复杂构造和低信噪比页岩层资料处理方法 / Data processing method for complex structure and low SNR in shale beds
- Resource Type
- Academic Journal
- Authors
- 陈昌武; Chen Changwu
- Source
- 中州煤炭. (9):130-142
- Subject
- 页岩气储层
复杂构造
提高信噪比
多聚焦成像
叠前时间偏移
shale gas reservoir
complex structure
improve SNR
multi focus imaging
prestack time migration
- Language
- Chinese
- ISSN
- 1003-0506
皖江地区沉积多套页岩地层,是良好的页岩气储气层。页岩与围岩波阻抗较小,且褶曲与断裂构造发育,地形复杂,地震勘探激发、接收条件较差,原始资料信噪比较低,叠前使用多域去噪技术,分类、分频对不同数据集噪声进行精细分析和有效去噪。对低信噪比资料在资料处理各个阶段使用多个模块逐步压制各类干扰和提高信噪比,利用多聚焦成像技术和叠前时间偏移处理方法对复杂地质构造成像,可取得明显效果。
There are many sets of shale sedimentary strata in Wanjiang region which is good shale gas reservoir.Due to the influence of folds and faults and the influence of complex topography and small seismic wave impedance,SNR of raw seismic data is relatively low. Before stack,using multi domain denoising technology and classification,frequency division of the different data sets of noise analysis and effective denoising and using multiple modules at each stage of data processing can improve the SNR.The use of multi focus imaging technology and pre stack time migration processing method can achieve significant effects in complex geological structure imaging.