METHOD OF DRILLING THE INCLINED AND HORIZONTAL WELLS Russian patent published in 2001 - IPC

FIELD: drilling of inclined and horizontal wells, particularly, methods of transmission of information from bottom-hole telemetering system to day surface in the course of well drilling. SUBSTANCE: invention provides for installation of lower and upper transceiving antennas which radiate and receive electromagnetic information signals. transmitted through drilling mud of drill pipe internal space. Lower antenna excites alternating pulse current which reaches through drilling mud the upper antenna to embrace it and return through wells of pipe string to lower antenna to form closed electric ring round antennas. EFFECT: higher reliability and quality of drilling of inclined and horizontal wells. 5 cl, 2 dwg