What is ubho in drilling?

An universal bottom hole orienting sub (UBHO) and fishing tool & technique are designed for the retrievable probe type MWD tool which used to during oil & gas wells. The UBHO sub is used in a directional drilling BHA. UNIVERSAL BOTTOM HOLE ORIENTATION SUBS: Used to house the float valve and provides for fluid flow control at the bottom of the drill stem. Universal Bottom Hole Orientation (UBHO) Sub This device is typically run directly below a drill collar and contains a landing sleeve for directional survey equipment. The Universal Bottom Hole Orientation (UBHO) Sub is used in a directional drilling BHA. Measurement while drilling (MWD) is a technology that allows information about physical parameters in the area adjacent to the drill pipe screen to be.