GHaffari Rad, Afsaneh, Sajjad Negahban, Behzad Tokhmechi, and Hossein Mostafavi. 2021. “Drilling Bit Selection in a Formation With Different Sedimentary Facies Using the Markov Chain: A Case Study at One of the Oil Fields in the South of Iran”. Rudarsko-geološko-Naftni Zbornik 36 (2):83-92. https://doi.org/10.17794/rgn.2021.2.8.