Integrity Management And Life Extension Of Flexible Pipe

2007 ◽  
Author(s):  
Chris Saunders ◽  
Tim O'Sullivan
Keyword(s):  
Life Extension ◽  
Flexible Pipe ◽  
Integrity Management

Unbonded flexible pipe integrity management, reuse and life extension

2008 ◽  
Vol 48 (1) ◽  
pp. 319
Author(s):  
Adriana Botto ◽  
Céline Banti ◽  
Enda O'Sullivan
Keyword(s):  
Asset Management ◽  
Production Systems ◽  
Cost Effective ◽  
Later Life ◽  
Life Extension ◽  
Original Design ◽  
Flexible Pipe ◽  
Effective Manner ◽  
Manufacturing Testing ◽  
Integrity Management

Australia has a long tradition of innovation in the use of floating production systems in the past 20 years. The classical solution adopts unbonded flexible pipe, a key technology, to enable floating facilities to produce in relatively shallow waters. While unbonded flexible pipe is a reliable technology that has been in use for approximately 30 years, damage, and ultimately failure can occur during its early (i.e. during manufacturing/testing, installation and early operation) and later life. Accurate assessments of the historical records of flexible pipe usage have led to an increased understanding of the potential failure mechanisms. This enables mitigation of incidents by developing operating strategies and procedures to manage the flexible pipe in a knowledgeable and cost effective manner. This paper discusses the available techniques for the inspecting and monitoring requirements of flexible pipe, including consideration of the value offered by conventional general visual inspection (GVI) techniques. Examples of developed alternative technologies are discussed, as well as how these alternatives can reduce the requirement for GVI when supplemented with an integrated integrity management strategy. Furthermore, given the advances in understanding of complex flexible pipe inter-layer behaviour, this paper demonstrates that through proper asset management, flexible pipe technology service life can be extended beyond the original design value. Similarly, flexible pipe that had previously been considered damaged and requiring early replacement can be justified for extension to beyond the original design life. Consideration has also been given to the potential for the re-use of flexible pipes and the hazards which can arise from this activity including recovery, storage, testing and installation. The key stages required to safely manage this process have been outlined.

Managing Ageing Flexible Pipe Assets

2008 ◽  
Author(s):  
Adriana Botto ◽  
Enda O’Sullivan ◽  
Ce´line Banti
Keyword(s):  
Management Strategy ◽  
Assessment Tools ◽  
Life Extension ◽  
Flexible Pipe ◽  
Detailed Understanding ◽  
Operational Conditions ◽  
Design Life ◽  
Flexible Pipes ◽  
Integrity Management ◽  
Manufacturing History

The population of flexible pipes is increasing exponentially and by definition it is ageing. Over the coming years an increasing number of flexible pipes will reach the end of their design life, therefore prudent operators should focus on understanding the integrity status of their flexible pipes. Understanding and effectively managing the integrity of flexible pipes is necessary to prevent, predict, or detect the presence of any loss of integrity. A detailed understanding of the manufacturing history, operational conditions, any previous repairs and inspection or test history are all required to gain a full insight of the flexible pipe fitness and assess its suitability for continued operation and for any potential life extension beyond the initially intended service life. This paper presents guidelines for developing and implementing an integrity management strategy, which utilises the correct mix of inspection and assessment tools (degradation of internal pressure sheath, fatigue assessment, corrosion and annulus condition monitoring etc.) and operating procedures that will allow the operator to assess the opportunity for life extension of flexible pipes.

Platform Conductor Integrity Management in Life Extension of Ageing Offshore Wells

2021 ◽  
pp. 335-345
Author(s):  
Loganathan Radzakrishnan ◽  
Mohd Khairi Abu Husain ◽  
Roslina Mohammad ◽  
Astuty Amrin ◽  
Mohd Akmal
Keyword(s):  
Life Extension ◽  
Integrity Management

An Integrity Management Strategy Based on Flexible Risers Conceived to Be Self-Monitored

2007 ◽  
Author(s):  
Marcelo Brack ◽  
Sergio Roberto Alves Mendes ◽  
Rodrigo Cesar Lancelotti Campos ◽  
Luiz Antonio Lobianco e Souza
Keyword(s):  
Management Strategy ◽  
Relevant Information ◽  
Gas Production ◽  
Point Of View ◽  
Flexible Pipe ◽  
Self Monitoring ◽  
Basic Premise ◽  
Oil Companies ◽  
Integrity Management ◽  
Operation Phase

Many of the current practices applied for offshore production managing emphasize those aspects related to the efficiency of oil & gas production and exportation. Nowadays, due not only to the inherent technical challenges associated to deep-water applications but also to the increasing importance of the HSE aspects and requirements faced by the industry, a crescent demand to implement a philosophy which focalizes safety, reliability and integrity of their subsea flowing systems is taking place. The handling of monitored data in order to help the pipe operator to control fluid transportation throughout flexible pipes is an old practice performed by Petrobras and other oil companies in the world. However, the idea of acquiring a product which has been conceived, designed and manufactured with both intrinsic monitoring and expert systems is a recent idea. The tendency of the main flexible pipe manufactures is normally to face the problem from the traditional point of view: those systems are considered dissociated one from the other and as appendices to be installed, in the field, after system connection and start-up. Experience demonstrates that the installation of those systems during the operation phase has a number of limitations, restrictions, and associated problems. The main objective of this paper is to present an integrity management strategy based on the concept of the self-monitored flexible riser. Self-monitoring is understood as the own capacity of a product (flexible pipe and components with built-in devices) to acquire data about itself and make use of data from the internal and external environments, during its service life. Monitored data is then processed in order to generate relevant information for the fluid transportation business. The basic premise is to select, during product conception phase, some key-parameters to be further monitored, during the operation phase. The selection is determined by technical criteria depending on the potential failure mechanisms and modes related to the particularities of each different application.

