- 行业: Education; Oil & gas
- Number of terms: 4495
- Number of blossaries: 0
- Company Profile:
The Petroleum Extension Service (PETEX) is a unit of the Division of Continuing Education at The University of Texas at Austin and has been training companies and individuals since 1944.
a special tool made up on the bottom of the drill stem to pick up junk from the bottom of the hole. Most junk retrievers are designed with ports that allow drilling fluid to exit the tool a short distance off the bottom. This flow of fluid creates an area of low pressure inside the tool so that the junk is lifted and caught in the retriever by the higher pressure outside the tool. See junk, junk basket.
Industry:Oil & gas
to pass from one point throughout a system and back to the starting point. For example, drilling fluid is circulated out of the suction pit, down the drill pipe and drill collars, out the bit, up the annulus, and back to the pits while drilling proceeds.
Industry:Oil & gas
the heavy square or hexagonal steel member suspended from the swivel through the rotary table and connected to the topmost joint of drill pipe to turn the drill stem as the rotary table turns.
Industry:Oil & gas
the procedure of pulling out and subsequently running back into the hole a string of drill pipe or tubing. Also called tripping.
Industry:Oil & gas
a device fitted to the rotary table through which the kelly passes and the means by which the torque of the rotary table is transmitted to the kelly and to the drill stem. Also called the drive bushing.
Industry:Oil & gas
an accessory attached to the top of the drill pipe or tubing to form a connection with the mud system to permit circulation of the drilling mud.
Industry:Oil & gas
a system of valves and piping that allows drilling fluid to be circulated without the use of the kelly.
Industry:Oil & gas
