准噶尔盆地西北缘中拐凸起北部克下组沉积相特征  

Sedimentary facies characteristics of the lower member of Karamay formation in north Zhongguai area of northwestern margin,Junggar basin

作　　者：王德健 彭立才[2] 高军[3] 黄钰珑 李宁[3] 李守军 WANG Dejian;PENG Licai;GAO Jun;HUANG Yulong;LI Ning;LI Shoujun(College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao,Shandong 266590, China;Institute of Seismic Exploration and Development, Tsinghua University,Beijing 100084, China;Heavy Oil Development Company, Petro China Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China)

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]清华大学地震波勘探开发研究所,北京100084 [3]中国石油新疆油田分公司重油开发公司,新疆克拉玛依834000

出　　处：《中国科技论文》2018年第15期1736-1742,共7页China Sciencepaper

摘　　要：针对研究区克下组沉积相特征,运用岩芯、测井、录井和地震等资料,对研究区克下组单井相、剖面相、平面相和沉积相模式进行研究。研究区三叠系克下组在西北部物源的控制下,主要发育由西北向-东南方向展布的扇三角洲前缘亚相,发育的微相主要有水下分流河道、水下分流河道间、河口坝和席状砂。研究区克下组S6砂层组和S7砂层组沉积旋回的识别和划分显示,克下组沉积早期到晚期水体呈水进模式,向上单砂体厚度逐渐变薄,沉积物粒度变细。基于上述研究,建立了研究区扇三角洲沉积模式。Aiming at the study on some sedimentary facies characteristics, using the data of core, logging, mud logging and seismic of the lower member of Karamay formation in the study area, the single well phase, profile facies, plane facies and sedimentary facies pattern are studied. The lower member of Karamay formation (Triassic) in the study area is controlled by the provenance from northwest margin of basin, and the fan delta front subfacies is growing from northwest to southeast. Moreover, the microfacies mainly include underwater distributary channel, underwater interdistributary, mouth bar and mat sand. According to the identification and division of sedimentary cycles of the S 6 and S 7 sand group of the lower member of Karamay formation in the study area, the early and late sedimentary stage of the lower member of the Karamay formation shows a water entry pattern, the thickness of upward single sandbody gradually becomes thin and the grain of sediment becomes fine. Based on the above research, the sedimentary pattern of fan delta in the study area is established.

关 键 词：准噶尔盆地 克下组 沉积相 扇三角洲前缘 

分 类 号：TE122.3[石油与天然气工程—油气勘探]