دسته بندی | مکانیک |
فرمت فایل | ppt |
حجم فایل | 3288 کیلو بایت |
تعداد صفحات فایل | 85 |
Wellbore Hydraulics
Axial Tension in Drill String
Example
A drill string consists of
10,000 ft of 19.5 #/ft drillpipe and
600 ft of 147 #/ft drill collars
suspended off bottom in 15#/gal mud
(Fb = bit weight = 0).
• What is the axial tension in the drillstring as a function of depth?