Standard Practice for Examination of Drillstring Threads Using the Alternating Current Field Measurement Technique

Importancia y uso:

5.1 The purpose of the alternating current field measurement method is to evaluate threads for surface breaking discontinuities such as fatigue cracks running along the thread root. The examination results may then be used to determine the fate of the test piece. This may involve re-examination by an alternative technique, immediate scrapping of the test piece, or reworking to remove discontinuities (beyond the scope of this practice). This practice is not intended for the examination of threads for non-surface breaking discontinuities.

Subcomité:

E07.07

Referida por:

E0543-21, E0543-21

Volúmen:

03.04

Número ICS:

75.180.10 (Exploratory, drilling and extraction equipment)

Palabras clave:

alternating current field measurement; drillstring; electromagnetic examination; ferromagnetic material; non-magnetic material; root; thread;