摘要
在实际生产中,大多数测井曲线都含有与地层性质无关的噪声信号,基于这一特征,提出了采用小波变换新方法进行处理。该方法以一维小波去噪方法和小波包去噪方法为主,通过对密度孔隙度曲线和中子孔隙度曲线同时进行处理,减少噪声信号的部分值,恢复真实信号,对处理结果进行综合分析表明,经小波变换后的曲线噪声得以压制,质量得以提高,能更好地与其它测井曲线配合进行综合解释,能准确预测气层的层数、位置,为天然气开发提供可靠的依据。
There exist noise signals independent, of strata properties in most well logs in field oil production. The wavelet transform technique applied for removal treatment of the noise signals is presented based on the feature. Using this technique mainly including noise-removal methods of dimensional wavelet and wavelet package, a part of noise signal values could be restored to in-situ original ones by density-porosity logs and neutron porosity logs processing. The results show that the noise curves have been inhibited after the processing of wavelet transform. With higher quality of logs, it allows to make comprehensive interpretation together with rest of well logs, provide more proper prediction of related numbers and locations of gas layers, and grasp reliable bases for natural gas exploitation.
出处
《新疆石油地质》
CAS
CSCD
2004年第4期431-432,共2页
Xinjiang Petroleum Geology
