دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to pull the drill stem out of the wellbore to change the bit, to change from a core barrel to the bit, to run electric logs, to prepare for a drill stem test, to run casing, and so on. Also called trip out.

n: See trip.

n: a hinged, cylindrical metal device placed around a joint of pipe as it is being broken out during a trip out of the hole. It keeps mud from splashing beyond the immediate area. Also called mother hubbard, mud saver, splash box, or wet box.

n: one of complementary tools that assist the pulling out the hole.

n: The full time from trip out to trip in for changing bit or logging .

trip out of hole.

trip out of the hole.

n: the small amount of additional mud weight carried over that needed to balance formation pressure to overcome the pressure-reduction effects caused by swabbing when a trip out of the hole is made.

any mud density over the amount needed to balance the formation with a static mud column. Related to overbalance.

v: to come out of the hole.

n: To remove the drillstring from the wellbore.


pull a string of tubing or drill pipe out of the hole.

n: a small mud tank with a capacity of 10 to 15 barrels (1,590 to 2,385 litres),usually with 1-barrel or � barrel (159-litre or 79.5-litre) divisions, used to ascertain the amount of mud necessary to keep the wellbore full with the exact amount of mud that is displaced by drill pipe. When the bit comes out of the hole, a volume of mud equal to that which the drill pipe occupied while in the hole must be pumped into the hole to replace the pipe. When the bit goes back in the hole, the drill pipe displaces a certain amount of mud, and a trip tank can be used again to keep track of this volume.

n: A kind of private small metal can with scale,which be used to complement drill fluid when trip out .

a smaller tank that holds the fluids form running or pulling a string of pipe. Because of its smaller volume, it is used to quickly spot incoming kicks or fluid losses.

n: The full time from trip out to trip in for changing bit or logging .

n: The drill string that drilling fluid come from it when trip out .