LH地区地震层速度的计算及分布特征

Calculation and Distribution Characteristics of Seismic Interval Velocity in LH Area

为了在钻井较少的ＬＨ 地区得到有关岩性分布的信息， 可利用速度谱资料精确地求取层速度。在利用Ｄｉｘ 公式计算该区层速度时， 采用速度精确化、倾角校正和相位校正等措施， 使计算出的层速度误差减小。计算结果表明， 在同一地层中， 靠近物源区的层速度较高， 而远离物源区的层速度则较低。

In order to acquire information about lithological distribution in the LH area where there are a few of drills, it is important to calculate exactly interval velocity with velocity spectrum In calculating interval velocity in the area with Dix formula, some measures are taken such as velocity precision and phase correction so that its errors calculated are reduced The result of calculation shows that the interval velocity close to provenance is bigger than that of far from provenance in the same layer