珠江口盆地陆丰凹陷古近系高电阻率水层录井识别方法  

Mud logging identification method of Paleogene high resistivity water layers in Lufeng sag of Pearl River Mouth Basin

作　　者：曹英权 蒋钱涛 熊亭 袁胜斌 邓卓峰 CAO Yingquan;JIANG Qiantao;XIONG Ting;YUAN Shengbin;DENG Zhuofeng(China France Bohai Geoservices Co.,Ltd.,Tianjin 300457,China;Shenzhen Branch,CNOOC(China)Co.,Ltd.,Shenzhen,Guangdong 518000,China)

机构地区：[1]中法渤海地质服务有限公司 [2]中海石油(中国)有限公司深圳分公司

出　　处：《录井工程》2023年第3期74-80,共7页Mud Logging Engineering

摘　　要：珠江口盆地陆丰凹陷古近系恩平组及文昌组为典型低孔低渗油藏,受地层水矿化度快速变化的影响,部分水层电阻率高,与油层的对比度低,利用测井手段识别流体性质难度较大,给陆丰凹陷高效勘探开发带来了极大的挑战。通过分析高电阻率水层的录井响应特征,深入挖掘FLAIR流体录井数据以及地化录井参数,建立了基于FLAIR流体录井以及地化录井技术的油水层解释方法和解释标准。应用该方法对陆丰凹陷古近系高电阻率水层的解释符合率达到90%以上,可以有效解决陆丰凹陷高电阻率水层识别的难题,为勘探开发快速决策提供理论依据,从而达到提质增效的目的。Enping Formation and Wenchang Formation of Paleogene in Lufeng sag of Pearl River Mouth Basin are typical low porosity and low permeability reservoirs.Due to the rapid change of formation water salinity,some water layers have high resistivity and low contrast with oil layers,so it is difficult to identify fluid properties by well logging means,which brings great challenges to efficient exploration and development of Lufeng sag.By analyzing mud logging response characteristics of high resistivity water layers and digging in⁃depth FLAIR fluid logging data and geochemical logging parameters,the interpretation method and interpretation standard of oil and water layers based on FLAIR fluid logging and geochemical logging technology are established in this paper.By applying this method,the interpretation coincidence rate of Paleogene high resistivity water layers in Lufeng sag is over 90%,which can effectively solve the problem of high resistivity water layer identification in Lufeng sag,provide theoretical basis for rapid decision⁃making of exploration and development,and achieve the purpose of improving quality and increasing benefits.

关 键 词：高电阻率水层 FLAIR流体录井 地化录井 陆丰凹陷 珠江口盆地 

分 类 号：TE132.1[石油与天然气工程—油气勘探]