东辛油田永1区块砂砾岩储层岩性识别方法研究

砂砾岩油藏作为隐蔽油气藏的主要类型日益受到重视,但由于砂砾岩为碎屑流搬运、杂乱堆积成因的复合体,岩性识别难度大。以东辛油田永1区块砂砾岩油藏为例,综合应用岩心、测井、成像等资料开展分析,明确了岩石相类型,识别出三大类十一种岩石相;通过开展岩性识别方法研究,建立了综合测井成像资料识别岩石类型的标准,明确了不同岩石类型的识别标志和特征。利用该标准识别岩心和录井资料吻合率在90%以上。

Lithology identification method of glutenite reservoirs in Yong-1 block of Dongxin oilfield

As the main type of subtle reservoirs,glutenite reservoir becomes more and more important.However,the lithology identification is difficult because the glutenite is of debris flow and messy accumulation.By taking glutenite reservoirs in Yong-1 block of Dongxin oilfield as example,with integrated application of core,logging,imaging and analytical data,three categories of eleven kinds of rock phase were identified.Through further research on lithology identification methods,the standards for core and logging identification were established by using integrated logging data,and the agreement rate can be higher than 90%.