基于多属性融合的火山机构喷发演化规律研究  

Study on the eruption evolution pattern of volcanic structures based on multi-attribute fusion

作　　者：崔名喆 李超 吴春新 路研 张立安 CUI Mingzhe;LI Chao;WU Chunxin;LU Yan;ZHANG Li an(Bohai Oilfield Research Institute,CNOOC China Ltd.,Tianjin Branch,Tianjin,300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《天然气与石油》2024年第4期63-72,共10页Natural Gas and Oil

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2016ZX05058);中海石油(中国)有限公司重点项目“渤海中深层复杂油气藏高效开发技术”(CNOOC-KJ135ZDXM36TJ03TJ)。

摘　　要：渤海湾盆地渤中34-9油田常规砂岩油藏贯穿火山机构内部,油藏储层叠置连片分布,造成岩相变化快、物性变化大以及不同期次的火山岩叠置。综合利用火山岩岩心、薄片、测井、地震融合等资料,基于神经网络技术对渤中34-9油田不同岩性结构化数据进行有效表述和预测,对新生界火成岩发育特征和火山机构时空演化规律进行研究,明确多岩相沉积时期火山活动范围,并建立不同火山岩相识别方式模板。研究认为,渤中34-9油田火成岩相可分为火山通道相、溢流相、爆发相、次火山岩相和火山沉积相;发育5期复合性火山喷发活动,内部发育多个单一火山旋回相序。经78口开发井实施表明,有针对性地进行评价和优化井位,可有效规避钻遇火成岩的风险,提高砂岩油藏钻遇率。研究成果可为渤海乃至国内外类似油田的勘探和开发提供参考。The conventional sandstone reservoir in Bozhong 34-9 tectonic area runs through the volcanic structure,with the reservoir layers superimposed and successively distributed,resulting in the rapid change in lithofacies,significant variations in physical properties and the overlapping of igneous rocks from different periods.The neural network technology is used to effectively describe and predict the structural data of different lithologies in this area based on the comprehensive use of volcanic core,thin section,well logging and seismic fusion.Research was conducted on the development characteristics of Cenozoic igneous rocks and the spatio-temporal evolution patterns of volcanic structures,clarifying the range of volcanic activity during multi-lithofacies sedimentation periods and establishing identification templates for different volcanic facies.The study shows that the igneous facies developed in Bozhong 34-9 tectonic area can be divided into volcanic channel facies,overflow facies,explosive facies,subvolcanic facies and volcanic deposits.Five periods of compound volcanic eruption activities were developed,each containing several single volcanic cycle phase sequences.The implementation of 78 development wells indicates that targeted evaluation and optimization of well location can effectively avoid encountering igneous rocks and improve drilling rate of sandstone reservoirs.The research findings can provide reference for the exploration and development experience of similar oil fields in Bohai and even those at home and abroad.

关 键 词：渤海湾盆地 砂岩油藏 神经网络 勘探开发 火山喷发 火山机构 

分 类 号：P618.13[天文地球—矿床学]