摘要
为实现已开发区扶余油层河道砂体精细刻画的目的,针对以往应用开发井资料编制的沉积微相图不能确定井间砂体边界及无法预测井间河道砂体的问题,在多属性神经网络地震相预测成果的基础上,结合不同砂体组合类型与地震响应及地震相的特征,运用孤立式砂体、不等厚互层式砂体边界识别方法,实现了A、B两个区块35个沉积单元扶余油层河道砂体的精细刻画。砂体精细刻画成果指导了A区块6个井组注采系统调整,增加水驱储量11.52×104 t,日产油提高11.5 t,含水下降4.3个百分点,采油速度提高0.56个百分点;同时指导了B区块11口加密油井的优选部署,预计可增加可采储量5.26×104 t。
In order to achieve the purpose of fine characterization of channel sand bodies in Fuyu oil reservoir in developed area,in view of the problem that the sedimentary microfacies maps compiled by development well data can not determine the boundary of interwell sand bodies and predict interwell channel sand bodies,based on the results of seismic facies prediction by multi-attribute neural network,combined with different combination types of sand bodies,seismic response and characteristics of seismic facies,the fine characterization of channel sand bodies in Fuyu oil reservoir of 35 sedimentary units of A and B blocks has been achieved by using the boundary identification methods of isolated sand bodies and unequal thickness interbedded sand bodies.The fine sand body characterization results have guided the adjustment of injection and production system of 6 well groups in block A,increasing water drive reserves by 115200 tons,increasing oil production by 11.5 tons per day,decreasing water cut by 4.3 percentage points and increasing oil production rate by 0.56 percentage points.At the same time,they have guided the optimal deployment of 11 infill wells in block B,and are expected to increase recoverable reserves by 526000 tons.
作者
唐振国
迟博
吕金龙
杨桂南
Tang Zhenguo;Chi Bo;Lv Jinlong;Yang Guinan(Exploration and Development Research Institute of Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163712, China)
出处
《非常规油气》
2020年第2期41-48,共8页
Unconventional Oil & Gas
基金
国家级大型油气田及煤层气开发项目“低渗、特低渗复杂油藏规模有效动用关键技术”(2017ZX05013-006)
省部级重大科技专项课题“外围油田改善开发效果及提高采收率技术研究与应用”(2016E-0209)资助。
关键词
地震相
组合结构
砂体边界
识别方法
精细刻画
seismic facies
assembly configuration
sand boundary
recognition method
fine characterization
