塔河油田强底水凝析气顶油藏地面产量劈分的新方法  

A new method to ground production split of condensate gas cap reservoirs with strong bottom water in Tahe Oilfield

作　　者：刘丽娜[1] 印婷[1] 郑小杰[1] 马新平[1] 刘蕊[1] 谢爽[1] LIU Lina;YIN Ting;ZHENG Xiaojie;MA Xinping;LIU Rui;XIE Shuang(Research Institute for Exploration and Development,Sinopec Northwest Oilfield Company,Urumqi,Xinjiang 830011,China)

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《油气藏评价与开发》2020年第2期65-70,共6页Petroleum Reservoir Evaluation and Development

基　　金：“十三五”国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(2016ZX05053)。

摘　　要：塔河油田强底水凝析气顶油藏是由气顶、油层及大底水组成的砂岩油气藏,在开发过程中,因气顶和底油采出不均衡,导致气窜或油窜,开发效果较差。针对塔河油田T区块块状底水气顶油藏的实际生产状况,综合考虑生产过程中气油比与密度的变化,探索了一种劈分气顶、油藏地面产量的新方法——单井生产阶段综合劈分法,应用此方法分别计算了气顶油藏的原油、凝析油、凝析气、溶解气的采收率,分别为12.28%、22.96%、29.75%、12.05%,将计算结果与国内外同类油气藏相比较,认为比较符合该类油藏的开发特点,而且现场操作较为简单。通过气顶油藏采收率的计算,了解气顶、油藏的开发状况,及时发现开发中存在的问题及区块的开发潜力,以便于更合理地开发气顶油藏。The strong bottom water condensate gas cap reservoirs in Tahe Oilfield is the sandstone reservoir composed of gas cap,oil reservoir and large scale of bottom water.In the process of development,gas channeling or oil channeling exists due to the uneven production of gas cap and bottom oil,and the development effect is poor.According to the actual production situation of gas cap reservoirs with massive bottom water in block T of Tahe oilfield,and considering the gas-oil ratio and density changes in the production process,a new method to split gas cap and reservoir ground production,integrated splitting method for single-well production stage,is explored.By this method,recovery rates of crude oil,condensate,condensate gas and dissolved gas in gas cap reservoirs are calculated,which are 12.28%,22.96%,29.75%and 12.05%,respectively.The calculated results are compared to that of the similar reservoirs at home and abroad,and it is found that they are matching the development characteristics of such reservoirs,and the field operation is relatively simple.Through the calculation of the oil recovery for the gas cap reservoirs,the development status is understood,and the problems existing in the development and the development potential of the block are timely discovered,so as to develop gas cap oil reservoir more reasonably.

关 键 词：凝析气顶油藏 原油 凝析油 凝析气 溶解气 产量劈分 

分 类 号：TE357[石油与天然气工程—油气田开发工程]