延长-延川探区东部上古生界储层沉积特征研究

Sedimentary Characteristics of Upper Paleozoic Reservoirs in the Eastern Yanchang-Yanchuan Exploration Area

通过上古生界岩心岩色、组分、粒度、分选性、岩心层理与测井曲线响应特征识别研究,综合分析认为石盒子组主要发育湖泊三角洲沉积体系、山西组发育潮控三角洲体系、本溪组发育障壁海岸沉积体系。

Through the identification of core color,composition,grain size,sorting property,core bedding and response characteristics of logging curve in Upper Paleozoic,the authors have studied the characteristics of core color,composition,grain size,sorting property,core bedding and logging curve.Comprehensive analysis shows that Shihezi Formation mainly develops lake delta sedimentary system,Shanxi Formation develops tidal delta system and Benxi Formation develops barrier coastal sedimentary system.