凝析气藏单井油气界面预测方法研究
Study on Prediction Methods for Single Well Oil and Gas Interface in Gas Condensate Reservoir
浏览(1753) 下载(12)
- 引用格式:
-
熊钰,周路遥,余翔.凝析气藏单井油气界面预测方法研究[J].天然气与石油,2015,33(2):0.doi:
Xiong Yu, Zhou Luyao, Yu Xiang.Study on Prediction Methods for Single Well Oil and Gas Interface in Gas Condensate Reservoir[J].Natural Gas and Oil,2015,33(2):0.doi:
- DOI:
- 作者:
- 熊 钰1 周路遥1 余 翔2
Xiong Yu, Zhou Luyao, Yu Xiang
- 作者单位:
- 1. 西南石油大学石油与天然气工程学院，2. 中国石油天然气集团公司西南油气田分公司蜀南气矿
1.School of Petroleum and Naturat Gas Engineering, Southwest Petroleum University; 2.Shunan Gas Production Plant, PetroChina Southwest Oil & Gas Field Company
- 关键词:
- 凝析气藏；组分梯度；饱和压力；油气界面
Condensate gas reservoir; Compositional gradient; Saturation pressure; GOC
- 摘要:
- 凝析气藏储层中的流体由于压力和温度的影响，往往呈现出组分随深度变化的现象，即组分梯度特征，确定凝析气藏油气界面位置对凝析气藏的合理开发具有重要意义。国内外研究认为，温度变化对组分梯度影响较小，可以忽略。因此，在推导等温组分梯度理论模型的基础上，分析了安岳气田Y 101-53-X 2井流体组分的分布情况，并利用饱和压力与油气藏压力对比图版法确定其油气界面位置约在油藏深度2 310 m。结果表明：该理论模型能准确预测凝析气藏单井油气界面位置。
Due to the effect of pressure and temperature, formation fluids in condensate gas reservoirs often present the phenomenon that components change with their burial depth, which is called as compositional gradient. Determination of the GOC in condensate gas reservoirs is significant for reasonable development of such reservoirs. Study at home and abroad shows that effect of temperature variation on the compositional gradient is not obvious and can be ignored. Deduced is the isothermally theoretical model of the hydrocarbon compositional gradient, analyzed is the distribution of formation fluids in well Y101-53-X2 of Anyue Gas Field and used is the comparison chart method of saturation pressure and reservoir pressure to determine that the GOC of well Y101-53-X2 is about 2310m under the ground. Result shows that this theoretical model can accurately estimate GOC of single well in condensate gas reservoir.
