دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device that secures, or fastens, equipment. In producing wells with sucker rod pumps, a gas anchor is a special section of perforated pipe installed below the pump. It provides a space for gas to break out of the oil. In offshore drilling, floating drilling vessels are often secured over drill sites by large anchors like those used on ships. For pipelines, a device that secures pipe in a ditch.

n: Means of holding the deadline to the derrick or substructure. Usually this is the primary element of the weight indicator

a device with slips that holds equipment in the wellbore.

n: Refers to the end of the drilling line which is not reeled on the hoisting drum of the rotary rig. This end of the drilling line is usually anchored to the derrick substructure and does not move as the traveling block is hoisted, hence the term dead line.

n: see deadline tie-down anchor.

n: A device to which the deadline is attached, securely fastened to the derrick substructure.

n: a device to which the deadline is attached, securely fastened to the mast or derrick substructure. Also called a deadline anchor.

n: See dead line anchor.

n: a large load-bearing structure, usually of bolted construction. In drilling, the standard derrick has four legs standing at the comers of the substructure and reaching to the crown block. The substructure is an assembly of heavy beams used to elevate the derrick and provide space to install blowout preventers, casingheads, and so forth. Because the standard derrick must be assembled piece by piece, it has largely been replaced by the mast, which can be lowered and raised without disassembly. Compare mast.

n: A large load-bearing structure from which the drill string is suspended.

The elevated section of a rig that rises above the substructure and houses the crown block and draw works.

n: The metal base used to install derrick mask under the legs of derrick mask.

n: See derrick substructure.

n: the drilling rig installed on the two common derrick bases which arepiggyback

n: the derrick base that contains layers box structure.

n: a windbreak used around the rig floor, engines. substructure. and other areas to protect the crew from cold winds during winter operations. Windbreaks are constructed of canvas (tarp),wood, or metal. preferential right of purchase n: a prior right of purchase reserved to buy an oil and gas interest by meeting the terms of a proposed sale of the interest to any other party.