Mixed signals of the source and thermal maturity for petroleum accumulations from light hydrocarbons: an example of the Beryl field

Chung, Hyen-Mi; Walters, Clifford C.; Buck, Steven P.; Bingham, Gail E.

doi:10.1016/s0146-6380(98)00063-1

Cited by 78 publications

(27 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The C 7 LMWHs parameters based on the scheme proposed by Mango(1987) are commonly used to determine the classification and origin of oil and gas (Ten Haven, 1996;Chung et al, 1998;Obermajer et al, 2000). Mango(1987;1990;1997) suggested that four different isomers of heptane [2-methylhexane (2-MH), 3-methylhexane (3MH), 2,3-dimethylpentane (2,3DMP) and 2,4-dimethylpentane (2,4-DMP)] had fixed roles in different petroleum system.…”

Section: Mango Parameter K1mentioning

confidence: 99%

Characterization of Low Molecular Weight Hydrocarbons in Jingbian Gas Field and its Application to Gas Sources Identification

Zhang

2011

Energy Exploration & Exploitation

View full text Add to dashboard Cite

Chemical and isotopic compositions of C 6 -C 7 low molecular weight hydrocarbons (LMWHs) were used to determine the origin of gas in the Ordovician weathered crust (O1m5) reservoir of Jingbian gas field in Ordos Basin, China. GC quantification of LMWHs for 55 gas samples [20 of them from the Xiashihezi Formation (P1x) and Shanxi Formation (P1s) reservoirs, and the rest from the O1m5 reservoir] were conducted. The compound specific stable carbon isotopes of LMWHs for 24 gas samples (five gas samples from the P1s reservoir) were analyzed with GC-C-IRMS. The results show that cycloalkanes are abundant components and their concentrations range from 23.8-52.5% with an average of 41.1% among LMWHs. Methylcyclohexane (MCH) is the most abundant one among normal heptane (n-C 7 ), MCH and dimethylcyclopentane (DMCP), ranging from 50.1-81.4% with an average value of 71.6%. A 13 C enrichment for nine compounds of C 6 -C 7 fraction was observed, and the δ 13 C values range from −25.4-16.3%. Based on the correlation of the Mango parameters (K1 and K2), the relationship of n-C 7 , MCH and DMCP and compound specific carbon isotope of C 6 -C 7 compounds, the gas in the O1m5 reservoir shares the same origin with that in the P1x, P1s reservoirs, the natural gas in Ordovician weathered crust reservoir and Permian sandstone reservoir sourced from coal measures in Carboniferous and Permian.

show abstract

Section: Mango Parameter K1mentioning

confidence: 99%

Characterization of Low Molecular Weight Hydrocarbons in Jingbian Gas Field and its Application to Gas Sources Identification

Zhang

2011

Energy Exploration & Exploitation

View full text Add to dashboard Cite

show abstract

“…Various parameters based on the chemical and isotopic compositions of these LMWHs have been widely utilized to make oil/source correlations (Bjorøy et al 1994;Ten Haven 1996;Odden et al 1998;Whiticar and Snowdon 1999;Obermajer et al 2000;Wever 2000), assess the thermal maturity of oils and condensates (Thompson 1983;Mango 2000), determine the source allocation of mixed oils (Chung et al 1998;Rooney et al 1998), and identify various secondary alterations of crude oils (George et al 2002;Pasadakis et al 2004;Zhang et al 2005). The characterization of these light compounds is also a powerful tool for tracing the source of petroleum-related contaminants and understanding the environmental processes that control the transport and fate of these contaminants (Dempster et al 1997;Kelley et al 1997;Gray et al 2002;Kolhatkar et al 2002;Mancini et al 2002Mancini et al , 2008Smallwood et al 2002;Zwank et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Strict collection and preservation procedures are required to avoid the evaporation of a crude oil sample to facilitate the accurate determination of its LMWHs distribution, because even minor evaporation would affect the quality of the data (Cañipa-Morales et al 2003). Although compound-specific isotope analysis (CSIA) has become a powerful tool for oil characterization and correlation (Chung et al 1998;Odden et al 1998;Harris et al 1999;Whiticar and Snowdon 1999), few studies have considered the effect of evaporation on the d 13 C values of LMWHs (Harrington et al 1999;Shin and Lee 2010).…”

Section: Introductionmentioning

confidence: 99%

Carbon isotopic fractionation during vaporization of low molecular weight hydrocarbons (C6–C12)

et al. 2017

View full text Add to dashboard Cite

Three series of laboratory vaporization experiments were conducted to investigate the carbon isotope fractionation of low molecular weight hydrocarbons (LMWHs) during their progressive vaporization. In addition to the analysis of a synthetic oil mixture, individual compounds were also studied either as pure single phases or mixed with soil. This allowed influences of mixing effects and diffusion though soil on the fractionation to be elucidated. The LMWHs volatilized in two broad behavior patterns that depended on their molecular weight and boiling point. Vaporization significantly enriched the 13 C present in the remaining components of the C 6 -C 9 fraction, indicating that the vaporization is mainly kinetically controlled; the observed variations could be described with a Rayleigh fractionation model. In contrast, the heavier compounds (n-C 10 -n-C 12 ) showed less mass loss and almost no significant isotopic fractionation during vaporization, indicating that the isotope characteristics remained sufficiently constant for these hydrocarbons to be used to identify the source of an oil sample, e.g., the specific oil field or the origin of a spill. Furthermore, comparative studies suggested that matrix effects should be considered when the carbon isotope ratios of hydrocarbons are applied in the field.

show abstract

“…Molecular and stable carbon isotopic compositions of individual light hydrocarbons (LHs) in crude oil are believed to be a powerful tool in correlating oils, determining the thermal maturity of source rock and deciphering petroleum migration, accumulation and secondary alteration in the reservoir within sedimentary basins (Philippi, 1975;Mango, 1987Mango, , 1997Thompson, 1987Thompson, , 1988Clayton and Bjorøy, 1994;Rooney, 1995;Ten Haven, 1996;Chung et al, 1998;Rooney et al, 1998;Whiticar and Snowdon, 1999;Sun et al, 2007;Xiao et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Stable carbon isotope fractionation of individual light hydrocarbons in the C6–C8 range in crude oil as induced by natural evaporation: Experimental results and geological implications

Xiao

Sun

Zhang

et al. 2012

Organic Geochemistry

View full text Add to dashboard Cite

Mixed signals of the source and thermal maturity for petroleum accumulations from light hydrocarbons: an example of the Beryl field

Cited by 78 publications

References 17 publications

Characterization of Low Molecular Weight Hydrocarbons in Jingbian Gas Field and its Application to Gas Sources Identification

Characterization of Low Molecular Weight Hydrocarbons in Jingbian Gas Field and its Application to Gas Sources Identification

Carbon isotopic fractionation during vaporization of low molecular weight hydrocarbons (C6–C12)

Stable carbon isotope fractionation of individual light hydrocarbons in the C6–C8 range in crude oil as induced by natural evaporation: Experimental results and geological implications

Contact Info

Product

Resources

About