Productivity Evaluation Of Well Logging In Deep Glutenite Reservoir

Prediction of the fracturing in the low-poroperm reservoirs have been restricted by the characteristic of the deep glutinite where the complicated lithology are very low permeable and aeolotropic in compressional and shear direction. Based on the basically conception of Darcy law, the research was carried on according to the model of Raymond and Binder combined with the theory of radial steady-state fluid flow.On the basis of curve calibration in the region of deep glutinite,Firstly, analyzing the method of calculating the geometric parameters of the reservoir after fracturing and using the conventional material to acquire some productivity parameter,such as effective porosity, effective permeability, viscosity, volume ratio,according to the nuclear magnetic logging in region of interest.focusing on improving the method of calculating the reservoir parameter and the prediction of productivity after fracturing.then raise a series of methods which are suit to the practical geoloy and apply those methods to 20 conventional wells amd 5 NMR wells and attend good effects.Secondly,based on the conception of the NMR,analyzing the methods of calculating capillary pressure curve with nuclear magnetic technology. Meanwhile,use this pressure curve to obtain all the pore throat structure parameter such as drainage pressure,mid-value pressure and the max-pore throat radius. We raised the composited index parameter which can reflet the productivity grade separation in our reservoir by acquiring those pore throat parameter and the application of those methods have made a ideal effect through the well processing. At last, on the basis, software which can be used with Forward was be developed.