A Research Of Identification Of Fluid Properties Of Low Permeability Tight Sand Conglomerate Reservoir In S Block

With the demand of oil and gas resources sustainable growth,conventional oil and gas reservoir exploration and development has reached a plateau?The unconventional reservoir,especially the unconventional reservoir density glutenite reservoir,has gradually focused the world's attention.Dense glutenite reservoir laminar liquid identification often face serval complex problems,such as complex reservoir lithology and physical properties,strong heterogeneity,complex pore structure and reservoir control factors.This research based on density glutenite reservoir laminar liquid identification method,not only has important theoretical significance,also can for dense glutenite reservoir exploration and development methods.In certain oilfield in this paper,the low porosity and low permeability glutenite reservoirs as the main research object to provide the core of the study area,petrophysical analysis data,test data,logging data and geological logging information as a basis.Mainly aimed at the paper of more than 30 Wells in the area of reservoir,formed a relatively system of dense glutenite reservoir laminar liquid identification of logging data interpretation method,established the S block reservoir fluid identification evaluation standard.This article from the following aspects for specific research.The physical properties of reservoir: To study the relations of "four character ",Found in the study area as a whole the lithology is complex,such as the conventional glutenite reservoir content is higher,relationship of porosity and permeability is intricacy,and control effect is stronger than the lithology,therefore,the reservoir parameter interpretation model should be considered a stratification studies,and further to establish reservoir "four character " relationship chart.A typical reservoir logging response characteristics and influencing factors: Stand the espect of the logging response,the reservoir fluid identification method based on different petrophysical characteristics of fluid on the logging response of contribution.The most obvious influence factors in the study area is lithology,especially the gravel content is higher value of resistivity curve is abnormally high.Establish a subtle reservoir parameter interpretation model: Using natural gamma,acoustic,density and median size parameters such as porosity,permeability and saturation model is set up.Of conventional archie formula saturation model was improved,using the theory of rock electrical parameter and the equivalent rock composition EREM model and improve the calculation precision of the saturation.Liquid of reservoir identification method research: respectively using testing data and logging data,three poor porosity and poor ratio method,ratio method,neutron-density correlation coefficient,the equivalent elastic model method and resistivity and porosity intersection chart discriminant S district goals set layer of air,water,and the recognition standard of various methods are given.Initially objective interval fluid property identification,suggest combination with test data,a variety of methods for integrated fluid properties in practical application to achieve the most accurate and reliable recognition effect.