The regional seismic section of the off-shore Selabangka area shows that the presence of Tertiary sediments is thin and dwindling to the southeast. This shows that the area that can still be hoped for is the northern part of the Selabangka Offshore area.

Petroleum systems that may develop in Selabangka Offshore by taking the continuity of the tectonic conditions of the Matindok Block, it is found that the possibility of the type of play that develops in Selabangka Offshore is relatively the same. One type of play that may develop is Miocene Carbonates on Wrench-Related Structure formed by the Matindok Formation as a source rock, with a target of Miocene carbonate rock reservoirs. These rifts develop from the northern area of the Matindok Block and are found all the way to Selabangka Offshore. This type of play on seismic sections and depth maps is identified in several areas indicated by the presence of closures. Source rock in the Selabangka Offshore area probably comes from two sources, Tertiary rocks or Mesozoic sedimentary rocks. For Tertiary rocks, it is believed that the only possibility of producing hydrocarbons for this Tertiary system is shale from the Matindok Formation. The Matindok Formation develops in a limited distribution. Correlation results of the wells in the Matindok Block (North of Selabangka Offshore) indicate that the presence of source rock from the Matindok Formation may not be continuous or thinning to the south. This means that it is unlikely that the source rock developing in this area will come from the Matindok Formation. As for the Mesozoic rocks themselves in the seismic section it is difficult to be mapped, especially because there are no wells that have penetrated the Mesozoic clastic rocks around the study area. On the seismic section below the Tertiary sedimentary rock shows a chaotic appearance that is typical of a basement. Several identified leads are shown on the depth structure map and seismic sections. This lead was formed by a play similar to the Matindok Block in north Selabangka Offshore in the form of Miocene Carbonates on Wrench-Related Structure (BPKKA Pertamina, 1996). However, because the volumetric value of the identified leads is very small (even for P90), the calculation for speculative resources is not continued.