鄯善-丘陵交界区域三间房组沉积相特征

通过对鄯善—丘陵交界区域110口井的录井、测井及分析化验资料的综合分析,认为三间房组发育辫状河三角洲及湖相沉积。共识别出两种相、3种亚相、8种微相。三间房组沉积早期（第5砂组-第3砂组）,形成了一套进积-退积的沉积序列;伴随着湖平面下降,辫状河三角洲前缘及湖泊沉积逐渐减少,平原沉积逐渐增加,至第4砂组第1小层（S41）沉积时期,全区均为平原沉积;之后湖平面逐渐上升,辫状河三角洲平原沉积减少、前缘沉积增加;物源主要来自南部。三间房组晚期沉积（第2砂组-第1砂组）为一套进积序列,由辫状河三角洲前缘沉积逐渐演变为平原沉积,研究区除了受来自南东-南部物源的影响外,也有来自北方的沉积物源供给。

Sedimentary facies in the Sanjianfang Formation along the Shanshan-Qiuling boundary in Xinjiang

In the light of well logs and associated data,the Sanjianfang Formation along the Shanshan-Qiuling boundary in Xinjiang is believed to be made up of the braided delta and lacustrine deposits,especially the braided delta plain and front subfacies,which may be subdivided into 8 sedimentary microfacies.The Sanjianfang Formation has undergone several stages of evolution: progradational-regradational depositional sequences during the early stage,braided delta plain deposits during the middle stage,and braided de...