松辽盆地齐家北地区扶余油层FI1油层组沉积相及有利区预测  

Sedimentary Facies and Favorable Areas Prediction of FI1 Oil Formation of Fuyu Oil Layers in North Qijia Area of Songliao Basin

作　　者：李君文[1] 李国会[1] 张庆石[1] 杨庆杰[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆

出　　处：《地球科学前沿（汉斯）》2019年第5期341-350,共10页Advances in Geosciences

摘　　要：松辽盆地齐家北地区扶余油层石油资源潜力大,但沉积相类型及特征复杂,严重影响该区钻井成功率。作者应用钻井、岩心、测井、测试分析等相关资料,对研究区扶余油层FI1油层组的沉积微相特征及演化规律进行了详细研究。研究认为:本区发育浅水三角洲沉积,识别出三角洲平原、三角洲前缘及浅湖亚相,主要由三角洲平原分流河道、水下分流河道、分流间湾、河口坝、席状砂等微相构成;FI1-3、FI1-2沉积期以三角洲平原–三角洲前缘沉积为主,河道多交叉汇合;FI1-1沉积期以三角洲前缘为主,河道交叉汇合更为明显。结合沉积微相与油气的关系,指出研究区最有利储集砂体为水下分流河道和席状砂。依据沉积相、断裂特征及测试成果预测了4个有利区,为下步勘探开发指明了方向。Fuyu oil layers in north Qijia area of Songliao Basin is known for its great potential petroleum resources.However,the types and characteristics of the sedimentary facies are complicated to some extent.This will have a great effect on drilling success rate.By using well drilling,core describing,logging and data analyzing of well and testing,sedimentary facies distribution and evolution of FI1 oil formation have been studied carefully.The authors consider that shallow water delta of FI1 oil formation in the study area can be divided into delta-plain subfacies,delta-front subfacies and shallow lake subfacies;distributary channel,underwater distributary channel,inter distributary channel-mouth bar and sheet sandstone are the main sedimentary microfacies.Delta-plain subfacies and delta-front subfacies are the main sedimentary during FI1-3,FI1-2,and the distributary channels are crossed and joined.Delta-front subfacies are the main sedimentary during FI1-1,and the distributary channels are crossed and joined much more distinctly.The relationship between sedimentary microfacies and oil accumulation is indicated that underwater distributary channel and sheet sandstone are the main reservoir sands.Based on sedimentary facies,fracture characteristic and test results,four favorable areas are predicted finally.The study results can provide direction for the next exploration and development.

关 键 词：松辽盆地 齐家北地区 FI1油层组 沉积相 有利区 

分 类 号：P6[天文地球—地质学]