Heavy drilling tools and refinery equipment
Downhole tools
A roller reamer is run in the bottom-hole assembly to keep the hole in gauge and to stabilise the string.
Roller reamers sit in the drill string above the bit. The rollers bear on the borehole wall. They dress the hole back towards the bit size and they steady the bottom-hole assembly, which reduces the chance of an under-gauge hole and of the string wearing against one side. They are not the bit, and they are not a hole opener sized to step the hole up to a new diameter. If the job is to enlarge the hole, say that, and we will quote a hole opener or an under-reamer instead.
The order names the hole size, the body outside diameter, the connection up and down, and whether the rollers are for a soft or a hard formation.
| Duty | Keep the drilled hole in gauge and steady the assembly |
|---|---|
| Where it runs | In the bottom-hole assembly, above the bit |
| Named on the order | Hole size, connections, roller type |
| Not this product | The drill bit, or a hole opener for a larger diameter |
| Evidence | Dimensional sheet when the maker supplies it |
A datasheet will be attached when measured results are on file.
Request a quoteWhat it is used for
Run above the bit, the rollers bear on the borehole wall and keep the hole at gauge. They also steady the bottom-hole assembly. They do not replace the bit, and they are not a hole opener.
The order
We quote the piece you name. A missing size or standard is a question, not a guess.
The gauge the rollers must dress.
Thread up and thread down.
Soft-formation or hard-formation cutters.
Supply
The specification written on the order.
Mill or material certificates when the maker provides them.
Identity marks checked against the packing list.
A performance figure is published only when a datasheet is attached.
Use the quote button. Include the duty, the quantity and where it has to be delivered. We reply on business days.
Write to info@edatm.com or telephone +44 7570 624325. Replies go out on business days, Monday to Friday, 08:30–18:00.
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