Evaluation of Ranikot Sandstone Formation, Punjab Platform Basin Pakistan

Shah, Syed Bilawal Ali; Ahmed, Adeeb

doi:10.1007/s12594-020-1449-5

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…Four samples from middle and top Ritqa, 4 samples from middle Raudhatain, 5 samples from bottom Burgan, and 4 samples from middle Minagish. These samples were treated by pyrolysis Rock-Eval 6 (RE6), using standard bulk rock method, which the sample is heated at 300℃ for 5 min., followed by the heating ramp of 300-650℃ at a rate of 25℃/minute (Peters, 1986;Shah & Ahmed, 2018;Shah & Ahmed, 2020). For kerogen elemental analyses and kerogen isolation examination, the samples were treated using standard acid maceration techniques using HCL and HF to calculate the amount of TOC contents, and the type of the organic matter as well as an environment of deposition,…”

Section: Methodsmentioning

confidence: 99%

Organic geochemical and petrographical characteristics of the major lower cretaceous petroleum source rock (Makhul Formation) in Kuwait - Arabian Gulf

Bahman¹

2021

KJS publishes peer-review articles in Mathematics, Computer Sci

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The Lower Cretaceous Makhul Formation is one of the major petroleum source rocks in Kuwait. This study aims to evaluate the Makhul source rock for its organic matter richness and its relation to the rock composition and depositional environment. A total of 117 core samples were collected from five wells in Raudhatain, Ritqa, Mutriba, Burgan, and Minagish oil fields north and south Kuwait. The rock petrographical studies were carried out using a transmitted and polarized microscope, as well as SEM and XRD analyses on selected samples. Total organic matter TOC and elemental analyses were done for kerogen type optically. The GC and GC-MS were done as well as the carbon isotope ratio. The results of this study show that at its earliest time the Makhul Formation was deposited in an anoxic shallow marine shelf environment. During deposition of the middle part, the water oxicity level was fluctuating from oxic to anoxic condition due to changes in sea level. At the end of Makhul and the start of the upper Minagish Formation, the sea level raised forming an oxic open marine ramp depositional condition. Organic geochemical results show that the average TOC of the Makhul Formation is 2.39% wt. High TOC values of 6.7% wt. were usually associated with the laminated mudstone intervals of the formation. The kerogen is of type II and is dominated by marine amorphous sapropelic organic matter with a mixture of zoo- and phytoplankton and rare terrestrial particles. Solvent extract results indicate non-waxy oils of Mesozoic origin that are associated with marine carbonate rocks. The formation is mature and at its peak oil generation in its deepest part in north Kuwait.

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Section: Methodsmentioning

confidence: 99%