松辽盆地北部泰康地区青山口组一段沉积微相特征

Microfacies characteristics of No.1 section of Qingshankou Formation, Taikang area of north Songliao basin

根据地震、测井、录井、岩心资料,应用沉积学和地震地层学的原理和方法查明了泰康地区青山口组一段的沉积微相特征.泰康地区青山口组一段以深湖-半深湖研究区为主,发育较厚的暗色泥岩;深湖-半深湖沉积区发育重力流成因的砂岩透镜体;研究区西侧北部发育曲流河三角洲;研究区西侧南部发育辫状河三角洲.根据沉积微相特征及分布规律预测,泰51井区、塔11～塔23井区等为青一段有利的勘探区块.

Based on the data of seism, logging and core, using principles and methods of sedimentology and seismic stratigrphy, this paper clarifys the microfacies characteristics of No.1 section of Qingshankou Formation, Taikang area of north Songliao basin. Deep lake and semi-deep lake subfacies are dominant in this area, which is featured by thick dark mudstone. There are lens-like sandstone bodies caused by sediments gravity flow developed in it. Delta developed in the west part of the studied area, sinuosity river delta developed in northwest part, and braid river delta developed in southwest part.