电磁-地震联合研究深层火山岩储层-以辽东凹陷火山岩勘探为例

Seismic reflections from deep volcanic strata are disorderly, which makes volcanic reservoir detection very difficult. To overcome this difficulty, a specific technical strategy is proposed in this paper. The simulated annealing constrained inversion of jointed electromagnetic and seismic data improves the resolution together with drilling data calibration and shallow model building. With lithological analysis, the electrical variation regularity of volcanic rock in the research area is revealed, and an electrical variation rhythm coding is put forward to interpret reservoirs. In the end, the multi-stage and facies distribution of volcanic rocks in the third member of Shahejie Formation are identified, and the distribution characteristics of trachyte are described, which may provide a feasible reference for the exploration of similar complex targets.