METHOD OF INCLINED AND HORIZONTAL WELLS BORING Russian patent published in 2004 - IPC

FIELD: well boring, particularly for well directional survey during boring thereof.

SUBSTANCE: method involves boring vertical well borehole by means of cracker including square kelly for rotor drilling and a number of seriously connected well tubes provided with bit on ends thereof; taking cracker out of well; mounting downhole motor and kick sub with lender means on cracker; putting cracker into well; putting inclinometer into cracker and fixing inclinometer on lender means; increasing cracker by seriously connected well tubes up to reacting well bottom by bit; arranging lower pipe sub with the first electronic information transmitter arranged inside thereof on cracker so that inclinometer is connected by logging cable with the first electronic information transmitter which in turn is linked by wireless information transmission elements with control and indicator unit; inserting connected well tubes in lower pipe sub; arranging intermediate pipe subs on both ends of each well tube with each intermediate pipe sub having wireless information transmission elements connected to one end thereof and at least two electrical connections located on another end thereof; linking electrical connectors of pipe subs with the use of cable segments provided with electrical connectors, wherein each cable segment is arranged inside corresponding well tube and electrically connected with corresponding electrical connectors of intermediate pipe sub; installing ball cock; arranging upper pipe sub on top of ball cock; locating the second electronic information transmitter connected with the first electronic information transmitter and with control and indicator unit through removable means installed on rotary swivel in upper pipe sub; switching on rotor drive for drilling linear inclined or horizontal well part after reaching predetermined well profile angle; performing control of well profile by drilling direction and well inclination angle with the use of data obtained from control and indicator unit and inclinometer.

EFFECT: increased reliability if signal transmission.

9 cl, 11 dwg