Effect of Formation Compaction on Steam Injection Response

Rattia, Aquiles Jesus; Ali, S.M. Farouq

doi:10.2118/10323-ms

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…Field development of large compacting fields such as Groningen, Wilmington, the Bolivar coast of Venezuela, or Ekofisk led to the development of techniques for estimating compaction, starting with the work of Geertsma [13][14][15] and followed by a number of modified reservoir models. [16][17][18][19] The common feature of such reservoir-compaction models was that the compaction is treated as a 1D problem (uniaxial strain) by assuming that (a) only vertical deformations take place and (b) each vertical column of blocks deforms independently. Consequently, the porosity changes were calculated by modifying the conventional compressibility cR based on the results of uniaxial strain laboratory experiments, and the stress problem was not solved.…”

Section: Modeling Of Compactionmentioning

confidence: 99%

Advances in Coupled Geomechanical and Reservoir Modeling With Applications to Reservoir Compaction

Settari¹,

Walters²

1999

SPE Reservoir Simulation Symposium

167

125

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Coupled geomechanical and reservoir modeling is becoming feasible on a full-field scale. This paper describes the advances of the coupled model described previously, 1 its extensions for modeling compaction, and the application of the model in full-field studies. The advances of the theory and numerical implementation since the original work 1 make it practical to perform full-field coupled studies with complex, realistic descriptions of the geomechanical behavior of the reservoir and shales, which allows prediction of stress changes, reservoir compaction, and surface subsidence. These capabilities are demonstrated in field examples that analyze and predict classical pressure-induced compaction in a gas field and thermally induced compaction in a heavy-oil field. In both cases, the methodology of interpreting the geomechanical laboratory and field data and their integration in the coupled modeling process was the key to obtaining a realistic predictive tool. The examples demonstrate that the technology is maturing to the point that conventional studies can be converted to coupled modeling on a fairly routine basis.

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Section: Modeling Of Compactionmentioning

confidence: 99%

Advances in Coupled Geomechanical and Reservoir Modeling With Applications to Reservoir Compaction

Settari¹,

Walters²

1999

SPE Reservoir Simulation Symposium

167

125

View full text Add to dashboard Cite

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“…Eq. 1 can then be written %t[q,EPpxipSpAxAYAz(t)]+flux terms = source terms, ... (2) where Az(t) is written as a function of time because gridblock thickness may change as the reservoir compacts. Porosity is related to Az and the rock density through the constancy of mass of rock in the gridblock as follows: Letting subscript zero denote the known initial condition and assuming that Ax and Ay remain constant (compaction occurs only in the z direction), we obtain Rock density is known to be a function of pressure and temperature through the equation of state for the rock.…”

Section: Compaction In Reservoir Simulationmentioning

confidence: 99%

Compaction Within the South Belridge Diatomite

Chase¹,

Dietrich²

1989

SPE Reservoir Engineering

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3D Geomechanical Finite Element Analysis for a Deepwater Faulted Reservoir in the Eastern Mediterranean

Markou,

Papanastasiou

2024

Rock Mech Rock Eng

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Hydrocarbon reservoir structures are subjected to tectonic forces along the geological time that cause rock deformation and break into faulted zones. Faulted reservoirs, enclose certain complexity in terms of the distributed effective stresses, rock plastic alteration, slipping and fault block displacement. In this study, we develop a three-dimensional (3D) geomechanical reservoir model with faulted and compartmentalized geometry, located in the offshore deepwater environment of the Levantine basin in the Eastern Mediterranean, based on non-linear finite element analysis (FEA). A regional structural and stress map was also constructed, integrating various data sources, to present the regional stress setting to enhance this work. The assessment of the geomechanical impacts on the reservoir provides important information in reservoir studies, that can analyze potential stability issues during the depletion to optimize the field production planning. Stress–strain evolution in the reservoir is primarily affected by the in situ stresses, the geometry of faults, and the degree of compartmentalization. The results demonstrate clearly the mechanism of stress transfer transmission and the impact between the fault block compartments in the reservoir. Fault contacts exhibit a higher tendency for rock displacements and deformations. Plastic yielding develops at a narrow extent along the faults. The risk of fault slipping depends on the depletion strategy, but it is low in all cases. No significant reduction in permeability was found at the end of reservoir depletion. Overall, geomechanics integration enriches and improves the dynamic reservoir models and applications.

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Effect of Formation Compaction on Steam Injection Response

Cited by 11 publications

References 6 publications

Advances in Coupled Geomechanical and Reservoir Modeling With Applications to Reservoir Compaction

Advances in Coupled Geomechanical and Reservoir Modeling With Applications to Reservoir Compaction

Compaction Within the South Belridge Diatomite

3D Geomechanical Finite Element Analysis for a Deepwater Faulted Reservoir in the Eastern Mediterranean

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