火焰山油田三工河组沉积特征研究

火焰山油田属于吐哈盆地的火焰山构造带,通过测井、录井、岩心等资料,结合三工河组区域上的沉积特征和沉积相演化规律,认为火焰山油田三工河组为三角洲沉积环境,岩性主要为深灰色-灰色泥岩、泥质粉砂岩,灰白色砂砾岩、含砾砂岩和细砂岩;发育水下分流河道、水下分流河道间、河口坝、席状砂沉积微相;水下分流河道微相砂体连通性好,构成研究区内最主要的含油层系。通过对沉积微相的研究,为研究区油田的高效开发奠定地质基础,进而为下一步勘探部署工作做好技术支撑。

Study on the sedimentary facies of Sangonghe formation in Huo Yanshan oilfield

Based on core and logging analysis,with regional sedimentary characteristics and sedimentary facies distribution,Sangonghe formation is delta deposit,and four microfacies are identified,including underwater distributary channel,tributary bay,mouth bar and sheet sand.The lithology is mainly grey mudstone,pelitic siltstone,off-white glutenite,pebbly sandstone and fine sandstone.Sand bodies of underwater distributary channel are major oil bearing series for great sand body connectivity.The study of sedimentary microfacies will finally provide geological basis for efficient exploration and development of the oilfield.