| This paper study mainly on the drilling core,logging,seismic data of time domain measurement fault-horizon interpretation,the amplitude-frequency calibration analysis of comprehensive properties,and so on,from drilling well data points,the main data points,the synsedimentary fault line to ZTR index,sand ratio,time domain fault of gap change rate data as the foundation,combining with seismic data of time domain fault-horizon interpretation data,the amplitude-frequency synthesis attribute data,previous paleogeomorphology restoration research data,etc.,to establish the target horizon fan delta sedimentary system with synsedimentary fault combination relations in various aspects of evolution model.Starting from the whole research area of nanpu sag and its adjacent uplift area,the study on the relationship between the distribution and evolution of sedimentary system and sedimentary facies and the activity distribution and evolution of main synsedimentary faults is carried out.On this basis,a quantitative model model can be provided for other areas to carry out similar studies.The distribution patterns of fan deltas and their subfacies under the control of single or multiple synsedimentary faults are summarized.The general rules are as follows: the distribution area of fan delta plain subfacies is negatively correlated with the synsedimentary fault activity at the source entrance and positively correlated with the ratio of fan delta to the total deposition area.The proportion of the front sub-facies spreading area is negatively correlated with the synsedimentary fault activity at the source entrance,and is positively correlated with the total area of the sedimentary fan when the synsedimentary fault activity is extremely low,i.e.approaching zero,and slightly larger,but still low.When the fan body is distributed in the direction of reverse synsedimentary fault,the front subfacies extends to the direction of the larger active section with larger area and proportion. |
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