煤炭工程 ›› 2013, Vol. 45 ›› Issue (12): 81-83.doi: doi:10.11799/ce201312029

• 研究探讨 • 上一篇    下一篇

测井约束地震约束反演预测采区地层压力研究

张凯1,邹冠贵2   

  1. 1. 神华集团有限责任公司
    2. 中国矿业大学(北京)
  • 收稿日期:2013-06-12 修回日期:2013-08-27 出版日期:2013-12-10 发布日期:2013-12-10
  • 通讯作者: 张凯 E-mail:zhangk@shenhua.cc

Seismic restraint inversion method to predict the strata pressure

  • Received:2013-06-12 Revised:2013-08-27 Online:2013-12-10 Published:2013-12-10

摘要:

根据地层超压的预测理论和Fillippone压力预测公式,结合实际数据,统计分析层速度与地层压力的关系并对Fillippone公式进行改进,利用测井约束反演方法获取层速度,预测勘探区内的地层压力异常。结果表明,层速度与地层压力符合指数关系,相关系数在0.8以上。采用测井约束反演方法,综合了测井资料和地震资料得到目的层的层速度,预测得到的地层压力在总体上体现出了与深度的密切关系,同时也体现了构造作用等地质因素引起的局部变化。与传统方法根据压力梯度计算结果相比,该方法更接近真实的地质情况,预测结果与实际数据相比误差在5%以内。

关键词: 地层压力, 层速度, Fillippone公式, 测井约束反演, 水害防治

Abstract:

According to the prediction theory of strata pressure and Fillippone formula, the relationship of phase velocity and strata pressure is analyzed statistically with empirical data, which is used to improve the Fillippone formula. Then using well logging restraint inversion to obtain the phase velocity to predict the strata pressure of the exploration area. The results show that the relationship of phase velocity and strata pressure is accorded with the index, which is above 0.8. The well logging restraint inversion method is combined well logging data with seismic data, so that the phase velocity is closer to the real geological conditions. The predicted strata pressure not only reflects close relationship with depth in general, but also reflects some changes in the local by geological factors such as tectonism. Compared to the traditional method based on the strata pressure gradient, this method has higher accuracy, which error is less than 5%.

Key words: strata pressure, interval velocity, Fillippone formula, well logging restraint inversion, water disaster prevention