher consisted by circlip base and leaf springs.

n: A kind of catcher installed with circlip.

n: The cylindrical cage for installing catcher.