DEVICE FOR DRILLING OF INCLINED AND HORIZONTAL WELLS Russian patent published in 2003 - IPC

FIELD: drilling of inclined and horizontal wells. SUBSTANCE: device is, particularly, used in designs of special drill pipes used in system of information transmission from inclinometer to surface apparatuses where chokes for information transmission are installed in pins and boxes. Mounting units are introduced into main and additional pins and boxes of drill pipes. Mounting units ensure electrical connection of chokes installed in boxes and pins of drill pipes through connecting cable located along wall of drill pipe and secured in mounting units made in the form of cylinders and ensuring sufficient passage holes for passage of mud and geophysical instruments. EFFECT: increased drilling reliability and simplified technology of drill pipe manufacture. 5 cl, 4 dwg