Estimation of Most Probable Maximum From Short-Duration or Undersampled Time-Series Data

ABSTRACT: The most probable maximum (MPM) is the extreme value statistic commonly used in the offshore industry. The extreme value of vessel motions, structural response, and environment are often expressed using the MPM. For a Gaussian process, the MPM is a function of the...

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Repair and Intervention of HPHT Flowlines

ABSTRACT: The objective of this paper is to report progress and recent findings related to the remediation of damaged high-pressure, high-temperature (HPHT) flowlines in deep water. The flowline repair technology currently being developed utilizes an R&D process of...

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Dynamic Risers for Floating Production System API Standard 2RD, 2nd Edition

ABSTRACT: Since the first edition of API RP 2RD, Recommended Practice for Design of Risers for Floating Production Systems (FPSs) and Tensioned-Leg Platforms (TLPs), was issued in June 1998, hydrocarbon exploration and production in deep water environments have increased...

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Exploring the Benefits of Wellhead Fatigue Monitoring

ABSTRACT: This paper examines the benefits achieved through fatigue monitoring of wellheads.  As an introduction, conservatisms in analytical predictions of wellhead fatigue life are cited.  In addition, considerations for increasing wellhead fatigue resistance are reviewed along...

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Assessing Uncertainties in Wellhead System Fatigue Life Prediction

ABSTRACT: This paper examines sources of uncertainty in present analysis methodologies used for the prediction of wellhead system fatigue lives.  For this study, the sources of uncertainty are classified as those parameters that affect the prediction of loads and stresses (the...

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Key Considerations in the Assessment of Pipeline Spans

ABSTRACT: Operators are often faced with the challenge of operating pipelines having unintended free spans. These free spans may be discovered during routine inspections or after significant environmental events. Managing the spans requires an engineering assessment of the current...

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Topsides Analysis for Damage Assessment and Repair

ABSTRACT: During Hurricane Ike, the drilling rig on the Mad Dog Spar was lost. When the rig was lost, the rig exited the platform to the west, damaging the west crane and the topsides primary steel. BP contracted Stress Engineering Services Inc. (SES) to contribute to the...

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Testing Results: Erosion Testing Confirms the Reliability of the Fluidic Diode Type Autonomous Inflow Control Device

ABSTRACT: Inflow Control Devices (ICDs) have become a common technology in horizontal completions for balancing oil influx and delaying water and gas breakthrough which allows total oil recovery to be maximized.  ICDs are commonly used in both sandstone and carbonate formations. ...

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Intentional Destructive Testing: A Means for Establishing Mechanical Integrity

ABSTRACT: Pipeline operators have at their disposal multiple resources for evaluating the integrity of identified features and anomalies. With advances in in-line inspection technology, the pipeline industry is being called upon to evaluate an ever-increasing number of features....

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