The effect of gas-condensate reservoir depletion stages on gas injection and the importance of the aerosol state of fluids in this process

Effective “Vaporizer” for Recovering Retrograde Hydrocarbon Condensate from a Gas-Condensate Reservoir

“…12,15 Nevertheless, successful design and implementation of enhanced condensate recovery schemes require accurate prediction of the compositional effects that control the local vaporization/displacement efficiency. In line with these conclusions, and also results which were obtained in the earlier works 4,14,15 in this paper, we intended to find out a way of improving the effectiveness of "vaporiser" for the recovering trapped retrograde condensate in the formation, which is left after primary production. To this purpose, this paper performed an experimental investigation into this phenomenon as it is problematic during mathematical modelling.…”

“…Some of the thermodynamic features of this "phase" are accurately explained by us in the paper. 4 The state was treated as a colloidal-aerosol system and highlighted some of the physical chemistry aspects. We decided to bring up this specific "phase" or state for discussion again because it could impact on reservoir development and exploitation if the scientific mechanisms are not investigated and understood.…”

“…In the paper 4 we examined the process of the liquid or fog forming in the gas-condensate mixture. The fluid was investigated as a colloidal structure in that paper.…”

“…3 The accumulated condensate bank also changes the phase composition, which in turn reshapes the phase diagram and other properties of reservoir fluid. 4 Results from the case study [5][6][7] showed that the impact of condensate banking would be severe for these reservoirs if the physical processes expected in these reservoirs are not correctly modelled.…”

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

“…Təbii rejimdə istismar olunan qaz-kondensat yataqlarında faza çevrilmələri səbəbindən yaranan fəsadlar (Брусиловский, 2002; Абасов и др., 2013; Фаталиев, 2017) nəinki quyunun işini pisləşdirir, eyni zamanda, həm dəquyu ilə layın vahid hidrodinamiki sistem kimi işləməsinə kəskin təsir göstərir (Ibemere et al, 2016;Li et al, 2016). Aparılmış tədqiqatlara (Abbasov, Fataliyev, 2016) əsasən məlum olur ki, tükənməyə işləyən əksər qaz-kondensat yataqlarında lay təzyiqinin retroqrad kondensasiya təzyiqindən hətta 5-7% aşağı düşməsi belə, layda böyük miqdarda kondensat çökməsinə səbəb olur və yatağın məhsuldarlıq əmsalını əhəmiyyətli dərəcədə azaldır. Təsadüfi deyil ki, dünyanın bir çox böyük neft-qaz-kondensat yataqlarında məhsuldarlığı yalnız əlavə tədbirlərin hesabına optimallaşdırmaq mümkün olmuşdur (Аббасов и др.,2013; Ghiasi et al, 2014;Indo et al, 2015;Li et al, 2016).…”