三江-中阿穆尔盆地早白垩世沉积特征分析

Sedimentation features and its evolution of the Sanjiang-Middle Amur basin in Early Cretaceous

三江-中阿穆尔盆地跨中俄边界,该盆地面积较大,具有较好的油气资源潜力。结合测井及地震资料,本文根据岩芯和露头描述、粒度分析,开展了沉积研究。结果表明,盆地主要发育河流相、扇三角洲相、湖泊相与湖底扇相、海相沉积相类型。在此基础上,进一步研究了三江-中阿穆尔盆地早白垩世凡兰吟和欧特里夫-阿普第时期的沉积相,探讨了早白垩世贝里阿斯-阿尔必时期的沉积演化,盆地西南部(中国境内)自下而上发育滴道组、城子河组、穆棱组、东山组,盆地东北部(俄罗斯境内)自下而上发育戈林组、彼奥涅尔斯克组、皮万组、戈尔诺普罗托卡组和斯特列尔科沃组。本研究不仅为三江-中阿穆尔盆地进一步油气勘探部署提供了参考,也为中国境内黑龙江东部残留的三江盆地的原型盆地研究提供了重要依据。

Sanjiang-Middle Amur basin spans the China-Russian boundary. The basin has a large area and has a good potential for oil and gas resources. Integrating well logging and seismic data, we conducted sedimentary study via core and outcrop description as well as,grain size analysis. The results show that the basin mainly develops fluvial facies, （fan） delta facies, lacustrine facies and sublacustrine facies, and marine facies sedimentary facies. On this basis,the sedimentary facies of the Veronican and Ortef-Apudi periods in the Early Cretaceous in the Sanjiang-Middle Amur basin were further studied. In the southwestern part of the basin （in China） included the Didao Formation,Chenzihe Formation, Muling Formation, and Dongshan Formation develop from the bottom to the top; while the Gorin Formation, Pionersk Formation, Pivansky Formation,Gornoprotoksky Formation and Strelnikovsky Formation develops from the bottom to the top of the basin （in Russia）. This study not only provides a reference for further oil and gas exploration and deployment in the Sanjiang-Middle Amur basin,but also provides an important basis for the reunification of the Sanjiang basin in the eastern part of Heilongjiang province,