潜江凹陷潜三段-潜四上亚段沉积相研究

根据古地形、岩心观察、测井曲线等特征．认为潜江组发育三角洲、淡一半咸水湖、盐湖等沉积体系。潜江凹陷碎屑物来源比较单一．主要来自于西部及北部。以西部荆门物源为主，汉水、乐乡关及永隆河物源次之。总体具有北部单向远物源、西强东弱、继承性供给的特点。研究区总体上。自北西向南东方向，由三角洲沉积体系变为淡-半成水滨浅湖沉积体系．再变为盐湖沉积体系。潜江凹陷砂体主要呈北西方向展布是岩性油藏发育的有利区带。

Study on Sedimentary Facies of the Upper Members in Eq_3-Eq_4 of Qianjiang Depression

The features of ancient landform,core observation,logging curve showed that different types of sedimentary systems were developed in Qianjiang Formation of Qianjiang Depression,such as delta,freshwater-brackish lake,saline etc.The sources of depression clastic materials were unitary,and most of them came from the west and north.The provenance was mainly from Jingmen in the west,and then from Han River,Lexiangguan and Yonglong River.There is a distal single directional sedimentary source in the north of Qian...