Combined Petroleum System Modeling and Comprehensive Two-Dimensional Gas Chromatography To Improve Understanding of the Crude Oil Chemistry in the Llanos Basin, Colombia

Bartha, Attila; Nicolais, Nelly De; Sharma, V. P.; Roy, Subarna; Srivastava, Rajiv K.; Pomerantz, Andrew E.; Sanclemente, Milton; Perez, Wilmar; Nelson, Robert K.; Reddy, Christopher M.; Gros, Jonas; Arey, J. Samuel; Lelijveld, Jaron; Dubey, Sharad; Tortella, Diego; Hantschel, Thomas; Peters, Kenneth E.; Mullins, Oliver C.

doi:10.1021/acs.energyfuels.5b00529

Cited by 23 publications

(21 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Environmental degradation adds to the complexity of oil-derived material, and GC × GC methods have found applications in the analysis of processed crude oil 101 and biodegradation products of petroleum in the environment. 102 – 104 Contaminated soils and leaching water analyses have been reported.…”

Section: Application Of Gc × Gcmentioning

confidence: 99%

Recent advances in the application of 2-dimensional gas chromatography with soft and hard ionisation time-of-flight mass spectrometry in environmental analysis

Alam

Harrison

2016

Chem. Sci.

View full text Add to dashboard Cite

show abstract

Section: Application Of Gc × Gcmentioning

confidence: 99%

Recent advances in the application of 2-dimensional gas chromatography with soft and hard ionisation time-of-flight mass spectrometry in environmental analysis

Alam

Harrison

2016

Chem. Sci.

View full text Add to dashboard Cite

show abstract

“…GC × GC-TOFMS is used to assign retention times to compounds that are then used in GC × GC-FID measurements for quantitative analysis of individual peaks. Details of the GC × GC with flame ionization detection and GC × GC with mass spectrometry for peak assignments are provided elsewhere. , Figure , shown below, is an example of GC × GC analysis for a crude oil acquired in the Llanos Basin in Colombia …”

Section: Experimental Methods and Interpretationmentioning

confidence: 99%

“…Systematics in RFG processes are evident, and it is now routine to use an RFG perspective to evaluate reservoirs. Published case studies include reservoir compartmentalization, , and its inverse reservoir connectivity and fluid equilibration, ,,,− diffusive gradients in oilfields, − asphaltene migration via density inversions, − heavy oil and tar formation, − heavy oil equilibration, ,− biodegradation with a single reservoir charge of oil, biodegradation with multiple charges of oil, , biodegradation with spill-fill reservoir filling, and water washing of crude oil, , among many other concerns …”

Section: Introductionmentioning

confidence: 99%

Reservoir Fluid Geodynamics: The Chemistry and Physics of Oilfield Reservoir Fluids after Trap Filling

et al. 2017

Self Cite

View full text Add to dashboard Cite

Oilfield reservoirs exhibit a wide array of complexities that have great impact on the efficiency of oil production. Major challenges include delineating overall reservoir architecture and the distributions of the contained fluids. Reservoir crude oils consist of dissolved gases, liquids, and dissolved solids (the asphaltenes); the corresponding compositional variations and phase transitions within reservoirs greatly impact production strategies and economic value. Standard workflows for understanding reservoir (rock) architecture are subsumed in the discipline “geodynamics”, which incorporates the initial rock depositional setting and subsequent alterations through geologic time to yield the present-day reservoir. However, reservoir fluids are not generally treated in such a systematic manner. Petroleum system modeling provides the timing, type, and volume of hydrocarbon fluids that charge into reservoirs. However, there is little treatment regarding how these fluids change after filling the reservoir. A significant limitation had been the lack of thermodynamic treatment of asphaltenes in reservoir crude oils. Consequently, projecting reservoir fluid properties away from the wellbore has been problematic. “Reservoir fluid geodynamics” (RFG) is the newly formalized discipline that incorporates changes in the distributions of reservoir fluids and phase transitions over geologic time. A key enabling advance is the recently developed ability to treat asphaltene gradients in oilfield reservoirs using the Flory–Huggins–Zuo equation of state (FHZ EoS) with its reliance on the Yen–Mullins model of asphaltenes. In addition, in situ downhole fluid analysis in oil wells provides accurate vertical and lateral fluid gradients in reservoirs in a cost-effective manner. Thermodynamic equilibrium can now be recognized; equilibrated fluids imply connected reservoirs, meaning a single flow unit. Disequilibrium fluid gradients imply ongoing or recent fluid processes in geologic time. The analysis of 35 oilfields (with more than 100 oil reservoirs) has allowed the identification of various reservoir fluid geodynamic processes. Some processes, such as biodegradation, have long been studied; nevertheless, even in these cases, inclusion of the thermodynamic modeling yields accurate predictions of distributions of key fluid attributes. Many other RFG processes are elucidated herein and are shown to impact major reservoir concerns for production. The resulting fundamental understanding of the physics and chemistry of these RFG processes enables measurements made at the wellbore to be used as a basis for accurate prediction of fluid properties throughout the reservoir.

show abstract

“…[83] Here, advanced analytical chemistry are combined with petroleum system modeling to delineate these geodynamic processes.…”

Section: Numerical Simulations and Case Studiesmentioning

confidence: 99%

The dynamic Flory-Huggins-Zuo equation of state

Wang¹,

Zuo

Chen

et al. 2015

Energy

Self Cite

View full text Add to dashboard Cite

Combined Petroleum System Modeling and Comprehensive Two-Dimensional Gas Chromatography To Improve Understanding of the Crude Oil Chemistry in the Llanos Basin, Colombia

Abstract: 19

Cited by 23 publications

References 42 publications

Recent advances in the application of 2-dimensional gas chromatography with soft and hard ionisation time-of-flight mass spectrometry in environmental analysis

Recent advances in the application of 2-dimensional gas chromatography with soft and hard ionisation time-of-flight mass spectrometry in environmental analysis

Reservoir Fluid Geodynamics: The Chemistry and Physics of Oilfield Reservoir Fluids after Trap Filling

The dynamic Flory-Huggins-Zuo equation of state

Contact Info

Product

Resources

About