重、磁、电综合物探方法在雪峰山西侧油气远景区地质调查中的应用  

The application of integrated gravitational,magnetic and electrical geophysical methods to geological exploration in oil and gas prospecting area on the west side of the Xuefeng Mountain

作　　者：屈挺 刘建利 李磊 尹虎 申丽 

机构地区：[1]陕西省地质矿产勘查开发局物化探队,陕西西安710043 [2]陕西省矿产资源勘查与综合利用重点实验室第一研究室,陕西西安710054

出　　处：《物探与化探》2016年第3期452-460,共9页Geophysical and Geochemical Exploration

基　　金：中国地质调查局油气地质调查项目(1212011220747)

摘　　要：通过对雪峰山西侧地区震旦系—下古生界海相层系开展1∶5万高精度重力、磁法、大地电磁测深综合物探剖面测量,结合钻井、地质资料及物性统计特征,对获取的重、磁、电资料进行联合正、反演解释,解译了断裂构造及地层空间展布特征,定量解释了地层的分布、埋深及厚度,预测了油气有利储集构造带。研究结果表明,在雪峰山西侧的复杂地质条件和人文、工业严重干扰下,重、磁、电方法组合能够最大程度地减少地质解译的多解性,较准确地查明了该区震旦系—下古生界海相层系分布及褶皱、断裂、局部构造,为该区油气远景评价发挥了重要作用。With 1 ∶ 50 000 high precision gravity,magnetic and magnetotelluric sounding,the authors measured the Sinian-Lower Paleozoic marine strata on the west side of the Xuefeng Mountain.Combined with the characteristics of drill hole,geological data and physical property statistics,the authors made positive and negative interpretations on the acquired gravitational,magnetic and electrical data,thus interpreting the fracture structure and strata spatial distribution characteristics,explaining the distribution of strata,buried depth and thickness and predicting the favorable oil and gas reservoir structural belt.The results show that,with the disturbance of complex geological settings,human activities and industries,the integrated gravitational,magnetic and electrical geophysical methods can maximally reduce the uncertainty of geological interpretation and accurately identify the distribution,fold,fault and local structure of Sinian-Lower Paleozoic marine strata in this area,and thus can play a vital role in oil and gas prospect evaluation.

关 键 词：重磁电综合物探方法 震旦系—下古生界 油气有利储集构造带 

分 类 号：P631[天文地球—地质矿产勘探]