【作者】 金璐；

【导师】 张继红；

【作者基本信息】 东北石油大学 ， 油气田开发工程， 2011， 硕士

【摘要】 随着油田开发的不断深入,产量递减逐年加剧,含水率上升非常明显,多数油田在水驱开发过程中均存在层间非均质性、局部注采不完善及井间滞留等情况,使水驱后仍有大量残余油和剩余油存留于油层中,因此如何找到一种更有效的方法对这部分残余油或剩余油进行进一步的挖潜是各油田亟待解决的问题。杏八九区在经历了一次、二次、三次采油井网加密调整后,已进入特高含水期开发阶段。本文根据杏八九区井网部署特点和井网演变趋势,详细分析油层动用状况,确定剩余油富集区,采用高效井技术先进行水驱挖潜注采不完善及断层附近等区域剩余油,然后转为三次采油开发,以实现少井高效开发的目的。本文通过油藏数值模拟方法对杏八九区剩余油分布规律、优化高效井层系组合及射孔方法、完善高效井注采系统方案以及三次采油井网前期利用对后期注聚的影响等进行了研究。研究表明:高效井前期利用+后期注聚的最终采收率为57.43%,比无高效井聚驱最终采收率高约0.11%,增加可采储量为1.3×104t;高效井中特高含水层的补孔时机对后期聚驱采收率有一定影响,而注采调整方案对后期注聚影响甚微。因此,三次采油井网高效井的前期利用是可行的,该研究成果可为油田高效井技术的进一步研究及现场应用提供理论与技术支持。更多还原

【Abstract】 With the deepening development of oil field, the production decline intensified year by year, water cut increased very significantly, due to interlayer heterogeneity, partial injection-production imperfection and inter-well detention in the most oil-field developments, there were still the massive residual oil and remaining oil surviving in the oil layer after the water flooding, so how to find a more effective method for further redevelopment of this part of the residual oil or remaining oil was the problem that needed to be resolved in oilfield.Xing eighty-nine area had experienced one, two, three well pattern thickening adjustment stage, entered the Ultra-high Water cut development stage. According to the characteristic of well pattern deployment and the evolutionary trend of well pattern in Xing eight-nine area, this article analyzed the reservoir producing state earnestly, determined the remaining oil enriched zone, water flooding was firstly carried out to exploit the remaining oil by the high effective well technology, then wells used in EOR were exploited, in order to achieve the purpose of less well efficient development. The high effective well technology had obtained the widespread application in the Daqing oil field, and had made the better development progress.This article researched distribution rules of remaining oil, optimization layer combination of high effective well and casing perforation type, improvement injection-production system of high effective well and prophase using of EOR well pattern on the effects of anaphase injecting polymer through the reservoir numerical simulation method. Results showed that the final recovery efficiency of prophase using of high effective well + EOR was 57.43 percent, higher 0.11 percent than that without prophase using of high effective well and recoverable reserves increased by 1.3×104 tons; different injection-production adjustment programs of high effective well had little effect on EOR, and re-shooting opportunity of ultra-high Water cut layers had certain effect on EOR. So prophase using of high effective well was correct and valuable, provided certain value of the technology reference for further research of high effective well in oil field and later field application.更多还原