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Safety Joint
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Bull Dog® Tool’s Safety Joints used in Drilling, Fishing, Cleanout, Drill Stem Testing, washover operations, or any string.
• Full 2-9/16-inch I.D. through safety joint.
• XT-39 Right Hand Release.
• 135 KSI Material.
• 734,000 lbs. Min. Tensile Strength.
• 7 Turn Release.
Applications
Bull Dog® Tool’s Safety Joints used in Drilling, Fishing, Cleanout, Drill Stem Testing, washover operations, or any string.
Features & Advantages
• Full 2-9/16-inch I.D. through safety joint.
• XT-39 Right Hand Release.
• 135 KSI Material.
• 734,000 lbs. Min. Tensile Strength.
• 7 Turn Release.
Specifications
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Description | QTY |
1 - Lower Half | 1 |
2 - Upper Half | 1 |
3 - O-Ring* 70D Nitrile | 2 |
4 - O-Ring* 70D Nitrile | 2 |
5 - Overall Length (in) | 38.75 |
6 - Bore Through I.D. (in)* | 2.583 |
*Redress Part
Frequently Asked Questions (FAQs)
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What is a Bull Dog® Safety Joint used for?
A Safety Joint is used to create a predetermined separation point in the tool string. It allows the operator to back off and recover the upper string if the lower tools become stuck or unworkable — reducing the risk of losing the entire BHA.
How does the Bull Dog® Safety Joint work?
It’s made with precision right-hand threads (or left-hand, on request). When the joint is backed off at surface torque spec, it cleanly separates, allowing you to retrieve the string above it while leaving the stuck portion below. Some models are torque-through rated to handle rotation and jarring prior to release.
When should I include a Safety Joint in my string?
Use a Safety Joint when:
Running fishing, milling, or cleanout tools
Operating in tight-hole, unknown conditions, or collapsed casing
You need a fast, mechanical contingency plan
You're using expensive tools below and want a defined backup point
What sizes and thread types are available?
Bull Dog manufactures Safety Joints in multiple sizes, including:
1-5/8" to 9" O.D.
¾" sucker rod up to 6-5/8" Reg connections
Right- or left-hand threadsCustom torque specs and lengths can be configured to match job requirements.
Can Safety Joints be reused or re-dressed?
Yes — Bull Dog Safety Joints are field-serviceable and redressable. Replacement thread connections and seals can be installed as needed, and the tool can be re-torqued and rerun after inspection.