دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The nipple whose whole length is lathed with thread.

n: a nipple or restriction placed in a line (a pipe) to reduce the rate of flow of fluid through the line. Beans are frequently placed in Christmas trees to regulate the flow of fluids corning out of the well. Also called a flow bean. See Christmas tree.

a flow restriction common in downhole chokes, surface chokes and some SSSVs.

n: a short length of pipe (a nipple) installed on top of the blowout preventer. The top end of the nipple is flared, or belled, to guide drill tools into the hole and usually has side connections for the fill line and mud return line.

a funnel shaped pipe at the top of the casing that guides tool string entry and may have a side port for fluid pumping.

nipple that can be blocked off from formation pressure and give a false pressure measurement.

n: the assembly of well-control equipment including preventers. spools. valves. and nipples connected to the top of the wellhead.

n: a device used in the flow cross of the Christmas tree as a thread protector while the rods are being run. Because it is brass, it prevents friction sparks.

n: a threaded nipple with a rounded, closed end used to stop up a hole or close off the end of a line.

a screw-in plug, normally used at the bottom of a string if no fluid entry is desired.

n: a swage nipple, usually beveled, installed on the top of a string of pipe that does not extend to the surface. It prevents a smaller string of pipe or tools from hanging up on the top of the column when it is run into the well.

n: The joint that is installed at the top of the casing string which doesnt reach to the earth surface.

n: The nipple of alloy steel whose bottom presents cone. There are center bore and several pieces of fraises with kerf in it. Mainly used for chipping fracture of casing.