凝析气藏CO_(2)构造埋存量评估方法研究  

Research on the evaluation method for CO_(2) structural storagecapacity in condensate gas reservoirs

作　　者：张铃丰 廖新维[1] 唐康 王晓晨 邹建栋[2] ZHANG Ling-feng;LIAO Xin-wei;TANG Kang;WANG Xiao-chen;ZOU Jian-dong(Key Laboratory of Petroleum Engineering,Ministry of Education,China University of Petroleum(Beijing),Beijing 102249,China;Changqing Oilfield Company of PetroChina,Xi′an 710018,China;Tarim Oilfield Company of PetroChina,Korla 841004,China)

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [2]中国石油长庆油田分公司,陕西西安710018 [3]中国石油塔里木分公司,新疆库尔勒841004

出　　处：《陕西科技大学学报》2025年第1期101-106,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家科技重大专项项目(2017ZX05009004-005);国家自然科学基金项目(52074322,U762210)。

摘　　要：凝析气藏中复杂的气液相态变化为CO_(2)埋存潜力评估带来很大困难.为了进一步提高凝析气藏CO_(2)构造埋存量的计算准确性,基于物质的量守恒原理,考虑注入CO_(2)与凝析气体混合、反凝析变化、岩石和束缚水形变等因素,推导了凝析气藏生产阶段及CO_(2)埋存阶段物质平衡通式,进一步建立了凝析气藏CO_(2)构造埋存量评估方法.结果表明,该方法计算的CO_(2)构造埋存量与数值模拟结果吻合度较好,误差在6.42%以内.忽略混合气体偏差因子变化会导致CO_(2)构造埋存量计算结果偏大,误差达到18.61%.忽略反凝析变化则会导致CO_(2)构造埋存量计算结果偏小,这一误差在低埋存压力区间内高达9.93%.该方法对凝析气藏中CO_(2)构造埋存量评估及CO_(2)埋存方案优化具有重要意义.The complex phase behavior changes in condensate gas reservoirs make it difficult to evaluate CO_(2) storage potential.In order to improve the calculation accuracy of CO_(2) tectonic storage capacity of condensate gas reservoir,based on the principle of conservation of mole,considering the mixing of injected CO_(2) and condensate gas,retrograde condensate,rock and bound water deformation,the general formula of material balance in production stage and CO_(2) storage stage of condensate gas reservoir is derived,and the CO_(2) tectonic storage capacity evaluation method is established.The results show that the CO_(2) tectonic storage capacity calculated by this method is in good agreement with the numerical simulation results,and the error is less than 6.42%.If the variation of deviation factor is ignored,the calculation result of CO_(2) tectonic storage capacity is too large,and the error reaches 18.61%.If the variation of retrograde condensate is ignored,the calculation result of tectonic storage capacity is too small,and the error is as high as 9.93%at the low storage pressure.This method is of great significance for CO_(2) tectonic storage capacity assessment and CO_(2) storage optimization in condensate gas reservoirs.

关 键 词：凝析气藏 CO_(2)构造埋存量 物质平衡 埋存潜力评估 

分 类 号：TE09[石油与天然气工程]