This paper gives a complete investigation,make up tests and running tests for some tubings and casings.It is considered that tubing and casing galling is not only related to product quality, but also abnormal operation.In order to guarantee bought tubing and casing quality,the complementarity specification on make up and break out test for tubing and casing specimens taken from the product
The new API 5B Specification (16th Edition) has already been published in December, 2017. The effective date of this edition is July 1, 2018. The 16th Edition has made some major changes. Now we have compiled these changes into a single document.
Based on the findings from oilfields and oil equipments manufacturers’ use of working gauges and periodic recalibrations, due to improper management, use & care by some companies, the gauges will lose their accuracy and are no longer fit for gauging.