US 12,098,605 B2 · Drilling tractor tool

Abstract

A drilling tractor tool in a drill string includes a rotating mandrel having an engagement part configured to rotate with the drill string; and a static sleeve disposed on the rotating mandrel configured to remain stationary during rotation of the rotating mandrel. The static sleeve includes a plurality of pockets that form a pathway from an interior of the static sleeve to an exterior of the static sleeve. The drilling tractor tool includes a plurality of force applicators each disposed in a respective pocket of the plurality of pockets of the static sleeve. The plurality of force applicators configured to extend through the respective pocket and apply a forward thrust to the drill string when extended. The engagement part of the rotating mandrel is configured to contact and cause to extend each of the plurality of force applicators respectively as the rotating mandrel rotates.

Claims20

Dependent claims

A drilling tractor tool in a drill string comprising:

a rotating mandrel having an engagement part configured to rotate with the drill string;
a static sleeve disposed on the rotating mandrel configured to remain stationary during rotation of the rotating mandrel, the static sleeve comprising a plurality of pockets that form a pathway from an interior of the static sleeve to an exterior of the static sleeve;
and
a plurality of force applicators each disposed in a respective pocket of the plurality of pockets of the static sleeve, the plurality of force applicators configured to extend through the respective pocket and apply a forward thrust to the drill string when extended,
wherein the engagement part of the rotating mandrel is configured to contact and cause to extend each of the plurality of force applicators respectively as the rotating mandrel rotates.

2 more elements

Dependencies are inferred from the claim text.

Drilling tractor tool

Life of this patent

Drilling tractor tool

Life of this patent

Abstract

Claims20