Rotary Gas Separators in High GOR Wells, Field and Lab Tests Comparison

Дроздов, А. Н.; Verbitckiy, V.S.; Dengaev, A.V.; Arseniev, A.A.; Litvinenko, V. A.; Habibbulin, R.; Litvinenko, Konstantin; Elichev, V.A.

doi:10.2118/117415-ms

Cited by 6 publications

(2 citation statements)

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“…Estimated separation efficiencies were compare to those calculated by Drozdov methodology [24] and Marquez correlations [22]. It includes the following: − Total down hole gas separation efficiency: By separate measuring the gas flow rate through the tubing and the annulus, the down hole separation efficiency could be estimated.…”

Section: Testsmentioning

confidence: 99%

High GLR ESP Technologies Comparison, Field Test Results

Bedrin¹,

Хасанов²,

Habibbulin³

et al. 2008

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One of limitations of achieving full potential in pumped wells is due to the presence of excessive free gas at pump intake. The presence of free gas at pump intake has several effects on the pump performance. A reduction in the pressure drop developed by the pump is usually observed when pumping multiphase flow mixtures. This performance reduction sometimes may be severe, resulting in unstable pump operation, production losses and may lead to premature equipment failure.Electric submersible centrifugal pumps (ESP) are commonly used in Russia and other parts of the world for oil production. Currently operators are being required to produce wells under non conventional and challenging operational conditions. One of such conditions is the use of ESP in wells with a high free gas liquid ratio that requires the use of special technology. Under those circumstances it is very important to understand more profoundly the processes of ESP operation as any mistake in the equipment design may have severe economical consequences. One of the crucial information needed is the technical limiting operational conditions for different ESP technologies when handling high gas liquid ratio mixtures.Determination of the technical operational envelope is itself a challenge. Experimental work conducted in Universities and industry research centers are very important for an understanding of the problem and advance of the technologies. But it is difficult to recreate in the lab the same conditions that exist in a well bore. Working with actual fluids at high temperatures and pressures are still challenging conditions to be reproduced in the lab. Therefore theoretical models, experimental correlations manufactures technical guidelines need to be verified against the conditions existing in a real oil well.This work presents the conclusions of the use of state of the art engineering methods describing the reservoir-pumpproduction system to analyze the performance of gas handling technologies based on real well field test results. The field tests were conducted under the New Technologies System project of Rosneft Oil Company. Field tests estimated technical limits for ESP gas handling technologies for up to 75% of volumetric gas fraction at pump intake conditions, as well as confirmed the possibility of oil production enhancement with the tests (the NPV for 11 ESP tested was more than 40 mln. rubles in 2007). It is estimated that more than a 100 wells would benefit from ESP gas handling technologies in Purneftegas alone, yielding significant economic impact for the company, increasing oil production by more than 700 tons/day. Review of gas handling approachesTypically, wells with high GLR are produced by natural flow until conditions require an artificial lift system. At this point, gas lift is usually chosen as an artificial lift method unless some of the free gas can be separated and vented allowing the use of a conventional pump. The performance of ESPs under two phase flow conditions depends on factors such as liquid flow rate, amount of f...

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Section: Testsmentioning

confidence: 99%

High GLR ESP Technologies Comparison, Field Test Results

Bedrin¹,

Хасанов²,

Habibbulin³

et al. 2008

All Days

Self Cite

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“…The key methods to combat the harmful effect of gas include lowering submersible equipment below the dynamic fluid level, using special ESP stages designed for efficient operation in gas-saturated media, installing booster devices (gas separators and gas dispersants), and using ESP sections of different sizes, etc. [36][37][38][39]. These methods have been proven to have a high practical efficiency [40,41].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Oil Production Enhancement Technology Based on Waterflooding Energy Recovery

Lekomtsev¹,

Bakaneev²,

Stepanenko³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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A new integrated oil production enhancement technology based on water-flooding energy recovery is proposed. After providing an extensive review of the existing scientific and technical literature on this subject, the proposed integrated technology is described together with the related process flow diagram, the criteria used to select a target facility for its implementation and the outcomes of the laboratory studies conducted to analyze emulsion formation and separation kinetics. Moreover, the outcomes of numerical simulations performed using Ansys CFX software are also presented. According to these results, using the proposed approach the incremental oil production may reach 1.2 t/day (with a 13% increase) and more, even at low flow rates (less than 10 t/day), thereby providing evidence for the benefits associated with this integrated technology.

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