The System Of The Comprehensive Explanation And Evaluation Based On Log Data

Since the birth of well logging, a lot of researches have been carried out on log data at different points of view and methods. Many relative theories, methods and technology are brought forward, for further research on the comprehensive explanation and evaluation of logging data.Based on the achievements of other researchers, this paper combined many methods and technology on explanation and evaluation of log data innovatively and pertinently in the comprehensive explanation and evaluation. The paper presents the correction methods of gasometry data and geochemistry data and quantificational methods of log data, and then this make the analytical results more reliable with these methods. It argues the demarcations of the liquid property, and then judge the oiliness levels from geochemistry data. These explanation models of gasometry, geochemistry, rock fragment and etc are set up. The model of comprehensive explanation and evaluation of the well logging data are set up too. Finally, the software system for the comprehensive explanation and evaluation of the well logging data is designed successfully based on research before.The paper presents the view of combination of the log data and well logging data, and then recognizes reservoir bed, finding reservoir and confirming the location of oil and gas. Moreover, it presents the treatment's optimization of single item explanation and evaluation model with Fisher and gray theory, and then gets the best results; this can improve the accordance rate and accuracy.Research Achievements:1. The correction methods of gasometry data and geochemistry data and quantificational methods of well logging data.2. The demarcations of the liquid property.3. The explanation models of gasometry, geochemistry, rock fragment and etc are set up.4. The software system for the comprehensive explanation and evaluation of the well logging data is designed successfully.