海上非均质油藏优势通道识别新方法及应用  

A New Method and Application for Water Channels Identifying in Heterogeneous Offshore Oil Reservoirs Driven

作　　者：未志杰 王德强 刘玉洋 张健 周文胜 雍唯 WEI Zhi-jie;WANG De-qiang;LIU Yu-yang;ZHANG Jian;ZHOU Wen-sheng;YONG Wei(National Key Laboratory of Offshore Oil and gas Exploitation,Beijing 102209,China;CNOOC Research Institute Co.,Ltd.,Beijing 102209,China)

机构地区：[1]海洋油气高效开发全国重点实验室,北京102209 [2]中海油研究总院有限责任公司,北京102209

出　　处：《科学技术与工程》2024年第20期8512-8520,共9页Science Technology and Engineering

基　　金：国家自然科学基金面上项目(2016ZX05025-003);中国海洋石油有限公司“十四五”重大科技项目(KJGG2021-0504)。

摘　　要：海上油田储层疏松、非均质性强且注采强度高,注入水易沿着优势渗流通道突进,影响开发效果。将油藏抽提简化为注采井间连通网络,构建一种新的基于井间连通单元的水驱优势通道定量识别模型,耦合开发动态自动历史拟合算法可以直接、准确、快速地获取优势通道强度特征参数,进一步通过引入窜流强度综合评判因子,给出了适用于海上非均质油藏的分级表征新方法与分级界限。实际油田应用表明,新方法能够快速准确地识别并预测大孔道与优势通道,包括纵向发育层位、平面发育方向以及发育强度,为油田低效通道针对性治理以及持续高效开发提供了及时指导。Offshore oil reservoirs are characterized by loose and heterogeneous strata,high injection-production intensity,and easy water breakthrough along advantageous permeability channels,which can significantly affect development efficiency.The oil reservoir extraction process to an interconnected network of injection were simplified and production wells and developed a novel quantitative identification model for advantageous channels based on inter-well connectivity units.By coupling with a dynamic automatic history matching algorithm,the characteristic parameters of advantageous channels can be obtained directly,accurately and rapidly.Furthermore,a comprehensive evaluation factor of cross-flow intensity was introduced to provide a new method for the classification and characterization of heterogeneous offshore oil reservoirs.Actual field applications show that large channels and advantageous channels can be quickly and accurately identified and predicted,including the vertical development layers,the planar development directions,and the development intensities.Timely guidance for targeted management of low-efficiency channels and sustained high-efficiency development are provided by this method in oil fields.

关 键 词：稠油 水驱 优势通道 定量识别 分级界限 

分 类 号：TE357[石油与天然气工程—油气田开发工程]