Research On Rock Electrical Parameters And Application Of Pyroclastic Rock Reservoirs In Tamuchage Basin

With the Exploration scale expansion of oil and gas exploration and the exploration depth increases, the volcanic and volcaniclastic rocks of the reservoir has become a important part of the oil industry, Since the 20th century, Since the twenties 20's of 20th century, Cuba, Argentina, the United States, Indonesia, the former Soviet Union, Ghana, have been discovered volcanic reservoir. Our country has already found a number of volcanic reservoir in the Songliao Basin, Liaohe Basin and other areas . In recent years, in the Junggar, Santanghu, Hai Ta, Eren, Bohai Bay basins and volcanic gas fields continue to show our country's oil and gas exploration and development of volcanic great potential. As the volcanic clastic reservoir more and more to be found , people are more and more attention to the evaluation of volcanic clastic reservoir, Hailar - Tamuchage Basin with large-scale volcanic clastic reservoir, but the main problem currently faced by relatively low accuracy of exploration, reservoir identification difficult, restricting the oil rate of development, therefore, tuffaceous Under the pressure of the reservoir sandstone rock power relationship between the temperature measurement of tuffaceous sandstone lithology identification, establishment of a tuffaceous sandstone of the log evaluation method is very important to the original intentIn the process of research, First carried on the basic data collection, the reorganization and the analysis, then reservoir the Geological characteristics of the tuffaceous sandstone lithology, physical properties and logging response characteristics , To further improve the accuracy of reservoir evaluation, reservoir rock under the conditions of the laboratory measurement of electrical parameters is especially necessary. In this foundation, We measurement the area 62 piece of rock specimen under reservoir condition. Re-measurement process, the chosen approach is semi-permeable partition method, Compares conventional the core sample electric properties experiment, this experiment inspects the rock take the oil deposit characteristic as the starting point the electric properties, had considered fully in the measuring process the reservoir rock locates oil deposit conditions and so on formation temperature, formation pressure, formation water salinity, wettability and capillary pressure balanced. Because in the beforehand literature has not aimed at the volcano detritus precipitous electrical parameter specially the research, therefore this article the pyroclastic rocks, the sandstone and the conglomerate measurement result has carried on the analysis summary, and separately factors and the crag electrical parameter and so on temperature, pressure, hardness index, frequency dispersion, lithological character, porosity, penetration coefficient carries on the analysis, has studied the crag electrical parameter change rule. The next this article take originally the being broad-minded scholar's capillary tube theory as well as Herrick electricity winding as a foundation, analyzed and discussed the crag electrical parameter controlling factor, this was also this measurement result crag electrolysis rationale。Furthermore, this article according to the collection the log information to make the cross plot, and carries on processing take the lothological discrimination effect obvious cross plot as the template to the entire mouth well, then determination different depth lithological character,Regarding the computation porosity part, first conducts the research to the argillaceous sandstone stratum, calculates the shale content first, and compares with core analysis's shale content, discovers suits the research area shale content the seeking method, then the elimination argillaceous sandstone's influence, according to the density response equation computation effective porosity, then the computation tuffaceous content, the tuffaceous sandstone revealed that is the sandstone skeleton, argillaceous, the tuffaceous and the porosity composition, according to the neutron, the density, the acousitc log response establishment volume model, determined that various part of skeleton parameter, the programming seeks various part of volumes.To strike the last part of the saturation is still to resistivity saturation evaluation basis, the tuffaceous sandstone, and mudstone that as with additional conductivity, parallel conductance according to the principle of combining Tuoxinuobu. Deduced Ito tuffaceous sandstone saturation formula, and make a real deal, according to the saturation model to determine the water saturation calculated with the interpretation of the report and conclusions of testing oil comparison, agreement was highWith the electrical parameters of rock which measuremented Under Reservoir conditions As foundation, unifies the Archie's formula, the use core sample material and many kinds of methods to the reservoir parameter computation, and wooden observed the standard partial wells to the tower to carry on actual processing, has made the good application progress.