A framework for assessing the uncertainty in wave energy delivery to targeted subsurface formations

Karve, Pranav; Kallivokas, Loukas F.; Manuel, Lance

doi:10.1016/j.jappgeo.2015.12.001

Cited by 10 publications

(6 citation statements)

References 28 publications

(30 reference statements)

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“…Our numerical experiments indicate that optimal load locations play a key role in delivering vibrational energy to the targeted formation and that horizontally polarized loads are preferred for delivering wave energy to deeply situated geological formations than vertically polarized loads. The inverse source and the associated reliability quantification [47] methodologies provide an analytical framework for designing field implementations in applications of interest to wave-based enhanced oil recovery. where F j sp is the vector of nodal values corresponding to the spatial variation of the j -th source and the function f j .t / defines the value of j -th source at time t .…”

Section: Discussionmentioning

confidence: 99%

“…This observation calls for a formal treatment of the uncertainties in the input data – either by formulating and resolving a Bayesian inverse source problem or by quantifying the effects of uncertainties in the input using sensitivity and/or reliability analyses. In , Karve et al discussed a systematic framework for evaluating the uncertainty in the wave energy delivery to targeted geo‐formations. They formulated the wave propagation problem for a two‐dimensional, elastic geostructure, and performed sensitivity as well as first‐order reliability analyses to compute the probabilities of failure to achieve threshold values of KE inc .…”

Section: Numerical Experimentsmentioning

confidence: 99%

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Source parameter inversion for wave energy focusing to a target inclusion embedded in a three‐dimensional heterogeneous halfspace

Karve

Fathi

Poursartip

et al. 2016

Num Anal Meth Geomechanics

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Summary We discuss a methodology for computing the optimal spatio‐temporal characteristics of surface wave sources necessary for delivering wave energy to a targeted subsurface formation. The wave stimulation is applied to the target formation to enhance the mobility of particles trapped in its pore space. We formulate the associated wave propagation problem for three‐dimensional, heterogeneous, semi‐infinite, elastic media. We use hybrid perfectly matched layers at the truncation boundaries of the computational domain to mimic the semi‐infiniteness of the physical domain of interest. To recover the source parameters, we define an inverse source problem using the mathematical framework of constrained optimization and resolve it by employing a reduced‐space approach. We report the results of our numerical experiments attesting to the methodology's ability to specify the spatio‐temporal description of sources that maximize wave energy delivery. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Section: Numerical Experimentsmentioning

confidence: 99%

Source parameter inversion for wave energy focusing to a target inclusion embedded in a three‐dimensional heterogeneous halfspace

Karve

Fathi

Poursartip

et al. 2016

Num Anal Meth Geomechanics

Self Cite

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“…In terms of the coupled seepage of saturated rock and fluid disturbances with elastic wave excitation, the Biot porous medium theory and the BISQ model, which considered liquid–solid coupling and which were proposed by Biot, Dvorkin, and Nur, were used to analyze the laws of longitudinal and transverse wave propagation, dissipation, and attenuation in porous media considering fluid–solid coupling and jet flow conditions. , Uetani et al explored wells with significant production decline and reservoir injury in the near-well zone and found that seismic waves could promote coupled subsurface oil–water seepage. Karve et al found that surface initiation waves could modify the subsurface shallow seepage field, drawing on the principle of elastic wave propagation in seismic surveys and the numerical simulation of a two-dimensional vertical model. Based on the Biot theory, Zheng et al established a coupled seepage model of the low-frequency waves in porous media by introducing the laws of porosity, permeability, and fluid physical property changes during fluctuations, and they analyzed the influence of the fluctuation parameters on the seepage process …”

