高精度三维地震解释技术及在孤家子气田的应用

The 3-D high precision seismic interpretation technique and its application in Gujiazi gas field

中国石化新星石油公司东北石油局,长春130062

The Northeast China Petroleum Bureau, SINOPEC, Changchun

高分辨率三维地震勘探,能够精细查明地下地质特征,同时也对传统的地震资料解释方法技术提出了挑战。本文在对影响解释精度主要环节分析的基础上,通过对地震资料解释常规方法,从层位标定、地震属性分析、波阻抗反演、构造解释等方面作改进,发展了一套高精度三维地震解释技术,包括:小波变换合成地震记录、自适应横向非均匀分析、多尺度约束反演(MBCI)、真三维可视化解释。

D high resolution seismic exploration provides a great potential to delineate the subsurface features more clearly, at the same time, it presents a big challenge to the conventional interpretation techniques. Based on the analysis on crucial steps involved in data interpretation,we proposed a series of improvement to the interpretation methods including event calibration, multiple seismic attributes analysis, acoustic impedance inversion, structure description etc. with wavelet transformation, self adapted transverse heterogeneity characterization, multi scale broadband constrained inversion and 3 D volume visualization interpretation which constitute a new version of 3 D seismic data interpretation when combined together. Using this set of interpretation techniques in Gujiazi gas field,we got satisfying results.