Casing and Bit Size Selection
An interactive casing and bit size selection chart: a first-pass selector of hole (bit) sizes and the casing and liner sizes that fit them — the starting point of a casing design.
Hole size
Casing
Hole size
Casing
Hole size
Hole size
Result
Finish the selection: a hole size on top, a casing at the bottom.
| # | String | in | mm | Clearance, mmPer side, by the pipe body: (hole − casing OD) / 2. |
|---|---|---|---|---|
| Low clearance | ||||
| Low clearance | ||||
| Low clearance | ||||
| Low clearance | ||||
| Low clearance | ||||
| Low clearance | ||||
| Low clearance | ||||
| Low clearance |
Pick any hole size to start.
How to use
- Click any hole size to start.
- Follow the lines: down to the casing run in that hole, up to the casing it is drilled out of. Only sizes that fit stay active.
- On the two lowest casing rows, switch Casing to Liner where the string hangs off the previous one.
- Click a selected size to drop it and everything beyond it.
Solid line — a standard fit. Dashed — low clearance by the pipe body; couplings are not considered.
Compiled from public sources such as Oil & Gas Journal and other industry publications. Check it against your loads, depths and hole conditions.
Casing and Bit Size Selection is part of the well design workflow in aide.lite — try it, it’s free.