METHODS FOR DETERMINING LOCATION marked PROPLANTA into the cracks formed at fracturing

摘要

1. A method of borehole logging tool through the subterranean formation, which can be subjected to hydraulic fracturing comprising: implementing before and after fracturing logging operations, in which the logging tool comprising a neutron source and thermal neutron detectors several or capture gamma radiation are located at different distances from the neutron source, is moved through the borehole to obtain the intensities of the samples near and far detectors before and after hydraulic fracturing and intensity ratios of samples near and far detectors (relationship N / F) before and after hydraulic fracturing; adjustment of the intensities of samples and the relationship N / F, obtained before fracturing to account for changes in the wellbore fluid and / or logging tools and / or output characteristics of the neutron source between logging operations before and after fracturing; comparison relations N / F before and after fracturing, after the adjustment step to obtain difference relations N / F , use of the obtained differences relationship N / F for the calculation of the differences of intensities of samples independent of lithology and / or downhole conditions and corrected to account for changes in the hydrogen index; association calculated intensity difference samples with equalized intensities samples obtained before fracturing, to obtain samples of the intensities to fracture independent of the composition of rocks and / or from the well conditions and adjusted to account for changes in hydrogen index, comparing the intensities of the samples prior to fracturing, independent of the composition of rocks and / or from the well conditions and correct