This part of ISO 10427 provides minimum performance requirements, test procedures and marking requirements for bow-spring casing centralizers for the petroleum and natural gas industries. The procedures provide verification testing for the manufacturer’s design, materials and process specifications, and periodic testing to confirm the consistency of product performance. This part of ISO 10427 is not applicable to rigid or positive centralizers.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative reference
3 Terms and definitions
4 Requirements
4.1 Functions of a centralizer
4.2 Starting force
4.3 Restoring force
4.4 Frequency of testing
5 Testing equipment
5.1 Test stand
5.2 Instrumentation
5.3 Accuracy
5.4 Test pipe
6 Procedure for starting-force and running-force tests