METHOD FOR HORIZONTAL WELL BORE DRILLING ON THE BASE OF GEOLOGICAL INVESTIGATIONS

摘要

FIELD: well drilling, particularly to provide designed well bore position on the base of geological investigations of drilled rock.;SUBSTANCE: method involves receiving information concerning drilling tool location from well bottom by means of land-based instruments; taking rock drilled out from well bottom after receiving of data by well operation investigations, directional survey and gamma-ray logging; performing geological-petrophysical and lithofacies drilled-out rock analysis; tabulating said analysis results to obtain lithologic-and-petrographic parameter and facies property table; plotting correlation scheme of lithologic-and-facies cut condition referenced to vertical depths with marking the most oil and gas advantageous intervals; controlling well bore path in productive bed to provide drilling tool movement through productive bed. Complex geological-petrophysical and lithofacies drilled out rock analysis includes macro description of rock under binocular, carbonate metering, luminescent-bituminological analysis, documentary photographing referred to vertical depths in white light and ultra-violet radiation; thermal vacuum degassing, petrophysical parameter, namely porosity, mineralogical and volumetric density investigation and determination of oil or gas content in drilled out rock with the use of liquid distillation apparatus.;EFFECT: increased reliability and minuteness of geological information obtained at horizontal well bore bottom and improved accuracy of well navigation by drilling tool directing relatively reservoir bottom and roof.;2 cl, 2 dwg, 1 ex