A New-Simple-Effective Analytical Approach to Determine Intermittent Gas Lif Parameters

Tasmi, Tasmi; Rahmawati, Silvya Dewi; Sukarno, Pudjo; Siregar, Simon; Soewono, Edy

doi:10.2118/176211-ms

Cited by 2 publications

(5 citation statements)

References 5 publications

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“…al. [14] has been simplified Liao model with assumed film thickness is constant in tubing and analyzed use approach numerical simulation. Tasmi model has been develop model based on mass and momentum conservation in the tubing-casing annulus and tubing.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…It means gas injection is started and gas enter to the tubing. Figure 2 show combined results of numerical simulation from Tasmi [14] and analysis with approach mathematic for dynamic of pressure in upstream valve. Therefore, dynamic of gas density in upstream valve can be seen on Figure 3.…”

Section: -3mentioning

confidence: 99%

“…If mass in tubing more then mass in valve. Figure 5 show combined results of numerical simulation from Tasmi [14] and analysis with approach mathematic for dynamic of pressure in gas-column.…”

Section: Dynamic Of Pressure In Bottom Of Gas-columnmentioning

confidence: 99%

“…Because the velocity of the gas-column and liquid-column is assumed constant, then gas-column and liquid-column height will be linear. Figure 8 and 9 show combined results of numerical simulation from Tasmi [14] and analysis with approach mathematic for dynamic of the gas-column and liquid-column height. …”

Section: Figure 5 Dynamic Of Pressure In Bottom Of Gas-columnmentioning

confidence: 99%

“…al. [14] with assumed that film thickness is constant. This paper will analyze Tasmi model through approach mathematic.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Mathematical analysis of intermittent gas injection model in oil production

Tasmi¹,

Silvya²,

Pudjo³

et al. 2016

AIP Conference Proceedings

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Abstract. Intermittent gas injection is a method to help oil production process. Gas is injected through choke in surface and then gas into tubing. Gas forms three areas in tubing: gas column area, film area and slug area. Gas column is used to propel slug area until surface. A mathematical model of intermittent gas injection is developed in gas column area, film area and slug area. Model is expanding based on mass and momentum conservation. Using assume film thickness constant in tubing, model has been developed by Tasmi et. al. [14]. Model consists of 10 ordinary differential equations. In this paper, assumption of pressure in gas column is uniform. Model consist of 9 ordinary differential equations. Connection of several variables can be obtained from this model. Therefore, dynamics of all variables that affect to intermittent gas lift process can be seen from four equations. To study the behavior of variables can be analyzed numerically and mathematically. In this paper, simple mathematically analysis approach is used to study behavior of the variables. Variables that affect to intermittent gas injection are pressure in upstream valve and in gas column. Pressure in upstream valve will decrease when gas mass in valve greater than gas mass in choke. Dynamic of the pressure in the gas column will decrease and increase depending on pressure in upstream valve.

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Section: Mathematical Modelmentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

Section: Dynamic Of Pressure In Bottom Of Gas-columnmentioning

confidence: 99%

Section: Figure 5 Dynamic Of Pressure In Bottom Of Gas-columnmentioning

confidence: 99%

“…al. [14] with assumed that film thickness is constant. This paper will analyze Tasmi model through approach mathematic.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mathematical analysis of intermittent gas injection model in oil production

Tasmi¹,

Silvya²,

Pudjo³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

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Increasing productivity by using smart gas for optimal management of the gas lift process in a cluster of wells

Abu-Bakri,

Jafari,

Namdar

et al. 2024

Sci Rep

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In the face of the escalating global energy demand, the challenge lies in enhancing the extraction of oil from low-pressure underground reservoirs. The conventional artificial gas lift method is constrained by the limited availability of high-pressure gas for injection, which is essential for reducing hydrostatic bottom hole pressure and facilitating fluid transfer to the surface. This study proposes a novel ‘smart gas’ concept, which involves injecting a gas mixture with an optimized fraction of CO2 and N2 into each well. The research introduces a dual optimization strategy that not only determines the optimal gas composition but also allocates the limited available gas among wells to achieve multiple objectives. An extensive optimization process was conducted to identify the optimal gas injection rate for each well, considering the limited gas supply. The study examined the impact of reducing available gas from 20 to 10 MMSCFD and the implications of water production restrictions on oil recovery. The introduction of smart gas resulted in a 3.1% increase in overall oil production compared to using natural gas. The optimization of smart gas allocation proved effective in mitigating the decline in oil production, with a 25% reduction in gas supply leading to only a 10% decrease in oil output, and a 33% reduction resulting in a 26.8% decrease. The study demonstrates that the smart gas approach can significantly enhance oil production efficiency in low-pressure reservoirs, even with a substantial reduction in gas supply. It also shows that imposing water production limits has a minimal impact on oil production, highlighting the potential of smart gas in achieving environmentally sustainable oil extraction. Furthermore, the implementation of the smart gas approach aligns with global environmental goals by potentially reducing greenhouse gas emissions, thereby contributing to the broader objective of environmental sustainability in the energy sector.

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A New-Simple-Effective Analytical Approach to Determine Intermittent Gas Lif Parameters

Cited by 2 publications

References 5 publications

Mathematical analysis of intermittent gas injection model in oil production

Mathematical analysis of intermittent gas injection model in oil production

Increasing productivity by using smart gas for optimal management of the gas lift process in a cluster of wells

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