CAJ | 학술논문

鄂博梁Ⅲ号构造为柴达木盆地大型构造之一，其中仅新近系下油砂山组圈闭面积即可达470, km2。运用近3年来在该构造东西高点钻探的鄂深1、鄂深2及鄂7共3口探井的最新资料，通过岩石学、古生物学及地球化学等综合分析，对鄂博梁Ⅲ号构造沉积环境演化和物源方向进行了系统研究，取得了不同于前人的新认识。鄂博梁Ⅲ号构造新近纪沉积环境自上干柴沟期（N1）到狮子沟期（N23）是一个湖进、水体不断加深的沉积演化过程，与前期所认识的湖泊收缩、水体不断变浅的结论不同。鄂博梁Ⅲ号构造新近系沉积碎屑主要来自于阿尔金山物源区，自下而上具有较强的继承性，浅部地层受冷湖方向物源的影响而具有混源的特点。该研究取得的新成果为该区进一步勘探部署提供了理论依据，并取得了一定的勘探成效。
악박량Ⅲ호구조위시체목분지대형구조지일，기중부신근계하유사산조권폐면적즉가체470, km2。운용근3년래재해구조동서고점찬탐적악심1、악심2급악7공3구탐정적최신자료，통과암석학、고생물학급지구화학등종합분석，대악박량Ⅲ호구조침적배경연화화물원방향진행료계통연구，취득료불동우전인적신인식。악박량Ⅲ호구조신근기침적배경자상간시구기（N1）도사자구기（N23）시일개호진、수체불단가심적침적연화과정，여전기소인식적호박수축、수체불단변천적결론불동。악박량Ⅲ호구조신근계침적쇄설주요래자우아이금산물원구，자하이상구유교강적계승성，천부지층수랭호방향물원적영향이구유혼원적특점。해연구취득적신성과위해구진일보감탐부서제공료이론의거，병취득료일정적감탐성효。
Eboliang Ⅲ structure is one of the macrostructures in Qaidam Basin with trap area up to 470, km2 in the Neogene Xiayoushashan Formation.In this paper,the authors studied the systematically the sedimentary environment evolution and provenance direction in Eboliang Ⅲ structure by using the new data of Wells Eshen 1 ,Eshen 2,and Eshen 7,which were drilled in succession at the east and west structural high points in recent three years.By synthetic analysis with petrology, palaeontology and geo-chemistry,some new points about the sedimentary environment evolution and provenance direction were obtained.The structure from the Shangganchaigou Age to Shizigou Age was under a deposition process with constantly deepening water,which was completely opposite to the previous viewpoint.Altun Mountains provenance provided main sedimentary clastics for Eboliang Ⅲ Structure.On this basis,the single well and multi well analysis has been developed to confirm the sedimentary evolution process,providing a theo-retical basis for further exploration and deployment,and obtaining the corresponding exploration effect.