دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: in drilling operations, an insert that fits into the opening of a master bushing and accommodates the slips.

n: See insert.

a section of the wellhead or of a tool what allows slips to be inserted to hold pipe or equipment.

n: the rotary drilling system that uses a conventional swivel, a kelly, a kelly drive bushing, a master bushing, and a rotary table to turn the drill stem and bit. Compare top drive.

n: the tool to bear the drill collar stem on the master bushing

n: the process of the kelly bar reaches to top of the master bushing

n pI: slips for drill pipe that fit into the tapered insert bowl of a four-pin master bushing and whose taper length is 12� inches (324 millimetres) long. Compare long rotary slips. See also master bushing, slips.

n: see kelly flat.

n: the exterior surface of the kelly ,slipping and rotating in the master bushing

n: a kelly bushing that has four steel dowels. or pins. that fit into corresponding holes in the master bushing. When the pins are engaged with the holes. the rotating master bushing also turns the kelly bushing. which then turns the kelly and the drill stem. See kelly, kelly bushing, master bushing.

n: a master bushing that has four holes symmetrically positioned on its outside perimeter and into which fit four corresponding steel dowels. or pins. on the kelly bushing. When the pins are engaged into the holes and the master bushing turns. the kelly bushing also turns. See kelly bushing, master bushing.

n: a two-piece master bushing that has a jointed, swinging device (a hinge) on each half into which large pins fit to hold the bushing together. A two-piece insert bowl to hold the slips fits inside this type of master ooshing. Compare solid master bushing, split master bushing. See also insert bowl, master bushing, slips. In.B abbr: hydrophilic-lipophilic balance.

n: 1. a cylindrical object, rounded, blunt, or chisel-shaped on one end and usually made of tungsten carbide, that is inserted in the cones of a bit, the cutters of a reamer, or the blades of a stabiliser to form the cutting element of the bit or the reamer or the wear surface of the stabiliser. Also called a compact. 2. a removable part molded to be set into the opening of the master bushing so that various sizes of slips may be accommodated. Also called a bowl. 3. a removable, hard-steel, serrated piece that fits into the jaws of the tongs and firmly grips the body of the drill pipe or drill collars while the tongs are making up or breaking out the pipe. Also called die.

n: A section on a log print that gives the scales of the curves displayed and the depth scale. There usually is an insert at the beginning and end of each interval surveyed.