摘要
渤海地区的BZ油田为典型的稀油油田,目前已进入高含水阶段,产量递减快,油田稳产难度大,提液为有效的增产措施。根据油藏原始状态下的岩心相渗曲线,认为含水率大于90%后才适合提液,这不利于海上油田的高效开发。利用广适水驱特征曲线对油田实际生产数据进行拟合,得到反映油田实际渗流特征的动态相渗曲线及无因次采油/液指数,判断该油田含水率大于60%后即可进行提液。将该结论应用于BZ油田,取得了良好的增油效果,为海上稀油油田提液提供了理论依据和生产经验,有利于该类型油田的进一步挖潜。
The BZ Oilfield in Bohai region is a typical light oilfield.Because it has entered high water-cut stage,there are rapid production decline and big difficulty in stabilizing oil production.So the big-pump enhanced liquid is an effective stimulation solution.However,according to permeability curves of cores at the original state of reservoir,it is proper to enhance liquid production only after water cut is greater than 90%,which is bad for offshore oilfield development.According to oilfield production data fitted by eurytopic water-drive curves,the dynamic permeability curves and dimensionless oil/liquid indexes were obtained,and it was concluded that enhancing liquid production can be conducted after water cut is greater than 60%.This conclusion was applied in BZ Oilfield,which has obtained good effect.And this provides theoretical basis and production experience for the similar oilfields.
作者
潘杰
汪全林
凌浩川
孙强
张弛
PAN Jie;WANG Quanlin;LING Haochuan;SUN Qiang;ZHANG Chi(Research Institute of Bohai Petroleum,Tianjin Branch of CNOOC Limited,Tianjin 300459,China)
出处
《复杂油气藏》
2018年第3期52-54,67,共4页
Complex Hydrocarbon Reservoirs
基金
国家科技重大专项"海上油田丛式井网整体加密及综合调整油藏工程技术应用研究"(2011ZX05024-004)
关键词
稀油油田
动态相渗曲线
提液时机
light oilfield
dynamic permeability curve
timing of increasing liquid production
