Evaluation And Analysis On The Characteristics Of The Mesozoic Reservoirs And Logging In Jiyang Depression

Over the years,Jiyang has been the exploration of Mesozoic in the eastern found less,proven geological reserves of less than 20000000 tons,even less than the Archaeozoic proved reserves.Compared with the Cenozoic layers,basic research work is weak.Of course,many years of drilling and research has made some understanding,however,these perceptions have been gradually with the current exploration demand does not adapt,at present,the identification of oil and gas reservoir evaluation method is lack of systematic research,especially the identification and fracture parameters of different types of Mesozoic lithofacies interpretation no experience and method effective reference.Although never carried out the system of logging research work of this kind of reservoir,but the research space and its similar Archaean metamorphic rock,carbonate rock and other special lithologic reservoir in the reservoir accumulated experience,can provide good technical support for the research of Mesozoic oil and gas reservoirs.Taking Jiyang depression Mesozoic igneous rock reservoir as the research object,taking the reservoir geological characteristics as the basis,the use of drilling,logging,coring,laboratory analysis and microscopic characteristics,thin section scale oriented,extraction of sensitive parameters were two two rendezvous using chart method,looking for differences in response between different lithology various,and the use of imaging logging and achieve the purpose of identification.The change trend of all kinds of typical curve recognition is realized based on the weathering crust of Mesozoic strata,and given the crack identification method based on the conventional logging,on the basis of this,put forward the permeability of the instructions on the SP and GR curves and based on gas logging data can be used as a good indicator of Mesozoic strata division of reservoir,constructed the Mesozoic reservoir classification method.The parameters of reservoir construction sub facies(porosity,permeability,saturation)calculation method.