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UBHO Sub ( Universal Bottom Hole Orientation Sub )
● Used in directional drilling BHA
● Manufactured from monel bar steel or ANSI 4140 / 4145M alloy steel
● Various O.D sizes and API or premium threaded connections are available
Description
China Vigor UBHO sub also known as a mule shoe sub. It is used in directional drilling BHA, which runs directly below a drill collar and contains a landing sleeve for directional survey equipment, providing fluid flow control at the bottom of the drill stem. due contains a landing sleeve, for MWD tools and directional survey equipment, and is used to establish the " high side of the tool" and determine the tool face offset and orientation in the wellbore. It is also used to establish the high side of the tool, which is essential for knowing the tool's orientation in the wellbore.
UBHO sub can be manufactured from monel bar steel or ANSI 4140 / 4145M alloy steel. Various O.D. sizes and API or premium threaded connections are available to meet specific directional drilling applications;
Techinical Parameters
|
Size |
Connection |
Remarks |
|
4-3/4" |
Pin and box 3 1/2" IF |
Used for small Muleshoe |
|
6-1/2" |
Pin and box 4 1/2" IF |
Used for medium Muleshoe |
|
6-3/4" |
Pin and box 4 1/2" IF |
Used for large Muleshoe |
|
8" |
Pin and box 6 5/8" REG |
Used for large Muleshoe |
UBHO Sub ( Universal Bottom Hole Orientation Sub )
The Universal Bottom Hole Orientation Sub is an innovative downhole tool designed to optimize directional drilling efficiency and provide precise wellbore positioning. With its unique magnetic orientation module, this universal bottom hole orientation sub reliably steers drill bits for superior trajectory control.
The UBHO sub consists of premium-grade drill collar tubular mated with a high-spec orientation module. The modules use advanced magnetometers to sense angular position and transmit this via modulated pulses.
It works by detecting spatial changes as drilling progresses and conveys this information to the surface. The drilling engineer can then make precise corrections to steer the bit. This closed-loop control paired with real-time data enables exceptional directional precision.
Features
- Enhances directional drilling productivity by enabling continuous orientation
- Suits a wide range of well inclinations from vertical to horizontal
- Provides accurate downhole azimuth measurements for precise wellbore placement
- Robust mag module withstands harsh drilling environments
- Fast transmission of orientation data to surface
applications
- Directional and horizontal well drilling
- Extended-reach wells with complex geometries
- Multilateral wells
- Relief well intersect drilling
- Coal bed methane drilling
- The UBHO Sub ( Universal Bottom Hole Orientation Sub ) is available in a range of sizes to suit different drilling requirements. The robust design withstands vibration, shock, and high temperatures during drilling.
FAQ
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