Swivel and eccentric weight to orient a roller sub
AssigneeWireline Engineering Limited
InventorRobert Neil Hall
Life of this patent
Estimating the term…
Abstract
A downhole device, adapted for use in wireline or slickline application, is provided for incorporation into a downhole string and movement in a wellbore. The device comprises means to orient the device in a wellbore, and one or more conveying means arranged to engage the inner surface of the wellbore and reduce the frictional coefficient. It may also incorporate an eccentric weight and/or a vibrator.
Claims30
A roller sub for incorporation into a downhole string and movement in a well-bore, the sub comprising at least one swivel device, an orientation device to rotationally orient the sub in a well-bore, and at least one conveyor selected from the group consisting of wheels and rollers arranged on the sub to engage the inner surface of the well-bore.
Dependencies are inferred from the claim text.