Petroleum geochemistry of the Potwar Basin, Pakistan: 1. Oil–oil correlation using biomarkers, δ13C and δD

Asif, Muhammad; Fazeelat, Tahira; Grice, Kliti

doi:10.1016/j.orggeochem.2011.08.003

Cited by 46 publications

(35 citation statements)

References 42 publications

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“…There are multiple reservoir targets, including Cambrian, Jurassic and Eocene formations, with fluids ranging from 16°to 49°API gravity. Organic-rich potential source rocks include Precambrian evaporite/carbonate/clastic facies and Permian shale and carbonate units (Asif et al 2011).…”

Section: Asia and Australasiamentioning

confidence: 99%

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Carbon and hydrogen isotopic compositions of n -alkanes as a tool in petroleum exploration

Pedentchouk

Turich

2017

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Compound-specific isotope analysis (CSIA) of individual organic compounds is a powerful but underutilized tool in petroleum exploration. When integrated with other organic geochemical methodologies it can provide evidence of fluid histories including source, maturity, charge history and reservoir processes that can support field development planning and exploration efforts. The purpose of this chapter is to provide a review of the methodologies used for generating carbon and hydrogen isotope data for mid-and high-molecular-weight n-alkanes.We discuss the factors that control stable carbon and hydrogen isotope compositions of n-alkanes and related compounds in sedimentary and petroleum systems and review current and future applications of this methodology for petroleum exploration. We discuss basin-specific case studies that demonstrate the usefulness of CSIA either when addressing particular aspects of petroleum exploration (e.g. charge evaluation, source rock-oil correlation, and investigation of maturity and in-reservoir processes) or when this technique is used to corroborate interpretations from integrated petroleum systems analysis, providing unique insights which may not be revealed when using other methods. CSIA of n-alkanes and related n-alkyl structures can provide independent data to strengthen petroleum systems concepts from generation and expulsion of fluids from source rock, to charge history, connectivity, and in-reservoir processes.Gold Open Access: This article is published under the terms of the CC-BY 3.0 license.Petroleum geoscientists use organic geochemistry as an essential tool in oil and gas exploration and field development planning. Relatively low-cost, high-throughput bulk data are commonly used to screen for source rock quality (e.g. per cent total organic carbon (%TOC), hydrogen and oxygen indices) and thermal maturity (Tmax, vitrinite reflectance equivalent). More in-depth geochemical analytical techniques are used in the context of full fluid and reservoir properties to correlate source rocks and reservoir oils, to determine fluid generation and migration history, including presentday reservoir connectivity, and to understand in-reservoir processes, such as biodegradation of in-reservoir oils. These tools are especially powerful when coupled with other measurements made during the exploration and development process, such as compositional analysis during drilling, downhole fluid analysis and other wireline measurements, and pressure, volume, temperature (PVT) and chemical analyses, integrated in the context of geological static and reservoir dynamic models.Molecular biomarkers have been employed in petroleum exploration for several decades (Peters et al. 2005). The usefulness of bulk stable isotope measurements of gases and oils was well demonstrated in the petroleum industry through the decades of the 1970s and 1980s (Stahl 1977;Schoell 1984;Sofer 1984). However, the use of compound-specific isotopic composition of light hydrocarbons, alkanes and biomarkers is less common....

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Section: Asia and Australasiamentioning

confidence: 99%

“…On the basis of OM source, Asif et al (2011) indentified three distinct oil groups: a terrigenousorigin oil family, and two marine oil families, differentiated by suboxic and oxic depositional conditions.…”

Section: Asia and Australasiamentioning

confidence: 99%

Carbon and hydrogen isotopic compositions of n -alkanes as a tool in petroleum exploration

Pedentchouk

Turich

2017

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“…GC-MS analysis of saturated, aromatic and branched/cyclic hydrocarbons fractions was performed using procedure and instrumental conditions given elsewhere (Asif et al, 2009(Asif et al, , 2011. Briefly, HewlettPackard (HP) 6890 GC having split/splitless injector interfaced with HP5973 mass-selective detector (MSD) was used.…”

Section: Gas Chromatograph-mass Spectrometry (Gc-ms) and Metastable Rmentioning

confidence: 99%

“…Conversely, geochemical characterization and classification of the Potwar Basin petroleum has been extensively carried out using biomarkers, stable isotopes and aromatic hydrocarbons (Asif et al, 2011;Asif and Fazeelat, 2012). It has been shown that Potwar Basin contains marine, terrigenous and mix source crude oils.…”

Section: Introductionmentioning

confidence: 99%

Biomarker and stable carbon isotopic study of Eocene sediments of North-Western Potwar Basin, Pakistan

Asif

Fazeelat

Jalees

2014

Journal of Petroleum Science and Engineering

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“…In order to overcome these deficiencies, some labor-intensive and time-consuming sample preparation steps have to be used before GC analysis. The routine method is column chromatography on silica gel and alumina, by which crude oils are separated into different fractions such as saturated hydrocarbon fraction, aromatic fraction, and polar fraction [ 7 ]. The separated fractions are further concentrated and then injected to GC for analysis.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Multiwalled Carbon Nanotubes/Hydroxyl-Terminated Silicone Oil Fiber and Its Application to Analysis of Crude Oils

Zhu

Tong

Zhang³

et al. 2014

The Scientific World Journal

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A simple and efficient method to analyze the volatile and semivolatile organic compounds in crude oils has been developed based on direct immersion solid-phase microextraction coupled to comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (DI-SPME-GC × GC/TOFMS). A novel fiber, multiwalled carbon nanotubes/hydroxyl-terminated silicone oil (MWNTs-TSO-OH), was prepared by sol-gel technology. Using standard solutions, the extraction conditions were optimized such as extraction mode, extraction temperature, extraction time, and salts effect. With the optimized conditions, a real crude oil sample was extracted and then analyzed in detail. It shows that the proposed method is very effective in simultaneously analyzing the normal and branched alkanes, cycloalkanes, aromatic hydrocarbons, and biomarkers of crude oil such as steranes and terpanes. Furthermore, the method showed good linearity (r > 0.999), precision (RSD < 8%), and detection limits ranging from 0.2 to 1.6 ng/L.

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Petroleum geochemistry of the Potwar Basin, Pakistan: 1. Oil–oil correlation using biomarkers, δ13C and δD

Cited by 46 publications

References 42 publications

Carbon and hydrogen isotopic compositions of n -alkanes as a tool in petroleum exploration

Carbon and hydrogen isotopic compositions of n -alkanes as a tool in petroleum exploration

Biomarker and stable carbon isotopic study of Eocene sediments of North-Western Potwar Basin, Pakistan

Preparation of Multiwalled Carbon Nanotubes/Hydroxyl-Terminated Silicone Oil Fiber and Its Application to Analysis of Crude Oils

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