Modeling Reservoir Geometry With Irregular Grids

Heinemann, Z.E.; Brand, Clemens; Munka, M.; Chen, Y.M.

doi:10.2118/18412-pa

Cited by 137 publications

(18 citation statements)

References 26 publications

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“…UST numerical well test software is based on PEBI gridding (Li et al 2014;Zha et al 2008;Heinemann et al 1991;Mahani and Evazi 2010). The software is used to generate the numerical simulation to study effect of water phase saturation on the formation of thief zone in the mature reservoir.…”

Section: Effect Of Water Saturation On Transient Pressure Response Bamentioning

confidence: 99%

Thief zone identification based on transient pressure analysis: a field case study

Yang

2015

J Petrol Explor Prod Technol

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Thief zones are generally a channel with high absolute permeability. However, a not very strict theory analysis shows that neglecting the effect of variant of water saturation on formation of thief zone in mature reservoirs cannot explain some thief zones in mature reservoirs. This paper focuses on the effect of water saturation on thief zone development for wells in mature reservoirs with areal permeability heterogeneity. The water saturation increases in high permeable channel with water passing through, which gradually leads to higher value of water phase relative permeability, and thus leads to higher value of effective permeability kÁk rw in the high permeable channel than that in surrounding reservoir. The gradually increasing difference of effective permeability kÁk rw between permeable channel and surrounding reservoir would be the main reason for formation of thief zones in mature reservoir. The oil-water two-phase numerical model based on PEBI (perpendicular bisection) gridding is used to study effect of variant of water phase saturation on formation of thief zone. We find that relatively small pressure change and not obvious bump in pressure derivative curves during shut-in are indicators of thief zones in mature reservoirs. This finding provides a further understanding for the thief zone development and also gives us a guidance to interpret the buildup pressure data in the mature sandstone reservoirs. A field case study verifies the effectiveness of the new explanation.

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Section: Effect Of Water Saturation On Transient Pressure Response Bamentioning

confidence: 99%

Thief zone identification based on transient pressure analysis: a field case study

Yang

2015

J Petrol Explor Prod Technol

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“…However, it is well known that finite-difference methods work best if the underlying grid is orthogonal, and numerical errors can be significant if the grid is deformed to match complex reservoir structures (e.g. Heinemann et al 1991;Aziz 1993;Aavatsmark 2002;Lie et al 2012). In addition to solving the ADRE, specific constitutive relationships are needed to model the physico-chemical problem of interest.…”

Section: Background and Challengesmentioning

confidence: 99%

“…PEBI grids are also commonly referred to as 'unstructured grids' but it should be pointed out that PEBI grids provide geometric flexibility mainly in areal dimensions. PEBI grids were first applied in the context of reservoir simulation originally over two decades ago (Heinemann et al 1991), and are now used regularly in some proprietary industry simulators (e.g. Liu et al 2007a, b;Dogru et al 2009;Verma et al 2009) and research simulators (e.g.…”

Section: Selected Advancesmentioning

confidence: 99%

Fundamental controls on fluid flow in carbonates: current workflows to emerging technologies

Agar

Geiger

2014

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The introduction reviews topics relevant to the fundamental controls on fluid flow in carbonate reservoirs and to the prediction of reservoir performance. The review provides research and industry contexts for papers in this volume only. A discussion of global context and frameworks emphasizes the value yet to be captured from compare and contrast studies. Multidisciplinary efforts highlight the importance of greater integration of sedimentology, diagenesis and structural geology. Developments in analytical and experimental methods, stimulated by advances in the materials sciences, support new insights into fundamental (pore-scale) processes in carbonate rocks. Subsurface imaging methods relevant to the delineation of heterogeneities in carbonates highlight techniques that serve to decrease the gap between seismically resolvable features and well-scale measurements. Methods to fuse geological information across scales are advancing through multiscale integration and proxies. A surge in computational power over the last two decades has been accompanied by developments in computational methods and algorithms. Developments related to visualization and data interaction support stronger geoscience-engineering collaborations. High-resolution and real-time monitoring of the subsurface are driving novel sensing capabilities and growing interest in data mining and analytics. Together, these offer an exciting opportunity to learn more about the fundamental fluid-flow processes in carbonate reservoirs at the interwell scale.

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“…For the past two decades, significant effort has been made on the development of unstructured grid algorithms, such as the perpendicular bisector grid proposed by Heinemann (1991). There still exist some technical difficulties with unstructured grids in real field applications and no major commercial simulators currently support unstructured grids.…”

Section: Simulation Grid and Sensitivity Studymentioning

confidence: 99%

Application of Cutting-Edge 3D Seismic Attribute Technology to the Assessment of Geological Reservoirs for CO2 Sequestration

Liner¹,

Zeng²,

Li³

et al. 2010

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Modeling Reservoir Geometry With Irregular Grids

Cited by 137 publications

References 26 publications

Thief zone identification based on transient pressure analysis: a field case study

Thief zone identification based on transient pressure analysis: a field case study

Fundamental controls on fluid flow in carbonates: current workflows to emerging technologies

Application of Cutting-Edge 3D Seismic Attribute Technology to the Assessment of Geological Reservoirs for CO2 Sequestration

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