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Abnormal high pressure gas condensate reservoir phase characteristics experimental study

Author: XianXiaoHong
Tutor: GuoPing
School: Southwest Petroleum University
Course: Oil and Gas Field Development Project
Keywords: Extra high voltage Gas condensate reservoir Phase characteristics analysis Gas deviation factor Calculation methods
CLC: P618.13
Type: Master's thesis
Year: 2010
Downloads: 91
Quote: 0
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Abstract


Gas condensate reservoir is a special gas reservoir, occupies an important position in world gas reservoir development . The high temperature and high pressure gas condensate reservoir found at home and abroad more and more, so it must strengthen the experimental and theoretical studies of the type of gas reservoir fluid phase behavior and physical properties . China 's Tarim Basin gas condensate field development opened up new areas of domestic oil and gas reservoirs , accounting for 40% of the country 's total proven reserves , and has buried deep , high- pressure , the overlying strata complex , the complex nature of fluid characteristics , efficient development is difficult , technical requirements . High even for these pressures UHV type of gas condensate reservoirs , the phase behavior of fluids , especially in the physical properties of the formation fluids , such as deviation factor as an important parameter in the gas field development and gas reservoir engineering studies whether the particularity etc. are worthy of further study . Gas condensate in the original formation conditions showed a single gas phase , the formation pressure is lower than the dew point pressure retrograde condensate , a gas -liquid two- phase , resulting in condensate difficult recovery , development mechanism is very complicated , difficult development , development the mode selection is particularly important. Deviation coefficient is calculated under the conditions of the gas reservoir fluid formation gas reservoir reserves one of the key parameters , the general use of empirical relationships and the corresponding plate or empirical formula to strike . But for the high-pressure gas condensate reservoir , the phase behavior whether particularity the existing bias factor model to calculate the coefficient of deviation viability . There is no experiment given verification . In view of this situation , it is necessary to study abnormal high pressure gas condensate reservoir gas deviation factor from a variety of angles . This article analysis phase state by Tarim Oilfield representative three wells , high-temperature high-pressure phase behavior PVT instrument measured high pressure phase behavior of gas condensate , experimental determination of the coefficient of variation of the ultra-high pressure gas condensate to guide the deep high temperature and high pressure gas reservoir development practices to provide a scientific basis for the development of rational development program .

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