Seismic Reservoir Prediction And Hydrocarbon Enrichment Law In The Paleogene Of Lixian Slope

With the development of exploration technology and deepening of conventional reservoir exploration,oil and gas exploration targets have shifted from conventional reservoirs to complex reservoirs.Compared with conventional reservoir,the complex reservoir often has the characteristics of thin reservoirs and complex oil-water relationships.Therefore,according to the characteristics of this type of reservoir,we need to propose effective reservoir prediction methods and study the law of hydrocarbon accumulation.The Lixian slope has been proven to receive 100 million tons of oil and gas reserves,however,due to the scale of sand bodies varies greatly,and the accumulation model is relatively complex,exploration in this filed has not achieved a major breakthrough in recent years.This paper starts with the geological data,seismic data and logging data to comprehensively analyze the structure,sedimentary and reservoir characteristics of this area.We have used rock physics statistics to analyze the difference reservoirs and non-reservoirs.Besides,we used nonlinear inversion of seismic phased control based on simulated annealing to predict the reservoirs.On the basis of previous researches,we analyzed the typical reservoirs according to the drilling results and conditions for reservoir formation.Finally,we established a complete reservoir prediction and evaluation system,and achieved the evaluation of exploration targets in the study area.