![DIRECTIONAL DRILLING TECHNOLOGY: 21. Measurement While Drilling (MWD) and its Application in Directional Drilling DIRECTIONAL DRILLING TECHNOLOGY: 21. Measurement While Drilling (MWD) and its Application in Directional Drilling](http://2.bp.blogspot.com/-KNmclHnZRm0/TiksHio6UwI/AAAAAAAAAXU/h1MM92iPqa8/s1600/mwd_pic.jpg)
DIRECTIONAL DRILLING TECHNOLOGY: 21. Measurement While Drilling (MWD) and its Application in Directional Drilling
Drilling Technology Quiz - The UBHO sub is used in a directional drilling BHA. Sometimes referred to as a mule shoe sub, this device is typically run directly below a drill collar
![US7513302B2 - Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use - Google Patents US7513302B2 - Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use - Google Patents](https://patentimages.storage.googleapis.com/e8/cd/2b/2405de4f03be36/US07513302-20090407-D00000.png)
US7513302B2 - Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use - Google Patents
![Universal Bottom Hole Orientation (UBHO) Sub and Mule Shoe Subs - China Universal Bottom Hole Orientation (UBHO) Sub, Mule Shoe Subs | Made-in-China.com Universal Bottom Hole Orientation (UBHO) Sub and Mule Shoe Subs - China Universal Bottom Hole Orientation (UBHO) Sub, Mule Shoe Subs | Made-in-China.com](https://image.made-in-china.com/202f0j00nRmbFWPrQZkO/Universal-Bottom-Hole-Orientation-UBHO-Sub-and-Mule-Shoe-Subs.jpg)