سال انتشار: ۱۳۸۴
محل انتشار: چهارمین همایش ملی دانشجویی مهندسی نفت
تعداد صفحات: ۱۷
S.R Shadizadeh –
Javad Shariaty –
This work presents the findings to date of research project initiated to investigate drilled cuttings transport in deviated wellbores, The research program utilizes a simulated wellbore to study the mechanisms of cuttings transport in deviated wells. The cuttings transport column, has been designed to allow easy variation of well geometry in terms of drillstring size, deviation and pipe eccentricity. This study ha experimentally investigated the influence of range variables such as hole angle fluid rheology, cuttings size, drill pipe eccentricity, circulation rate, and annular size on cuttings transport efficiency. The use of high viscosity fluids appeared to improve the cuttings transport further especially at highly deviated angles. Smaller cuttings appeared to be easier to remove than larger ones. There is however a small exception to this when larger cuttings were found to be much easier to remove at low angles with the use of high viscosity fluids.