API Extreme Line (EL) Casing Thread Inserts
Ideal for: Oil & Gas Casing, Deep Well Drilling, Extreme Pressure Seals.
- Product Standard: API Extreme Line (EL) Casing laydown threading inserts.
- Specialized Profile: Engineered for the integral flush joint “Extreme Line” connection used in high-pressure oil wells.
- Heavy Duty Sizes: Robust 1/2″ (22mm) I.C. format handles the high cutting load, superior to standard 16er threading inserts.
- Connection Coverage: Covers standard casing sizes from 4″ up to 10-3/4″ with specific taper and pitch combinations.
- Versatility: Premium threading inserts for lathe operations, available in both External (ER) and Internal (IR) configurations.
- Material: Tough carbide threading inserts designed to cut heat-treated casing pipe steel.
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Product Overview
Manufacture high-integrity casing connections with our API Extreme Line (EL) laydown threading inserts. Unlike standard API Round or Buttress threads, the Extreme Line connection features a unique integral joint design with a metal-to-metal seal, requiring high-precision inserts to maintain seal integrity under extreme downhole pressures.
These carbide threading inserts are engineered to cut the specific 6 TPI and 5 TPI profiles with the correct taper, ensuring the box and pin members mate perfectly. The substantial 1/2″ I.C. size provides the rigidity needed for these heavy cuts, a task beyond the capacity of a standard 16er threading insert.
Key Features & Benefits
- API Compliance: Precision ground to produce the accurate thread form and taper required for Extreme Line certification.
- Optimized Grade: High-toughness carbide withstands the interrupted cuts and abrasive nature of casing steel.
- Matched Sets: Available in paired External and Internal models to ensure connection compatibility.
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Directional Options: We provide standard right-hand solutions and can supply left hand thread insert models for specialized string configurations.
API EL Insert Model
| TPI | L | I.C. | Taper | External Model | Internal Model | X | Y | Connection Size |
|---|---|---|---|---|---|---|---|---|
| 6 | 22 | 1/2″ | 1.5 | 22ER6EL1.5 | 22IR6EL1.5 | 1.9 | 1.9 | 4″ ~ 7 5/8″ |
| 5 | 22 | 1/2″ | 1.25 | 22ER5EL1.25 | 22IR5EL1.25 | 2.4 | 2.3 | 8 5/8″ ~ 10 3/4″ |
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