Subsidence Modeling Validation Through Back Analysis for an Italian Gas Storage Field

Codegone, Giulia; Rocca, Vera; Verga, Francesca; Coti, Christian

doi:10.1007/s10706-016-9986-9

Cited by 20 publications

(13 citation statements)

References 26 publications

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“…The fluid-flow and the stress-strain equations are solved separately using dedicated reservoir and geomechanical simulators. As has been discussed in the literature [8][9][10][28][29][30][31], the one-way coupling approach represents the primary method for subsidence calculation due to its relative tight computational time and easiness of application together with reliable phenomena simulation and prediction. Moreover, the geomechanical model characterization can be properly achieved via routine geotechnical laboratory analysis for strength and deformation parameters determination.…”

Section: Coupled Analysismentioning

confidence: 99%

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

et al. 2018

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This paper investigates the effect on compaction and subsidence induced by gas production using two techniques for coupling fluid-flow and geomechanics. To this end, a synthetic case representing a typical, shallow, weakly compacted, multi-layered, offshore gas reservoir in the Adriatic Sea was set up and its dynamic and mechanic behavior during gas production was analyzed. Three numerical models (i.e., geological; fluid-flow and geomechanical) were built using high quality data set from an existing gas-bearing formation (off-shore Croatia). The laboratory analyses for deformation and strength parameters determination were conducted together with tests to define the coupling law required by the adopted coupling technique. Experimental data showed strong permeability stress-dependent behavior of core samples retrieved from gas bearing layers. Nevertheless, the results showed that the system stress-strain evolution always remains in the elastic domain and the deformation magnitude is extremely narrow (10 −4 m/m) due to the limited net effective stress variation induced by the stressed production scenarios. The difference between the coupling techniques is negligible in terms of subsidence evolution at ground level but not in terms of compaction at reservoir level. Furthermore, the two-way coupled technique could be used for better development planning by integrating reservoir, drilling and completion management.

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Section: Coupled Analysismentioning

confidence: 99%

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

et al. 2018

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“…The static and dynamic approaches for UGS analysis follow the basic workflow of a standard reservoir study. Furthermore, rock mechanical features should also be incorporated together with the structural, sedimentological, petrophysical, and fluid-dynamic properties into the reservoir model so as to investigate not only single phenomena but also their mutual interactions through a coupled fluid-flow and stress/strain approach [66,67].…”

Section: Aquifersmentioning

confidence: 99%

The Virtuous CO₂ Circle or the Three Cs: Capture, Cache, and Convert

Bocchini

Castro²,

Cocuzza

et al. 2017

Journal of Nanomaterials

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It is not the first time in human history, nor will it be the last for that matter, that a collective problem calls for a collective response. Climate change fueled by greenhouse emissions affects humankind alike. Despite the disagreement among policymakers and scientists on the severity of the issue, the truth is that the problem remains. A broad look at different technologies being used today in different fields has led to the idea of bringing them together in an attempt to offer a viable solution to reducing anthropogenic CO 2 . The following paper describes how the nanotechnologies, available or soon to be available, would make CO 2 capture, cache, and conversion (coined the three Cs) a valid way for achieving a more sustainable energy society. Authors also set out to highlight with this work how knowledge transfer is instrumental in the development of technology and how methodical assessment of crossovers can expedite research when time plays against us.

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“…Subsequently, the results obtained by the fluid diffusion model are applied to the geomechanical model, following a 1-way coupling strategy as is usually done in hydrogeological and petroleum engineering. [37][38][39][40] Hence, the stresses appearing in the model, and therefore in the results of the numerical simulations in the paper, are always considered effective. Depending on the constitutive law for the solid phase, the term Φ of Equation 6 is generally nonlinear.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

“…where P 0 and k are material parameters associated with the volumetric part of the deformation, while 0 is the elastic shear modulus associated with the deviatoric part. The free energy function defined in Equation 40 resembles the equation proposed originally by Houlsby 43 and then adopted by several authors [44][45][46][47] as well, mainly to describe the elastic part of the constitutive behavior of clays. With respect to the original formulation, the equation proposed in this model differs by the introduction of an additional contribution, ie, −P 0 v , which guarantees that the stress state is null in case of null strain state.…”

Section: The Pseudoelastic Constitutive Model 321 Formulationmentioning

confidence: 99%

A two‐invariant pseudoelastic model for reservoir compaction

Spiezia

Ferronato

Janna

et al. 2017

Num Anal Meth Geomechanics

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Summary Predicting the deformations of deep reservoirs due to fluid withdrawal/injection is a challenging task that could have important environmental, social, and economical impacts. Finite element models, if endowed with an appropriate constitutive law, represent a useful tool for computing the displacements, the deformations, and the stress distributions in reservoir applications. Several studies show that hypoelastic laws, based on a stress‐dependent vertical compressibility, are able to provide accurate results, confirmed by in situ and satellite measurements. On the other hand, such laws present some weaknesses related to the numerical implementation, in particular due to the nonsymmetry of the tangent operator. This paper presents a new constitutive model based on 2 invariants (the mean normal and deviatoric stresses), characterized by a variable pressure‐dependent bulk modulus K. This constitutive law allows for overcoming most shortcomings of the hypoelastic law, although preserving the same accuracy, reliability, and ease of use and calibration. This paper presents a procedure to identify the parameters of the new model, starting from the typically available data on the vertical compressibility. Numerical results show a good agreement between the 2 laws, suggesting the proposed approach as a valid alternative in reservoir applications.

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Subsidence Modeling Validation Through Back Analysis for an Italian Gas Storage Field

Cited by 20 publications

References 26 publications

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

The Virtuous CO₂ Circle or the Three Cs: Capture, Cache, and Convert

A two‐invariant pseudoelastic model for reservoir compaction

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Subsidence Modeling Validation Through Back Analysis for an Italian Gas Storage Field

Cited by 20 publications

References 26 publications

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

A Coupled Fluid Flow—Geomechanical Approach for Subsidence Numerical Simulation

The Virtuous CO2 Circle or the Three Cs: Capture, Cache, and Convert

A two‐invariant pseudoelastic model for reservoir compaction

Contact Info

Product

Resources

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The Virtuous CO₂ Circle or the Three Cs: Capture, Cache, and Convert