摘要
缝洞型火成岩油藏受裂缝发育影响,注水提高采收率效果不佳。针对该问题,通过建立火成岩岩相模型,基于岩心、测井及地震多尺度裂缝描述的裂缝模型,采用“岩相展布+裂缝模型”双重约束,建立高精度缝洞双重介质地质模型,准确描述储层与裂缝分布。以此为基础,结合渗流规律,利用机理模型流线模拟指导注采井网设计,再利用三维数值仿真模拟进一步优化注水开发方案,形成一套缝洞型火成岩油藏注水开发方案优化设计方法。研究成果应用于大港枣园油田枣1508区块,现场初步实施后,稳产期超过1.5 a,综合含水维持在5%,采收率预计提高10个百分点以上。研究成果对类似火成岩油藏效益开发具有重要借鉴意义。
A igneous lithofacies model was established to improve the low efficiency of waterflooding in the igneous reservoir results from fracture.Based on the fracture model with multi-scale characterizations from core,logging and seismic data,the“lithofacies distribution+fracture model”dual constraints was used to establish a high-precision fracture-cave dual-medium geological model to characterize the reservoir fracture distribution.The conceptual streamline simulation model was carried out to design the well pattern by combining with flow mechanism.The 3D numerical simulation was used to further optimize the waterflooding pr ogram,which presents a set of waterflooding development optimization methods for the fracture-cave igneous reservoir.This research was applied to the Block Zao1508 of Zaoyuan Oilfield in Dagang Oilfield.The stable production period exceeds 1.5 a after implementation,the comprehensive water-cut is maintained at 5%,and the recovery factor is expected to be increased by more than 10 percentage points.It could provide certain references for the efficient development of similar igneous reservoirs.
作者
卢异
夏国朝
吕栋梁
成亚斌
宋舜尧
何江
王延奇
Lu Yi;Xia Guochao;Lyu Dongliang;Cheng Yabin;Song Shunyao;He Jiang;Wang Yanqi(PetroChina Dagang Oilfield Company,Tianjin 300280,China;Southwest Petroleum University,Chengdu,Sichuan 610500,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2020年第1期96-101,共6页
Special Oil & Gas Reservoirs
基金
中国石油天然气股份有限公司科技重大专项“大港油区大油气田勘探开发关键技术研究”（2014E-06）、“大港油区效益增储稳产关键技术研究与应用”（2018E-11）
关键词
火成岩油藏
提高采收率
岩相
裂缝
双重介质模型
数值模拟
枣园油田
igneous reservoir
enhance oil recovery
lithofacies
fracture
dual-medium model
numerical simulation
Zaoyuan Oilfield
