Methods independent of lithology and condition of well bore for locating a suspension agent identified in the underground formation fractures induced

摘要

Abstract: (EN) subterranean formation locations / heights of tagged proppant doped with a high thermal neutron capture cross section material are determined using data obtained from before and after frac logging passes through the well of the logging tool having near and far neutron dectors.Proppant location inaccuracies arising from changes in lithology between the zone of the interest and the proppant containing formation zone are made, after any required normalization is between - log change in borehole fluid.Using an observed difference between the near / far detector count rate ratios in the two passes to determine the count rate differential correction to be applied to the before frac detector count rate.The corrected before frac count rate log is then overlaid with the after frac count rate log such that suppression in the after frac count rate and relative to the corrected before frac count rate log indicates the presence of proppant translation of the summary summary invention patent: "methods ind. Ependentes lithology and condition of well bore for locating a suspension agent identificadIn the underground formation fractures induced ".This is locations / times of underground formation of a suspension agent identified in cross section doped with a material with high thermal neutron capture is determined with the use of the data obtained tickets for forming pre fractionation and post fractionation at Ravu00e9s a shaft of a tool for profiling has detectors for neutron of closeness and distance.The inaccuracies of location of the suspending agent which arise from changes in lithology between an area of no interest, and a suspending agent which contains the formation is made after any normalization required for a change of registration in the fluid hole of the Po. S call.With the use of a difference between the reasons of count rate detector proximity / distance in two passes to determine a correction differential count rate to be applied to the detector count rate of pre fractionation.The registration of count rate pre fractionation corrected is then superimposed over the record of count rate pre fractionation in such a way that the deletion in the count rate post fractionation og on the registration of count rate pre fractionation corrected indicates the presence of a People of the suspension.