Welcome to International Journal of Emerging Technologies in Engineering Research (IJETER)

Volume 9, Issue 10, October (2021)

S.No	Title & Authors	Full Text
1	Computational Tool for Surface Back Pressure Prediction in Constant Bottom Hole Pressure Variant of Managed Pressure Drilling John Lander Ichenwo, Emenike Nyeche Wami, Nmegbu C.G.J, Fidelis Wopara Abstract - Managed Pressure Drilling (MPD) as a drilling method is the outcome of high cost of Non Productive Time (NPT) caused by the closeness of formation pore pressure and fracture pressure which is regular in deep off shore, off shore, high pressure and high temperature and depleted reservoirs as well as some onshore drilling operation. The study was performed with a goal to develop a high prediction precision surface backpressure computation tool amenable to CBHP MPD field practice, used for computation and simulation of down-hole pressures during static and dynamic down-hole conditions. The developed software works on the principle of a generated multiple linear regression annular friction loss (AFL) correlation developed on the basis of surface response methodology (SRM) with AFL as the response variable, the predictor variables were well depth, flow rate, mud weight and hydraulic diameter. The designed software program was used to estimate the back pressure requirement at every given depth for the fields under consideration to test its level of accuracy and robustness. The economic effect of the study was also analysed in view of reduction of the production cost involved in NPT during drilling operations in the field under consideration.	Download