دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device placed on a piece of equipment that is lowered into a wellbore so that the equipment may be retrieved by wireline.

n: The surface on which a fishing tool engages (internally or externally) when retrieving tubing, tools, or equipment stuck or lost in a wellbore. Tools and equipment that are temporarily installed in a wellbore are generally equipped with a specific fishing

a piece of equipment on most downhole tools that is designed for simple, non-rotating attachment when retrieving.

n: a kind of wellbore drill with several holes on the annular wall ,able drill wellbores with different diameters

n: the ellipse wellbore whose minor axis is shorter than bit diameter during percussion drilling ,froming because the bit drills repeatly at the same position

n: the bit with cones on the bottom surface of the body ，used to drill wellbores with full diameter

n: The completion plan can‘t be made in advance during drilling multilayer exporation well ，the initiative plan could be made only according the latter drilling and well log information and then plan for completing the design of wellbore equipment accordin

n: The large-diameter metal pipe that connects the bell nipple under the rotary table to the possum belly at the mud tanks. The flowline is simply an inclined, gravity-flow conduit to direct mud coming out the top of the wellbore to the mud surface-treating

the flow connection from the wellhead to the separation facility, pipeline or storage unit.

pressure n: pressure at the bottom of the wellbore during normal oil production.

the distance outward from the wellbore to the leading edge of the lost fluids. Varies with the permeability of the zone.

n: the unwanted migration of the liquid part of the drilling mud or cement slurry into a formation, often minimised or prevented by the blending of additives with the mud or cement.

n: the transfer of the liquid part of the mud to the pores of the formation,loss of fluid (water plus soluble chemicals) from the mud to the formation can only occur when the permeability is sufficiently high,if the pores are large enough,the first effect is

the rate of loss of liquids to the formations from the fluid being circulated through the wellbore.

n: the area near the wellbore where invading mud filtrate forces out the movable formation fluids. Often abbreviated Rxo

part of the rock that has been flushed with a sweep fluid. The area may have little hydrocarbons remaining.