凝析气藏循环注气过程流体相态特征

›› 2012, Vol. 33 ›› Issue (6): 1-1.

• 论文 •

凝析气藏循环注气过程流体相态特征

焦玉卫1，谢伟2，邸宝智3，梁涛1，刘立炜2

(1.中国石油勘探开发研究院,北京 100083;2.中国石油塔里木油田分公司,新疆库尔勒 841000;3.中国石油大港油田分公司采油三厂,天津 061023)

出版日期:2019-01-01 发布日期:1905-07-13

Gas Condensate Phase Behavior in Process of Cyclic Gas Injection

JIAO Yuwei1, XIE Wei2, DI Baozhi3, LIANG Tao1, LIU Liwei2

(1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China; 2. Tarim Oilfield Company, PetroChina, Korla, Xinnjiang 841000, China; 3. No.3 Oil Production Plant, Dagang Oilfield Company, PetroChina, Tianjin 061023, China)

Online:2019-01-01 Published:1905-07-13

摘要/Abstract

摘要： 影响露点压力的主要因素是流体组成、温度、多孔介质、非平衡效应等，凝析气藏注气开发过程中受注气波及的影响，流体组成分布在地层中差别较大，是影响地层中露点压力分布的关键因素。凝析气藏注气开发之前，或者衰竭开发过程中，当地层压力高于露点压力时，地层中流体为气相状态，可以近似用一个相态来代表地层中的流体。循环注气开发条件下地层中流体组成的变化极为复杂，流体相态特征随流体组成及压力温度而变化。以状态方程为理论基础，选取某实际凝析气藏有代表性的流体样品，总结了凝析气藏循环注气过程中的3种相态变化趋势，对比了实际取样流体的PVT实验结果，结合实际开发的凝析气藏进行模拟计算，研究了其露点压力在地层中的分布特征。

Abstract: Fluid composition, temperature, porous media, and non?equilibrium effect are the main factors affecting dew?point pressure. In process of gas injection development of gas condensate reservoir, the fluid composition in formation is of great difference in distribution due to sweep efficiency effect. Before cyclic gas injection or during depletion development, the fluid in formation appears gas phase behavior when the formation pressure is higher than the dew?point pressure, and such a fluid could be approximately regarded as a gas phase behavior. Under the cyclic gas injection, the change of the fluid composition in the formation is very complicated, and the fluid phase behavior will change with fluid composition, formation pressure and temperature. Based on the theory of equation of state, the typical fluid samples from a real gas condensate reservoir are selected in this paper, three changing trends of phase behavior in the process of cyclic dry gas injection are presented, and the PVT test results from the real samples are compared. Finally, the distribution characteristics of dew?point pressure is given, integrated with studies of simulation and calculation for the gas condensate reservoir

中图分类号:

TE372

焦玉卫1，谢伟2，邸宝智3，梁涛1，刘立炜2. 凝析气藏循环注气过程流体相态特征[J]. , 2012, 33(6): 1-1.

JIAO Yuwei1, XIE Wei2, DI Baozhi3, LIANG Tao1, LIU Liwei2. Gas Condensate Phase Behavior in Process of Cyclic Gas Injection[J]. , 2012, 33(6): 1-1.

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凝析气藏循环注气过程流体相态特征

Gas Condensate Phase Behavior in Process of Cyclic Gas Injection

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