Optimization of drilling parameters in Raniganj Formation, Essar coal bed Methane Block – A case study

Coal bed methane is one of the proven and most accepted unconventional energy resources. Commercial viability of coal bed methane play depends on minimum investment during exploration as well as in development and production phases. To develop a coal bed methane field more number of wells is required. Therefore, during development phase one of the important aspects is to bring down the drilling time by optimizing rate of penetration and other related drilling parameters without compromising on wellbore stability. In this paper an effort has been made to understand the drilling parameters to achieve optimized ROP (Rate of Penetration), based on real time drilling data gathered from directional wells within Raniganj Formation in Essar Oil Limited Raniganj Coal bed Methane Block. In this paper data used are from three directional wells. Conclusions are based on relationship between different drilling parameters.