论文部分内容阅读
综合应用岩心、录井、测井、地震及粒度分析资料 ,采用沉积学、地震地层学方法 ,阐明了松辽盆地南部海坨子地区萨尔图油层三砂组沉积微相特征 .萨三砂组发育的沉积相有河流、湖泊和三角洲相 ,河流相可识别出点坝、天然堤、决口扇和河漫滩微相 ;湖泊相主要为浅湖亚相 ,其微相类型有混合坪、泥坪及砂坪微相 ;三角洲相识别出平原、前缘和前三角洲 3个亚相 .研究区西北角为无沉积区 ,河流相仅发育于王家炉西北侧 ,三角洲相发育于海 2 4井—海 5井一线以西 ,呈北西—南东向展布 ;河流相的河道、三角洲分流河道、河口坝、远砂坝等砂岩体发育于海 2 2井—王家炉等地及长发村南侧 ;海 2 4井—海 5井一线以东为浅湖沉积区 ,在海 14井、海 2 3井及海 11井东侧发育有浅湖砂坪沉积微相 .河道砂体、三角洲分流河道、河口坝砂体厚度和规模较大 ,具有较好的储集性能 ,是形成岩性油气藏的良好储层
Sedimentary and seismic stratigraphic methods are applied to elucidate the sedimentary microfacies of the Saertu Formation in the Sanduzi subregion, southern Songliao Basin, using core data of core, logging, logging, seismic and particle size analysis. Sedimentary facies have rivers, lakes and delta facies. The river facies can identify point dams, natural dike, rift fan and river floodplain microfacies. The lacustrine facies are mainly shallow lake subfacies, and their microfacies are mixed pits, mud pits and sand pits The microfacies and deltas recognize three subfacies of the plains, the front and the former delta.The northwest corner of the study area is non-sedimentary area, and the river facies only develops on the northwestern side of the Wangjia Furnace, and the delta facies is developed in the first line of the Hai 2-4 and Hai 5 wells In the west, there is an NW-SW distribution. The fluvial facies channels, delta distributary channels, estuarine barbs and far sand bars are well developed in the Hai 2 2 well - Wangjia Furnace and other places and south of Changfa Village; - Well Hai 5 is located east of the shallow lake sedimentary area east of the well 14, sea 23 well and east of Hai 11 well developed shallow lacustrine sedimentary microfacies.Channel sand body, delta distributary channel, estuarine sand body Thicker and larger, with better Set performance, a good reservoir formed lithologic reservoirs