ANALISIS NILAI LOG GAMMA RAY DAN LOG DENSITY TERHADAPVARIASI KECEPATAN PEREKAMAN METODE WELL LOGGING “ROBERTSON GEOLOGGING (RG)”. geo. sci. kut. bas. [Internet]. 2019 Feb. 28 [cited 2025 Sep. 23];2(1). Available from: https://jurnal.fmipa.unmul.ac.id/index.php/geofis/article/view/400