Gas washing of oil along a regional transect, offshore Louisiana

Losh, Steven; Cathles, L. M.; Meulbroek, Peter

doi:10.1016/s0146-6380(02)00025-6

Cited by 96 publications

(63 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The above equation had been improved and applied in the quantitative assessment of phase fractionations in oil reservoir [1,8] . Meulbroek [14] studied phase action of oil when methane flows through oil with the FlowTube model.…”

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

“…However the high carbon number fractions were not influenced by gas washing, and exponentially distributed with a slope factor similar to that of the un-altered oil. Therefore, Meulbroek et al [1] and Losh et al [8] studied gas washing fractionation in oil reservoirs through parameters such as slope factor and break carbon number, and so on. Moreover, Losh et al calculated n-alkanes mass depletion caused by gas washing using the following function Q = 1−[ΣWn (reality oil)/ΣWn (reconstructed oil)] [8] ,…”

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

“…However, if different oils were mixed, the n-alkanes concentrations would deviate from an exponential distribution. The results of mixing experiment showed that The method on computing the n-alkanes mass depletion from fractionated oil [8] .…”

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

“…Thus the magnitude of gas washing fractionation can be quantitatively assessed by the variation in the distribution of n-alkanes of bulk oil. For example, this method has been well applied to assess the influence of gas washing fractionation effect at the Eugene Island oil field of the U.S. Louisiana offshore, the Gulf of Mexico Basin [1,8] .…”

mentioning

confidence: 99%

See 3 more Smart Citations

Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin, Northwest China

Yang

Geng

Liao

et al. 2009

Sci. China Ser. D-Earth Sci.

View full text Add to dashboard Cite

Gas washing has been known in the Tazhong area of the Tarim Basin, but its quantitative assessment has not yet been reported. Here the influence of gas washing fractionation in the area was discussed based on the gas chromatogram data of 68 oils and the results of the mixing experiments of a black oil and a condensate. The results show that the intensity of gas washing fractionation decreased generally from northern to southern part and vertically from deep reservoirs to shallow reservoirs. The gas washing fractionation was mainly controlled by fault systems in this area, with the increase of n-alkane mass depletion positively correlated to the number and scale of faults. Gas washing fractionation appears to have affected the hydrocarbon property, and as a result the diversity of the crude oils is markedly controlled by gas washing. In addition, the occurrence of waxy oil in this area may be resulted from multiple factors including gas washing, mixed filling and migration fractionation.gas washing, n-alkane mole fraction, n-alkane mass depletion, Tazhong area, Tarim Basin

show abstract

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

Section: Quantification Methods Of Gas Washingmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin, Northwest China

Yang

Geng

Liao

et al. 2009

Sci. China Ser. D-Earth Sci.

View full text Add to dashboard Cite

show abstract

“…In one case, oils from the same reservoir show varying degrees of biodegradation. There is no evidence based on n-alkane envelopes for gas washing of the Jolliet oils (Losh, et al, 2002a). However, gas washing might not be observed if biodegradation was removing n-alkanes faster than they could be replaced by reservoir recharging.…”

Section: (Summary Source and Maturity Variations Thru Transect)mentioning

confidence: 99%

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Whelan¹

2006

View full text Add to dashboard Cite

Origins and accumulation processes of the Ordovician gas condensate in the Tazhong area, Tarim Basin, northwest China

et al. 2017

View full text Add to dashboard Cite

Abundant gas condensates have been proven in the Ordovician carbonate reservoirs in the Tazhong area, the centre of the Tarim Basin, where complicated geological evolution and multiple hydrocarbon accumulations have occurred. Property, geochemistry, and stable carbon isotopes of the Ordovician condensate are characterized to identify the oil and gas origins in the Tazhong area. Fluid inclusion data, combined with numerical modelling methods was used to determine petroleum accumulation processes. Our results suggest that oils are characterized by mixed sources, with 64% of contributions from the Middle‐Upper Ordovician (O2+3) source rocks and 36% of contributions from the Lower‐Middle Cambrian (Є1+2) source rocks. Gases are primarily generated from the thermal cracking of pre‐existing oils in the underlying strata, with a small amount derived from kerogen cracking accompanied with oil generation. Three petroleum filling stages are determined, including the filling of the Є1+2‐derived oils during the Late Hercynian period, filling of the O2+3‐derived oils during the Yanshan period and oil‐cracking‐gas charge during the Himalayan period. The accumulation processes and relative contribution ratios of the two source rocks vary among the reservoirs and are mainly related to the transport system. Due to the lack of faults in the regions away from the No. 1 Fault Belt, the Є1+2‐derived oils are difficult to fill into the Ordovician reservoirs through the gypsolyte, and thus the accumulated oils are mainly from the O2+3 source rocks. The percentage of the O2+3‐derived oils is high in the southeast and northwest segments of the No. 1 Fault Belt, but relatively low in the middle segment and the vicinity of the No. 10 Structure Belt. Likewise, the late gas charge intensity is controlled by regionally varying conduit systems. Gas condensate formed in reservoirs with high gas/oil ratios. Otherwise, light oil retains with respect to low gas/oil ratios.

show abstract

Gas washing of oil along a regional transect, offshore Louisiana

Cited by 96 publications

References 3 publications

Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin, Northwest China

Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin, Northwest China

Organic Geochemistry of Continental Margin and Deep Ocean Sediments

Origins and accumulation processes of the Ordovician gas condensate in the Tazhong area, Tarim Basin, northwest China

Contact Info

Product

Resources

About