The Research On The Key Technology Of The Hydrocarbon Migration Under Tectophysics Experimenting System

The tectonics and hydrocarbon migration simulating experiment, which is an important research method, plays an important role in researching the geographic structure progress and forming mechanism and relationship between hydrocarbon migrations. While how to consider various factors in inversion the control role of fault structures for the hydrocarbon accumulation using experiment method has important theoretical and practical significance for long-term oil and gas exploration, in particular, to find fault block oil and gas reservoirs. On the basis of current experimental apparatus at home and abroad advantages, this thesis does research on the key technology of hydrocarbon migration simulation system under tectonic deformation in view of simulation system's problems. And this paper developed integrated the hydrocarbon migration under tectonics deformation test platform, which takes into account the tectonics deformation and hydrocarbon migration experiment for the first time.The thesis established simulated scheme and analogy mathematical model of hydrocarbon migration and accumulation under tectonics deformation on analysis and research of hydrocarbon migration and accumulation under tectonics deformation experiments according to similarity theorem. In order to assure the main similar criteria in different simulating experiments, the paper numerically analyses master/slave similar criteria by defining evaluating objective function of physical simulation experiments, which use the similar parameters as the variable of the objective function in experimental system. And then we calculated experiment key parameters according to principal similar conditions, which build the foundation of experimental apparatus key components selection and design.According to geomechanics theory and the study theme tectonics simulation experimental target, the thesis analysis genetic model and mechanical mechanisms of typical faults, proposed technical requirements of the stress load cell and identified the structural concept design of deformation module stress load cell from the perspective of the formation of fault system. Then we formed the global concept design of apparatus and identified mechanical structure key components selection and parameters, developed serial experimental apparatus integrating of hydrocarbons migration and accumulation under tectonic deformation including infuse system, control system, model system, the tectonics deformation systems and accessory system and other key modules using complex system theory and the modular design. At last, this paper conducted appropriate vivificated experiments research and testing work, and finally completed the experimental apparatus development work integrated of hydrocarbons migration and accumulation under tectonic deformation.In order to precede tectonics deformation experiment, we should have the appropriate materials firstly. So the thesis collects and collates rock information of Dongying sag Shasan section, conducts a number of mechanical parameters of rock test and analysis deformation characteristics of the test, and makes clear the rock structure and deformation characters; The paper established the composition of strata and rock deformation similarity calculate model and derived similarity criteria to the mechanical parameters; And this paper constructed mudstone and sandstone analog materials sequence of Shasan section, which can be changed its physical properties by changing the content of main materials and auxiliary materials, water content and compaction, and build geological model in line with the experimental conditions;In order to obtain hydrocarbon migration pathways information in the three-dimensional geological model, the thesis alternated the basic two-dimensional electric field equation to the Fourier transform domain, according to two-dimensional mathematical model of the electric field. The thesis designed hydrocarbon detection scheme based on high-density resistivity chromatography, established simple laboratory model experiments, and conducted a number of experiments. In this paper, we formed the detection method, mathematical model of hydrocarbon migration processes under tectonic deformation within the fault zone, established a physical simulation, mathematical model of data processing, and formatted experimental equipment control, measurement, process integration software with independent intellectual property property. The paper can achieve non-contact real-time hydrocarbon migration paths detection within the model, and can generate detection cloud map of the oil-water interface. On the basis of least squares, the paper retrieved the data obtained by forward calculating and displayed the difference of various materials resistivity in the form of visual images which provided an important technical basis and experimental reference data for evaluation of the test results.The hydrocarbon migration simulation under tectonics deformation experimental apparatus developed by this paper has been installed in Institute of Geological Sciences in the Shengli Oilfield, in September 2010. The tectonics deformation system can achieve different combinations of simulated fault style test, combination of modules is adjustable and flexible, the power and load units are stable and operation has high precision, hydrocarbon migration physical simulation system can conduct hydrocarbon migration and accumulation simulation test under control of faults. The tested results show that the deformation developed under the hydrocarbon migration simulation equipment meets the design requirements and the needs of geologic simulation.