Section: Introductionmentioning

confidence: 99%

“…17,18 Uetani et al 19 explored wells with significant production decline and reservoir injury in the near-well zone and found that seismic waves could promote coupled subsurface oil− water seepage. Karve et al 20 found that surface initiation waves could modify the subsurface shallow seepage field, drawing on the principle of elastic wave propagation in seismic surveys and the numerical simulation of a two-dimensional vertical model. Based on the Biot theory, Zheng et al established a coupled seepage model of the low-frequency waves in porous media by introducing the laws of porosity, permeability, and fluid physical property changes during fluctuations, and they analyzed the influence of the fluctuation parameters on the seepage process.…”

Section: Introductionmentioning

confidence: 99%

Study of the Surfactant Transport Law Based on an Improved Adsorption Model with an Artificial Seismic Wave

Liu

Xia

et al. 2022

Langmuir

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To explore the law and mechanism of enhanced surfactant flooding with a low-frequency artificial seismic wave, for single-phase fluids in porous media, a heterogeneous two-stage adsorption model for a surfactant with a low-frequency artificial seismic wave is introduced into the surfactant transport equation of a single-phase fluid. With this model, the surfactant fluid transport model in porous media with an artificial seismic wave is obtained. The model is solved using the C–N difference and chasing method. The migration law of the surfactant is simulated and quantitatively analyzed for different vibration accelerations, injection slug sizes, displacement speeds, and reservoir parameters with the action of low-frequency artificial seismic waves. The results show that artificial seismic waves can increase the effective range of the surfactants and reduce the number of chemical agents through reduced adsorption. Low-frequency vibration with the same surfactant injection rate can increase the effective range by a factor greater than one. For the same effective action distance, the dose of chemical agents can be reduced by more than 60%, and the optimal acceleration and the injection slug size are 0.3 m/s2 and 0.4 PV, respectively. With the increase of the injection rate, the effect of low-frequency vibration on the diffusion and transport of the surfactant decreases. A low-frequency wave combined surfactant has a better effect on the low permeability reservoirs. The research results provide important support for further understanding of the low-frequency artificial seismic wave composite surfactant flooding law and the optimization of the field parameters.

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“…When the porous media with open-type cracks was impacted by low frequency vibration oil production technology, the fluid flow was coupling with strong matrix deformation and elastic wave propagation ( [2][3][4]. When the shock intensity reached a certain level, the increased fluid pressure inner crack which was induced by elastic wave would lead to the change of fracture morphology.…”

Section: Introductionmentioning

confidence: 99%

Simulation on the Channeling Flow in Porous Media with Open-type Crack under Low Frequency Vibration

Zheng¹,

Fan²,

Wang³

et al. 2019

Proceedings of the 2019 International Conference on Modeling, Simulation and Big Data Analysis (MSBDA 2019)

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The application of wave stimulation technology in low permeability reservoirs with natural cracks was involved with the coupling of wave-induced flow, initial flow and solid deformation during the wave propagation process. Researchers had much work on the mechanism of seepage variation in dual porous media with constant permeability crack. However, the natural crack might be open-type some time, of which the width could increase with fluid pressure. The seepage in dual porous media under wave impact became more complicated. Thereby, a mathematic model about the seepage in porous media with open-type crack under low frequency vibration excitation was established. A comparison on the variation of channeling flow between matrix and crack was made before and after low frequency wave stimulation. The influence of a coefficient in the above empirical relationship on channeling flow rate was analyzed. It was found that the channeling rate (4 -6 times with the simulation parameters) and permeability of open-type crack in dual porous media had both increased after the impact of low frequency vibration. The stimulation effect decreased gradually with the attenuation of wave. The easier the crack was to open, the stronger the variation of crack permeability was.

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A framework for assessing the uncertainty in wave energy delivery to targeted subsurface formations

Cited by 10 publications

References 28 publications

Source parameter inversion for wave energy focusing to a target inclusion embedded in a three‐dimensional heterogeneous halfspace

Source parameter inversion for wave energy focusing to a target inclusion embedded in a three‐dimensional heterogeneous halfspace

Study of the Surfactant Transport Law Based on an Improved Adsorption Model with an Artificial Seismic Wave

Simulation on the Channeling Flow in Porous Media with Open-type Crack under Low Frequency Vibration

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