دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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 operation of hoisting the drill stem out of and returning it to the wellbore. See make a trip.

using a single slot on a platform to house two wellbores, with independent controls, that are drilled to different parts of the reservoir.

n: The drilling that the amount of pressure (or force per unit area) exerted on a formation exposed in a wellbore below the internal fluid pressure of that formation.Its advantage is have quick rate of drilling,and finding oil and gas formation readily,but h

n: The amount of pressure (or force per unit area) exerted on a formation exposed in a wellbore below the internal fluid pressure of that formation. If sufficient porosity and permeability exist, formation fluids enter the wellbore. The drilling rate typical

when the pressure exerted by the column of fluid in the wellbore is less than the pore pressure in the formation.

drilling with a pressure in the wellbore that is lower than the pressure in the formation.

adj: of or relating to a condition in which pressure in the wellbore is less than the pressure in the fonnation.

perforating the well when the pressure in the wellbore is less than the pressure in the formation.

any part of a wellbore drilled with a worn bit.

n: an uncontrolled flow of gas, salt water, or other fluid out of the wellbore and into another formation that the wellbore has penetrated.

n: The phnomenon of high pressure layer fluid flowing in another uncovered breakup layer at downhole.

an uncontrolled and unintentional flow of fluids from one formation to another, generally when one or more well barriers have been breached.