Optimization of Drilling of Volcanics Section in an Oil/gas Well.

Abstract

The efficiency of the well drilling procedure is influenced by the drill bit, its characteristics, its hydraulics, and the downhole tools. During the well drilling at AMOSING 2, Block 10BB, the parameters selected in this study, including the combination of downhole drilling tools, were optimized for maximum performance. The drilling data from the offset wells were analyzed and optimized for the subject well's drilling. The project report introduces the history of oil and gas drilling, documenting prehistoric drilling from the 1st century BC in China. The report highlights the evolution of modern-day drilling through Cable-tool drilling and the more popular Rotary drilling which is the focus of this study. The report introduces the Oil and gas sectors, through the definition of upstream, midstream and downstream energy sectors. The report also illustrates the typical oil-well, the stages in delivering a well, oil-well drilling procedures and the drilling consumables that led to the inspiration and justification for the study carried out. The methodology followed is exhaustively presented and the tools and equipment used in the study are fully explained. The criteria used to determine the efficiency of drilling bits, downhole drilling tools, and operational parameters was the change in the “rate of penetration” (R.O.P) Optimization resulted in improved drilling speeds/rate of penetration, better drill bit dull grading and better well profile. Improvement in energy consumption was realized in reduction of the quantity of No. 2 diesel fuel by 24,786.53 liters. The study concluded that there is high value in the process of maximizing the efficiency of the drilling tools, drilling parameters and drilling practice. And recommended that during the process of drilling a well, collection/capturing of all pertinent data should be carried out simultaneously at each stage and data analyzed to establish parameters to optimize in consequent stages