The Seismic Wave Numerical Simulation Under Seismic Sequence Stratigraphic Framework

Use the dissemination rule about the propagation time, path, energy and other information of seismic wave in the known underground geological modeling, we can make seismic forward modeling to understand the unknown problem. The artificial geological forward modeling can enhance people to understand the rule of unknown model and to solve the real seismic geology problems. The forward modeling of seismic waves in the theory of seismology is relatively active branch. The simulation with sequence stratigraphy (also known as quantitative sequence stratigraphy.) is an important part of the theory of sequence stratigraphy, a conventional research tool and technical method, it is also the quantitative description of basin subsidence, changes in lake level, sediment supply, sediment compaction, sedimentation erosion process and the deposition morphology parameters.The seismic response characteristics analog research methods about reef reservoir which is under the frame of seismic sequence stratigraphy, which combined with the theory method of forward-migration and simulation sequence stratigraphy, it will be useful to guide the design of the field acquisition parameters, evaluate the seismic processing effect, test the conclusions of seismic interpretation or even be used for hydrocarbon detection. The scope and shape of the seismic facies distribution, the stratigraphic superposition model of phase with the seismic history of geological evolution and marine seismic stratigraphy in the evolution of the product, such as aggradational and retrogradational cycles series, as well as a variety of reef phase, the physical characteristics of the sedimentary facies can be good for a more detailed simulation. Seismic wave numerical simulation will be able to provide theoretical data for the inversion method (eg, AVO inversion, the full waveform inversion, etc.), and be able to test the feasibility and effectiveness of the inversion method. Meanwhile, the simulation of sequence stratigraphic framework can provide better fit for the geological formation characteristics and the seismic reflection characteristics.In this paper, using seismic software for seismic profiles and layered velocity information, can obtain the goal of the original graphics of the seismic facies volume and analyse of refinement each phase axis on the map; will be able to divide the rich meaning of the seismic stratigraphy structural seismic facies. For example, the reef, the edge of the shoal, overlap, offlap and accretion into the product series to predict the model comparing with the actual seismic geology, well logging and petrophysical parameters, as well as a variety of lithologic information, we can obtain the spatial distribution of each frame and the corresponding speed filling value by the information of Inversion speed. Then the outlining establish tectonic seismic information by the edge of the mapping software. the establishment of the vice-map create a path and fill it with a brush and then extract own speculative model diagram and grab the figure; and fill with the speed of the software model diagram fill rate value to determine the velocity data (the process need to pay attention to the diagram of the production in order to comply with the requirements of the software pixel), and then call the speed of data, the data-processing and the plastic-square data format map, mark the color and velocity which reflects the total effect diagram, and doing those is easy to forward the results of the speed profile compared; forward modeling and migration, and finally get the forward offset profile, and then combine with the seismic, geological, logging, and retrieval data on the results of seismic stratigraphic sequence interpretation. So as to achieve to the forword purpose of guiding field acquisition parameters in order to better guide the design, the evaluation, the seismic processing results, and test seismic interpretation and conclusions.