Brazil Field Experience of ESP Performance with Viscous Emulsions and High Gas Using Multi-Vane Pump MVP and High Power ESPs

Barrios, Lissett; Rojas, Marisela; Monteiro, G.; Sleight, N.

doi:10.2118/185141-ms

Cited by 11 publications

(7 citation statements)

References 3 publications

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“…The pump industry uses a more practical expression for the specific speed N S as below: (2) where N, q and h are rotational speed (rpm), flow rate (gpm) and pump head (ft), respectively. Based on Equation (2), centrifugal pumps are categorized into radial, mixed and axial types.…”

Section: Boosting Pressure Of Centrifugal Pumpmentioning

confidence: 99%

“…0 h q N N q  (2) where N, q and h are rotational speed (rpm), flow rate (gpm) and pump head (ft), respectively. Based on Equation (2), centrifugal pumps are categorized into radial, mixed and axial types. The radial pumps usually fall in the range 500 < NS < 1800, while the mixed pumps can reach a maximum NS = 4500.…”

Section: Boosting Pressure Of Centrifugal Pumpmentioning

confidence: 99%

“…Globally, there are more than 100,000 ESP installations, making ESP the second most widely used artificial lift method in oil production, but the first based on the produced amount [1,2]. ESPs excel in producing crude oils at very high flow rate, but they have to be operated within a narrow application window.…”

Section: Introductionmentioning

confidence: 99%

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A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Zhu

Zhang

2018

Energies

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As the second most widely used artificial lift method in petroleum production (and first in produced amount), electrical submersible pump (ESP) maintains or increases flow rate by converting kinetic energy to hydraulic pressure of hydrocarbon fluids. To facilitate its optimal working conditions, an ESP has to be operated within a narrow application window. Issues like gas involvement, changing production rate and high oil viscosity, greatly impede ESP boosting pressure. Previous experimental studies showed that the presence of gas would cause ESP hydraulic head degradation. The flow behaviors inside ESPs under gassy conditions, such as pressure surging and gas pockets, further deteriorate ESP pressure boosting ability. Therefore, it is important to know what parameters govern the gas-liquid flow structure inside a rotating ESP and how it can be modeled. This paper presents a comprehensive review on the key factors that affect ESP performance under gassy flow conditions. Furthermore, the empirical and mechanistic models for predicting ESP pressure increment are discussed. The computational fluid dynamics (CFD)-based modeling approach for studying the multiphase flow in a rotating ESP is explained as well. The closure relationships that are critical to both mechanistic and numerical models are reviewed, which are helpful for further development of more accurate models for predicting ESP gas-liquid flow behaviors.

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Section: Boosting Pressure Of Centrifugal Pumpmentioning

confidence: 99%

Section: Boosting Pressure Of Centrifugal Pumpmentioning

confidence: 99%

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A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Zhu

Zhang

2018

Energies

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“…This viscosity depends essentially on the morphology of the emulsion and several parameters, such as the volume fraction of the coexisting phases, the size of the droplets of the dispersed phase, the shear stress, temperature, and the presence or not of a surfactant [ 3 , 4 , 5 , 6 ]. The size of the droplets, as well as the presence of a surfactant, affect the stability of the emulsion, where it has been shown experimentally that the more stable the emulsion, the greater its viscosity [ 7 , 8 , 9 ]. Pointing out that high shear stress leads to droplet fragmentation and small droplet diameters, resulting in a stable emulsion [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Assessment of the Hydrodynamic Behavior of a Volute Centrifugal Pump Handling Emulsion

Achour

Specklin

Belaidi

et al. 2022

Entropy

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Although emulsion pumping is a subject of growing interest, a detailed analysis of the fluid dynamic phenomena occurring inside these machines is still lacking. Several computational investigations have been conducted to study centrifugal pumps carrying emulsion by analyzing their overall performance, but no studies involved the rheological behavior of such fluids. The purpose of this study is to perform a computational analysis of the performance and flow characteristics of a centrifugal pump with volute handling emulsions and oil–water mixtures at different water cuts modeled as a shear-thinning non-Newtonian fluid. The studied pump consists of a five-bladed backward curved impeller and a volute and has a specific speed of 32 (metric units). The rheological properties of the mixtures studied were measured experimentally under a shear rate ranging from 1 s−1 to 3000 s−1 and were fitted to conventional Cross and Carreau effective viscosity models. Numerical results showed the flow topology in the pump is directly related to the viscosity plateau of the pseudoplastic behavior of emulsions. The viscosity plateau governs pump performance by influencing the loss mechanisms that occur within the pump. The larger the ν∞, the less recirculation loss the fluid experiences, and conversely, the smaller the value of ν0, the less friction loss the fluid experiences.

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“…These downhole pumps are used to convert kinetic energy into hydraulic pressure head and exhibit high efficiency. Globally, the electrical submersible pump (ESP) systems are the second most extensively applied for artificial lift and are used in more than 90 percent of the oil production wells and high-volume production [3][4][5]. ESP performance is affected by many factors including gas involvement, rotational speed, bubble size, fluid density and viscosity [6,7].…”

Section: Introductionmentioning

confidence: 99%

Research Progress and Prospects of Multi-Stage Centrifugal Pump Capability for Handling Gas–Liquid Multiphase Flow: Comparison and Empirical Model Validation

et al. 2021

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The working capability of multi-stage pumps, such as electrical submersible pumps (ESPs) handling multiphase flow, has always been a big challenge for petroleum industries. The major problem is associated with the agglomeration of gas bubbles inside ESP-impellers, causing pump performance degradation ranging from mild to severe deterioration (surging/gas pockets). Previous literature showed that the two-phase performance of ESPs is greatly affected by gas involvement, rotational speed, bubble size, and fluid viscosity. Thus, it is necessary to understand which parameter is actually accountable for performance degradation and different flow patterns in ESP, and how it can be controlled. The present study is mainly focused on (1) the main parameters that impede two-phase performance of different ESPs; (2) comparison of existing empirical models (established for two-phase performance prediction and surging initiation) with our single-stage centrifugal pump results to determine their validity and working-range; (3) gas-handling techniques applied to enhance the multiphase performance of ESPs. Firstly, it aims at understanding the internal flow mechanism in different ESP designs, followed by test studies based on empirical models, visualization techniques, bubble-size measurements, and viscosity analysis. The CFD-based (computational fluid dynamics) numerical analysis concerning multiphase flow is described as well. Furthermore, gas-handling design methods are discussed that are helpful in developing the petroleum industry by enhancing the multiphase performance of ESPs.

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Brazil Field Experience of ESP Performance with Viscous Emulsions and High Gas Using Multi-Vane Pump MVP and High Power ESPs

Cited by 11 publications

References 3 publications

A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Numerical Assessment of the Hydrodynamic Behavior of a Volute Centrifugal Pump Handling Emulsion

Research Progress and Prospects of Multi-Stage Centrifugal Pump Capability for Handling Gas–Liquid Multiphase Flow: Comparison and Empirical Model Validation

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