Rotary steering well drilling device
A rotary steerable drilling and offset technology, which is applied in directional drilling, drilling equipment, drilling automatic control system, etc., can solve the problems that the wellbore trajectory cannot be controlled continuously and in real time, and it is difficult to meet the urgent needs of efficient development of oil and gas fields, so as to improve the Drilling efficiency and safety, the effect of improving control ability
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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0021] Refer to attached figure 1 , a rotary steerable drilling device, the mandrel 1 is installed inside the orienting cylinder 2, and the mandrel 1 and the orienting cylinder 2 are formed along the shaft by an annular convex edge arranged on the outer wall of the mandrel 1 and an annular groove arranged on the inner wall of the orienting cylinder 2. To move and rotate in the circumferential direction, the mandrel 1 is processed with upper bypass holes 9 and lower bypass holes 19 distributed at intervals, wherein the inner wall of the orientation cylinder 2 on the upper part of the upper bypass holes 9 is provided with an annular positioning cavity, and the positioning cavity A locator 6 and a positioning key 7 are arranged inside, and the locator 6 and the positioning key 7 are fixedly connected to the mandrel 1 and the orientation cylinder 2 respec...
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