Well impairment by fines migration in gas fields

Zeinijahromi, Abbas; Vaz, Alexandre; Bedrikovetsky, Pavel

doi:10.1016/j.petrol.2012.02.002

Cited by 58 publications

(31 citation statements)

References 39 publications

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“…Over a period of time, many researchers have not considered this problem deeply and seriously. Even, Zeinijahromi et al (2012) studied the gas well impairment due to fines migration. In this research, the authors have examined the fines detachment and plugging only at the pore-scale level, which ultimately declined the reservoir rock permeability and fluid flow toward the well.…”

Section: List Of Symbolsmentioning

confidence: 99%

“…It should be noted that fines migration will reduce the permeability of a reservoir rock and consequently, there will be a huge decline in the well productivity. Figure 2 is a modified form of Zeinijahromi et al (2012) layout with the indications of heat liberation from fluids and surroundings. The developed model is for the steadystate gas production with steadily accumulating strained fines that showed linear growth in skin factor against the amount produced in situ fine particles.…”

Section: Analytical Model For the Gas Well Adiabatic Behavior Due To mentioning

confidence: 99%

“…Oil and gas reservoirs together with fines are held within the regime of a thermodynamic force. This image is a modified or extended version of Zeinijahromi et al (2012) Usually, the pore structure of the porous media in vast majority comprises an interconnected three-dimensional network of capillaries (Dullien 1992). Figure 3 shows the single-system heat transfer model for gas reservoir.…”

Section: Analytical Model For the Gas Well Adiabatic Behavior Due To mentioning

confidence: 99%

“…3, C indicates the mass concentration of suspended particles and a and s represent volumetric concentrations of attached and strained fines. Actually, this is Zeinijahromi et al (2012) model and we have extended and redrew this figure to create a mathematical-based new thermodynamic theory for fines detachment and migration in porous media.…”

Section: And Eq 3 By Taking This Equation We Havementioning

confidence: 99%

See 3 more Smart Citations

Adiabatic behavior of gas wells due to natural reservoir fines migration: analytical model and CFD study

Subramanian¹,

Mahalingam²,

Ravikumar³

et al. 2019

J Petrol Explor Prod Technol

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The adiabatic behavior of natural gas production well is frequently neglected in the reservoir formation damage study. The temperature of surrounding formation contributes to the smooth flow of natural gas in the wellbore. The heat transfer from the formation and geothermal gradient plays vital role in the efficient transport of gas in the subsurface formation and wellbore. But, fine particles which are attached to the rock surface migrate and are trapped in the pore throats, and as a result, there is deterioration in the permeability. The detachment of fines occurs due to high reservoir temperature and gas internal energy and temperature. Therefore, this paper conducts theoretical and numerical investigations on the adiabatic behavior of natural gas production well due to in situ reservoir fines migration. Firstly, an analytical model is developed and then, numerical models were constructed using CFD simulation tool to study the adiabatic nature of a gas well. A total of 24 cases were run in simulation, and input temperatures such as 200 °C, 250 °C, 300 °C, 350 °C, 400 °C and 450 °C were given for modeling. The results revealed that there was no sign of heat transfer from the wellbore to the surroundings. There was a heat circulation only within the wellbore. During the adiabatic state, the pressure in the central zone of the gas well is moderate, but rises linearly on the radial sides.

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Section: List Of Symbolsmentioning

confidence: 99%

Section: Analytical Model For the Gas Well Adiabatic Behavior Due To mentioning

confidence: 99%

Section: Analytical Model For the Gas Well Adiabatic Behavior Due To mentioning

confidence: 99%

Section: And Eq 3 By Taking This Equation We Havementioning

confidence: 99%

See 2 more Smart Citations

Adiabatic behavior of gas wells due to natural reservoir fines migration: analytical model and CFD study

Subramanian¹,

Mahalingam²,

Ravikumar³

et al. 2019

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

show abstract

“…On the one hand, fines detachment from pore surfaces can carry away small amounts of residual oil from the rock grains, improving displacement efficiency (Bernard 1967), and the reduction of local water-phase effective permeability because of fines migration in water-swept areas provides a simple mobility-control method to enhance the sweep efficiency Zeinijahromi et al 2011Zeinijahromi et al , 2012bZeinijahromi et al , 2013. On the other hand, fines-migration and size-exclusion effects can result in severe damage of reservoir permeability near wells, causing injectivity to decline (productivity, in case of production wells).…”

Section: Introductionmentioning

confidence: 99%

Analytical Evaluation of Nanoparticle Application To Mitigate Fines Migration in Porous Media

Moghanloo

Zheng

2016

SPE Journal

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This paper examines an application of the method of characteristics (MOC) to evaluate the effectiveness of nanoparticles to mitigate fines migration in porous media. The positive contribution of nanoparticles to mitigate fines migration was characterized by the increase of maximum retention concentration of fines particles on rock grains through two reactions described in this paper: (1) adsorption of nanoparticles onto the fines/grain surface and (2) increased retention of fines attachment on the pore surface by means of reducing the surface potential between grains and fines. We develop semianalytic MOC solutions for two different scenarios of nanoparticle application to control fines migration:(1) coinjection of nanoparticles with fines suspension into 1D permeable medium and (2) precoating porous medium with nanoparticles before fines injection to evaluate the enhanced capability of porous medium to capture unsettled fines by success of nanoparticle application.A nanoparticle adsorption front, a suspended fines front, and an attached fines front occur in our analytic solution, depending on conditions. The mitigation index (MI) is introduced to evaluate the success of nanoparticles to control fines migration. In addition, the proposed approach provides a fast and reliable method to optimize nanoparticles treatment (nanoparticles concentration and the required amount) to control fines migration. Through quantitative comparison of effluent history and concentration-profile plots, we verify the accuracy of the analytical solutions with both numerical simulations and experimental results. In practice, our analytical approach provides valuable insights into how nanoparticle application can help reduce fines migration in reservoirs suffering from fines-migration problems.

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On the failure of upscaling the single‐collector efficiency to the transport of colloids in an array of collectors

Messina

Tosco

Sethi

2016

Water Resources Research

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Defining the removal efficiency of a filter is a key aspect for colloid transport in porous media. Several efforts were devoted to derive accurate correlations for the single‐collector removal efficiency, but its upscaling to the entire porous medium is still a challenging topic. A common approach involves the assumption of deposition being independent of the history of transport, that is, the collector efficiency is uniform along the porous medium. However, this approach was shown inadequate under unfavorable deposition conditions. In this work, the authors demonstrate that it is not adequate even in the simplest case of favorable deposition. Computational Fluid Dynamics (CFD) simulations were run in a vertical array of 50 identical spherical collectors. Particle transport was numerically solved by analyzing a broad range of parameters. The results evidenced that when particle deposition is not controlled by Brownian diffusion, nonexponential concentration profiles are retrieved, in contrast with the assumption of uniform efficiency. If sedimentation and interception dominate, the efficiency of the first sphere is significantly higher compared to the others, and then declines along the array down to an asymptotic value. Finally, a correlation for the upscaled removal efficiency of the entire array was derived.

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Well impairment by fines migration in gas fields

Cited by 58 publications

References 39 publications

Adiabatic behavior of gas wells due to natural reservoir fines migration: analytical model and CFD study

Adiabatic behavior of gas wells due to natural reservoir fines migration: analytical model and CFD study

Analytical Evaluation of Nanoparticle Application To Mitigate Fines Migration in Porous Media

On the failure of upscaling the single‐collector efficiency to the transport of colloids in an array of collectors

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