An inversion structure and its implication for structural trapping mechanism: Study of Kakap PSC West Natuna basin, Indonesia

The West Natuna basin has been formed since the Early Cenozoic. The basin has had a complex structural history beginning with Eocene-Oligocene transtension followed by Miocene to present day transpression and inversion.; Various structural elements are present throughout Kakap PSC. NW-SE and NE-SW orientated half-graben are the major structural orientations along with series of smaller half-graben. Those structural features are associated with Sunda fold types and flower structures.; The tectonostratigraphy of Kakap PSC can be divided into four major tectonic events; syn-rift event, transitional event, inversion event, and post-inversion event.