大情字井地区青一段沉积微相特征研究

Study on characteristics of sedimentary microfacies in Qing1 member in Daqingzi jing area

以大情字井油田青一段为研究重点,综合运用地震、测井、录井、试油等资料,依据高分辨率层序地层学理论,对大情字井地区的青一段层序地层进行了详细地划分,并以此为基础进行了多级次基准面旋回的等时地层对比,建立青一段的高分辨率层序地层对比格架。通过大量的岩心观察,准确识别相标志,确定了三角洲前缘沉积的微相类型,精细描述了微相的特征,明确了砂体的分布规律,为油田的持续高效开发提供了重要的依据。

Based on the theories of high resolution sequence stratigraphy and integrated with seismic, geophysical log- ging, well logging and testing data, the stratigraphic sequence of target formation Qingl member is analyzed particularly that is contributed to the isochronous strata correlation in multiple datum cycles and consequently stratigraphic framework of Qingl member is built in Daqingzi jing area. With a great amount of core analysis and exact identification of microfacies signs, the microfacies types of delta front subfacies are identified and the characteristics of microfacies are described delicate- ly that makes the distribution of sand bodies clear, all of which provide strong foundation for the continuous and efficient de- velopment in the area.