Improved Hydrocarbon Recovery of a Lean Retrograde Gas Reservoir Under Propane Injection

Yusof, Muhammad Aslam Md; Fuad, Iqmal Irsyad Mohammad; Matali, Awangku Alizul Azahari Awangku

doi:10.2118/177424-ms

Cited by 3 publications

(1 citation statement)

References 31 publications

(12 reference statements)

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“…This is thought to be due to different set of relative permeability were used. Thus, the change in relative permeability can be appreciated in pressure behavior description which further supports the pressure drop prediction [23]- [25]. In enumeration process, the shift in relative permeability (as shown in Fig.…”

Section: Resultssupporting

confidence: 79%

Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

Fuad,

Lee,

Negash

et al. 2023

Unconventional Methods for Geoscience, Shale Gas and Petroleum in the 21st Century

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This paper presents Enumeration Method in gas condensate reservoir simulation to study the condensate banking complex physics phenomena. Initially, coarse scale grid is commonly used for gas condensate reservoir simulation study. Nevertheless, the coarse scale simulation disregards the condensate bank or it is not able to demonstrate the precise distribution and effects. By introducing Local Grid Refinement (LGR) in simulation model arguably brings a better representation of the condensate bank effect near wellbore but significantly increases the run time. This become severe especially in full field modeling with comingled production. Therefore, enumeration initialization approach was developed to divide the simulation explicitly in coarse scale simulation. During the stops, a region near wellbore was designed where condensate bank parameters were modified based on the history matching. Hence, the drastic change of well performance due to condensate banking could be captured. This drastic change could not physically described in conventional coarse scale simulation model, thus affect prediction accuracy. Comparison between enumeration ways with conventional approach were then investigated. It was found that enumeration method shows a better prediction in investigating the behavior. This is due to its ability to predict mobility changes due to condensate banking, consequently, improve the condensate bank characterization.

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Section: Resultssupporting

confidence: 79%

Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

Fuad,

Lee,

Negash

et al. 2023

Unconventional Methods for Geoscience, Shale Gas and Petroleum in the 21st Century

View full text Add to dashboard Cite

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Multiphase flow challenges in drilling, completions, and injection: Part 1

Obi,

Hasan,

Rahman

et al. 2024

Petroleum

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Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

Fuad

Lee

Akhir

et al. 2017

Day 3 Wed, November 15, 2017

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In this paper, enumeration method was developed to simulate gas condensate reservoir behavior based on the different condensate banking zones. Sharp increment of pressure drawdown near wellbore and description of condensate bank away the wellbore are still part of challenges in simulating gas condensate reservoir. This method allows prediction on how pressure behavior near and away wellbore and how the condensate banking will evolve in future due to the simultaneous flow of gas and condensate in the reservoir. A single well model has been developed to investigate the effect of condensate bank on pressure behavior in gas condensate reservoir. Upon production, gas condensate reservoir creates different zones based on different phase mobility, resulting from condensate banking. Enumeration initialization approach is to divide the simulation explicitly for the multiple stages. During the stops, condensate bank parameters have been modified at each zone to describe drastic change of well performance due to condensate banking. A representative matured gas condensate reservoir from Malay Basin has been selected for the purpose. The effect of the mobility changes to pressure behavior is then investigated. Comparison of pressure behavior between enumeration ways with conventional approach have been presented. It was found that enumeration method shows better prediction in investigating the pressure behavior and condensate saturation near and away wellbore during stabilized production. It is due to its ability to predict mobility changes at every zones. The change of relative permeability to variations in fluid saturation, velocity, and interfacial tension cause increment of pressure drawdown. In analytical analysis, the increment of pressure drawdown mostly demarcated as positive skin to a factor of 30 – 90. With enumeration method in place, pressure behavior can be quantified without defining the positive skin, thus improve the condensate bank characterization. This paper improves accuracy in defining complex physics of condensate banking phenomena, also providing key tool in quantifying the condensate bank. Enumeration approach screens the potential condensate banking in later well life and appropriate mitigation technique can be selected – optimize drawdown or change wettability as the positive skin term in simulation has been replaced.

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Improved Hydrocarbon Recovery of a Lean Retrograde Gas Reservoir Under Propane Injection

Cited by 3 publications

References 31 publications

Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

Multiphase flow challenges in drilling, completions, and injection: Part 1

Enumeration Approach in Condensate Banking Study of Gas Condensate Reservoir

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