S开发区特高含水开采阶段降本增效的主要做法及效果分析  

Main Methods and Effect Analysis of Reducing Cost and Increasing Efficiency in the Stage of Ultra-high Water Cut Mining in S Development Zone

作　　者：米冬玲[1] 袁媛[1] MI DongLing;YUAN Yuan(No.3 Oil Production Plant of Daqing Oilfield Co.,Ltd.)

机构地区：[1]大庆油田有限责任公司第三采油厂

出　　处：《石油石化节能》2019年第5期1-3,I0002,共4页Energy Conservation in Petroleum & PetroChemical Industry

摘　　要：S开发区块目前处于特高含水开采阶段,综合含水率高达94.97%,剩余油饱和度低且高度分散,弱水洗段与中、强水洗段交错分布,低效无效循环问题十分突出。因此有必要明确S开发区块特高含水开采阶段实现降本增效所需要采取的措施并对其应用效果进行分析。通过分析该区块目前开发效益状态,明确了进一步挖潜方向;综合应用油藏精细描述成果和动态数据资料,识别了优势渗流通道;通过调整优化注采方案、优化调剖注入参数、优化停注聚方式、实施分层配产、优化周期注水方式和停注周期等措施,控制了低效无效注采循环,最终从源头上实现了降本增效的目的。研究结果表明,S开发区块全年节约注水247.22×10~4m^3,节约聚合物干粉1 078 t,无效产液减少58.63×10~4t,成本节约3 000万元,实现了该区块的高效开发。During the process of development block “S” in the stage of ultra- high water cut, a series of problems need to be solved, such as high comprehensive water cut up to 94.97%, low and highly dispersed residual oil saturation, staggered distribution of weak,medium and strong water wash sections, low and inefficient circulation. Firstly, in this paper the current development benefit status of block “S” was analyzed and the direction for further development was clarified. Secondly, the dominant seepage channels were identified by using detailed reservoir description and dynamic production data. The low and inefficient circulation of injection and production was controlled and the purpose of reducing cost and increasing benefit was finally realized by adjusting the injection and production project, optimizing the injection parameters of deep profile control, the polymer injection parameters, the cycle of water injection and the time of stopping injection,and adjusting layered production. The results show that the volume of saved water injection was 247.22×10^4 m^3 and the volume of saved dry polymer was 1078 t in a year,the volume of ineffective liquid production was reduced by 58.63×10^4 t and the corresponding cost was lowered by 30 million yuan.

关 键 词：开发效益 优势渗流通道 低效无效循环 降本增效 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]