中低渗油藏特高含水期深部调驱实践与认识  

Application and cognition of the indepth profile modification and flooding technology in ultrahigh water cut period of medium and low permeability reservoir

作　　者：戴志鹏 马惠 毛超琪 钱志鸿 DAI Zhipeng;MA Hui;MAO Chaoqi;QIAN Zhihong(Petroleum Engineering Technology Research Institute of Sinopec Jiangsu Oilfield Company,Yangzhou 225009,China;No.2 Oil Production Plant of Sinopec Jiangsu Oilfield Company,Huai’an 211600,China)

机构地区：[1]中石化江苏油田分公司石油工程技术研究院,江苏扬州225009 [2]中石化江苏油田分公司采油二厂,江苏淮安211600

出　　处：《精细石油化工进展》2024年第5期15-19,共5页Advances in Fine Petrochemicals

摘　　要：针对江苏油田典型特高含水油藏G6区块,结合当前开发现状及中低渗储层特征,选择分散型堵剂进行深部调驱试验,从注入粒径、注入浓度和注入体积等工艺参数对调驱工艺进行优化,现场应用2个井组。结果显示:由于长期水驱形成高渗条带与大孔道,柔性颗粒调驱剂的粒径选择不应依赖原始孔喉尺寸,应在调驱过程中根据注入压力和油井响应及时调整,添加超大颗粒或连续相高强度堵剂转向段塞,封堵高渗水窜通道;树立整体调驱理念,可有效避免注水井组互相干扰,扩大井区波及体积,达到整体降水增油的目的。According to G6 block,a typical ultra-high water cut reservoir in Jiangsu oilfield,combined with the current development status and the characteristics of medium-low permeability reservoir,the field test of the in-depth profile modification and flooding was carried out by using dispersed phase plugging agent.The process of flooding was optimized from the process parameters such as injection particle size,injection concentration and injection volume.Two well groups were applied in the field.Results showed that due to the formation of high permeability bands and large pores in long-term water flooding,the size selection of flexible particle modulator should not depend on the original pore throat size,but should be adjusted in time according to injection pressure and well response during the process of flood modulator,and the addition of super-large particles or continuous phase high-strength plugging agent should be diverted to the slug to block the high-permeability water channeling channel.In scheme design,it is necessary to establish the concept of integral flooding control,which can effectively avoid the interference among water injection wells.To achieve the purpose of expanding the overall sweep volume,the overall precipitation increase oil.

关 键 词：特高含水期 中低渗油藏 深部调驱 分散型调驱剂 

分 类 号：TE357[石油与天然气工程—油气田开发工程]