Go & No Go Gauge Rig Video
Go & No Go Gauge
Here we have a go & no go gauge ring video that we had recorded live a few years back. Take a look as I never knew about it before seeing this before myself.
A go-no gauge (or go/no-go) refers to an inspection tool used to check a work piece against its allowed tolerances. Its name is derived from two tests: the check involves the work piece having to pass one test (go) and fail the other (no-go). This instance of a work piece would be the PDC drill bits we use on a regular basis.
FIXED CUTTER BITS – RING GAUGING
Any fixed cutter bit should be ring gauged prior to running in the hole. Stabilizers should also be calipered or gauged to verify they meet API-approved outside dimension tolerances as shown in
the following table. Fixed cutter bits should not be larger than the nominal diameter.
A “no go” gauge is used to ensure a bit is not smaller than allowed and, as the name implies, it should not go or slip down the entire length of the bit. A “go” gauge ensures a bit is not larger than allowed and should slip down the entire bit. Check Halliburton IADC Bit Grading Guide HERE
Also came across this excellent bit grading PDF from BESTEBIT found HERE.
In their PDF they write that Procedure:
- Use a “No-Go PDC” gauge ring
- Place the gauge ring over the
largest diameter: PDC cutter or
- Pull the ring tight to one side
- Measure the opposing size
- Record the distance to the nearest 1/16th of an inch
Good read & one of the better bit grading guides we’ve seen in a while so check it out. So let’s get into the video & don’t forget to comment below.
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