凝析气藏生产过程反凝析特征评价方法.pdfVIP

第 32 卷 增刊 石 油 钻 采 工 艺 Vol. 32 Sup. 2010 年 11 月 OIL DRILLING PRODUCTION TECHNOLOGY Nov. 2010 1000 – 7393 2010 S0 – 0045 – 05 文章编号： （ ） 凝析气藏生产过程反凝析特征评价方法 张　云　赵习森　张　艾　李建伟　何云峰 （中石化西北油田分公 司雅克拉采气厂，新疆库车　842017） 摘要： 雅克拉 －大涝坝凝析 气田地露压差小，边底水能量弱。采用衰竭式开发极 易发生反凝析现 象。 目前不能对凝析 气 藏生产过程 中反凝析特征进行识别，从 而影响深层凝析 气藏的稳产期和最终凝析油采收率。为此建立 了凝析 气藏反凝析特征 综合识别方法。该方法综合考虑 了 11 个能够反映凝析气藏反凝析特征的动静 态参数。运用该方法，比较合理地解释 了雅克拉、 大涝坝凝析 气藏不同于常规凝析 气藏的生产特征 ，认为 出现这种特征与生产初期反凝析液量少及产量高等 因素有关。在此基 础上进一步明确 了该气藏生产阶段及其生产规律 。 关键词：凝析气藏；反凝析特征；参数；评价方法 中图分类号：TE258　　　文献标识码：A Evaluation method for retrograde condensation characteristics in the development of condensate gas reservoir ZHANG Yun, ZHAO Xisen, ZHANG Ai, LI Jianwei, HE Yunfeng , , , Yakela Gas Production Plant of Northwest Oilf ield Comp any SIN OPE C Kuqa 842017 China （ ） Abstract: Due to less pressure differential between formation pressure and dew point pressure and weak edge-bottom water capac- ity, depleted production of Yakela-Dalaoba gas condensate field generally results in retrograde condensation occurrence. In consideration of longer stable production period of deeper condensate gas reservoir and ultimate condensate oil recovery ratio, recognition method for retrograde condensation characteristics in condensate gas reservoir was studied. This method combined 11 dynamic and static param- eters reflecting retrograde condensation characteristics. Using this method reasonably interprets different production features between Yalake-Dalaoba and convent