Methodology is given estimates of rock-collectors according to the well-logging through inversion of acoustic data in the structure of pore space and its practical implementation on the example of carbonate horizons of well number 35 Lypovo -Dolinska area.
According to the results of litho-petrographic investigations the rock reservoirs discovered by Lyzhiay-1 (2129 m), Vezhaiciay-11 (2046,8 m ) boreholes were formed under the coastal-marine conditions, and discovered by the Lyzhiay-1 (2127,6 m) borehole they were formed under the sea shelf conditions. Matrix of the rocks is characterized by high reservoir properties: permeability (taking into consideration the Klinkenberg effect) changes from 0,1×10-15 м2 to 80,1×10-15 м2 and open porosity changes from 4,1 to 13,3 %.
The purpose. The aim of the research is the prediction of the reservoir properties (porosity, effective thicknesses) for communication flow rate of gas production and further forecasting tributaries in new gas promising areas in the North-Western part of Bilche-Velickou zone of Precarpathian foredeep. The methodology of the research was to build a schematic maps of change in area of porosity and effective thicknesses. Results.
Based on the results of our studies, three litho-types of rocks have been identified, their structure characterized, influence of post-sedimentary transformations revealed, etc. Leaching, sulphatization and deposition of ore minerals are considered as the changes superimposed upon the background lithogenesis. The diversity of the processes has resulted in significant petrophysical heterogeheity of geological cross-section, which has to be taken into account during idevelopment of the layers, introduction of the intensive methods, etc.