Logging Sequence Comparison And Lithologic Identification Study On Deep Sandy-conglomerate Of Dongying Northern Zone

Deep sand-conglomerate reservoir is one of the exploration and development major positions in recent years, but also the main battleground of oil production capacity to replace. Sand-conglomerate is a special lithology. By compare with the sandstone reservoir, it has a special diagenesis and porosity development of the law. Thus, for the study of deep-sand-conglomerate stratigraphic sequence comparison and lithology identification methods is necessary, and can provide favorable geological information for further exploration and development.In this paper, deep sand-conglomerate of Dongying northern zone as the research object, and stratigraphic sequence comparison and lithologic identified as the research content, combined with logging geology, sequence stratigraphy, sedimentology theories and methods to make analysis. In the sequence comparison of this paper is to take real-frequency wavelet analysis, spectral curves and integral property and other methods studied. The results indicated that real-frequency analysis of wavelet, whether a one-dimensional or two-dimensional curves spectrum show, displayed a clear division of sequence units and sedimentary cycles. Curve spectrum analysis technology analyses, studies and deal with the vibration signal by a Fourier transform. For the integral properties of technology, this paper uses INPEFA technical ideas. Using my own written procedures on logging curve, handling results are obvious. Based on technical theory INPEFA can effectively identify the sequence unit sequence compared. In the lithologic identification context, this paper takes the electrical imaging logging techniques and log facies analysis method to study it. Electrical imaging logging technology can identify complex lithology of deep sandy-conglomerate areas clearly and intuitively, and provide a good basis for scaling conventional logging. Compared to the logging data, the log facies analysis method with conventional logging curve as an input parameter, improved the resolution of lithologic identification.In this paper, methods and applications of practice combined to verify the feasibility of the thesis contents, and provide technical methods and research ideas for future areas of deep sandy-conglomerate sequence comparison and lithologic identification.