The Feasibility Research of Development Seismic Inversion in Daqing Placantieline and the Application in Development Geology

The feasibility of development seismic inversion and detailed reservoir description are difficult ,in order to solve the problems curve reconstruction was proposed based on frequency division compensating. According to different-frequency logging curves reflecting different geological and sedimentary features, using the theory of high frequency recovery and low frequency compensation rebuild quasi-wave impedance logging curves. Inversion analysis test shows that through key technologies such as re-sampling data, introducing simulated annealing algorithm and highly controlling extent of participating well-pattern. Meanwhile, forward modeling and inversion practice prove that 2 meters sandstone could be recognized by development seismic. But it was unstable about the thin sandstone under 2 meters, unless the sandstone coated by mud surrounding rocks above 2 meters. Well-to-seismic integration correct the change of sedimentary for the vary of channel structural body, continuity, scale, combination and multi-period channel. Multi-period channel was divided through utilizing morphological variation and height deviation of logging curves, researching channel vertical evolution assisted retrieval sections , determining single-period river boundary finally.