Reservoir Characteristics And Favorable Area Prediction Of The Ma 5 Sub-member _5-10 Of Block Su 5 In Central Sulige

The paper is based on sedimentary petrology,reservoir geology,etc.It takes drilling mud logging data,chip data,logging data,test data,production data from literature research and gathering as basic information to divide the strata in the study area and analyze the division and distribution of sedimentary facie in the central Su5 blocks in a Ma55-10 sub-section.The paper researches the block diagenesis types,scope and strength,combining with reservoir lithology,physical characteristics,plane distribution characteristics and the main influence factors influencing reservoir development to make a prediction in the Su5 blocks in a Ma55-10 sub-section.By applying the well profile and logging response characteristics established by the logging curve,it makes division and comparison to the Ma55-10 sub-section stratum.Then find the key research horizon are Ma56 and Ma57 small layer.At the same time,by applying the core and slice data to establish the lithology combination and the corresponding relation of logging curve to divide the Ma55-10 sub-section into supratidal zone,intertidal zone and subtidal zone phase and several microfacies.On the basis of the sedimentary microfacies study,it analyzes the main diagenesis of Su5 block Ma55-10 sub-section is tidal flat evaporation dolomization.From east to the west in Sue five blocks,dolomization is obviously strengthened and the scope has been expanded.It further studied the reservoir characteristics of the central Su5 blocks Ma55-10 of Mjiagou formation,and concluded that the study area reservoir lithology focused on gypsum concretion dissolved pore dolomite with coarse grain dolostone(intergranular hole).Physical properties in the study area has the characteristics of low porosity and low permeability.Combined with effective reservoir isopachous map,it is concluded that the study area horse five six and five seven small layer relatively develops better than the other small effective reservoir.Through the study of the main influencial factors(sedimentary microfacies,diagenesis,small amplitude of tectonic geomorphology,research)in the central Sue 5 blocks in horse Ma55-10 sub-section,and based on the basis of effective reservoir development,Su5 blocks has predicted class I favorable area of 2.9 km2,class ?s favorable area of 16.7 km2,class ?favorable area of 106.2 km2,a total of 128.8 km2,and it divides two favorable zones:SuA 5-2-47 well area and Zhao 100 near area.