№ 2, 2018

Liquid and gas relation in dispersed reservoir fluid and its importance in exploitation of gas-condensate deposits

Fataliyev V.M., Salimova S.A., Maharramova S.D., Gorshkova E.V.

Institute of Oil and Gaz, F.Amirov Str., 9, Baku, Azerbaijan, AZ1000: fatavm@bp.com

Summary. In this paper, considering gas-condensate mixture researched as dispersed system, the effect of grouped components, fractural compositions and liquid-gas ratio on the fluid dispersion and condensation processes were shown in line with importance of these factors at development and exploitation of gas condensate deposits. The analysis of some thermodynamic data from different deposits revealed that if the liquid part of the gas-condensate system consists of relatively light components or mixture is composed of the better soluble liquid and gas components, then the dispersion can be processed in low pressure condition at a certain temperature. In this case, stability of the dispersed reservoir fluid and its single-phase state could prolong longer during depletion regime. Besides, it was found out that the condensate recovery factor is low when the condensate ratio of the reservoir is relatively high. This is due to the increase of proportion between liquid and gas volumes causing poor dispersion process of volume liquid phase in dispersed medium. The results were proved by experimental studies and also, some of the application problems of depletion process were investigated.

Keywords: retrograde condensation, disperse system, fractional composition, single-phase condition, condensate recovery factor

 

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doi:10.33677/ggianas20180200017

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