应用测井储层因子预测变质碎屑岩裂缝-孔隙型储层--以海拉尔盆地贝尔凹陷基岩为例  

Prediction of fracture-pore reservoirs in metamorphic clastic rocks using logging reservoir factors:A case study of basement in Beier Sag,Hailar Basin

作　　者：李娟[1,2] 郑茜[1] 孙松领[1] 张斌[1] 陈广坡[1] 何巍巍[1] 韩乾凤[1] LI Juan;ZHENG Xi;SUN Songling;ZHANG Bin;CHEN Guangpo;HEWeiwei;HAN Qianfeng(PetroChina Research Institute of Petroleum Exploration&Development-Northwest,Lanzhou 730020,China;Key Laboratory of Reservoir Description,CNPC,Lanzhou 730020,China)

机构地区：[1]中国石油勘探开发研究院西北分院,兰州730020 [2]中国石油天然气集团公司油藏描述重点实验室,兰州730020

出　　处：《岩性油气藏》2021年第6期165-176,共12页Lithologic Reservoirs

基　　金：中国石油天然气股份有限公司科技项目“海拉尔盆地富油气断陷综合研究与有利区带评价”(编号:101017kt1604003x20)资助。

摘　　要：以海拉尔盆地贝尔凹陷变质碎屑岩基岩为例,基于测井、地震及测试生产数据,考虑岩性控储因素与基岩潜山的纵向分带等特征,应用综合概率法获取测井储层因子定量表征裂缝-孔隙型储层,结合地震波形指示反演预测裂缝-孔隙型储层分布。结果表明,综合概率法获得的测井储层因子较单一电阻率模型能更好反映裂缝-孔隙型储层的发育程度,与基于相控理论的地震波形指示反演方法结合实现基岩潜山裂缝-孔隙型储层的定量预测。当储层预测值大于阈值时,储层发育,值越大,储层发育程度越高;岩性和原始沉积地层的层状特征影响有效储层在剖面上呈现短丘、豆状的准连续层状分布形态。优质储层发育受基岩垂向分带、断裂和构造位置的控制,好储层主要发育在断裂带附近,以及背斜、断背斜、断块等构造高部位。中—弱风化带储层最好,强风化带次之,未风化基岩内幕段局部发育储层。研究结果在变质碎屑岩裂缝-孔隙型储层预测方面有较大的应用推广价值。Taking the basement reservoir of metamorphic clastic rock in Beier Sag,Hailar Basin as an example,considering the characteristics of lithology controlling reservoir and vertical zonation structure,based on well logging,seismic data and production test data,comprehensive probability method was used to obtain logging reservoir factors to quantitatively characterize fracture-pore reservoirs,and to predict the distribution of the reser‐voirs by combining seismic motion inversion.The results show that the logging reservoir factor can better reflect the reservoir development than the single well logging resistivity model.The combination of the seismic motion inversion based on phase controlling theory and logging reservoir factor is effective to predict the fracture-pore reservoir quantitatively.If the predicted value is greater than the threshold value,the reservoir develops.The larger the predicted value is,the more developed the fractured reservoir is.The lithology and original sedimentary laminar formation result in the effective reservoirs in the form of quasi-continuously layer as the shape of short mounds or beans in section.The high-quality reservoirs are controlled by vertical zonation,fault system and structural loca‐tion.The good reservoirs overall distribute near faults zone,anticline,faulted anticline,fault block or other structural high position.The reservoir properties in the moderately-weakly weathered facies are the best,the strongly weathered facies is medium,and the reservoirs in the unweathered facies are only locally developed.The research results have great application and popularization value for the prediction of fracture-pore reservoir in basement with metamorphic clastic rock.

关 键 词：测井储层因子 地震波形指示反演 裂缝-孔隙型储层 定量预测 变质碎屑岩 古潜山 贝尔凹陷 

分 类 号：TE122[石油与天然气工程—油气勘探]