Study On Logging Evaluation Method Of The Low Resistivity Reservoir In The West Of Taibei

S Oil Field is one of the main blocks in the west of Taibei sinking in T Basin and a typical low-relief lithologic reservoir.This paper thinks that S block is a reservoir of low oil abundance,low porosity,low permeability and low resistivity by analyzing a large number of rock physic experimental data and block reservoir geological features.It has drawn a conclusion that lithology is the foundation,physical property is the condition,electricity is the core and oil potential is the purpose.Under the background of constructing,the oil-bearing reservoir in S is mainly controlled by rock physic and physical property.It is found that the structure of the lower amplitude,complex porosity,high formation water salinity and high bound water lead to the low resistivity in this reservoir.In this paper,there are several ways to study the features of this reservoir as follows.First,with core calibration logging method,the main parameters models,(shale content,porosity,permeability and water saturation),are reconstructed.Second,qualitative identification of fluid properties have been conducted by using of differential identification,invasion of array induction,connected measurements of induction and lateral log,superposition of dual porosity,chart boards and nuclear magnetic resonance log.Third,assuming that the percolation network and conductive network have similar conditions,the calculating methods of relative permeability and water production rate have been designed by referring to other previous research.By statistical analysis,this method can be used to this reservoir to some extent,and can meet the demand of production evaluation.Through studies,an evaluation method about reservoir parameter evaluation calculation and fluid recognition has been established,which improves the log interpretation accordance rate in this block.Using logging method to calculate the relative permeability and analyse the features of reservoir water production give a better solution to the problem in the oil field production.