Source Rock Evaluation of Nammal Formation, Jand Area, Attock District, Pakistan (P-0981) (MFN 5785)

Abstract

The present study is investigated to evaluate the source rock potential of Nammal Formation that is encountered in Dakhni southwest-01. The study well is located in Jand area, Attock district. Tectonically, the well is located in Potwar sub-basin near Dakhni anticline. The tectonic regime of the area is highly stressed and contains faults, anticlines and various structures. To achieve the objectives of this research, the methodology adopted is to carry out various analyses on the rock cuttings of Nammal Formation. The organic richness was determined using Leco CS-300 and maturity data was achieved by using ROCK EVAL-6 instruments. The TOC values range between 1.73-3.73% indicating good to very good quality. The values of S1 range between 0.15-1.59 mg HC/g rock and values of S2 lie in the range between 0.72-3.87 mg HC/g rock indicating poor to good and poor to fair quality respectively. Van Krevlen diagram and S2 vs. TOC plots elucidate that the Nammal Formation contains type III kerogen and has the potential to produce gas only. Basin modeling of Nammal Formation is carried out to reconstruct the burial history and maturation history. The model indicates that Nammal Formation is deposited ~54 million years ago and entered the gas generation phase ~4 million years ago. The geochemical log also authenticates that Nammal Formation is mainly gas prone and has the potential to produce gas.