综合物探技术在河套盆地深层油气勘探中的先导性应用:以临河坳陷为例
索孝东 , 张锐锋 , 石东阳 , 杨俊 , 杨战军 , 张宇飞 , 李燕丽 , 王泽丹
地球科学 ›› 2023, Vol. 48 ›› Issue (02) : 749 -763.
综合物探技术在河套盆地深层油气勘探中的先导性应用:以临河坳陷为例
Application of Comprehensive Geophysical Prospecting Technology in Deep Oil and Gas Exploration in Hetao Basin: Taking Linhe Depression as an Example
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河套盆地勘探程度低,有利勘探层系埋藏深,40余年未获突破,为实现河套盆地油气勘探快速突破,整体开展了高精度重磁和时频电磁勘探工作. 针对盆地主力生烃区不清、构造难以厘定的问题,应用基于有限井震资料松约束多界面反演、基底背景密度法正演剥层为核心的深层目标重力异常提取技术,对临河坳陷的地质结构重新进行了认识,快速圈定了主力生烃凹陷分布,指出坳陷北部巴彦淖尔凹陷的淖西深洼槽为最有利的生烃区,新发现黄河断陷槽及淖西深洼槽周缘分布的中央兴隆断垒式潜山披覆构造带、吉西凸起东翼鼻状潜山披覆构造带等近源油气有利勘探目标,引导了地震针对性快速高效部署和钻探. 针对成藏目标不清、突破井位难以落实的问题,提出并应用了基于井震模拟目标层靶向采集、电磁井震联合约束反演等提高深层勘探分辨率及油气储层预测精度的时频电磁勘探配套技术,快速锁定了JHZK2井、吉华2x及临华1x等有利目标靶区,为河套盆地油气勘探高效突破发挥了关键先导性作用,为类似复杂区特别是盆地深层油气勘探提供了成功范例与技术方法.
高精度重力多界面约束反演 / 时频电磁 / 目标层靶向采集 / 电磁井震联合约束反演 / 地球物理
high precision gravity survey / loosely constrained gravity multi interface inversion / time-frequency electromagnetic survey(TFEM) / target layer targeted acquisition / electric-magnetic-well-seismic joint constrainted inversion / geophysics
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中国石油集团公司课题:物探采集处理解释关键技术研究——复杂区深层及火成岩重磁电震一体化关键技术研究(2021DJ3706)
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