Study On Reservoir Characteristics And Development Strategy Of Well Block Liu 474

The 474 well area is located in Wanli Township,Suning County,Hebei Province,and its construction position is located in the middle of the Raoyang depression,leaving 70 blocks in the south.The tectonic appearance of the remaining 474 well area is represented by the back slope structure of the northwest slope and the southeast lift,and the three sections of the ancient near-line Dongying Group and the Shahe Street group are segments for the purpose of the study,which have great potential for development.However,the geological structure of the 474 well area is more complex,and the understanding of the distribution characteristics of the reservoir unit,the principle and control elements affecting the formation of the reservoir unit is not clear,which seriously restricts the further development of the oil field.Therefore,the characteristics of reservoir in the remaining 474 well area and the development characteristics of the deep excavation in the 474 well area in the future,to guide the future exploration and development of rock-like tectonic oil and gas reservoirs in the remaining 474 well area or similar well area has important theoretical significance.This paper took the remaining 474 well area as the research object,in view of the geological features and development characteristics of the reservoir in the 474 well area,the reservoir unit analysis method was used,mainly from the reservoir and the structure of the reservoir unit formation control factors,and combined with the dynamic characteristics of production in the research area to find out the problems and development potential in the development,and put forward reasonable adjustment countermeasures.In order to accurately describe the characteristics and formation mechanism of the complex oil and gas reservoir,the concept of reservoir unit was proposed,and the research method of reservoir unit was clarified,on the basis of studying the distribution characteristics of reservoir unit,the influence of fault and tectonic form on the formation of reservoir unit was analyzed,and the structure of the small layer top surface undulating structure and reservoir unit plan were drawn,and the control effect of the tectonic background on reservoir unit was further studied;Clarified the control function of sedimentary relative reservoir unit formation,and laid the foundation for the analysis of the development potential of the favorable area and the formulation of reasonable adjustment countermeasures in the later period.On the basis of studying the control factors affecting the formation of reservoir units,the types of reservoir units were clarified,the six types of reservoir units in the 474 well areas retained in the Dawangzhuang oilfield were summarized,and the reservoir units of typical well drilling encounters were analyzed according to the type of reservoir units,the characteristics of reservoir units were clarified,and the basis for the prediction of favorable areas was provided.This paper studied the dynamic development characteristics of the target block,analyzed the flood characteristics of the reservoir,clarifies the factors of flooding in the reservoir unit,analyzed the development potential according to the research results,and put forward three adjustment opinions.