Drilling machine angle accurate positioning detection and control system

Abstract

The invention discloses a drilling machine angle accurate positioning detection and control system. The drilling machine angle accurate positioning detection and control system comprises a driving system, a detection device and an actuator corresponds to the driving system, wherein the driving system comprises a top driving system or a rotary disk driving system. The drilling machine angle accurate positioning detection and control system has the advantages that the adopted angle detection device can automatically calculate the rotating angle of a rotating shaft of a motor, calculation is accurate, the accuracy is high, the anti-seismic property is good, machining is easy, and cost is low; since a dynamic tool face controller is used for achieving dynamic control over a downhole orientation power drilling tool face, when the drilling tool face drifts, the dynamic tool face controller can be operated in real time to adjust the drilling tool face, and the situation that equipment stops drilling and a drilling tool is lifted up is avoided; as a result, loss of the equipment is reduced, manpower and material resources are saved substantially, and downhole accidents are greatly reduced at the same time.

Description

technical field [0001] The invention relates to a detection and control system for precise positioning of downhole tool face angles, in particular to a detection and control system for precise positioning of drilling rig angles. Background technique [0002] In conventional drilling operations, the vertical well section and the stabilizing section are usually drilled by top drive or rotary drilling, and if the steering drilling section uses the downhole angled deflection power drilling tool, the sliding drilling method is usually used. Under conditions such as adjustment, formation lithology changes, and wear and tear of dynamic drilling tools, it is easy to cause drilling tool face drift, resulting in failure of wellbore trajectory control and other problems. Faced with this situation, the usual practice is to reset the tool face by stopping drilling and lifting the drilling tool after the downhole tool face has drifted, which will affect the operating timeliness. At the s...

AI Technical Summary

Problems solved by technology

[0002] In conventional drilling operations, the vertical well section and the stabilizing section are usually drilled by top drive or rotary drilling, and if the steering drilling section uses the downhole angled deflection power drilling tool, the sliding drilling method is usually used. Under the conditions of adjustment, stratum lithology change, power drilling tool wear and other conditions, it is easy to cause drilling tool face drift, resulting in failure of wellbore trajectory control and other problems

Faced with this situation, the usual practice is to reset the tool face by stopping drilling and lifting the drilling tool after the downhole tool face has drifted, which will affect the operating timeliness

At the same time, in the sliding drilling process of conventional steerable drilling tools, because the drilling tool cannot rotate, the application of drilling pressure is delayed, the wellbore cleaning is difficult, and it is easy to cause problems such as low operating efficiency and complicated procedures.

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