Gas Lift System

Elldakli, Fathi

doi:10.23880/ppej-16000121

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…The continuous injection is like natural elevation, it can be treated as an extension of the natural flow process, according to the displacement of the fluid towards the surface, the pressure of the fluid column reduces, expanding the gas in the fluid from the injection point to the surface. This way, the increase of the gas-liquid ratio will reduce its density, reducing the pressure losses along the column (ELLDAKLI, 2017).…”

Section: Lift Gasmentioning

confidence: 99%

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Prospecting Papers and Patents of Gas Lift Valves Technology

Rodrigues

Silva²,

Silva³

2021

Int J Innov Educ Res

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Between the phases of oil exploration and production, there is this oil transfer through natural or artificial elevation method. When this method is natural, the pressure in the reservoir is sufficiently high and the fluids in it can emerge to the surface, but when this pressure is insufficient, the fluids do not reach the surface without the use of artificial lifting methods. Among the struggles to be solved by engineering, there is the optimization of the geometry of the lift gas valves (VGL) and the sealing material. In this context, this article presents the prospecting of papers and patents related to the technological advances of VGL published in the last five years (2016 to 2020) and as a research contribution, there is the identification of solutions regarding the aforementioned optimization. The ScienceDirect, Scopus, CAPES Periodical Portal, and Web of Science databases were used, and the patent search in the database of the European Patent Office (EPO), Espacenet. The results showed that the number of papers published in this area is low, showing that there have been more publications on the subject in the last three years. In addition, China and the United States of America are the countries with the highest number of patents granted in the years surveyed, and the two North American inventors have the greatest number of inventions.

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Section: Lift Gasmentioning

confidence: 99%

“…For Elldakli (2017), the intermittent lift gas injection is based on the periodic displacement of liquids, called fluid strokes, from the pipeline by injection of high-pressure gas into the wellbore. In addition, a valve that has a pre-defined time performs the control, following injection and rest cycles.…”

Section: Lift Gasmentioning

confidence: 99%

Prospecting Papers and Patents of Gas Lift Valves Technology

Rodrigues

Silva²,

Silva³

2021

Int J Innov Educ Res

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“…Producing at lower rates is not economical. With regard to the static pressure of the reservoir, the gas-lift method is the most appropriate for well X [6,18]. Continuous gaslift is an artificial-lift method that consists of injecting gas through the producing well to lower gravity pressure losses in order to reduce the pressure at the bottom of the well [19].…”

Section: Introductionmentioning

confidence: 99%

Design of continuous gas-lift for a dead well and step-up of its productivity

Matateyou

Njeudjang

Dongmo

et al. 2022

PVJ

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The present paper aims to design a continuous gas-lift system in order to activate the dead well X and optimise the recovery of hydrocarbons by gas injection. The data taken into account are those of the reservoir and the well. All the simulation operations and the well diagram are carried out with the PIPESIM 2017 2.0 software. Moreover, the nodal analysis of the dead well X is carried out by finding the injection pressure of the gas in the well. The number of valves to be installed, the optimal injection heights and the flow rates received by each valve are also included in the gas-lift device. Then the evaluation of the system performance as well as the sensitivity analysis are carried out to make it possible to fix the optimal flow rate of production. The results obtained show that for a continuous gas injection of 3 million standard ft3 per day (MMscf/d) per valve into the well with a wellhead pressure of 2,500 psi and an optimal flow rate of 2,718 standard barrels per day (STB/d), a profitability of USD 182,887,219 is obtained. In this field, this design can be applied to all wells having a production tube of 2.5 inches inside diameter. On the other hand, wells with different diameters will require a new evaluation.

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“…In deep water gas-lift oil well processes [25], the downhole pressure is an important variable to ensure safety and to provide useful information for management and oil recovery of the oil field [17]. It can be used by anti-slugging control systems or to optimize the costs of the oil production.…”

Section: Introductionmentioning

confidence: 99%

Including steady-state information in nonlinear models: an application to the development of soft-sensors

Freitas¹,

Barbosa²,

Aguirre³

2020

Preprint

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When the dynamical data of a system only convey dynamic information over a limited operating range, the identification of models with good performance over a wider operating range is very unlikely. To overcome such a shortcoming, this paper describes a methodology to train models from dynamical data and steady-state information, which is assumed available. The novelty is that the procedure can be applied to models with rather complex structures such as multilayer perceptron neural networks in a bi-objective fashion without the need to compute fixed points neither analytically nor numerically. As a consequence, the required computing time is greatly reduced. The capabilities of the proposed method are explored in numerical examples and the development of soft-sensors for downhole pressure estimation for a real deep-water offshore oil well. The results indicate that the procedure yields suitable soft-sensors with good dynamical and static performance and, in the case of models that are nonlinear in the parameters, the gain in computation time is about three orders of magnitude considering existing approaches.

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Gas Lift System

Cited by 8 publications

References 8 publications

Prospecting Papers and Patents of Gas Lift Valves Technology

Prospecting Papers and Patents of Gas Lift Valves Technology

Design of continuous gas-lift for a dead well and step-up of its productivity

Including steady-state information in nonlinear models: an application to the development of soft-sensors

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