Operation whereby the well bore is made larger to carry out functions such as running casing, storing pipe, etc.
A machining process using a reamer to smooth and accurately size a previously cored, drilled, or bored hole. This process can be achieved by machine or by hand, however the type of reamer used is different for each process. See also hand reamer, machine reamer
Reaming refers to enlarging or shaping a hole in material, such as wood, metal or concrete.
An operation to restore a wellbore to its original diameter (occasionally, a wellbore will cave in).
re-drilling undersized holes to achieve full-size holes after physical pre-assembly to assure proper fitup
To enlarge the bore-hole. Usually required if the bit has worn down and has drilled a section of under-gauge hole or if there has been some deformation of the bore-hole.
A process used to remove metal from the inside of a valve guide and increase the guide hole size. It may be done to allow the use of oversize valve stems, restore the diameter after knurling, or finish a new insert guide to standard inside diameter.
Enlarging the diameter of a hole.
A type of drilling process by which a hole is made larger.