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: a flanged connection at the top of the oil well casing.

n: The flange coupling device of the top of oil well casing.

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 Although the term bradenhead squeezing" is still used, the term ,."bradenhead" is obsolete.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 old kind of method of cementing. Packing cement into the formation by closing the casing head and annular and appling pressure to borehole. This method does not need packer, but it cannt gurrantee that cement slurry can be packed into the bed of intere

n: a bradenhead pack;a method of gravel packing in which no packer is used.