GET MORE FROM YOUR WELLBORE INVESTMENT
Our Tieback Mill Assembly incorporates two mills for preparing an existing liner top to accept a tieback seal stem.
Innovative Features
- Bronze lower mill polishes tieback ID without damaging the seal bore surface
- Top mill removes undesirable cement at liner top; shapes tieback sleeve for seal stem stabbing
- Drill pipe connection enables cleanout workstring and bit to be run inside liner top during tieback cleanout
| Tieback Sleeve ID (in.) | Top Dress Mill OD (in.) | Polishing Mill OD (in.) | Top Connection (in.) | Bottom Connection (in.) |
|---|---|---|---|---|
| 5.750 | 5.190 | 3-1/2 IF | 3 Stub Acme | |
| 5.500 | 5.750 | 5.440 | 3-1/2 IF | 3 Stub Acme |
| 5.750 | 6.325 | 5.690 | 3-1/2 IF | 3 Stub Acme |
| 7.375 | 8.250 | 7.315 | 4-1/2 IF | 4-1/4 Stub Acme |
| 7.625 | 8.250 | 7.565 | 4-1/2 IF | 4-1/4 Stub Acme |
