新和-三道桥地区白垩系巴西盖组沉积特征  

Sedimentary Characteristics of Cretaceous Baxigai Formation in Xinhe-Sandaoqiao Area

作　　者：洪才均[1] 康仁东[1] 周芳芳[1] 费剑炜[1] 房晓璐[1] 

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《新疆地质》2016年第2期230-234,共5页Xinjiang Geology

基　　金：中国石油化工股份有限公司油田部油气勘探先导科研项目(2012KTXD07)资助

摘　　要：综合运用重矿物组合、岩心沉积相特征、碎屑颗粒粒度特征及测井相分析等手段,对新和-三道桥地区巴西盖组物源及沉积相特征进行研究。建立本区巴西盖组沉积微相标志,进一步划分出辫状河三角洲前缘水下分流河道、河口坝、远砂坝、滨浅湖滩坝砂及滨浅湖泥等5种沉积微相,完成巴西盖组沉积相平面分布图,确定沉积微相与油气富集关系。结果表明,研究区巴西盖组主要为辫状河三角洲前缘及滨浅湖亚相沉积,其中辫状河三角洲前缘水下分流河道为新和地区南部及三道桥地区东北部主要沉积微相,储层物性好,是油气有利储集相带。河口坝、远砂坝及滨浅湖滩坝砂储层物性差,油气富集条件较差。Based on the characteristics of heavy mineral combination,core sedimentary facies,detrital grain’s size characteristics,log facies,the sedimentary provenance and sedimentary facies of Baxigai formation in Xinhe-Sandaoqiao areaare analyzed;Established identification marks of sedimentary facies,5 microfacies are further classified：the braided riverdelta front subaqueous distributary channels,river mouth dam,far bar,Shore shallow lake beach bar sand and Shore shallowlake mud,the distribution map on sedimentary facies of Baxigai Formation has been made,determining the relationshipbetween sedimentary microfacies and oil-gas enrichment, sedimentary facies are mainly braided river delta front andShore shallow lake,among them,braided river delta front subaqueous distributary channels is primary sedimentary microfaciesin the south of Xinhe area and in the northeast of Sandaoqiao area,it has good reservoir property,is favorable reservoirfacies belt of oil and gas,the micro-facies of river mouth dam,far bar,and and the beach bar sand have a poor reservoirproperty,which has poor conditions for oil and gas enrichment.

关 键 词：新和-三道桥地区 白垩系 巴西盖组 沉积特征 油气富集 

分 类 号：P618.13[天文地球—矿床学]