大庆石油地质与开发2018，Vol.37Issue(1)：40-48,9.DOI:10.19597/J.ISSN.1000-3754.201707037
松辽盆地四方坨子地区青山口组多级层序下辫状河三角洲沉积
BRAIDED RIVER DELTA SEDIMENTATION UNDER THE MULTI-LEVEL SEQUENCES FOR QINGSHANKOU FORMATION IN SIFANGTUOZI AREA OF SONGLIAO BASIN
摘要
Abstract
The exploratory potential of the lithological compound oil reservoirs in Sifangtuozi area is great and the benefit reserves in Gaotaizi and Saertu oil reservoirs have already been submitted.However,there exits the weak researches on the strata and sedimentation,the peripheral exploratory progress of the reserves blocks is still slow.Based on the data from 347 exploratory and development wells,combined with the core observation,the classification of the multi-level sequences for Qingshankou Formation and the analysis of the sedimentary microfacies of the braided river delta were carried out.The study shows that according to the identifiable tectonic changed surface,abrupt lithological facies interface and depositional conversion interface etc.,Qingshankou Formation can be divided into one Ⅱ-order sequence (SSQqn),three Ⅲ-order sequences (SQqn1,SQqn2,SQqn3) and twelve V-order sequences (RST);the sedimentary system of the braided river delta,shore shallow lake,hemi-deep lake and deep lake was developed in Qingshankou Formation period,and the former facies is characterized by multi-phrase alternated forward rhythm and backward rhythm,wide braided river belts,frequent diversion of the channels and the mud balled by the sand etc..Integrated with the old wells rechecking,K1qn1 (Well F84,Well F120),K1qn2 (Well F52,Well F79) and Sand GroupV-Ⅷ of K1qn3 (Well F40,Well F81) are designed as the next exploratory targets.关键词
四方坨子/青山口组/层序地层/辫状河三角洲/沉积/松辽盆地Key words
Sifangtuozi/Qingshankou Formation/sequence stratum/braided river delta/sedimentation/Songliao Basin分类
能源科技引用本文复制引用
樊奇,樊太亮,田继军,李乐,林爽..松辽盆地四方坨子地区青山口组多级层序下辫状河三角洲沉积[J].大庆石油地质与开发,2018,37(1):40-48,9.基金项目
国家科技重大专项“松辽盆地南部岩性地层油气藏富集规律与区带目标优选评价(2011ZX05001-002)、中国石油科技专项“吉林探区第四次资源评价”(2013E-050203). （2011ZX05001-002）
