鄂尔多斯盆地堡子湾地区延长组长6储集砂体发育特征及有利区带预测  

Development characteristics of reservoir sand bodies and advantageous region prediction in Chang6 oil-bearing layers of Yan-chang Formation,Baoziwan area

作　　者：王卫红[1] 田景春[1] 李君文[2] 陈建华[3] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都610059 [2]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]成都理工大学信息工程学院,四川成都610059

出　　处：《油气地质与采收率》2008年第5期27-30,113,共4页Petroleum Geology and Recovery Efficiency

基　　金：四川省重点学科"构造地质学"建设基金项目(SZD0408)

摘　　要：为寻找鄂尔多斯盆地堡子湾地区的有利储层,对研究区长6沉积时期储集砂体展布特征及成因类型进行了研究。结果表明,研究区长63—长61沉积时期砂体的厚度、分布范围、横向稳定性及连续性逐渐变好,即长61沉积时期三角洲前缘砂体相对发育,为有利储层的发育层位;识别出水下分流河道、叠置水下分流河道、河口坝、叠置河口坝、水下分流河道及河口坝组合6种沉积成因类型砂体。在此基础上,根据油藏分布和富集主控因素,结合测井资料,进行了有利区带预测,马家山地区及姬塬—堡子湾一带为Ⅰ级有利勘探区;冯地坑—史家湾及耿76—耿143井一带为Ⅱ级有利勘探区。In view of the exploration and development prospects of Baoziwan area,Ordos Basin,the distributing feature and of Chang6 reservoir sand bodies were researched to seek favorable reservoir.The results show that thickness,distribution range,horizontal stability and continuity turned better from Chang63 to Chang61 sedimentary period,and the favorable reservoir developed with relatively developed delta front sand bodies in Chang61 sedimentary period.Six genetic types of sandstone were identified,including subaqueous distributary channel,superimposed subaqueous distributary channel,channel-mouth bar,superimposed channel-mouth bar,subaqueous distributary channel and channel-mouth bar association sandstone.Combined with the logging data and the main controlling factors of enrichment and distribution of oil reservoirs,four favorable exploration areas have been predicted in the Chang61 layer,and Majiashan and Jyuan-Baoziwan area are the best favorable prospecting regions,secondly are Fengdikeng-Shijiawan area and Geng 76-Geng 143 well block.

关 键 词：延长组 储集砂体 有利区带 堡子湾地区 鄂尔多斯盆地 

分 类 号：TE112.21[石油与天然气工程—油气勘探]