Petrophysical Analysis Of Sawan-01 And Sawan-02, Lower Indus Basin, Pakistan

Abstract

In the current study, the main goal was to identify reservoir zones and to delineate their hydrocarbon potential for Sawan-01 and Sawan-02 wells. Sawan-01 and Sawan-02 wells are located at 68 54’25.17” E, 26 59’30.58” N and 68 56’1.70” E, 27 1’22.70” N respectively, in the Khairpur District of Sindh. Geologically, the research area is located in the extensional regime of Lower Indus Basin, in the southeastern part of the Jacobabad and Khairpur highs, together known as Sukkur rift system. It has Sukkur Rift, Thar Platform, Kithar Foredeep and Indian Shield to the north, south, east and west, respectively. With previous consent from the Directorate General of Petroleum Concession (DGPC), the well logs of Sawan-01 and Sawan-02 wells were acquired from Landmark Resources (LMKR). Petrophysical evaluation of well Sawan-01 and Sawan-02 was carried out to highlight the reservoir area which included the selection of zone of interest followed by Log interpretation. The zones of interest in our study were marked in Lower Goru Formation in both wells. The petrophysical interpretation showed that there is 56%, 62% 28% and 52% Vsh, 55%, 74%, 59% and 52% Sw and 45%, 26%, 41% and 48% saturation of hydrocarbons in Zones 1, 2, 3 and 4 respectively of Sawan- 01. Three zones of interest were marked in Sawan-02 that showed 40%, 72% and 67% Vsh, 54%, 68% and 53% Sw and 46%, 32% and 47% saturation of hydrocarbons in Zones 1, 2 and 3 respectively. The lithological cross plots indicate that the lithology of our zones of interest in Lower Goru Formation is dominated by sandstone.