重构曲线在地震反演中的应用

Application of reconstructing curve in seismic inversion

张鸣 宁松华

长江大学油气资源与勘探技术教育部重点实验室，湖北 荆州 434023

(Key Laboratory of Oil&Gas Resources and Exploration Technique of Ministry of Education, Yangtze University,
Jingzhou 434023, China),

地震反演是进行储层横向预测的有效方法。测井资料，尤其是声波测井资料是地震反演中的一个重要基础资料。由于声波测井资料品质的好坏是有一定条件限制的，而电阻率在每口井都有较完整的曲线，并且电阻率与速度存在统计上的关系，因此利用电阻率测井曲线进行声波曲线重构是可行的。利用Faust公式将电阻率曲线转换成声波曲线，并将其应用到地震反演中，结果证实，该方法提高了反演精度。

Seismic inversion is an effective method of reservoir horizontal prediction. The logging data, especially the sonic logging data,is an important basic data in seismic inversion. Because sonic logging curve is affected by some conditions, there is the resistivity
curve of every well and there are statistical relationships between resistivity curve and velocity, we can reconstitute a sonic logging
curve using the resistivity curve. In this paper, we transform the resistivity curve to sonic curve with Faust equation and apply the
reconstructing curve in seismic inversion, which confirms that this method can improve the precision of seismic inversion.