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).

n: a surface separation method used to dispart the bergmeal producing in air drilling to prevent the bergeal dengering peoples health and age of the equipment

n: the dust cuttings which flow out with fluid in air drilling and wash boring

n: a drilling technique that uses air or gas to which a foaming agent has been added.

n: A variation of air drilling in which a small amount of water trickles into the wellbore from exposed formations and is carried out of the wellbore by the compressed air used for air drilling. The onset of mist drilling often signals the impending end of p

n: salt of stearic acid that is a saturated, 18-carbon fatty acid. Certain compounds, such as aluminum stearate, calcium stearate, and zinc stearate, are used in drilling fluids as defoamers or lubricants. Stearates can also be used as surfactants in air drilling to prevent small quantities of water from creating mud that could clog the hole.