دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (obsolete) casinghead. Glen T. Braden invented a casinghead in the 1920s that became so popular that all casingheads were called bradenheads.

a packer or packoff installed at surface on a well that enables the use of one size pipe inside another and allows flow into or out of each pipe separately.

n: see casinghead gas.

n: a process used to repair a hole in the casing by pumping cement down tubing or drill pipe. First. the casinghead, or bradenhead, is closed to prevent fluid from moving up the casing. Then the rigs pumps are started. Pump pressure moves the cement out of the tubing or pipe and, since the top of the casing is closed, the cement goes into the hole in the casing. The tubing or pipe is pulled from the well and the cement allowed to harden. The hardened cement seals the hole in the casing. Although the term bradenhead squeezing" is still used, the term ,."bradenhead" is obsolete. See annular space. casinghead, squeeze.

n: a perforating gun run into the casing string. Most perforating guns are run into the well through the tubing string. casing hanger n: a circular device with a frictional gripping arrangement of slips and packing rings used to suspend casing from a casinghead in a well.

n: A device installed with shaped charge or bulletfor, used for casing perforating.

a large perforating gun, run into a well without tubing.

n: a heavy, flanged steel fitting connected to the first string of casing. It provides a housing for slips and packing assemblies, allows suspension of intermediate and production strings of casing, and supplies the means for the annulus to be sealed off. Also called a spool.

n: gas produced with oil.

n: a contract used by industry for the purchase and sale of casinghead gas.

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 Because the standard derrick must be assembled piece by piece, it has largely been replaced by the mast, which can be lowered and raised without disassembly.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: a plant equipped to remove liquid constituents from casinghead gas or wet gas.

a facility for removal of liquids from gas.

v: to install casing so that it is supported in the casinghead by slips.

installing casing to the casing set point.