METHOD OF DRILLING INCLINED AND HORIZONTAL WELL BORES Russian patent published in 2010 - IPC E21B7/04 E21B47/12 

FIELD: oil-and-gas production.

SUBSTANCE: proposed method comprises using bottom hole telemetry system made up of measuring unit incorporated with bottom-hole assembly (BHA) and connected via conductor with acoustic radiator connected, in its turn, via drilling string with acoustic signal receiver-transponder mounted on drilling jig swivel barrel. In drilling the section of well bore for jig, said radiator is secured in BHA adapter at a minimum distance from measuring module head part. In drilling ahead of zenith angle intensive increase section with subsequent penetration of well bore in productive strata, said radiator and adapter are displaced into drilling string wellhead section. Note here that well bore section is dilled to the entrance of radiator into jig shoe. In further drilling of well bore through productive strata, adapter with another radiator, identical to aforesaid one, is mounted to be electromechanically connected via extra conductor with hydrophone. The latter is arranged at a minimum distance from the first radiator. Note here that well bore is dilled, mainly, to the entrance of second radiator into jig shoe.

EFFECT: expanded performances and higher efficiency.

2 dwg