Study And Design On Detection System Of Oil And Gas Migration On Structure Distortion And Hydrocarbon Migration Efficiency

The tectonics and hydrocarbon migration simulating experiment, which is an important research method, plays an important role in researching the geographic structure deformation phenomenon and forming mechanism and investigating the factors of hydrocarbon migration and accumulation. While how to consider various factors in inversion the control role of fault structures for the hydrocarbon accumulation using experimental method has important theoretical and practical value for long-term oil and gas exploration, in particular, to find fault block oil and gas reservoirs .In view of practical problems of hydrocarbon migration detection in integrated hydrocarbon migration experiment under tectonic deformation, the thesis deeply studied on the internal detection of hydrocarbon migration based on high density resistivity chromatographic method.In order to obtain the information of hydrocarbon migration and accumulation pathways inside the geological model, the thesis planed the overall framework of the experimental device based on similarity theory, and finished the design of the tectonic deformation system, oil and gas charging system and the hydrocarbon migration system. The paper designed the detection scheme based on high density resistivity chromatographic method by comparing various detection methods. In order to test the rationality and applicability of the designed detection system, the paper carried out series simulating experiments on tectonic deformation, oil and gas charging and data acquisition based on high density resistivity chromatographic method using the modular design thought. Ultimately, the paper formed integrated detection technology of hydrocarbon migration on structure distortion and hydrocarbon migration efficiency.For the purpose of truly inversing hydrocarbon migration distribution inside the geological model, the thesis established the data processing method based on high density resistivity chromatographic method. In the paper, compared of various numerical interpolation and filtering algorithm, we built the data preprocessing technology based on associated filtering method. In terms of forward modeling, the paper discussed the efficiency and accuracy between finite element forward modeling and finite difference forward modeling, and finally the finite element forward was defined. With the calculation process, the paper planed the flow chart of finite element forward modeling method. On the basis of forward modeling, the paper conducted the data inversion based on least squares inversion method, and formed the inversion process. Furthermore, the paper showed the difference between the resistivity of the media in the form of visual images. Experiments and the data inversion results showed that the high density resistivity chromatographic method can be used to detect the high hydrocarbon inside the geological model. So far, the thesis preliminary established the hydrocarbon migration internal detection method, experimental techniques and the data model inside the fault under tectonic deformation, and formed the detection technology integrated with system controlling, measurement and processing.