kelly bushing造句

• The "'kelly "'is the polygonal tubing and the " kelly bushing " is the mechanical device that turns the kelly when rotated by the rotary table.
• There was a popular song for the famous baseball player at that time called, 3 Slide Kelly, Slide ! 3 3 Sliding3 is the act of a kelly passing through the kelly bushing as it drills.
• The kelly typically is about 10 ft ( 3 m ) longer than the drill pipe segments, thus leaving a portion of newly drilled hole open below the bit after a new length of pipe has been added ( " making a connection " ) and the drill string has been lowered until the kelly bushing engages again in the rotary table.
• According to the 3 Dictionary of Petroleum Exploration, Drilling and Production3, 3 [ The ] kelly was named after Michael J . ( King ) Kelly, a Chicago baseball player ( 1880-1887 ) who was known for his base running and long slides . 3 As steel was not as good a quality back then as it was today, the kelly was always hanging up in the kelly bushing.
• Because wells are not always drilled vertically, there may be two " depths " for every given point in a wellbore : the "'measured depth ( MD ) "'measured along the path of the borehole, and the "'true vertical depth ( TVD ) "', the absolute vertical distance between the DF ), rotary table ( RT ), kelly bushing ( KB ) and mean sea level ( MSL ).