Multichannel Deconvolution Technology And Its Application In Electrical Logging Data Processing

At the present age, when the oil-gas reservoir is increasingly decreasing, the logpresentation high resolution technology of handling, used for thin reservoir exploration,gets more and more attain of researchers. As one of the log presentation high resolutiontechniques of handling, the deconvolution technology plays an important part indistinguishing of thin reservoir in the method of electrical logging. In this paper, basedupon the theory of electrical logging and digital signal process, the deconvolutiontechnology of the recording apparent conductivity of electrical logging instrument islucubrated, from the four side of time domain, frequency domain, single track andmultichannel.Firstly, the specific algorithm and formula of least meansquare deconvolution andkalman deconvolution are provided in this paper, on the theory basis of single leastmeansquare deconvolution and kalman deconvolution technology in time domain, and bemade simulation analysis in Matlab simulation software.Secondly, the specific algorithm and formula of single least square deconvolutionand multichannel least square deconvolution are elaborated in this paper, on the theorybasis of least square deconvolution technology in time domain, and be made simulationanalysis in Matlab simulation software.Finally,considering the deconvolution technology of electrical logging dataprocessing in frequency domain, the specific algorithm and formula of single frequencydeconvolution and multichannel frequency deconvolution are proposed in this paper, onthe theory basis of frequency deconvolution technology in time domain, and be madesimulation analysis in Matlab simulation software.The simulation results of Matlab software show that, all of the algorithms proposedin this paper get good effects in electrical logging data processing and improvelongitudinal resolution of electrical logging presentation, and availably restore trueformation conductivity from the recording apparent conductivity of electrical logginginstrument.