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    API RP 90:2006 Annular Casing Pressure Management For Offshore Wells. - 1st Edition

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    Suryo Ahmed
    This document provides a summary of API RP 90:2006, which establishes guidelines for managing annular casing pressure in offshore wells. It discusses monitoring, testing, and establishing maximum allowable wellhead operating pressures. It also describes using risk assessments to evaluate wells that do not meet the guidelines. The document is intended to help manage routine annular pressure cases while maintaining an acceptable risk level, and discusses using risk assessments for non-routine cases.

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    API RP 90:2006 Annular Casing Pressure Management For Offshore Wells. - 1st Edition

    Uploaded by

    Suryo Ahmed
    260 views2 pages
    This document provides a summary of API RP 90:2006, which establishes guidelines for managing annular casing pressure in offshore wells. It discusses monitoring, testing, and establishing maximum allowable wellhead operating pressures. It also describes using risk assessments to evaluate wells that do not meet the guidelines. The document is intended to help manage routine annular pressure cases while maintaining an acceptable risk level, and discusses using risk assessments for non-routine cases.

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    dokumen.tips_api-rp-90.doc

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    This document provides a summary of API RP 90:2006, which establishes guidelines for managing annular casing pressure in offshore wells. It discusses monitoring, testing, and establishing maximum allowable wellhead operating pressures. It also describes using risk assessments to evaluate wells that do not meet the guidelines. The document is intended to help manage routine annular pressure cases while maintaining an acceptable risk level, and discusses using risk assessments for non-routine cases.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    260 views2 pages

    API RP 90:2006 Annular Casing Pressure Management For Offshore Wells. - 1st Edition

    Uploaded by

    Suryo Ahmed
    This document provides a summary of API RP 90:2006, which establishes guidelines for managing annular casing pressure in offshore wells. It discusses monitoring, testing, and establishing maximum allowable wellhead operating pressures. It also describes using risk assessments to evaluate wells that do not meet the guidelines. The document is intended to help manage routine annular pressure cases while maintaining an acceptable risk level, and discusses using risk assessments for non-routine cases.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
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    API RP 90:2006

    Annular Casing Pressure Management for


    Offshore Wells. - 1st edition.

    Classification: 75.180.10-70-20 Subsea equipment for petroleum and


    natural gas industries
    Responsible API
    TC/SC/WG:
    Project Leader:
    Members:
    Current status: Active
    Short description: This Recommended Practice is intended to serve as a guide
    for managing annular casing pressure in offshore wells.
    Although the prevention of annular casing pressure is very
    important, it is beyond the scope of this document.
    Prevention of annular casing pressure is planned to be
    addressed in API RP 65, Part 2. The remediation of wells
    because of sustained casing pressure is also beyond the
    scope of this document and is planned to be included in API
    RP 65, Part 3. This guide is meant to be used for offshore
    wells that exhibit annular casing pressure, including thermal
    casing pressure, sustained casing pressure (SCP) and
    operatorimposed 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 recognizes that annular casing
    pressure results in various levels of risk to the safety of
    personnel, property and the environment. The level of risk
    presented by annular casing pressure depends on many
    factors, including the design of the well and the source of the
    annular casing pressure. 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. Annular
    pressures that do not conform to the guidelines in this
    Recommended Practice may still have an acceptable level of
    risk, but they need to be evaluated on a case-by-case basis.
    This Recommended Practices establishes an acceptable level
    of risk for annular casing pressure using three parameters.
    First, annuli that exhibit annular casing pressure of 100 psig
    or less present little risk and should be monitored. Second,
    annular casing pressure that is greater than 100 psig and
    that has been diagnosed as sustained casing pressure (SCP)
    must bleed to zero psig. Third, a Maximum Allowable
    Wellhead Operating Pressure (MAWOP) is established for each
    non-structural casing annulus that exhibits annular casing
    pressure, including thermal casing pressure, sustained casing
    pressure or operator-imposed pressure. If the annular casing
    pressure does not meet the criteria established in this
    Recommended Practice, this does not mean that the risk
    presented by the annular pressure is unacceptable. Rather, it
    indicates that the annular casing pressure needs to be
    managed on a caseby- case basis that goes beyond the scope
    of this Recommended Practice. The case-by-case
    management of annular casing pressure may include the use
    of risk assessment techniques. Techniques that may be used
    for case-by-case risk assessment are discussed in Section 10
    of this Recommended Practice. In some cases, the annular
    casing pressure may need to be reduced or eliminated by well
    work. In other cases, the risk may be mitigated by other
    methods. Procedures for eliminating annular casing pressure
    or mitigating the risk are beyond the scope of this
    Recommended Practice.

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