鄂尔多斯盆地环江地区罗330区长8_2油藏储层评价

Reservoir Evaluation of Chang 82 Reservoir in Luo330 Block of Huanjiang Area of Ordos Basin

针对罗330区长82油藏致密储层,综合利用剖面观察、岩心观察、岩心分析、化验资料统计分析、测井资料精细解释等方法进行沉积与储层特征研究,识别出该区为三角洲前缘亚相沉积,水下分流河道砂体为主要储集体。结果表明:该油藏具有低孔特低渗特征,评价为Ⅱ类中孔细喉型储层。

Comprehensive geological method,combining geological outcrops observation,core observation,core analysis data,well logging data with fine interpretation were used to study sedimentary and reservoir characteristics of the tight reservoir in Chang 82 reservoir,Luo 330 oil block.Research shows sedimentary facies in Chang 82 is delta-front facies and main reservoir is underwater distributary channel sand body.The reservoir is evaluated as low-permeability,type II medium pore and fine throat reservoir.This conclusion has laid a solid foundation for the development of the study area to improve the single well production and effectively use the geological reserves in the area .