Recommended Practice 90, Annular Casing Pressure Management for Offshore Wells, First Edition Edition: 1st
American Petroleum Institute / 01-Aug-2006 / 84 pages

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Intended to serve as a guide for managing annular casing pressure in offshore wells. This guide is meant to be used for offshore wells that exhibit annular casing pressure, including thermal casing pressure, sustained casing pressure (SCP) and operator-imposed pressure.

This Recommended Practice covers monitoring, diagnostic testing, the establishment of a maximum allowable wellhead operating pressure (MAWOP) and documentation of annular casing pressure for the various types of wells that occur offshore. Included also is a discussion of risk assessment methodologies that can be used for the evaluation of individual well situations where the annular casing pressure is not within the MAWOP guidelines.

This Recommended Practice provides guidelines in which a broad range of casing annuli that exhibit annular pressure can be managed in a routine fashion while maintaining an acceptable level of risk.

Product Code(s): G09001,G09001

This product references:ANSI/API Bull 5C3 - Bulletin on Formulas and Calculations for Casing, Tubing, Drill Pipe, and Line Pipe Properties
API RP 14J (R2007) - Recommended Practice for Design and Hazards Analysis for Offshore Production Facilities
API RP 65 - Cementing Shallow Water Flow Zones in Deep Water Wells, First Edition
API Spec 17D (R2003) - Specification for Subsea Wellhead and Christmas Tree Equipment
ISO 10400:1993 - Petroleum and natural gas industries -- Formulae and calculation for casing, tubing, drill pipe and line pipe properties
ISO 11960:2004 - Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells
This product referenced by:API Std 65-Part 2 - Recommended Practice 90, Annular Casing Pressure Management for Offshore Wells, First Edition

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