Mechanical rotary guide tool

• Main Authors: WANG JIE, TIAN JIALIN, LIU GANG, HU ZHICHAO, WEN FENG, DENG ZHE, LIU YADI
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2020
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a mechanical rotary guide tool. The mechanical rotary guide tool comprises an auxiliary unit, a control unit and an execution unit. According to the technical scheme, when thepumping pressure is increased, drilling fluid enters a cavity in the upper end of a reverser through a hole in the upper end of a center pipe to compress a reset spring at the lower end to move downwards, due to the fact that a pin fixed to an upper shell cooperates with a special groove channel on the outer wall of the reverser, the reverser rotates by a certain angle while moving downwards, a switch cooperating with the reverser in a wedge shape is driven to rotate and return back to the upper end cooperation position, high-pressure drilling fluid enters the execution mechanism through a hole in the lower end of the center pipe and a radial hole of the switch, a push block moves outwards along a cavity of a guide joint to enable a guide push wing to expand around a radial rotating shaftto push against the rock w