CCS向け老朽化海洋プラットフォーム評価の枠組み

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides a case study of applying SIM to aging platforms for CCS, offering insights into life-extension assessment methodologies.

🏢実務担当者:Offers a structured framework for evaluating existing offshore assets for CCUS repurposing, useful for integrity and project teams.

🏛政策担当者:Highlights the technical considerations for repurposing aging infrastructure, relevant for regulatory frameworks supporting CCS deployment.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 225805, “Evaluating Aging Offshore Platforms for Next CCS: Path to Sustainable Decommissioning,” by Nur D.B. Alias, Bak S. Wong, and Ahmad R.A. Rahman, Petronas, et al. The paper has not been peer-reviewed. A series of structural-integrity evaluations were conducted to assess an aging offshore complex for the largest carbon capture, utilization, and storage (CCUS) project in southeast Asia. These evaluations were combined with a sacrificial anode requalification study to check corrosion status as the platform nears the end of its design life. The complete paper uses the structural-integrity-management (SIM) framework to evaluate the current structural integrity of the chosen platforms, highlighting their potential and limitations for CCUS purposes based on in-service assessments. SIM is the systematic, ongoing process applied throughout a structure’s life cycle to ensure that it remains fit for its intended purpose by managing risks associated with structural failure. For life extension, the SIM process provides the framework for demonstrating continued safety and reliability beyond the original design envelope. Industry standards typically structure the SIM process into the following distinct, yet interconnected, phases: 1. Data Management: This initial phase involves the systematic collection, organization, and review of all pertinent information related to the platform. 2. Evaluation: This phase involves the engineering assessment of the collected data to understand the platform’s current structural condition, identify potential or existing degradation mechanisms (corrosion, fatigue), quantify risks, and compare the platform’s status with defined performance criteria. 3. Strategy Development: Based on the evaluation phase, a forward-looking strategy is developed to manage the platform’s integrity over the desired period (a 25- to 30-year extension). 4. Program Implementation: This phase involves executing the defined strategy through planned activities such as inspections, structural health monitoring, preventative and corrective maintenance, and implementation of necessary repairs or upgrades. SIM is not a static, one-time assessment performed at the beginning of the life-extension period. Rather, it functions as a dynamic, iterative loop. For a 30-year extension, justifying existing integrity is insufficient. The initial justification must present a credible, long-term management plan that anticipates future degradation and incorporates mechanisms for ongoing verification and adaptation. A thorough understanding of the platform’s current condition and the cumulative effect of past degradation is the essential starting point for any life-extension assessment. This requires meticulous data gathering and a systematic evaluation of potential failure mechanisms.

• semanticscholar https://doi.org/10.2118/0926-0019-jptfirst seen 2026-09-08 05:16:33 · last seen 2026-09-22 05:05:38