ISO 10427-2-2004 PDF

Full title and description

ISO 10427-2:2004 — Petroleum and natural gas industries — Equipment for well cementing — Part 2: Centralizer placement and stop‑collar testing. This part gives calculation methods for centralizer spacing and a procedure for stop‑collar testing and result reporting for use in well cementing operations.

Abstract

Provides calculations for determining centralizer spacing based on centralizer performance and desired standoff, applicable to deviated and dogleg wellbores, and specifies a procedure for testing stop collars and reporting the test results.

General information

• Status: Published (International Standard; last reviewed/confirmed in 2025).
• Publication date: 27 April 2004 (ISO edition 1, 2004-05).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.180.10 (Exploratory, drilling and extraction equipment).
• Edition / version: Edition 1 (2004).
• Number of pages: 14.

(General information as listed on the ISO catalogue entry for ISO 10427-2:2004.)

Scope

This part of ISO 10427 applies to equipment used in the cementing of oil and gas wells. It covers the analytical calculations and guidance needed to determine appropriate centralizer spacing (taking into account centralizer performance and desired standoff) in deviated and dogleg wells, and it provides a standardised test procedure and reporting format for stop collars used in the cementing string.

Key topics and requirements

• Methods to calculate centralizer spacing based on measured or specified centralizer performance and desired standoff (clearance between casing and borehole).
• Considerations for deviated and dogleg hole geometries when determining spacing and placement.
• Standardised procedure for stop‑collar (stop ring) testing, including test setup, acceptance criteria and reporting requirements.
• Data and performance reporting to support procurement, quality control and field installation decisions.

These topics and requirements are described in the ISO 10427-2:2004 text and supporting ISO catalogue summary.

Typical use and users

Used by drilling and completion engineers, cementing contractors, centralizer and downhole‑equipment manufacturers, test laboratories and QA/QC personnel involved in well construction. The standard supports design verification, vendor testing, field installation planning and acceptance reporting for centralizers and stop collars in petroleum and natural‑gas well cementing operations.

Related standards

ISO 10427 is a multi‑part series. Closely related documents include: ISO 10427‑1 (Part 1: casing bow‑spring centralizers — more recent editions exist, including a 2024 update for Part 1), ISO 10427‑3:2003 (Part 3: performance testing of cementing float equipment). ISO 10427-2 forms part of that family addressing different equipment and test methods used in well cementing.

Keywords

centralizer, centralizer spacing, standoff, stop collar, stop ring, well cementing, casing centralizer, deviated hole, dogleg, test procedure, performance testing, ISO 10427-2:2004, petroleum, natural gas.

FAQ

Q: What is this standard?

A: ISO 10427-2:2004 is an ISO international standard that provides calculation methods for centralizer placement and a standard procedure for testing stop collars used in well cementing for the petroleum and natural gas industries.

Q: What does it cover?

A: It covers centralizer spacing calculations (accounting for performance and desired standoff) for deviated and dogleg wells, and it defines how to test and report stop‑collar performance.

Q: Who typically uses it?

A: Drilling and completion engineers, cementing contractors, equipment manufacturers (centralizers/stop collars), testing laboratories and procurement/QC teams in the oil and gas sector.

Q: Is it current or superseded?

A: As listed in the ISO catalogue, ISO 10427-2:2004 is published and was last reviewed/confirmed in 2025; the ISO entry shows it remained the current edition at that review. ISO lifecycle notes also record periodic review actions and planning entries in 2024–2025. Users should check the ISO catalogue or national body for any subsequent revision or replacement before relying on the standard for procurement or regulatory compliance.

Q: Is it part of a series?

A: Yes — ISO 10427 is a multipart series addressing equipment for well cementing. Relevant parts include Part 1 (casing bow‑spring centralizers), Part 2 (this document) and Part 3 (performance testing of cementing float equipment). Part 1 has more recent editions published separately.

Q: What are the key keywords?

A: Centralizer, centralizer spacing, standoff, stop collar/stop ring, well cementing, casing centralizer, performance testing, ISO 10427.