Paleoenvironments and source rock potential of Dorado North well in the Mannar Basin (Indian Ocean)

Ratnayake, Amila Sandaruwan

doi:10.1007/s12517-021-07127-x

Arab J Geosci

2021

DOI: 10.1007/s12517-021-07127-x

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Paleoenvironments and source rock potential of Dorado North well in the Mannar Basin (Indian Ocean)

Amila Sandaruwan Ratnayake

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Cited by 3 publications

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“…The basement of the basin is made up of Precambrian high-grade metamorphic rocks (Cooray 1984, Ratnayake et al 2014, Kularathna et al 2020. The tectonostratigraphic evolution of the Mannar Basin can be split into three phases: pre-rift, rift, and post-rift (Ratnayake 2021b). The middle Jurassic to Early Cretaceous period is known as the early and late rift phases.…”

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confidence: 99%

Qualitative mineralogical analysis of Barracuda exploration well in the offshore Mannar Basin (the Indian Ocean) using FTIR and XRD techniques

Gunathilake,

Jaywardana,

Ratnayake

et al. 2022

Ruhuna J. Sci.

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The Mannar Basin plays a vital role in petroleum exploration in Sri Lanka, and its Barracuda exploration well was drilled up to 4206 m in depth. The objective of the current study is to identify mineralogy using Fourier-transform infrared (FTIR) and X-ray diffraction (XRD) analyses. The FTIR and XRD analyses confirm the presence of quartz, feldspar, clay minerals (e.g., kaolinite, montmorillonite), calcite, and hematite in all marlstone and mudstone samples. These sedimentary rocks can be identified as potential petroleum source rocks in the Mannar Basin. Quartz, carbonate, and hematite cementations are directly reduced porosity and permeability, and thus primary migration of hydrocarbons from potential source rocks. Clay minerals act as a seal for hydrocarbon migrations in the Mannar Basin. A variety of dominant clay mineral assemblages allows the reconstruction of several paleoclimatic chronozones in warm/wet and arid climates. In contrast, feldspar dissolution promotes the primary migration of hydrocarbon from potential petroleum source rocks. Consequently, this study concluded that common minerals such as quartz, carbonate, and hematite are associated with the trapping and binding processes of hydrocarbons.

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confidence: 99%

Qualitative mineralogical analysis of Barracuda exploration well in the offshore Mannar Basin (the Indian Ocean) using FTIR and XRD techniques

Gunathilake,

Jaywardana,

Ratnayake

et al. 2022

Ruhuna J. Sci.

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Gondwana sedimentary rocks of Andigama Basin, Sri Lanka: unraveling weathering dynamics, tectonic setting, and paleoclimate

Gunathilake,

Jayawardana,

Ratnayake

et al. 2024

Int J Earth Sci (Geol Rundsch)

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Assessment of hydrocarbon generative potential of Late Paleocene coals from East Khasi Hills, Meghalaya, North-East India

Kumar¹,

Singh

2022

Petroleum Science and Technology

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Paleoenvironments and source rock potential of Dorado North well in the Mannar Basin (Indian Ocean)

Cited by 3 publications

References 51 publications

Qualitative mineralogical analysis of Barracuda exploration well in the offshore Mannar Basin (the Indian Ocean) using FTIR and XRD techniques

Qualitative mineralogical analysis of Barracuda exploration well in the offshore Mannar Basin (the Indian Ocean) using FTIR and XRD techniques

Gondwana sedimentary rocks of Andigama Basin, Sri Lanka: unraveling weathering dynamics, tectonic setting, and paleoclimate

Assessment of hydrocarbon generative potential of Late Paleocene coals from East Khasi Hills, Meghalaya, North-East India

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