Abstract

• The study area is located in the Pauk and Myaing Townships, Pakokku District, Magway Region. The main objective of the present study is to characterize reservoir quality of Pondaung Formation in terms of diagenesis process by SEM and petrography analysis. The two oil and gas fields namely Letpanto and Kyaukkwet, the study area is situated on the northern part of the Salin basin which is a fore-arc sub-basin of the Central Myanmar Tertiary Basin. The stratigraphy of the area includes the formations from oldest to youngest: Pondaung, Yaw, Shwezetaw, Padaung, Kyaukkok and Irrawaddian formations. In diagenetic processes of the Pondaung Formation can be grouped into early diagenesis and late diagenesis. Petrographic and SEM examinations of the studied sandstones revealed both primary and secondary porosities.