Application Of Nuclear Magnetic Logging In Reservoir Classification And Fluid Identification Of Jurassic Toutunhe Formation In Funan Slope

The special types of complected hydrocarbon reservoirs such as complex lithology reservoir, low porosity, low permeability and low resistively reservoir become more and more important in the development and exploration of Junggar basin. In consideration of the feature of complex porosity structure, low resistively and unconspicuous water/oil relation of reservoir of Toutunhe group of Jurassic in Fudong Area. We discuss the reservoir classification and fluid identification method with NML technology to improve the fluid identification and interpretation precision.The research is focus on reservoir classification and fluid identification with NML analysis, it’s planning to start with analysis of characteristics of reservoir property and logging fluid identification. The research comes to a conclusion that the reservoir parameters obtained from MRILP is very important to the complex reservoir identification in the work area. With the help of analysis of active porosity and permeability curves in NML, we can easily identify reservoirs and achieve good application effect on analysis of reservoir porosity based on NML data. Research shows that it has good relationship between reservoir permeability, the FZI index and formation testing capacity.This also shows that the reservoir productivity and the produce effect are controlled by the porosity and permeability characteristic of reservoir, the reservoir is good or bad is related on the pore diameter and structure. Fracturing measure is not suggested on reservoir of Toutunhe group of Jurassic in Fudong Area because of the good porosity and permeability. It will be better to optimize production measure for reservoir protection and productivity improvement. It also helps to establish a logging reservoir classification standard in work area and the coincidence rate comes to71.4%.The actual final research improve the coincidence rate of logging evaluation on Toutunhe group of Jurassic in Fudong Area to68.4%with the use of differentia] spectrum method and capillary pressure curve by NMR. That’s evidence the wonderful effect of NML in actual work.