دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a method of rotary drilling that uses compressed air as the circulation medium. The conventional method of removing cuttings from the wellbore is to use a flow of water or drilling mud. Compressed air removes the cuttings with equal or greater efficiency. The rate of penetration is usually increased considerably when air drilling is used;however, a principal problem in air drilling is the penetration of formations containing water, since the entry of water into the system reduces the ability of the air to remove the cuttings.

n: A method of rotary drilling that uses compressed air as the circulating medium.

drilling with air instead of drilling mud (requires diverters at the surface to handle cuttings and formation fluids).

ball sealer.

a common diverter. It can sublime, or go directly from a solid to a gas.

n: A kind of brassboard method for controlling gas overflowing. When gas overflowing leading to underground blowout happens, an actuator will be threw into the drill column to open side opening of diverter valve.

n: a device used to direct fluids flowing from a well away from the drilling rig. When a kick is encountered at shallow depths, the well often cannot be shut in safely;therefore, a diverter is used to allow the well to flow through a side outlet (a divetter line).

n: refer to diverter

a material that forces acid to enter another zone by having a higher viscosity or building a filter cake.

a device in the flowpath at the wellhead that forces fluid to go down a pipe to a pit or tank.

n: A group devices used to control the up/down of all the components of diffluent preventer

n: a side outlet on a rig that directs flow away from the rig.

n: the pipelines used to conduct the jet flow out of the well site

n: the preventer installed in the diverter diffluent device of the well head