Impact of inversion tectonics on the spatial distribution of hydrocarbon traps in the NW Persian Gulf and the southern Dezful Embayment, SW Iran. (December 2021)

• Record Type: Journal Article
• Authors: Riahi, Zahra Tajmir; Sarkarinejad, Khalil; Faghih, Ali; Soleimany, Bahman; Payrovian, Gholam Reza
• Is Part Of: Marine and petroleum geology. Volume 134(2021)
• Publication Date: 2021-12
• Subjects: Inversion tectonics -- Hydrocarbon traps -- Oilfield -- Persian gulf -- Dezful embayment -- Iran; Submarine geology -- Periodicals; Petroleum -- Geology -- Periodicals; Géologie sous-marine -- Périodiques; Pétrole -- Géologie -- Périodiques; Petroleum -- Geology; Submarine geology; Periodicals; Electronic journals; 551.468
• DOI: 10.1016/j.marpetgeo.2021.105364
• Languages: English
• ISSNs: 0264-8172

Abstract

Abstract: Inversion tectonics has a major impact on distribution of fault-controlled hydrocarbon traps in the fold-and-thrust belts. In order to characterize the spatial distribution of several fault-controlled hydrocarbon traps adjacent to the Nourooz-Hendijan-Izeh Fault, this study describes the structural and tectono-sedimentary evolution of the fault based on the geological interpretation and tectono-sedimentary analysis of seven seismic sections in the Bahregansar, Hendijan, Tangu, and Rag-e-Sefid oilfields in the NW Persian Gulf and the southern Dezful Embayment. The results indicate that the Nourooz-Hendijan-Izeh Fault is a segmented pre-existing basement fault with steep dip, which reactivated to at least seven tectonic phases. Three-phase inversion tectonics along the Nourooz-Hendijan-Izeh Fault occurred at the Late Devonian-Carboniferous (positive inversion), Permian-Early Triassic (negative inversion), and Late Cenomanian-Early Turonian (positive inversion) boundaries and modified the evolutionary history of the sedimentary basin. Inversion affected hydrocarbon trap development at the Late Cretaceous and controlled their current conditions in the NW Persian Gulf and the southern Dezful Embayment along the northeastern margin of African-Arabian plates. Considering the hydrocarbon migration at the Late Miocene in these regions up to now, the N–S trending anticlines (Arabian trend) have a larger share of oil and gas in their hydrocarbon traps and lower hydrocarbon exploration risk than the NW-SE trending anticlines (Zagros trend). Mild to moderate inversion structures can be considered as preferred petroleum exploration targets. Highlights: Inversion tectonics can impact the distribution of fault-controlled hydrocarbon traps. The NHI Fault experienced at least seven tectonic events. The NHI Fault is an inverted basement fault striking NE-SW to N-S. Inversion tectonics effected the evolution of the Dezful Embayment.