薄层超稠油驱泄复合开发蒸汽腔演变物理模拟实验  

Physical simulation experiment of steam chamber evolution in compound development of thin-layer ultra-heavy oil flooding and drainage

作　　者：赵长虹[1] 孙新革[1] 卢迎波[1] 王丽[1] 胡鹏程[1] 邢向荣[1] 王桂庆 ZHAO Changhong;SUN Xinge;LU Yingbo;WANG Li;HU Pengcheng;XING Xiangrong;WANG Guiqing(PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China)

机构地区：[1]中国石油新疆油田公司,新疆克拉玛依834000

出　　处：《岩性油气藏》2023年第5期161-168,共8页Lithologic Reservoirs

基　　金：国家科技重大专项“大型油气田及煤层气开发”(编号:2016ZX05012);中国石油股份有限公司重大科技专项“注蒸汽后期提高采收率技术研究”(编号:2016B-1401);新疆油田和吐哈油田勘探开发关键技术研究与应用项目“新疆油田浅层稠油稳产提效技术研究与应用”(编号:2017E-0408)联合资助。

摘　　要：通过对新疆风城油田F井区侏罗系齐古组油藏开展二维、三维物理模拟实验和数值模拟研究,揭示了其开发蒸汽腔的演变规律和开采机理。研究结果表明:(1)在蒸汽超覆和采出点泄压牵引作用下,蒸汽腔前缘主体向水平段方向推进,蒸汽腔前缘形态由“壶嘴”形向“钟”形演化,最后变成“帽沿”形。蒸汽腔立体形态在直井周围先呈“孤岛”形,后连通成“廊桥”形,最后汇聚成一个大腔体。(2)根据蒸汽腔演变规律,将整个模拟实验过程划分为注采预热阶段、蒸汽腔形成阶段、蒸汽腔扩展阶段、蒸汽腔下降阶段,整个生产周期采出程度可达55.6%,油汽质量比为0.17,取得了良好的实验效果。(3)物理模拟实验和数值模拟结果揭示了驱泄复合开发前期蒸汽驱替、中后期重力泄油的驱油机理,表征了蒸汽腔的演变规律,为同类型油藏的高效开发提供了技术支持。The 2D and 3D physical simulation experiments and numerical simulation studies were carried out on the reservoirs of Jurassic Qigu Formation in F well area of Fengcheng oilfield,Xinjiang,revealing the evolution law and production mechanism in the compound development of steam chamber.The results show that:(1)Under the action of steam overlay and pressure relief traction at the recovery point,the main body of the leading edge of the steam chamber advanced to the horizontal section,and the shape of the leading edge of the steam chamber evolved from“spout”type to“bell”type,and finally became“cap”type.The three-dimensional shape of the steam chamber first presented an“isolated island”type around the vertical well,then connected into a“corridor bridge”type,and finally converged into a large cavity.(2)According to the evolution law of steam chamber,the whole simulation experiment process was divided into injection-production connection stage,steam chamber formation stage,steam chamber lateral expansion stage and steam chamber decline stage.The recovery rate of the whole production cycle can reach 55.6%,the oil-steam ratio is 0.17,and good experimental results have been obtained.(3)The physical simulation experiment and numerical simulation results reveal the oil displacement mechanism of steam displacement in the early stage and gravity drainage in the middle and later stage of compound development,characterizing the evolution law of steam chamber,which provide technical support for the efficient development of similar reservoirs.

关 键 词：薄层超稠油 驱泄复合 蒸汽腔演变 物理模拟实验 齐古组 侏罗系 风城油田 

分 类 号：TE345[石油与天然气工程—油气田开发工程] P618.13[天文地球—矿床学]