| Using R5000 interpretation system to establish sea basin seismic data management and analysis platform, complete the system layer, fault belt in central earthquake tectonic characteristics analysis, the sea-tower basin can be divided into two structural layers and three tectonic activity. Two structural layer for copper bowl temple, south tuen group for the first structural layer, characterized by high stretch tectonic activities; The second structural layer to turn large grinding group, the min river, mainly for the transtensional tectonic activity; Late yi min group after deposition of sedimentary strata structural layer is not obvious, but the issue of pressure shear tectonic activities, called phase inversion.Analysis of the evolution of the basin show that early strong stretching tower south sag, form a concave three times, end-to-end, in tandem, tension twisting activity is weak, advanced extrusion twitched faint. Southern bell due to low uplift in central activity for a long time, sag stage in stretch and twist tectonic activity is very strong, in the phase inversion of southern bell is very obvious, concave fault terrace zone in the east of eastern time series of north east direction of the thrust. Steve souders sag in the continuous activity, bulging, the influence of tectonic activity is very strong. With urxun sag is obviously different from the other three sag, rift period on a smaller scale, the main hotlist now turn mill river and the sensitive period.Hai-ta basin is a multiphase complex fault basin superimposed, in the common style of single fault loop fault, double break base rift, domino double loop shape, the transformation type double loop shape fault. In the central fault belt, identify three level 14 transition zone, the transformation zone in different extent, control the concave, subsags in favor of the spatial distribution of depositional systems, and controls the subsags internal and surrounding structure-lithology composite reservoir development. |
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