At Lhss-eos In The Phase Behavior Of The Hydrogen Sulfide Rich Gas Condensate Reservoir Dynamic Analysis In Applied Research

It's a difficult trial test to exploit complicated gas condensate reservoir effectively which highly containing H₂S all the time, a 雷三 o it's significant to develop and consummate acidty gas condensate reservoir exploitation complete technology which can realize long-term settled production.The gas condensate reservoir which highly containing H₂S is a typic sour gas reservoir, the exploitation of it has to get high gas recovery, high condensate oil recovery ,a 雷三 o.the influence of sour gas like H₂S is a most important factor. we must find out a suitable equation-of-state to describle and analyses it's phase behavior and to solve it's typic PVT property in two-phase region. Neither classic nor non-classic equation of state is difficult to describe phase behavior of fluid.It's found out that the existing state equation model can satisfy industry request,it can solve practical problem of this typic sour gas reservoir which highly containing H₂S more effectively through improving on the base of classical equation-of-state.At the same time,the light hydrocarbon recovering problem has to be resolved,making unitization dynamic phase state analyses about gas condensate reservoir which highly containing H2S,letting underground and ground be unified. So, through a great deal of studing,this paper has summarized existing research both home and abroad about gas condensate reservoir which highly containing H2S,developed effective reseach relative to it's specific property.Based on the 雷三 gas reservoir media well 21 and 40,this paper has obtained gas reservoir present exploitation basic data though local phase graphic experimental determination and phase state software package phase diagram matching computation;meanwhile,this paper has established oil-gas system static state and dynamic phase equilibria model.In the dynamic equilibria model, the dynamic phase diagram prediction simulator is the most important part, it has explained the incidence about retrograde condensation to residual fluid and dew-point pressure.Though phase experimental result optimizing matching and fluid thermodynamic parameter field matching, this paper has optimized phase behavior simulation computational equation of state thermodynamic model which is suitable for 雷三 gas reservoir high in sulfur,low in condensate oil system. A advanced four parameters cubic equation of state(LHSS-EOS) has been used to simulate phase behair of a gas condensate reservoir hydrocarbon system which highly containing H₂S, compare LHSS-EOS with other equation, analyses the structure and flexibility of different equation-of -state, the result indicates that LHSS is better than other equation-of state in the critical region phase diagram computation of the gas condensate reservoir hydrocarbon system which highly high H₂S.In addition,the reservoir fluid bulk phase state simulation has proceeded dynamic prediction towards different production life,ground nomal temperature,condensate oil in cryogenic separation tackle and light hydrocarbon production rate,obtained condensate oil in depletion production gas and varied rule about light hydrocarbon production,it has offered reference frame for modification works of light hydrocarbon...