Publications

This study delves into the intricate aspects of Low Resistivity Pay (LRP), a geological anomaly prevalent in Indonesia's diverse sedimentary basins, which have increasingly become focal points in hydrocarbon production. Extensive analysis has been conducted over 40 case studies across key basins such as Central Sumatra, South Sumatra, Asri, Northwest Java, Northeast Java, Kutai, and West Natuna. These studies have uncovered the LRP occurrences in various depositional settings, including fluvial, deltaic, shallow marine environments, and occasionally extending to estuarine and deep marine settings. The study highlights several factors contributing to LRP, including the presence of clay, conductive minerals, and thin lamination. Clay minerals such as kaolinite, illite, smectite, and chlorite, along with non-clay conductive minerals like pyrite and siderite, contribute heavily to low-resistivity reading. These LRP occurrences will be classified using the FCT (Fusion Conduct Trisphere) Venn diagram in conjunction with the previous LRP factors. For example, LRP is attributed to clay and laminated shale in the Central Sumatra and Asri Basins. In the South Sumatra Basin, LRP is influenced by a combination of clay and conductive minerals. The Northwest Java and West Natuna Basins predominantly exhibit LRP due to the exclusive presence of clay minerals. In the Northeast Java Basin, the complexity arises from interbedded and laminated shale, while the Kutai Basin demonstrates a unique form of LRP caused by conductive minerals, notably pyrite and thin lamination. This research provides an in-depth exploration of the factors underlying LRP manifestation and lays the foundation for future clastic and carbonate hydrocarbon production optimization. Ultimately, this supports the achievement of 1 Million Barrels of Oil per Day (MBOPD) and 12 Billion Standard Cubic Feet per Day (BSCFD) production in Indonesia by 2030. The findings offer valuable insights for the oil and gas industry, guiding sustainable development and resource optimisation efforts in Indonesia's promising basins.