ISSN: 2578-4846
Authors: Lazăr D, Halafawi M*, Avram L, Sorin R and Sorin G
Drilling specific energy (DSE) is an important factor for improving the drilling performance after reaching the maximum energy that is necessary to remove and destroy the rock volume underneath the bit. Therefore, field data are used to optimize and analyze the drilling performance by combining between hydraulic data and mechanical data to obtain the maximum DSE on different types of bits used to drill the Colibași stratigraphic column. These bits are tricone and PDC. Furthermore, Two sections (17 1/2" and 12 1/4") are optimized based on DSE equation and the 8 1/2" hole section was optimized based on simulation analysis done by Landmark software. Well 268 drilling data are used to perform this study and verify the results. It was found that DSE from various equations with different parameters has reach the same results. Also, DSE shows higher values for lower ROP and vise verse, and three different hole conditions' zones. Additionally, the simulation study showed another bit optimization through determining the variation of bit power, impact forces, and pressure losses with various pumping rates.
Keywords: DES; MSE; Performance; ROP; Drilling parameters; Insufficient hole conditions
