小油环大气顶油藏高效开发及稳产策略  

Efficient Development and Production Maintenance Measures of Reservoir with Little Oilring and Large Gas-Cap

作　　者：曹海丽[1] 张祥忠[1] 陈礼[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《特种油气藏》2016年第3期97-101,155-156,共5页Special Oil & Gas Reservoirs

基　　金：中国石油天然气集团公司重大专项"中国石油海外油气上产2亿吨开发关键技术研究--哈萨克斯坦南图尔盖盆地主力砂岩油田高速开发剩余油分布规律及挖潜技术研究与应用"(2011E-2506)

摘　　要：针对PK项目中Aryskum油田在中石油接管后发现哈萨克斯坦方案制约该油藏高效稳定开发的问题,通过突破传统手段进行精细小层对比,建立一体化静态模型精算储量,应用三维地震技术刻画构造特征,统计分析产能下降原因,系统评价注水及注气的可行性,合理规划井网及井距,筛选合理开采方式等方法进行研究,不断深化油藏工程认识,在油田不同的区域设计优选出不同调整部署方案。现场应用表明,该油藏连续9 a年产油保持在50×10^4t/a以上,最高可达到90×10^4t/a,合同期内该油藏提高采出程度5%以上。这对哈萨克斯坦PK项目增产稳产具有重要意义,尤其对国内外为数不多的小油环大气顶油藏的开发经验总结和资料积累意义深远。It is noted that the efficient and stable development of reservoir is limited by Kazakhstan development program after Aryskum Oilfield in PK Project is taken over by CNPC. The sublayers are finely correlated by breaking through conventional means to establish an integrated static model to accurately calculate reserve. The reservoir engineering understanding is constantly further improved and specific adjustment deployment programs are optimized for different reservoir regions by structure characterization with 3D seismic technology,microfacies characterization with extracting of key logging factors,statistical analysis of production decline reason,systematically evaluate waterflooding and gas flooding feasibilities,well network and well spacing optimizations,producing mode optimization,etc. Field application demonstrates that the field annual oil productions are kept more than 50 × 10~4 t for 9 years with a maximum annual production of 90×10~4t and the reservoir recovery degree is enhanced more than 5% within the contract period. Research is of great significance for the production enhancement and maintenance of PK Project in Kazakhstan and especially for the development experience and data accumulation of the few reservoirs with little oilring and large gas-cap at home and abroad.

关 键 词：构造油藏 大气顶 小油环 气窜 水平井 数值模拟 注水开发 高产稳产 Aryskum油田 

分 类 号：TE33[石油与天然气工程—油气田开发工程]