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Product Description
A Crossover Sub is a critical downhole tool used in oil and gas drilling and completion operations to connect dissimilar thread types or sizes within a tool string or bottom hole assembly (BHA). Designed to API 7-1/7-2 standards, it ensures seamless compatibility between components like drill pipes, casing, and subs, enabling efficient transitions in complex wellbores. Ideal for vertical, directional, and HPHT wells, crossover subs minimize downtime and enhance operational flexibility.
| Technical Specifications
| Parameter | Specifications |
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| Material | 4140/4145 Steel, 13Cr, Duplex Stainless, API 5CT |
| Size Range | 2⅜" to 9⅝" OD, custom lengths up to 10 ft |
| Thread Types | API 5CT, NC, IF, Reg, Buttress, Premium |
| Pressure Rating | 5,000 – 20,000 psi |
| Temperature | -50°F to 400°F (-45°C to 204°C) |
| Standards | API 7-1/7-2, NACE MR0175, ISO 9001, API 5CT, API 5B |
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Comment & FAQ
1. Can crossover subs be reused across multiple wells?
A: Yes, if threads are undamaged and pressure-tested. Regular inspections are recommended.
2. What thread types do you support besides API standards?
A: We also machine metric, proprietary, and legacy thread profiles (e.g., ACME, STC).
3. How to prevent thread galling during installation?
A: Use API-approved thread compound and torque to recommended values.
4. Do you provide NACE certification for sour service?
A: Yes – materials and coatings comply with NACE MR0175/ISO 15156.
5. What’s the lead time for custom crossover subs?
A: Typically 3-5 weeks, depending on design complexity and material availability.
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Advantages✅ Operational Flexibility
✅ Enhanced Safety
✅ Cost Savings
✅ Corrosion Resistance
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SEO Recommendations
1）Title Tag:
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2）Meta Description:
“High-performance API crossover subs for drilling, completions, and workovers. Custom threads, NACE-certified, 20K psi rating.”
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