The group takes Marine Geophysical Exploration and Information Technology, Coastal Engineering Geophysics and Computational Geophysics as the main research content. During the "Tenth Five -Year" period, the group took over the commitment of the "118" special, four National Natural Science Foundation projects, one Provincial Natural Science Foundation project, one international cooperation project, four 863 projects, one CAS Knowledge Innovation projects, one key project to build laboratories and more than 10 enterprices collaborative research projects. The group has trained 37 graduated / Ph.D. students, 89 postgraduates / masters. The group published more than 210 papers of which number of SCI / EI / ISTP are closing to 23. The translated "Seismic Data Analysis - Seismic data processing, inversion and interpretation" as a significant book on the international impact has published.
The main contents are:
1. Marine geophysical exploration and Information Technology
The objectives are to resolve the major technical challenges of Marine Geophysical Exploration and Information Technology, research and development of new methods and seismic data processing, new technology features, transferring the scientific and technological achievements into technology development of productive forces. The research is mainly to identify and predict submarine gas hydrates, to develop coupled detectors under complex surface conditions from shallow sea to beach, geophysical methods for complex oil and gas fields, to devote to the research and development of model-based seismic information processing software system. The research direction took one 863 major projects as the basis, developed and registered one software with independent intellectual property rights, i.e. the seismic data processing system contains a set of 120 functional modules (MBP 1.0). The software and project accepted by the 863 Experts consistently gave a high evaluation that the system is characterized by the pre-stack migration velocity analysis, velocity modeling, pre-stack migration imaging, simulation testing and immediate treatment, effect deepwater long period reverberation of repression, and many other obvious characteristics. When the software of seismic data processing mainly depends on the abroad situation, the successful development of this system has important practical significance to China. Meanwhile, the research direction mountain seismic exploration, complex geological areas such as access to technical noise removed a series of research results. In recent years, high-precision committed to developing the beach to shallow sea seismic exploration technology, through collaboration with relevant company of Shengli Oilfield. The group made significant progress on "geophone coupling study" of the complex surface conditions in shallow sea to beach areas and some results have been registered six authorized patents.
2. Coastal Engineering Geophysics
This research objectives are to solve the problem, theory and methods of geophysical exploration technology related to coastal engineering, the direction systematically focuses on data collection methods, data processing, imaging and geological interpretation of the geophysical. Shallow-sea geological radar, engineering seismic exploration and the corresponding level of data processing have his own research specialties. The research direction took the National Natural Science Foundation and a number of collaborative projects. They have made encouraging progress on geological radar data analysis of Maxwell's equations pre-stack migration, stable migration velocity method, time-domain nonlinear inversion of geological radar data method, radar exploration of fissures and time-sequential tracer change between wells and monitoring. multiple stack of reflection seismic waves and forward-stacked migration methods in shallow strata exploration were adopted to investigate shallow-sea and coastal fault zones, active faults investigation of sea-across bridge and fault investigation and safety assessment of the Olympic Sailing Center of Qingdao. The results got a good evaluation.
3. Calculational Geophysics
The calculational geophysics group focuses on research and graduate training since formation. This group integrates many methods of gravity, magnetism, logging, seismic prospecting, geodesy, geological numerical modeling, focusing on a variety of forward and inversion methods based on geophysical data and application. Its own characteristics have been in co-inversion between cross-hole seismic and well electromagnetic and seismic wave equation using forward modeling. Cross-well electromagnetic imaging is used to image the conductivity distribution, being compared with the electric logging, magnetotelluric and ground-electromagnetic method, having a deeper, larger, higher and accuracy exploration range. The group involves some international experts. The research direction took the National Natural Science Foundation projects, the provincial foundation and collaborative projects supported by oilfield companies. The research results result in a good solution in oil production due to logging in the case of the electromagnetic wave effect. It is difficult to measure the problem of formation resistivity and downhole- related thickness, which has important theoretical significance and practical value for the development of higher logging tool and the corresponding quantitative interpretation of formation resistivity, to fill the domestic blank in this field.
