苏北曲塘次凹阜二段致密油岩性及岩相特征  

Lithology and lithofacies characteristics of tight oil from the Second Member of Funing Formation in Qutang sub-sag,Northern Jiangsu

作　　者：张绍辉[1] 杨子玉[1] 段润梅[1] 米兴夺[1] 李瑜琴 白鹏翥 王艳丽[4] ZHANG Shaohui;YANG Ziyu;DUAN Runmei;MI Xingduo;LI Yuqin;BAI Pengzhu;WANG Yanli(Research Institute of Exploration and Development, PetroChina Dagang Oilfield Company, Tianjin 300280,China;No.1 Mud Logging Company,BHDC,CNPC,Tianjin 300280,China;No.4 Oil Production Plant of PetroChina Dagang Oilfield Company(Tanhai Development Company), Tianjin 300280,China;No.1 Oil Production Plant of PetroChina Dagang Oilfield Company, Tianjin 300280,China)

机构地区：[1]中国石油大港油田分公司勘探开发研究院,天津300280 [2]中国石油渤海钻探第一录井公司,天津300280 [3]中国石油大港油田分公司第四采油厂(滩海开发公司),天津300280 [4]中国石油大港油田分公司第一采油厂,天津300280

出　　处：《录井工程》2020年第S01期95-99,共5页Mud Logging Engineering

摘　　要：曲塘次凹阜二段致密油作为一个新的非常规油气资源勘探开发领域,其在储集层岩性、岩相研究与认识方面都属于空白。基于大量岩心实物、化验分析数据,通过开展曲塘次凹阜二段储集层岩性、岩相纵向组合特征研究,明确了阜二段岩石类型可划分为黏土岩、碳酸盐岩、长英沉积岩和细粒混合沉积岩四种类型,其中优势储集层以白云岩为主;厘清了阜二段自下而上共有六种岩相,其中阜二Ⅱ亚段LF③、阜二Ⅲ亚段LF⑤岩相为源储紧邻结构,阜二Ⅱ亚段LF④岩相属于源储一体结构,这三种岩相是曲塘次凹阜二段最有利的纵向岩相组合。在此基础上,利用厚度、脆性两项指标研究阜二段岩相的平面变化和分布,为曲塘次凹阜二段致密油下步的油气勘探突破提供了地质支撑。As a new exploration and development field of unconventional oil and gas resources,the tight oil from the Second Member of Funing Formation in Qutang sub-sag has few understanding or research on reservoir lithology and lithofacies.Based on a large amount of core and laboratory analysis data,through research on the longitudinal combination characteristics of reservoir lithology and lithofacies of the Second Member of Funing Formation in Qutang sub-sag,it is clarified that the rock types of the Second Member of Funing Formation can be divided into four types,clay rock,carbonate rock,felsic sedimentary rock and fine-grained mixed sedimentary rock,and that dolomite is the dominant reservoir.There are six lithofacies in the Second Member of Funing Formation from bottom to top,among which the lithofacies of LF③from the second submember of the Second Member of Funing Formation and the LF⑤from the third submember of the Second Member of Funing Formation are source-reservoir adjacent structure,and LF④from the second submember of the Second Member of Funing Formation is source-reservoir integrated structure.These three lithofacies are the most favorable longitudinal combination of the Second Member of Funing Formation in Qutang sub-sag,based on which the two indexes of thickness and brittleness are used to study the plane changes and distribution of the lithofacies of the Second Member of Funing Formation,providing geological support for the oil and gas exploration breakthroughs in the tight oil from the Second Member of Funing Formation in Qutang sub-sag.

关 键 词：曲塘次凹 阜二段 致密油 岩性 岩相组合 平面分布 源储一体 

分 类 号：TE132.1[石油与天然气工程—油气勘探]