Evidence for a palaeo-oil column and alteration of residual oil in a gas-condensate field: Integrated oil inclusion and experimental results

Bourdet, Julien; Burruss, Robert C.; Chou, I.; Kempton, Richard; Liu, Keyu; Hung, Nguyen Viet

doi:10.1016/j.gca.2014.07.022

Cited by 62 publications

(34 citation statements)

References 48 publications

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“…UV microfluorescence spectroscopy can be used to better determine the composition and API gravity of the fluids, and to discriminate between separate populations of petroleum fluid inclusions, as it provides a more detailed evaluation of the fluorescence characteristics of petroleum fluids at a range of wavelengths [11,12,[44][45][46]. The fluorescence spectra for inclusion oils were measured with a CRAIC QDI 202Tm Microspectrophotometer (San Dimas, CA, USA), according to the methodology outlined by [46].…”

Section: Sampling and Methodologymentioning

confidence: 99%

“…Progressively deformed autochthonous and mostly sedimentary strata ( Figure 2) generally represent relatively shallow, Fluid inclusions represent micro-scale samples of fluids, trapped during the evolution of sedimentary basins, and can be used to identify the composition of fluids associated with diagenetic and post-diagenetic fluid processes [5]. In petroleum systems, fluid inclusion data have been widely used to define hydrocarbon migration and charge histories, especially where there is a complex petroleum charge history (e.g., [6][7][8][9][10][11][12]). …”

Section: Geological Settingmentioning

confidence: 99%

“…Previous studies have shown that the API gravity of petroleum fluids can be related to their fluorescence spectra [12,[44][45][46]. Reports by Stasiuk and Snowden [44] and Gillespie et al [46] correlated the intensity of fluorescence at 650 and 500 nm (Q R/G ) to known API values, and the equation of Gillespie et al [46] was used here to calculate the API of petroleum fluids in Type 4a and Type 4b inclusions.…”

Section: Ultraviolet Fluorescence Microspectroscopymentioning

confidence: 99%

“…Reports by Stasiuk and Snowden [44] and Gillespie et al [46] correlated the intensity of fluorescence at 650 and 500 nm (Q R/G ) to known API values, and the equation of Gillespie et al [46] was used here to calculate the API of petroleum fluids in Type 4a and Type 4b inclusions. However, Bourdet et al [12] showed that these equations were not suitable for very light oils or condensates, as the intensity of fluorescence at 650 nm is weak. Therefore the API of petroleum fluids in Type 4c and Type 6 inclusions was calculated using the equation of Bourdet et al [12], based on correlations between the intensity of fluorescence at 510 and 430 nm (Q G/B ) to API.…”

Section: Ultraviolet Fluorescence Microspectroscopymentioning

confidence: 99%

“…However, Bourdet et al [12] showed that these equations were not suitable for very light oils or condensates, as the intensity of fluorescence at 650 nm is weak. Therefore the API of petroleum fluids in Type 4c and Type 6 inclusions was calculated using the equation of Bourdet et al [12], based on correlations between the intensity of fluorescence at 510 and 430 nm (Q G/B ) to API. The results of these calculations are shown in Table 4, and record a progressive increase in API from Type 4a inclusion (~35 to 39), Type 4b inclusions (~39 to 42), Type 4c inclusions (~44 to 52) to Type 6 inclusions (~52 to 55).…”

Section: Ultraviolet Fluorescence Microspectroscopymentioning

confidence: 99%

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The Use of Integrated Fluid Inclusion Studies for Constraining Petroleum Charge History at Parsons Pond, Western Newfoundland, Canada

2017

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This study, based on fluid inclusion petrography, microthermometry and ultraviolet microspectroscopy of inclusion oil, investigates the petroleum charge history at Parsons Pond, western Newfoundland. To address this matter, drill core and cuttings samples of allochthonous and autochthonous strata in the Parson's Pond area were collected from three exploration wells. Fluid inclusions were examined from fragments of calcite and quartz veins, diagenetic cements in sandstone, and in large hydrothermal dolomite and calcite crystals. Primary aqueous inclusions in authigenic sandstone cements indicate that cementation occurred at relatively shallow depths and low temperatures (<50 • C). Hydrocarbon-bearing fluid inclusions (petroleum, wet gas and gas) are generally restricted to calcite and quartz veins, indicating that petroleum and gas migration at Parson's Pond is fracture-controlled. No hydrocarbons were observed in the diagenetic cements of the essentially tight sandstones. Fluid inclusion microthermometry and ultraviolet microspectroscopy indicate the presence of multiple generations of hydrocarbon fluid, ranging in composition from 33 API gravity petroleum to pure CH 4 . Petrographic evidence suggests that hydrocarbons were generated multiple times during progressive burial and heating. In addition, the distribution of hydrocarbon bearing inclusions with depth suggests that deeper levels are gas-prone, with petroleum confined to relatively shallow depths. Although only gas flow was encountered during the drilling of exploration wells at Parson's Pond, the presence of petroleum-bearing fluid inclusions in calcite and quartz veins indicates that the historical production from shallow wells in the Parsons Pond area likely tapped small reservoirs of fractured petroliferous strata.

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Section: Sampling and Methodologymentioning

confidence: 99%