Comprehensive experimental study on the sand retention media of pre-filled sand control screens

Ma, Chengyun; Deng, Jingen; Dong, Xingliang; Sun, Dongzheng; Feng, Zhe; Yan, Xinjiang; Hui, Cheng; Tian, Deliang

doi:10.1080/02726351.2019.1687628

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…The packing efficiency of the gravel is an essential parameter in unconsolidated PPGS 52 . A packing efficiency approaching the theoretical upper limit as closely as possible is preferred.…”

Section: Methodsmentioning

confidence: 99%

“…The packing efficiency of the gravel is an essential parameter in unconsolidated PPGS. 52 A packing efficiency approaching the theoretical upper limit as closely as possible is preferred. However, a high packing efficiency can easily lead to a greater contact between the gravel and the outer protective shroud according to previous analysis.…”

Section: Numerical Model Setupmentioning

confidence: 99%

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Numerical simulations of sand‐screen performance in unconsolidated prepacked gravel screen

Ma,

Dou,

Deng

et al. 2023

Energy Science & Engineering

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This work addresses the ongoing challenge of optimizing sand control screens, attributed to a limited understanding of screen blocking. A novel one‐way computational fluid dynamics and discrete element method (CFD–DEM) coupling technique is presented to analyze the structural parameters of unconsolidated prepacked gravel screens (PPGS). CFD–DEM involves systematically investigating the width of the punched slot on the outer protective screen, the size of the gravel, and the efficiency of gravel packing to improve the antiblocking capability of unconsolidated PPGS. Results from numerical simulations reveal that under conditions of effective sand control, the amount of sand entering the gravel layer to the bridge (referred to as the sand pass rate) is positively correlated with the antilocking ability (referred to as oil productivity index) for unconsolidated PPGS. The efficiency of gravel packing has the most substantial effect on the antilocking performance of unconsolidated PPGS. The data suggest that appropriately reducing the efficiency of gravel packing can enhance the antilocking capability of unconsolidated PPGS. To design an unconsolidated PPGS with enhanced antilocking capability, the efficiency of gravel packing be determined first. Then, the gravel size is designed based on this efficiency, and the width relative to the gravel size is decided. This contemporary design principle diverges considerably from previous design principles for gravel‐packed sand control screens. Supporting validation experiments agree with simulation outcomes, suggesting the established one‐way CFD–DEM coupling method in this paper is suitable for analyzing the plugging mechanism of unconsolidated PPGS. Thus, the CFD–DEM coupling method improves the design of such screens for improved antiblocking performance.

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Section: Methodsmentioning

confidence: 99%

Section: Numerical Model Setupmentioning

confidence: 99%

Numerical simulations of sand‐screen performance in unconsolidated prepacked gravel screen

Ma,

Dou,

Deng

et al. 2023

Energy Science & Engineering

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“…Li et al [10] reported different injection pressures for various SAGD projects in Alberta, ranging from 2000 to 5000 kPa, depending on the reservoir depth. As the unconsolidated oil-bearing sands are inherently loose, SAGD wells require the implementation of stand-alone screens to support the wellbore and control sand production [11][12][13][14][15][16]. The slotted liner is currently widely used in Canada's SAGD process due to its economy and adequate mechanical integrity [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…From the experimental tests using a single-slot coupon, Coberly found that the aperture size should be smaller than two times of the formation sand's D10 (the sieve size that retains 10% of the material mass) to form a stable sand bridge. Subsequently, several researchers investigated and proposed the design criteria of the As the unconsolidated oil-bearing sands are inherently loose, SAGD wells require the implementation of stand-alone screens to support the wellbore and control sand production [11][12][13][14][15][16]. The slotted liner is currently widely used in Canada's SAGD process due to its economy and adequate mechanical integrity [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, proper design criteria are needed for the slotted liner to restrict sand production and maintain the flow performance at a desirable level for the SAGD well lifecycle [25]. As the unconsolidated oil-bearing sands are inherently loose, SAGD wells require the implementation of stand-alone screens to support the wellbore and control sand production [11][12][13][14][15][16]. The slotted liner is currently widely used in Canada's SAGD process due to its economy and adequate mechanical integrity [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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An Improved Set of Design Criteria for Slotted Liners in Steam Assisted Gravity Drainage Operation

et al. 2020

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Slotted liners are widely used in steam-assisted gravity drainage (SAGD) wells to control sand production and sustain wellbore productivity. The slotted liner can provide desirable performance when appropriately designed. A literature review indicates a limited number of studies that offer design criteria specifically for SAGD wells. Moreover, past criteria seem to neglect some key factors, which may lead to inadequate slot design. This paper proposes a set of graphical design criteria for slotted liners in SAGD production wells, using prepacked sand retention testing (SRT) data. The SRT is designed to incorporate several essential factors that are not present in the past design criteria, such as slot density, steam breakthrough, and particle size distribution (PSD). The proposed design criteria are presented graphically for normal and aggressive conditions, where the aggressive condition accounts for the potential occurrence of the steam breakthrough. It is found that the upper bound of the design window is substantially lower for the aggressive condition due to the higher sand production after the steam breakthrough. The design criteria also indicate that the slotted liner is suitable only for the formations with low fines content.

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The Influence of Structural Parameters on the Plugging of Prepacked Gravel Screens

Deng

Feng

et al. 2021

Rock Mech Rock Eng

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Comprehensive experimental study on the sand retention media of pre-filled sand control screens

Cited by 9 publications

References 20 publications

Numerical simulations of sand‐screen performance in unconsolidated prepacked gravel screen

Numerical simulations of sand‐screen performance in unconsolidated prepacked gravel screen

An Improved Set of Design Criteria for Slotted Liners in Steam Assisted Gravity Drainage Operation

The Influence of Structural Parameters on the Plugging of Prepacked Gravel Screens

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