Study On Control Factors And Production Capacity Rules Low Resistivity Reservoir In Bozhong A Oilfield

Currently,Bozhong A oilfield is in high-water and high-production stage.The low resistivity reservoir can effectively connect the reserves and production of old oilfields.The low resistivity reservoir is characterized by strong concealment and huge development potential.More studies on its control factors and production capacity rules contribute to the exploration of low resistivity reservoirs in the relevant layers of the Bohai Sea,and the purpose of improving overall production.In this paper,based on the basic logging and seismic data of the NgII2 lowresistivity oil layer in the middle of the Guantao Formation in the Bozhong A Oilfield,the geological structure characteristics,sedimentary environment and other geological conditions of the study area are studied;during the formation of the Guantao Formation,the intensity of tectonic activity Weak,the sea area has entered the stage of post-fracture depression evolution,the differential lifting movement of the fault block in Shijiutuo uplift has basically stopped,the structure of Guantao Formation is relatively gentle,the closing range is low,and a large number of faults have been developed.The macro-controlling factors of reservoir geology are mainly influenced by structure,reservoir,sedimentary facies,diagenesis and so on.Through a comprehensive analysis of the core of the NgII2 reservoir test well,using X-ray diffraction experiments,mercury intrusion method,and PVT experimental analysis,the lithology,particle size,porosity,permeability,clay mineral content,formation water salinity and formation The characteristics such as immobilized water saturation are compared with conventional reservoirs,and the physical micro-controlling factors of low-resistance reservoirs in the study area are mainly due to the finer grain size of the reservoir,the higher mud content,and the clay mineral Yi/Meng mixed layer content.There are four aspects: high and high immobile water saturation.This research tracks the production status of 9 production wells in the NgII2 oil layer in the study area,records production dynamic data(including wellhead oil pressure,casing pressure,bottomhole flow pressure,current,voltage,temperature and other parameters),measures production well production on site,samples centrifugal analysis of water content,and draws the production performance curve of each oil well.Futher,based on the change rules of various parameters,this paper results in the production capacity change rules of Low Resistivity Reservoir in the Bozhong A oil field,and put forward reasonable production stimulation measures.