API N80(1) vs L80(1)
API N80(1) vs L80(1)
(OP)
In which case I have to used API 5CT N80(1) or L80(1) for production well? Can anyone describe the adventage of both material? I have reviewed both, but they are look like no significant differents. Thank for the advice





RE: API N80(1) vs L80(1)
Historically, N80 was introduced first. Some users preferred the quenched and tempered version. They didn't want to change the grade to require Q & T since the normalized product was popular (and a lower cost), so they introduced the L80 grade.
Since most performance calculations are based on minimum yield, they can often be interchanged. Many high-end users will require L80 only, however.
rp
RE: API N80(1) vs L80(1)
RE: API N80(1) vs L80(1)
RE: API N80(1) vs L80(1)
RE: API N80(1) vs L80(1)
I would be grateful for all help.
Sandy Manner
RE: API N80(1) vs L80(1)
How can I calculate the tensile strength and collapse strength of the following?:
13 3/8" API casing, 54.5 PPF, K-55, Range 3, perforated on 16% of it's surface area with uniformly spaced 5/8" holes.
RE: API N80(1) vs L80(1)
K-55 directly tells you the yield stength. For collapse pressure, it is a bit tricky, you can look up API 5C3.
salmon2