一种解决HJ黄土塬区低信噪比问题的处理方法  

A processing method for Low S/N Seismic data in Loess Tableland in HJ area

作　　者：李美[1] 赵玉华[1,2] 王永刚[1] 许建权[3] 

机构地区：[1]长庆油田分公司勘探开发研究院,西安710018 [2]低渗透油气田勘探开发国家工程实验室,西安710018 [3]中国石油勘探开发研究院西北分院,兰州730020

出　　处：《地球物理学进展》2014年第2期767-773,共7页Progress in Geophysics

摘　　要：HJ地区属于鄂尔多斯盆地南部典型的巨厚黄土塬区,一直是中生界石油勘探的热点地区.但地表条件复杂多变、静校正问题突出、干扰波类型多、信噪比低的问题仍然是制约该区地震资料品质的难点.本文从综合静校正、叠前保幅去噪及共反射面元叠加等关键技术展开研究,总结出一套逐步解决低信噪比问题的处理思路.处理后的地震剖面实现了古地貌刻画、小幅度构造识别、含油砂体地震预测的目标,为中生界石油勘探开发提供了有力的技术支撑.HJ area belongs to the typical loess plateau in the south of Erdos Basin,which is always the hot region of Mesozoic oil exploration.But the seismic data quality is still restricted by the difficulties such as the complicated surface conditions,severe statics,much types of noises and low S/N ratio. Setting to study the key technology such as composite statics correction, the amplitude preserved denoising on prestack seismic data and common reflection surface stack, an processing idea to resolve the problem of low S/N step by step was summarized.Then the paper achieved optimum stack result.Seismic section realized the goal of palaeogeomorphology describtion,low amplitude structure identification and oil sandstone seismic prediction,which provides profitable support to the Mesozoic oil exploration.

关 键 词：鄂尔多斯盆地 黄土塬 中生界 信噪比 静校正 叠前保幅去噪 共反射面元叠加 古地貌 小幅度构造 含油砂体 

分 类 号：P631[天文地球—地质矿产勘探]