ISO 10427-2:2004 provides calculations for determining centralizer spacing, based on centralizer performance and desired standoff, in deviated and dogleg holes in wells for the petroleum and natural gas industries. It also provides a procedure for testing stop collars and reporting test results.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Methods for estimating centralizer placement
4.1 General
4.2 Standoff ratio calculation
4.3 Buoyed weight of casing
4.4 Calculations for centralizer spacing
5 Procedure for testing stop collars
5.1 General
5.2 Apparatus
5.3 Test procedure
5.4 Reporting of test results
Annex A Documentation of stop-collar test results (informative)