Facies Analysis Of Neogene ?-? Reservoirs In Hanging Wall Of No. ? Fault In Gaskule Oilfield

This thesis with sedimentology,reservoir characterization,petroleum geology,sequence stratigraphy and reservoir geology theory as the instruction,Integrated application of core,cuttings and logging geology foundation data,USES the many kinds of methods of small layer division and contrast,At the same time,combining previous research results on ?-?group of N1-N21 GaSiKuLe oilfield reservoir sedimentary microfacies are analyzed;On the basis of the research of sedimentary facies,the author by Miall reservoir architecture research theory as the instruction,are discussed in detailed research of underground reservoir configuration,finally obtained the following results:According to the characteristics of the work area formation development,according to the point to the line to the trinity of stratigraphic correlation principle,give priority to with logo layer method,combined with such as elevation,sedimentary cycle and sectioning of the 440 Wells in the small layer division and contrast,the total finished article 28 work lines of small layer comparison,finally established a fine isochronous stratigraphic framework.Has been clear about the work area in the direction of provenance,regional sedimentary framework,palaeostructure,etc,on the basis of on the basis of logging facies and geological facies marks,the work area ?-? group has carried on the comprehensive analysis of sedimentary facies of reservoir group:that the reservoir ?-? group formation is a set of braided river delta sedimentary system,including development of braided river delta plain and braided river delta front subfacies,including water distributary channel,between water distributary channel,sand sheet,far sand dam,debouch bar,underwater distributary channel and seven between the underwater distributary channel microfacies.By means of single well facies analysis,even the relatively well than the analysis of characteristics of peace faces Ni-N21 think GaSiKuLe oilfield reservoir ?-? group formation sedimentary period is a process of lake retreat,IV reservoir group of period,development of braided river delta front deposition,with the crust uplift,the water is shallow,? reservoir group evolved into the braided river delta plain subfacies,the characteristics of the whole cycle of the cycle.And in the process of deposition,has experienced several times of lake retreat-into the lake-lake retreat change,also has caused the sedimentary micro-facies lateral differentiation and vertical variation.With Miall modern sedimentary and outcrop area of fluvial facies reservoir architecture research theory as the instruction,the author will work area of reservoir configuration interface is divided into five,due to the limitation of lack of core data,so the sedimentary microfacies study as configuration unit;By interlayer identification configuration unit were summarized between vertical and lateral splicing superimposed relationship,which is divided into five kinds,in the vertical superimposed relationship between the lateral splicing relationship is subdivided into seven.Within the established configuration unit,further summarizes the 27 different configuration unit of lithofacies types;On the basis of the above research results,final design and completed the work area configuration mode.