Seal Tight Endfitting and Means to Identify Annulus Condition for Pre-Salt Flexibles in Brazil

2020 ◽  
Author(s):  
M. O. Brandão ◽  
F. Pires ◽  
C. Benirschke ◽  
E. Almeida ◽  
T. Iecker ◽  
...  
Keyword(s):  
Water Stress ◽  
Service Life ◽  
Failure Mode ◽  
Acceptance Test ◽  
Development Phase ◽  
Flexible Pipe ◽  
Pipe Section ◽  
Flexible Pipes ◽  
Integrity Management ◽  
High Concentrations

Abstract The development of Brazil Offshore fields using flexible pipes took the advantage of the possibility to move around lines, anticipate the production and postpone the decision of where exactly the development phase wells should be placed, making the drilling campaign easier, cheaper and faster. For the Pre-Salt fields, mainly in Santos Basin, it is observed high concentrations of H2S and CO2, two major impact contaminants for the metallic layers of the flexible pipe. A new failure mode by SCC is the most concerning one and have several approaches either focused on the installed fleet or focused in the next pipes to be delivered. SCC is a condition that induces cracks in the pipes metallic layers and need three elements to happen: water, stress and susceptible material. If one of these three elements is suppressed, the phenomena is not to happen. This paper will cover and present a design of a seal tight end fitting also with capabilities to be seal tested from the shop during the factory acceptance test and further means to identify if the flexible pipe section is flooded or dry visually, using ROV This information is key for the integrity management of the flexible pipes applied to pre salt fields to assure the most extent of the service life.

Integrity Management for Steel Catenary Risers With Design Life of 30 Years

2020 ◽  
Author(s):  
Hao Song ◽  
Chenteh Alan Yu ◽  
Yongming Cheng ◽  
Jing Hou
Keyword(s):  
Measurement Data ◽  
Management Program ◽  
Gas Production ◽  
Digital Model ◽  
Life Extension ◽  
Critical Element ◽  
Steel Catenary Riser ◽  
Integrity Assessment ◽  
Design Life ◽  
Integrity Management

Abstract The riser is a critical element in a subsea production system for transporting hydrocarbons from the seafloor to the surface. The track record of existing riser systems worldwide has shown that risers tend to be designed conservatively to accommodate dynamic loads, strength and fatigue requirements, and corrosion/erosion provision needs. Among all the riser types, the steel catenary riser (SCR) is the most installed riser configuration for deepwater oil and gas production worldwide in the last two decades. This is mainly because of their simple configuration and relatively low manufacturing and installation cost. As riser technology advances, SCRs are designed to tackle more challenging environments and longer service lives. For the riser life extension applications, regulatory bodies prefer riser operations to be managed through an integrity management program, demonstrating that a robust framework with detailed records on the conditions of the risers is in place. This paper studies an integrity management program for SCRs with a 30-year design life in a harsh environment. The planned riser integrity management program is based on successful industry practice and the newly published riser integrity management standard API RP 2RIM [4]. It starts with a review of the riser design basis and as-built data, continuing with key field data measurement and production fluid sampling. A digital model, continuously calibrated with the measured data, is established to assess the integrity of the riser system. Key physical quantities are selected to monitor the structural health of the SCRs, including vessel motion measurement, measurement of SCR top hang-off angles and tensions, and full water column current measurement. The relationship between the measurement data and the riser strength and fatigue performance is established. Details of the riser integrity assessment in a digital model utilizing the measurement data are presented. The implemented proposed riser integrity management program is expected to provide a more focused and efficient method with a higher level of confidence in operating the SCRs during the design life and potentially beyond.

Integrity Management and Life Extension for a CALM Buoy Oil Export Terminal

2016 ◽  
Author(s):  
Robert B. Gordon ◽  
Juan Carlos Ruiz-Rico ◽  
Michiel Peter Hein Brongers ◽  
Julian Gomez
Keyword(s):  
Failure Modes ◽  
State Of The Art ◽  
Life Extension ◽  
Remaining Life ◽  
Integrity Assessment ◽  
Design Life ◽  
Oil Export ◽  
Integrity Management ◽  
Inspection And Maintenance ◽  
Future Risk

This paper applies state-of-the-art integrity management and life extension methodologies to address degradation and failure modes specific to CALM buoy export terminals. The main objectives are to (1) classify the components of the export terminal according to their criticality, (2) establish risk-based inspection and maintenance plans to reduce or mitigate risk to acceptable levels and (3) assess remaining life. The method is applied to a CALM buoy operating off the coast of Colombia. This buoy serves as the oil export terminal for all crude oil transmitted by the Ocensa pipeline, which has a capacity of 560 kBPD or around 60% of total Colombia oil production. The buoy is nearing the end of its design life, and options for life extension have been investigated based on an integrity assessment of the current condition of the equipment. As part of the assessment, detailed plans for future Risk Based Inspections (RBI) and Mitigation, Intervention, and Repair (MIR) have been developed.

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