Gas-Condensate Recovery For The Low Permeable Sands, Gas Cycling Efficiency

Kolbikov, Sergey

doi:10.2118/136380-ms

Cited by 6 publications

(1 citation statement)

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“…It was noted practically in all publications [3,4,5,6] that preliminary cycling (full or partial) is most effective. For calculations we accepted producer-to-injector ratio equal to 1:1.…”

Section: Scenarios Of Partial Gas Cyclingmentioning

confidence: 99%

Evaluation of cycling scenarios for Achimov formations of Urengoyskoye gas-condensate field

Yushkov

Merkushin

2015

SPE Russian Petroleum Technology Conference

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The paper summarizes the results of simulation of gas reinjection scenarios (ЉcyclingЉ) for gas condensate deposits in the deep Achimov formation of Urengoyskoye Field having 1 md permeability and pressure of 600 bar. The compositional simulation runs were performed for nominal element of one of the Achimov stratum. After that, the technological feasibility of each option evaluated, using conceptual design of gas compression system. An extensive feasibility study of cycling options with the analysis of the sensitivity of the results to macroeconomic scenarios was performed, as well as the different ways to determine the effectiveness of the projects. The results of calculations confirmed the low economic efficiency of cycling.During the works we have developed the linkages between simulation results of the flows in the reservoir and wells with accompanying infrastructure parameters and the economy as a single integrated model. To do this, a separate post-processing module was developed, which (a) determines additional parameters of the gas infrastructure required for gas re-injection and (b) provides the economic efficiency evaluation with the ability to use a variety of macroeconomic scenarios. These results can be used to justify the methods and technologies for the development of other gas condensate deposits.

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“…It was noted practically in all publications [3,4,5,6] that preliminary cycling (full or partial) is most effective. For calculations we accepted producer-to-injector ratio equal to 1:1.…”

Section: Scenarios Of Partial Gas Cyclingmentioning

confidence: 99%

Evaluation of cycling scenarios for Achimov formations of Urengoyskoye gas-condensate field

Yushkov

Merkushin

2015

SPE Russian Petroleum Technology Conference

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An Experimental Study on Huff-n-Puff Gas Injection to Enhance Condensate Recovery in Shale Gas Reservoirs

Meng¹,

Yu²,

Sheng³

2015

Proceedings of the 3rd Unconventional Resources Technology Conference

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Mitigation of the Effects of Condensate Banking: A Critical Review

Sayed

Al-Muntasheri

2016

SPE Production &Amp; Operations

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With production from gas/condensate reservoirs, the flowing bottomhole pressure of the production well decreases. When the flowing bottomhole pressure decreases below the dewpoint, condensate accumulates near the wellbore region and forms a condensate bank. This results in a loss of productivity of both gas and condensate, which becomes more serious in intermediate-and low-permeability gas/condensate reservoirs, where the condensate bank reduces both the gas permeability and the well productivity.Several techniques have been used to mitigate this problem. These methods include:• Use of solvents and wettability-alteration chemicals to reduce the impact of condensate blockage • Gas cycling and injection of nitrogen and supercritical carbon dioxide as pressure-maintenance methods • Drilling horizontal wells, hydraulic fracturing, and acidizing to improve the well productivity Gas cycling aims to keep the reservoir pressure greater than the dewpoint pressure to reduce the condensation phenomena. The limited volumes of gas that can be recycled in the reservoir can hinder the application of this method. For an ideal gas-cycling process, the volume of the gas injected into the reservoir will be larger than the total gas that can be produced from such a reservoir. Other approaches are the drilling of horizontal wells and hydraulic fracturing, during which the pressure drop around the wellbore region is lowered to allow for a longer production time, with only single-phase gas flow to the wellbore. These approaches are costly because they require drilling rigs. Another technique is the use of solvents, which shows good treatment outcomes, but the durability is a questionable issue in these treatments. Moreover, wettability alteration needs to be approached very carefully so as not to cause permanent damage to the reservoir. The use of fluorinated polymers and surfactants dissolved in alcohol-based solvents for wettability-alteration treatments was reported in many studies.Each method has its own advantages and disadvantages, and can be applied under certain conditions. This paper presents all of these methods, along with their advantages and disadvantages and description of some of their field applications and case studies.

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Gas-Condensate Recovery For The Low Permeable Sands, Gas Cycling Efficiency

Cited by 6 publications

References 0 publications

Evaluation of cycling scenarios for Achimov formations of Urengoyskoye gas-condensate field

Evaluation of cycling scenarios for Achimov formations of Urengoyskoye gas-condensate field

An Experimental Study on Huff-n-Puff Gas Injection to Enhance Condensate Recovery in Shale Gas Reservoirs

Mitigation of the Effects of Condensate Banking: A Critical Review

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