Evaluation method for fractured reservoir in buried hill

The main target zone of the M structure in the BZ structure is metamorphic granite buried hill fracture reservoir, which is characterized by strong horizontal and vertical reservoir heterogeneity and complex reservoir space types that brings many problems to the geological decision-making of drilling.Therefore, the evaluation method of the fractured reservoir in buried hill is carried out.Based on the drilling engineering parameters, the work exponential model is established to realize the real-time identification of the reservoir while drilling.Based on the conventional logging data, from the aspect of formation rock mechanics, the logging evaluation model is established to evaluate the fracture development degree of the reservoir.To make up for the shortage of single evaluation system, the fuzzy mathematics theory is introduced to combine the logging reservoir evaluation parameters and well logging reservoir evaluation parameters, and the comprehensive evaluation model established.The application results of several wells show that the method can meet the requirements of mine exploration, and can provide basis for reservoir classification, DST layer optimization, drilling parameters optimization.