Effects of Entrained Air on the Performance of a Centrifugal Pump : 1st Report, Performance and Flow Conditions

Murakami, Mitsukiyo; Minemura, Kiyoshi

doi:10.1299/jsme1958.17.1047

Cited by 116 publications

(61 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The same trend of deterioration observed by Murakami and Minemura [4,5] in volute-type centrifugal pumps was confirmed by Lea and Bearden [3] in ESPs. Lea and Bearden's [3] experimental results indicated the importance of the intake pressure and liquid flow rate, as well as pump geometry.…”

Section: Literature Reviewsupporting

confidence: 80%

“…Inspired by studies in Loss of Coolant Accidents (LOCA) in nuclear industry, Murakami and Minemura [4,5] performed the first comprehensive study on the effect of entrained gas in centrifugal pumps. Murakami and Minemura [4,5] demonstrated the pump head is deteriorated continuously as the air volumetric flow is increased.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Murakami and Minemura [4,5] demonstrated the pump head is deteriorated continuously as the air volumetric flow is increased.…”

Section: Literature Reviewmentioning

confidence: 99%

See 2 more Smart Citations

Experimental studies on the effect of the number of stages on the performance of an electrical submersible pump in two-phase flow conditions

Salehi¹,

Gamboa²,

Prado³

2013

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

The objective of this research is to study experimentally the effect of number of stages on the overall performance of a multistage ESP. Therefore, a series of experiments injecting gas at certain stage and monitoring the pressure increment on stages downstream from the injection point are conducted at different inlet pressure, and rotational speed. The experimental result reveals that two-phase performance of a single stage does not directly represent the two-phase ESP overall performance. However, a strong relationship between two-phase stage performance, number of stages and the pump overall performance exists.Results also show that increasing the number of stages extends the operating region in which every stage equally contributes on the overall pump performance. This region is bracketed by a critical gas quality that also varies with the increase of the number of stages. Thus, the prediction of the number of stage varies depending on the gas quality. At low gas quality the serial pump rule is suitable for practical application purpose. But, this rule may underestimate the number of stages at higher gas quality in which the serial pump rule is no longer applicable.

show abstract

Section: Literature Reviewsupporting

confidence: 80%

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Experimental studies on the effect of the number of stages on the performance of an electrical submersible pump in two-phase flow conditions

Salehi¹,

Gamboa²,

Prado³

2013

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

show abstract

“…The pioneering experimental studies conducted by Murakami and Minemura [31,32] investigated centrifugal pump performance with gas entrainment. By employing a semi-opened impeller pump with a transparent casing, they experimentally observed the behavior of entrained air bubbles.…”

Section: Two-phase Testsmentioning

confidence: 99%

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

Zhu

Zhang

2018

Energies

View full text Add to dashboard Cite

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.

show abstract

“…Murakami and Minemura [1] used a semi-open type pump with transparent casing. The observed flow patterns were recorded photographically, and bubble diameter measurements could be made inside the impeller.…”

Section: Introductionmentioning

confidence: 99%

The development and water-air two-phase test results of an electrical submersible pump visualization prototype

Trevisan

Prado

2010

WIT Transactions on Engineering Sciences

View full text Add to dashboard Cite

Artificial lift systems are extensively used in the petroleum industry in order to enhance or even initiate the production of oil wells that present insufficient energy to produce naturally. The Electrical Submersible Pump (ESP) is one of the many existing artificial lift techniques and consists of assembling several diffuser type centrifugal pumps in series.It is common in petroleum field applications to have an inflow of natural gas into the pump intake, which compromises pump performance and reliability. Trying to better understand the interaction between the gas and liquid inside centrifugal pumps is still a challenge and the current investigation tries to help understand this subject.This research describes the development of a visualization prototype built using original ESP components, applying minimal mechanical and geometrical modifications, with the intent of acquiring visual evidence of the flow patterns that occur inside the pump. Because of these minimal changes to the original pump geometry, the prototype was proven to operate according to the original pump catalogue performance, implying that its hydraulic behaviour was maintained.Water-air two phase experiments were conducted at different rotational speeds (15, 20, 30 Hz) and non-slip void fractions (up to 5%) while the liquid rate was kept constant at 60% of the maximum rate at the defined shaft speed. High speed video footage was gathered, as well as differential pressure measurements.

show abstract

Effects of Entrained Air on the Performance of a Centrifugal Pump : 1st Report, Performance and Flow Conditions

Cited by 116 publications

References 0 publications

Experimental studies on the effect of the number of stages on the performance of an electrical submersible pump in two-phase flow conditions

Experimental studies on the effect of the number of stages on the performance of an electrical submersible pump in two-phase flow conditions

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

The development and water-air two-phase test results of an electrical submersible pump visualization prototype

Contact Info

Product

Resources

About