A New Drilling Speed ​​Increase Magnetic Actuator

Abstract

The invention discloses a novel drilling speed increasing magnetic exciter which comprises an upper connector, a barrel, a first rotor, a stator, an upper sealing block, a rotating sleeve, a lower sealing block, a lower connector, a second rotor, screws, a transmission shaft, arc permanent magnets, an anvil, an impact sleeve, steel balls, flow guiding holes and two sealing rings. Power of the magnetic exciter is supplied by a drilling-fluid-driven hydraulic motor, and the magnetic exciter is simple in structure and short and can be applied to deflecting operation and bending holes; low-amplitude high-frequency axial impact force can be exerted on a drill bit, so that the stick-slip phenomenon of the drill bit is greatly lowered, and the mechanical drilling speed is greatly increased; by providing the axial impact force for the drill bit periodically, torque transmitted to the drill bit from a drill stem nipple near the drill bit can be stabilized, the possibility of drill bit failure caused by drill clamping is lowered, tripping operation cost is reduced, and the economic benefits are high; and the magnetic technology is adopted, energy loss is small, and the number of quick-wear parts is small.

Description

technical field [0001] The invention belongs to the technical field of energy exploration, in particular to a novel drilling speed increasing magnetic actuator. Background technique [0002] When a bit drills through hard or abrasive formations, it often doesn't have enough torque to break up the formation, causing the bit to stop turning momentarily. At this time, the torsional energy is stored in the drill string, and the drill string will be tightened like clockwork. Once the torque required to shear and break the formation is generated, the drill string energy will be released, and a higher than usual force will be applied to the drill bit. Excessive shock loads, eventually shattering the diamond teeth and causing the bit to fail. [0003] During the drilling process, tripping out and replacing the failed drill bit is an important factor that increases the drilling cost, and the stick-slip phenomenon of the drill bit or BHA is likely to cause the drill bit to fail. Co...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of drilling speed increasing magnetic actuator, aiming to solve the problem that the stick-slip phenomenon of the drill bit or BHA is easy to cause the drill bit to fail

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