Challenges and Rewards in the Resource Evaluation and Flow Modeling of Transition Zone

Masoudi, Rahim; Altunbay, Mehmet; Karkooti, Hooman; Mubaraki, A.H.; Mudaliar, Kokulananda; Salmi, Norbashinatun

doi:10.2118/171990-ms

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…Applying the above mentioned workflows for the sand/shale and lithology modeling as well as the saturation function upscaling and flow modeling, the field performance is history matched with far less modification and the quality of the history match is also improved especially for the thin bed intervals ( Figure 10) [14] .…”

Section: Generation Of Pseudo Kr Curvesmentioning

confidence: 99%

Challenges in Data Integration, Design and Modeling of the Coreflood for FWAG EOR

Jalan¹,

Karkooti²,

Masoudi³

et al. 2014

International Petroleum Technology Conference

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Most of the Malaysian oil fields are mature and the need for IOR/EOR driven development planning is vital to maintain the national production. The most common EOR methods employed in Malaysia are immiscible WAG and CEOR. However, one of the main problems in WAG is how to control gas mobility to minimize the conformance issue and maximize the 3-phase region in the reservoir. Using Foam is a relatively cost effective way of controlling gas mobility by means of low concentration of surfactant. However, the practical implementation has been hindered due to the lack of general understanding of the complex process of foam phase behavior and flow dynamics in porous media, the absence of reliable predictive models of multi-phase foam flow, and also the challenges in upscaling the lab results to the field application.The data integration, fundamental understanding, input evaluation and predictive modeling of WAG and Foam Assisted WAG (FAWAG) have been reviewed in this work using two extensive core flooding data of one of the Malaysian oil field in two different simulators. Review of the laboratory procedure showed the importance of taking proper pre-design measures to be able to achieve conclusive results. The modeling practice shows that output parameters from coreflood experiments might be affected by forced history matching and consequently unrealistic simulation input parameters as well as the shortcomings of the predictive capability of different simulators.The study showed that in the core flood experiments and simulations, various aspects need to be carefully considered including:• Reliable data integration and understanding of the physics/dynamics involved in the process are important for proper evaluation of the foam effect. • Simulation studies to be used for the pre-design and optimization of the coreflood experiment and parameters (i.e., rate, cycles, pore volume, etc.). • The measured rates and pressures must be of consistent resolution to be able to capture the exact phase breakthroughs and precise fractional flows of the experiment. • The SCAL endpoints and WAG parameters must be measured and fixed prior to FAWAG experiment and simulation.• Capillary end effect, formation water salinity effect on contact angle and capillary pressure impact on coreflood results needs to be carefully considered in both laboratory and modeling stages. • Different commercial simulators may results in different prediction on foam output and the effect, hence proper evaluation, de-risking and sensitivity analysis should be performed to capture the foam EOR window of opportunity.

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Section: Generation Of Pseudo Kr Curvesmentioning

confidence: 99%

Challenges in Data Integration, Design and Modeling of the Coreflood for FWAG EOR

Jalan¹,

Karkooti²,

Masoudi³

et al. 2014

International Petroleum Technology Conference

Self Cite

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A comprehensive review on characterization and modeling of thick capillary transition zones in carbonate reservoirs

Bera¹,

Belhaj²

2016

Journal of Unconventional Oil and Gas Resources

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Experimental investigation of capillary pressure diagram in oil/water transition zone of low-permeability reservoirs

Ma,

Li,

Fan

et al. 2024

Physics of Fluids

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The oil/water transition zone, particularly pronounced in low-permeability formations with small pore diameters and high capillary pressure, contains a substantial portion of original oil in place. The capillary pressure curves provide essential data for the calculation of the original oil in place as well as the oilfield development simulation. However, the traditional single capillary pressure curve cannot provide enough information. To address this challenge, an experimental investigation was conducted to explore the capillary pressure diagrams within the oil/water transition zone of low-permeability reservoirs. The results shed light on the complex behavior of capillary pressure, the influence of initial water saturation, and the relationship between initial oil saturation and residual oil saturation. Incorporating the behavior of capillary pressure into reservoir simulation models can enhance reservoir characterization and improve the accuracy of oil production performance in low-permeability reservoirs.

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Challenges and Rewards in the Resource Evaluation and Flow Modeling of Transition Zone

Cited by 3 publications

References 9 publications

Challenges in Data Integration, Design and Modeling of the Coreflood for FWAG EOR

Challenges in Data Integration, Design and Modeling of the Coreflood for FWAG EOR

A comprehensive review on characterization and modeling of thick capillary transition zones in carbonate reservoirs

Experimental investigation of capillary pressure diagram in oil/water transition zone of low-permeability reservoirs

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