source rock evaluation of kharita and bahariya formations in some wells, north western desert, egypt: visual palynofacies and organic geochemical approaches
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2018
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Abstract
Palynofacies analyses were applied on ninety-one samples from the subsurface Albian – Cenomanian succession represented by Kharita and Bahariya formations, encountered in El-Noor, and South Sallum wells, located in the North Western Desert, Egypt, to visually characterize the content of dispersed organic matter, as well as, organic geochemical characterization to reveal the depositional paleoenvironments and source rock potentiality. The result recognized of five palynofacies associations in the studied interval. The deposition of Kharita Formation took place mainly in a steady and a relatively stable deltaic to marginal environment continued as well in the lower part of Bahariya Formation with minor changes. The marine influence became more common in the upper part of Bahariya Formation showing the exceptional high hydrocarbon potential recorded in the studied interval. This indicates marine transgression by the end of the early Cenomanian (Upper Bahariya) age. Samples from the Kharita Formation contain abundant brown phytoclasts which suggest gas-prone kerogen type III and IV. While Bahariya Formation includes translucent, brown cuticles and woody tracheid phytoclasts pointing to more promising gas-prone kerogen type III. The organic geochemical analysis shows poor to fair gas-prone source rock potential within the study section., Thermally, the color of the spore grains in Kharita and Bahariya formations show that dark yellow to orange, indicates immature besides their general little poor hydrocarbon generation potentiality. Keywords: Palynofacies, Rock eval pyrolysis, Bahariya formation, Kharita formation, North Western Desert, Egypt
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| Authors | ;Nabil Aboul Ela;Sameh S. Tahoun;Tarek Fouad;Doaa A. Mousa;Rehab Saleh |
| Journal | 9th international conference on intelligent systems 2018: theory, research and innovation in applications, is 2018 - proceedings |
| Year | 2018 |
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