渤海湾盆地饶阳凹陷肃宁-大王庄地区中深层沉积特征及有利储层评价  

Sedimentary characteristics and favorable reservoir evaluation of medium-deep formation in Suning-Dawangzhuang area of Raoyang Sag in Bohai Bay Basin

作　　者：吕传炳 庞雄奇[2,3] 国芳馨 李敏[2,3] 火勋港 梁星如 庞宏 LüChuanbing;PANG Xiongqi;GUO Fangxin;LI Min;HUO Xungang;LIANG Xingru;PANG Hong(PetroChina Huabei Oilfield Company,Renqiu 062552,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China;College of Geoscience,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油华北油田公司,河北任丘062552 [2]油气资源与探测国家重点实验室,北京102249 [3]中国石油大学(北京)地球科学学院,北京102249

出　　处：《大庆石油地质与开发》2022年第5期1-8,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重大科技专项“富油气区带整体再评价关键技术攻关研究与应用”(2017E-1504)。

摘　　要：饶阳凹陷中深层储层非均质性强,储层沉积复杂多变,非常不利于有利储层目标区的评价工作。为预测优势砂体及有利储层,以饶阳凹陷油气最富集的肃宁-大王庄地区为例,基于40口井单井岩心和测井资料进行了沉积相划分,并结合物源分析及沉积微相研究,分析了沉积微相及砂体在不同时期的展布特征,结合沉积微相和储层物性的相关性分析,预测了有利储层分布。结果表明:研究区可划分为辫状河三角洲平原和三角洲前缘2种沉积亚相和8种沉积微相;从E_(s)到Es_(x)沉积时期,东部的河道有逐渐萎缩的趋势,砂体的分布范围逐渐变小;明确了三角洲平原亚相中的辫状河道砂体和三角洲前缘亚相中的水下分流河道砂体为Ⅰ类有利储层,预测出宁603井区西南部和宁608井区西北部为肃宁-大王庄地区的中深层优质储层有利目标区。研究成果为肃宁-大王庄地区的中深层油气的勘探开发提供了理论支撑。Medium-deep reservoirs in Raoyang Sag are characterized by high heterogeneity and complex variable reservoir deposition,which are not conducive to evaluation of favorable reservoir target area. In order to predict advantageous sandbodies and favorable reservoirs,taking Suning-Dawangzhuang area with the most enriched oil and gas in Raoyang Sag as an example,sedimentary facies are divided through comprehensive analysis on cores and logging data of 40 wells,extension characteristics of sedimentary microfacies and sandbodies in different periods are analyzed combined with provenance analysis and sedimentary microfacies study,and favorable reservoir distribution is predicted combined with correlation analysis between sedimentary microfacies and reservoir properties. The results show that studied area are divided into 2 sedimentary subfacies and 8 sedimentary microfacies in braided river delta plain and delta front.In Esto Essedimentation period,eastern channels had a tendency to shrink gradually,and distribution range of sandbodies gradually became smaller. Braided channel sandbodies in delta plain subfacies and underwater distributary channel sandbodies in delta front subfacies are verified as Class Ⅰ favorable reservoirs.The southwest of Ning 603 well area and the northwest of Ning 608 well area are predicted to be favorable target areas in medium-deep high-quality reservoirs in Suning-Dawangzhuang area. The research provides theoretical support for exploration and development of medium-deep oil and gas in Suning-Dawangzhuang area.

关 键 词：饶阳凹陷 中深层 储层预测 沉积微相 有利储层评价 

分 类 号：TE122.2[石油与天然气工程—油气勘探]