埕海6区块火成岩类型及分布规律研究  

Igneous Rock Classification and Distribution Patterns in the Block 6 of Chenghai Oilfield

作　　者：张静蕾[1] 刘文钰[1] 李宁[1] 牟晓慧[1] 唐和军[1] Zhang Jinglei;Liu Wenyu;Li Ning;Mu Xiaohui;Tang Hejun(PetroChina Dagang Oilfield Company,Tianjin 300280,China)

机构地区：[1]中国石油大港油田分公司

出　　处：《特种油气藏》2019年第5期64-70,共7页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项“渤海湾盆地黄骅坳陷滩海开发技术示范工程”(2011ZX05050);中国石油重大专项“大港油区效益增储稳产关键技术研究与应用”(2018E-11)

摘　　要：针对埕海6区块火成岩刻画难度大、控藏机理难以厘清等问题,综合利用岩心、镜下鉴定、测井、录井、地震等资料,并采用地震剖面追踪、地震属性提取、相干体切片等技术,开展深化认识火成岩分布规律研究,有效识别火成岩类型及纵、横向展布范围,对火成岩分布规律进行验证和刻画,进一步明确火成岩区域控藏机理。结果表明,研究区火成岩表现为2种岩性、多期喷发特征,火成岩类型以喷出岩和火山碎屑沉积岩为主,岩性以致密玄武岩为主,沙河街组至馆陶组末期为火成岩喷发期;火成岩测井及地震响应明显,多方法、多属性技术相互配合验证并与火成岩分布范围有良好的匹配关系。通过对研究区火成岩的识别,明确研究区火成岩的发育有利于各断块岩性圈闭形成一系列火成岩遮挡的构造-岩性油气藏,对指导研究区油气发现与开发具有重要意义。The core test,microscopic identification,well logging,mud logging,seismic data and other data were comprehensively used to characterize the igneous rock and understanding the main-controlling factors for hydrocarbon accumulation.Seismic profile tracking,seismic attribute extraction,coherence cube slice and other means were applied to deepen the understanding of igneous rock distribution patterns.The igneous rock was classified and the corresponding lateral and longitudinal distributions were gained to verify the igneous rock distribution patterns and identify the main-controlling factors for hydrocarbon accumulation.Result indicates that the igneous rock with multi-stage eruptions in this region can be classified into two types according to the lithology.The igneous rock can be mainly classified as eruptive rock and volcanic clastic sedimentary rock,and the corresponding lithology is dominated by dense basalt.The Shahejie Formation to the late stage of Guantao Formation is considered as the igneous rock eruption period.Igneous rock is featured by distinct logging and seismic responses.The combination between multi-method and multi-attribute techniques can be used to gain the igneous rock distribution.According to the identification of igneous rocks in this region,it is clear that the igneous rock development is favorable to the creation of a series of structure-lithology hydrocarbon reservoirs with igneous rock barriers.

关 键 词：火成岩 响应特征 成岩类型 分布规律 埕海6区块 

分 类 号：TE122.2[石油与天然气工程—油气勘探]