Drilling apparatus and related methods

Abstract

According to embodiments of the present disclosure a drilling sub apparatus that may be coupled to a drill pipe. The drilling sub apparatus may have a pendulum member that moves from a first position to a second position. In the first position, a bottom region of the pendulum member covers or seals apertures that thereby close a fluid pathway from an inner region of the drilling sub apparatus through elements of the drilling sub apparatus through to one or more chambers between a pendulum sleeve and a stabilizer sleeve of the drilling sub apparatus. In the second position, the bottom region of the pendulum member may uncover or unseal from apertures that thereby open the fluid pathway from an inner region of the drilling sub apparatus through elements of the drilling sub apparatus through to the one or more chambers. The fluid that flows from the inner region to the one or more chambers may exert a force on an inner pipe of the drilling sub apparatus, and thereby on the drill pipe, to move the drill pipe towards a vertical position. The pendulum member may move between the first and second positions in response to the angle of the drilling sub apparatus relative to a force of gravity and may do so without the use of electronics, communication channels, or the like.