دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A small pit, typically located immediately after the shaker screens, which is used as a settling pit to separate coarser solids that accidentally bypass the shakers. Mud enters the pit at one side and exits via an overflow at the other. Sand traps are dum

a joint above a piece of equipment that is designed to fail and allow recovery of the upper string.

shear stress over angle of deformation.

n: viscosity reduction of non- Newtonian fluids (e.g., polymers, most slurries and suspensions, and lube oils with viscosity-index improvers) under conditions of shear stress.

n: The effect that the viscosity of some non-Newtonian fluid will decrease at the shear pressure .



a fluid that when sheared, reduces viscosity.

(pronounced shiv") n: I. a grooved pulley. 2. support wheel over which tape, wire, or cable rides.

n: A pulley. In oilfield usage, the term usually refers to either the pulleys permanently mounted on the top of the rig (the crown blocks),or the pulleys used for running wireline tools into the wellbore. In the case of the crown blocks, the drilling line,

a grooved pulley.

separating a pipe string with a explosive cutter.

n: a full-sized ell or tee upstream and downstream of a meter. short full-pitch crossover n: angled grooves on a drum.

n: a weather forecast covering 48 hours or less.

n: 1. a charge of high explosive, usually nitroglycerine, detonated in a well to shatter the formation and expedite the recovery of oil. Shooting has been almost completely replaced by formation fracturing and acid treatments. 2. a point at which a photograph is made in a single-shot survey. See directional survey.

v: I. to close the valves on a well so that it stops producing. 2. to close in a well in which a kick has occurred.

v: 1. shutting off the bloeout preventer when overflow. 2. shutting off the valve of the production well to stop running.