银川盆地古近系清水营组生烃潜力分析  

Hydrocarbon generation capacity analysis of Cenozoic Erathem,Yinchuan Basin

作　　者：郝志伟[1,2] 王金铎[1] 崔红庄[1] 韩秀艳[1] 曹力伟[1] 何宗昊[1] 

机构地区：[1]中国石化股份胜利油田分公司西部新区研究中心,山东东营257000 [2]中国石油大学(北京)资源与信息学院,北京102249

出　　处：《油气地质与采收率》2011年第5期31-33,113,共3页Petroleum Geology and Recovery Efficiency

摘　　要：银川盆地油气勘探程度低,仅在1965—1970年间钻探了3口参数井,但未揭示盆地内古近系清水营组中、下部及前古近系的岩性和地化特征,无法对银川盆地整体生烃潜力进行评价。从清水营组露头分析入手,结合盆地沉积特征、已钻井岩性组合及地震反射特征,对未被揭示的古近系沉积环境、岩性组合进行了预测;结合速度谱等地球物理资料对清水营组生烃潜力进行了预测。推测银川盆地新生界具有较好的生烃潜力,同时指出对于该盆地的评价还存在一些不利因素,其生烃情况还需利用钻井、地化资料进一步进行揭示、验证。Located at the east edge of Gansu Corridor,the exploration degree of Yinchuan Basin is very low.From 1965 to 1970, only three parameter wells are drilled,of which well Yincan 1 reveals that the Oligocene Qingshuiying formation(the upper part) has certain hydrocarbon generation capacity.The overall hydrocarbon generation capacity of Yinchuan Basin can not be evaluated comprehensively,for the middle and lower parts of the three wells are not revealed.This paper starts with sedimentation analysis of Qingshuiying formation,and then predicts the sedimentary environment and lithological combination of the unrevealed Tertiary formation by means of lithological combination and seismic reflection characteristics of the drilled lithological combination,and then proposes the hydrocarbon generation capacity of Neogene Qingshuiying formation by velocity spectrum data.

关 键 词：地震反射 沉积特征 生烃潜力 清水营组 银川盆地 

分 类 号：TE111.1[石油与天然气工程—油气勘探]