Shale Tech Solutions SRL distribuidor exclusivo de FANN para la Argentina
Fann offers a complete selection of drill pipe corrosion coupons
Fann corrosion coupons are made of Cold Drawn seamless mechanical tubing from type 4130 machine-finish steel.
The placement of corrosion test rings in the drill string is one of the more common techniques used to evaluate the corrosiveness of drilling-fluid environments on the drill string and other steel equipment.
Removal and examination of these rings after a period of exposure down-hole can be highly informative as to the corrosiveness of the drilling fluid, as well as to the type of corrosion encountered. An examination of scales and pits on the exposed rings gives clues as to the cause of the corrosion, thus aiding in choosing proper remedial action.3
Ordering Information
|
Part No. |
Drill Pipe Size & Type |
Coupon Size |
| 210091 | 2-7/8 in. Internal Flush and 3-½ in. Slim Hole | 2 1/2-in OD x 0.250-in wall |
| 210092 | 3-1/2 in. Extra Hole and 3-½ in. Full Hole | 2 3/4-in OD x 0.188-in wall |
| 210093 | 3-1/2 in. Internal Flush and 3-½ in. Extra Hole | 3-in OD x 0.313-in wall |
| 210094 | 4 in. Full Hole | 3 1/4-in OD x 0.250-in wall |
| 210095 | 4 in. Internal Flush and 4-1/2 in. Extra Hole | 3 3/4-in OD x 0.3125-in wall |
| 210096 | 4-1/2 in. Full Hole, 4-1/2 in. Extra Hole, 4 in. Internal Flush |
3 5/8-in OD x 0.375-in wall |
| 210097 | 4-1/2 in. Internal Flush 5 in. Extra Hole |
4 1/2-in OD x 0.3125-in wall |
| 210098 | 5-9/16 in., 5-1/2 in. API Regular or Full Hole and 6-5/8 in. API Regular | 4 5/8-in OD x 0.500-in wall |
| 210099 | 6-5/8 in. Full Hole K= 202 | 4 11/16-in OD x 0.282-in wall |
| 210100 | 4-1/2 in. Extra Hole | 3 13/16-in OD x 0.200-in wall |
| 210101 | 6-5/8 in. Full Hole K= 123.3 | 5 3/4-in OD x 0.375-in wall |
| 210102 | 5 in. x H Tool Joint | 4 3/16-in OD x 0.2185-in wall |
Specifications
| Composition |
% |
|
| C | Carbon |
.28 – .33 |
| Mn | Manganese |
.40 – .60 |
| P | Phosphorus |
.035 |
| S | Sulfur |
.040 |
| Si | Silicone |
.15 – .30 |
| Cr | Chrome .80 – |
1.10 |
| Mo | Molybdenum |
.15 – .25 |