Top drive driver of rotating control head

Abstract

The invention discloses a top drive driver of a rotating control head, which belongs to the technical field of rotating control heads. The top drive driver of the rotating control head comprises a shell sleeved on a drill rod, wherein the shell and the drill rod can relatively rotate; the lower part of the shell is connected to a center pipe of the rotating control head or a rubber core of a rotary blowout preventer, and a plurality of rollers are arranged in the shell; the rollers are uniformly distributed on the same circumference outside the drill rod, and two ends of each roller are respectively connected to the inner wall of the shell through spring mechanisms; and the rollers are clung to the outer wall of the drill rod through the spring mechanisms, and the rollers are matched with the outer wall of the drill rod and can roll in the axial direction of the drill rod. When the drill rod rotates, the shell is driven through the rollers to synchronously rotate. The top drive driver of the rotating control head solves the problem of the currently used top drive unbalanced drilling rotating control head that the rubber core is not driven and is badly damaged, and provides rotation power for the rubber core of the rotating control head or the rotary blowout preventer in the petroleum and natural gas unbalanced drilling operation under top drive force.

Description

technical field [0001] The invention relates to oil, natural gas and unconventional natural gas top drive force underbalanced drilling devices, in particular to a drive device that provides power for a rotary control head or a rotary rubber core of a rotary blowout preventer in top drive underbalanced drilling operations. Background technique [0002] At present, in the exploitation of oil, natural gas and unconventional natural gas, in order to achieve high-efficiency, rapid and low-cost development, underbalanced drilling operations are mostly used. The rotary control head or rotary blowout preventer is the key and core equipment in underbalanced drilling operations. It mainly Depending on the interference fit between the rubber core and the drill pipe, the deformation of the rubber core is used to seal the drilling fluid pressure. Therefore, the protection of the rubber core of the rotary control head or the rotary blowout preventer is the most critical safety measure. ...

AI Technical Summary

Problems solved by technology

[0004] The existing rotary control head or rotary blowout preventer all use the ancient kelly to drive the rubber core to rotate, which cannot be driven during top drive drilling operations, resulting in severe wear of the rubber core and a greatly reduced lifespan. There are hidden dangers to drilling safety and a large number of Waste of human and material resources

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