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UBHO Sub (Universal Bottom Hole Orientation Sub)
UBHO Sub is a directional drilling BHA tool used to establish bottom hole orientation and toolface reference. It is widely applied with mule shoe and survey systems in directional drilling operations.
Category:
Downhole Tools
The UBHO Sub (Universal Bottom Hole Orientation Sub) is a key BHA component used in directional drilling operations to establish and reference the toolface orientation inside the wellbore.
It is typically run directly below the drill collar and works together with mule shoe and directional survey equipment, providing a clear reference for the “high side” of the tool during directional drilling.
UBHO Sub is also commonly referred to as:
- Universal Bottom Hole Orientation Sub
- Universal Bore Hole Orientation Sub
- Mule Shoe Sub
- Standard UBHO Sub for directional drilling BHA
- Non-magnetic UBHO Sub for MWD / survey operations
- Customized OD sizes for specific directional applications
- Compatible with various mule shoe and survey systems
- Provides accurate bottom hole orientation reference
- Designed for directional drilling and BHA alignment
- Non-magnetic versions available for survey accuracy
- High-strength alloy or non-magnetic materials
- Reliable performance in demanding downhole conditions
- AISI 4145H modified alloy steel
- Non-magnetic materials such as P530 / P550 available
- Fully heat-treated for strength and durability
- Manufactured under controlled machining processes
| Size | Connection | Remarks |
|---|---|---|
| 4 3/4" | Pin & Box 3 1/2" IF | Used for small mule shoe |
| 6 1/2" | Pin & Box 4 1/2" IF | Used for medium mule shoe |
| 6 3/4" | Pin & Box 4 1/2" IF | Used for large mule shoe |
| 8" | Pin & Box 6 5/8" REG | Used for large mule shoe |
- Material certification available
- Heat treatment records
- Dimensional inspection
- Final inspection before delivery
- OD size and hole size requirement
- Connection type (IF / REG / premium)
- Standard or non-magnetic material requirement
- Application environment and BHA configuration
- Quantity and delivery schedule
Unionlever OFS supplies UBHO Subs designed for reliable bottom hole orientation in directional drilling operations, with both standard and non-magnetic options available.
We support engineering selection, customization, and trial orders, helping customers reduce communication time and ensure correct tool configuration from the first RFQ.
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sales@unionleverofs.com
ofs@unionlever.com
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Building upon more than a decade of field experience, Unionlever OFS offers a comprehensive portfolio covering downhole drilling tools, fishing tools, handling tools, well control equipment, cementing tools, and solid-control systems.
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Unionlever Oilfield Equipment Co., Limited
A Member of
Unionlever International Group Limited
(Established Since 2010)
"To be a globally trusted leader in oilfield equipment and integrated supply solutions."
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