دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

Static condition of the length of tubing in the well, where buoyed tube weight (well fluid sensitive) equals the well pressure acting against the cross-sectional area of the tube. The balance point does not include any frictional forces exerted by frictio

n: A drilling method that make fluid column pressure in the well balance with formation pressure. It can improve ROP obviously, protect reservoir, and decrease or avert mud eroding and lossing.

n: The rarefication in the vacuum degasser when the volume of drilling fluid is balanced.

n: A kind of invert emulsion mud that the chemical potential of drilling fluid is equal to the chemical potential of water in the drilled formation. The salinit in the water phase is usually equal to salinit in the shale water. It can prevent shale permeatin

n: A designing method of cyclone separator. The bottom current of cyclone separator can expel solid particle when there is solid particle in the separated fluid. When there is no separated solid particle, it will expel the least liquid from bottom current.

n: A kind of cementing. Send the slurry into the well through drill pipe or pump of oil tube till the surface of the annular is equal to the surface in the pipe, then elevates drill pipe or oil tube and put the cement plug in the former place.