碳氧比曲线高分辨率处理方法研究

he Carbon Oxygen logging, as a kind of effective methods of measuring residual oil saturation in cased hole, has been widely used, but because of its limited capacity for vertical resolution, the application is subject to certain restrictions. By incorporating with actual conditions to establish the actual Carbon Oxygen logging physical model, this paper used Monte-Carlo Simulation method to determine the long and short spacing response equations for dual spacing carbon oxygen logging, and used the best Coherence method to design the Chebyshev filter. By means of this filter, this paper adopted deconvolution method to treat the high resolution with Carbon Oxygen logging curve. Theoretical experiment and the treatment of field C/O logging data show, this method can well suppress noise, and can obviously improve logging curve resolution, the logging resolution was increased from traditional no better than 0.8 m to 0.6 m.