Comparing the Potential of Hydrocarbon Generation of Kazhdomi and Pabdeh Formations in Bangestan Anticline (Zagros Basin) According To Rock-Eval Pyrolysis Data

Abstract

In this study, the Hydrocarbon generation Potential of Kazhdomi and Pabdeh formation in Bangestan Anticline has been studied. In this regard, 10 samples were collected from Pabdeh formation, and 6 samples were collected from Kazhdomi formation that eventually was analyzed by Rock-Eval 6 system. In this system, a temperature raising program in oxygen-free environment was used. This device introduces a series of valuable factors related to Source rock, including: available free hydrocarbon in sample (Peak S 1 ), hydrocarbons emanated From thermal cracking of Kerogen (Peak S 2 ), heat index of organic matter (T max ), Total Organic Carbon (TOC), Hydrogen Index (HI), Oxygen Index (OI), and Production Index (PI). Applying these factors, there factors of evaluating source rock could be identified, which included amount, type and thermal maturity of organic material. Kerogen of Kazhdomi Formation was type II, and Kerogen of Pabdeh Formation was defined type II and III. Studied showed that Kazhdomi Formation compared with Pabdeh Formation had more oil-generation potential. Sedimentary Facies of Pabdeh Formation was defined C, CD, D and sedimentary Facies of Kazhdomi formation was defined AB, B, BC, and C. The amount of inter organic carbon of Pabdeh formation was estimated 0.9769 weight percent (WP), and this amount for Pabdeh formation was about 0.3957 weight percent (WP). Determination of hydrocarbon absorption by Rock matrix showed that absorption rate in samples of Kazhdomi formation was much more than samples of Pabdeh Formation, which indicates that Rock matrix in Kazhdomi formation involves much more clay mineral compared with Pabdeh formation.

Geochemical characteristics and depositional environments of the Narimba Formation source rock, Bass Basin, Australia

“…The interpretations of the biomarker data and its derivatives such as the pristane/phytane ratio, isoprenoid/nalkanes ratio, hopanes, terpanes, concentration of regular steranes (C 27 , C 28 and C 29 ) and carbon preference index (CPI) have been performed following the research done by Philp and Lewis (1987), Peters and Moldowan (1993), Peters and Cassa (1994) . 4 A cross-plot of S1 versus TOC indicating the origin of the hydrocarbon within the Narimba Formation (Fakhri et al 2013) maceral composition of the proportions of vitrinite, liptinite and inertinite has been provided by Government of Western Australia, Department of Mines, Industry Regulation and Safety.…”

Potential Evaluation and Basin Modeling of the Pabdeh Formation in Zagros Basin: A Case Study

“…Diagram S 1 vs. TOC used to assure that sample is not combined with hydrocarbon matters (due to transformation of oil towards upper units) and adverse effect on results of pyrolysis of Rock-Eval system [3]. Accordingly, available hy- Figure 3).…”

“…Pabdeh Formation is one of the most important source rocks in the Zagros basin [2]. This source rock is widely investigated in Dezful Embayment which all the researches indicated a poor to good source rock in the area [3]. In this study, which is based on both geochemical analyses and thermal history modeling, potential of Pabdeh Formation in Mish anticline and Gachsaran oil field is evaluated with regard to sedimentary Paleo environment during the Paleocene-Eocene ( Figure 1).…”

“…In addition to potential source rock and maturity, this study tried to give an answer for the ambiguity related to the origin of oil in Tertiary reservoirs of the studied fields. By contrast, limited papers are available on geochemical evaluations of this formation in Dezful embayment [3] [4] [5] [6] [7] and could be mentioned as examples.…”

Caracterização geoquímica com indícios paleoambientais de folhelhos da Formação Pimenteiras, estado do Tocantins, Bacia do Parnaíba, Brasil

“…Por conseguinte, as oscilações dos conteúdos de hidrogê-nio, oxigênio e COT para os dois afloramentos representam diferenças nas condições paleoambientais devidas às variações relativas do nível do mar ao longo da deposição da formação. Vários autores reportaram uma tendência similar no gráfico IH versus COT para sedimentos transgressivos e regressivos, como na Bacia San Juan, New Mexico (Pasley et al, 1991); na Formação Kazhdomi da Bacia de Zagros, Iran (Fakhri et al, 2013); e na Bacia Maamba Coalfield, Zambia (Robison e Engel, 1993).…”