薩南七東試驗區(qū)葡I1-4砂組構(gòu)造、砂體井震綜合研究
[Abstract]:For the oil fields in the middle and late stages of development, it is particularly important to improve the development effect of microstructure and adjust the relationship between injection and production. The experimental area of Sanan Qidong has entered the stage of high water cut development in the later stage, and the research work of fine structure is particularly important. By optimizing the logging curves of 3D seismic data, the synthetic records are made carefully, and the precise and accurate horizon tracking is made. according to the three basic principles of amplitude, in-phase or continuity and waveform similarity, the four small layers and nine time units of the main reservoirs in the Qidong experimental area of Sanan are accurately traced and characterized by using the interlayer trend method. Then the observation method, coherence method and layer attribute method are used to identify and depict the large and medium faults, and then the micro faults are identified and characterized by observing and browsing the 3D data volume slices, then the micro faults are identified and characterized by the method of waveform difference and 3D spatial browsing, and the fault position is verified and corrected in combination with the logging curve, and the accurate fault position and scale are finally implemented. The T 0 diagram and structure diagram of grape flower top surface were made by velocity field correction. Two small broken noses were identified on the structural map. The results of structural interpretation can recognize the fault system, which can not only optimize the development scheme, guide the deployment of supplementary adjustment wells, high efficiency wells and large displacement wells, perfect the comprehensive adjustment of injection-production system near faults, and provide a favorable basis for the compilation and implementation of extended wells outside the transition zone, which provides a guarantee for the sustainable development of high water cut and the search for movable remaining oil enrichment areas controlled by faults. Through the study of the distribution of sand bodies in the analysis of sedimentary phase types in the experimental area, the scheme is determined to extract the attributes and identify the sand bodies. The attributes are extracted by slicing method, multi-attribute fusion, phase conversion, seismic phase classification, frequency division stratigraphy and so on. Finally, the recognition degree of sand body is better, and the coincidence rate of sand body recognition in main reservoir is more than 80%. The accuracy of attribute map provides a powerful seismic guarantee for further development in the later stage.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:P618.13;TE32
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