Sureflex JIP : The Latest Flexible Pipe Operational Experience and Integrity Management Guidance

2017 ◽  
Author(s):  
I. MacLeod ◽  
J. Picksley ◽  
K. Cruickshank
Keyword(s):  
Operational Experience ◽  
Flexible Pipe ◽  
Management Guidance ◽  
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.

Dynamic Flexible Riser Ancillary Equipment—North Sea Asset Integrity Management Experience and Lessons Learned

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Damir Tadjiev
Keyword(s):  
Case Studies ◽  
North Sea ◽  
Oil And Gas ◽  
Lessons Learned ◽  
Operational Experience ◽  
Flexible Riser ◽  
Remotely Operated Vehicle ◽  
Integrity Management ◽  
Flexible Risers ◽  
Ancillary Equipment

Abstract Dynamic flexible risers are complex engineered systems, which provide a connection between topside (normally floating) facilities and subsea pipeline infrastructure on offshore oilfields. Such systems require the use of ancillary equipment to ensure the riser’s correct configuration is maintained throughout the service life. Industry experience shows that the integrity management of riser ancillary equipment is not always comprehensive, and failure of such equipment is one of the causes of premature removal of flexible risers from service. This article presents some case studies from the operational experience of dynamic flexible risers by an operator in the UK North Sea covering a period of approximately 20 years. The case studies look at the anomalies identified in service by general visual inspection (GVI) using a remotely operated vehicle (ROV) and the lessons learned. Some of the anomalies, had they not been identified and addressed promptly, could have resulted in costly repairs, which demonstrates the importance of inspecting the ancillary equipment of flexible risers as a part of the riser integrity management strategy. The challenges associated with integrity management of ancillary equipment of dynamic flexible risers are also discussed. The case studies presented in this article demonstrate that ROV GVI is an effective method for identifying installation and in-service anomalies related to flexible riser ancillary equipment. The purpose of this article is to share lessons learned with the wider offshore oil and gas community. It is also believed that the information presented in this article may provide useful information to other users of dynamic flexible riser systems when developing and/or implementing their subsea pipelines integrity management programs.

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.

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.

Proposals for Integrity Management of Flexible Pipe

2013 ◽  
Author(s):  
Shuai Yuan ◽  
Gao Tang ◽  
Jie Bai ◽  
Mohd Fauzi Badaruddin
Keyword(s):  
Research Work ◽  
Management Program ◽  
The Other ◽  
Flexible Riser ◽  
Flexible Pipe ◽  
Whole Process ◽  
Practical Project ◽  
Flexible Pipes ◽  
High Pressure High Temperature ◽  
Integrity Management

The increasing use of flexible pipes in subsea with high pressure/high temperature brings about much more challenges, for example flexible riser fatigue, bird-caging and armour wire disorganization, development of flexible pipes with smooth bore and ones with anti-H2S layer, which demand operators to adopt an effective integrity management program including every phase of flexible pipe industry to avoid reduction of production. To date, much research work has been carried out on this topic. In this paper, the applicable inspection and monitoring measures are presented as proposals to develop the integrity management of flexible pipes. Meanwhile, this paper takes a practical project as an example to show the whole process of integrity management study clearly. The process can be used as reference for the other similar integrity management projects.

A Validation Strategy for Semi-Quantitative Risk Assessment in Pipeline Integrity Management

2004 ◽  
Author(s):  
Iain Colquhoun ◽  
Shahani Kariyawasam ◽  
Bill Gu ◽  
Evelyn Choong ◽  
Zupei Yang ◽  
...  
Keyword(s):  
Quantitative Methods ◽  
Quantitative Risk Assessment ◽  
Clear Understanding ◽  
Operational Experience ◽  
Risk Models ◽  
Use Of Data ◽  
Integrity Management ◽  
Regulatory Bodies ◽  
Integrity Assessments ◽  
Validation Strategy

Public concern and pressure from regulatory bodies are accelerating the need for pipeline operators to formalize and intensify their approach to integrity management. There is a growing acceptance of risk-based approaches. Semi-quantitative methods are attractive since they make the most efficient use of data available. However the risk models have to be validated and customized to specific pipeline systems. The strategy to do this has to be based in a clear understanding of the specific risk methodology used and industry requirements of the risk assessments it produces. The paper describes a validation strategy that can be used when only sparse data are available and which can act as a framework to incorporate additional data from integrity assessments and operational experience as these become available.

A Proposed Strategy for Risk Analysis of Flexible Pipe Systems

2010 ◽  
Author(s):  
Carlos Eduardo Costa Valle Longo ◽  
Guilherme de Salles Bessa ◽  
Marcelo Brack ◽  
Ota´vio Campos de Arau´jo ◽  
Wallace Bartholomeu e Silva
Keyword(s):  
Risk Analysis ◽  
Oil And Gas ◽  
Flexible Pipe ◽  
Pipe System ◽  
Previous Definition ◽  
Integrity Management ◽  
Historic Data ◽  
Potential Failure ◽  
Pipe Systems ◽  
Definition Of

Nowadays, due to the increasing importance of the HSE and also the operational availability requirements, one of the most important challenges for producing oil and gas at subsea environments is to have a mature methodology for quantifying risks. The main objective of this paper is to present a strategy for running risk analysis of flexible pipe systems. These systems are extensively used by Petrobras to flow different kinds of fluids in deep water offshore scenarios. The strategy presented herein includes the classification of threats and the potential failure mechanisms. Probabilistic figures are established depending on the historic data of the components of the flexible pipe system and also on the theoretical results obtained from available models for determination of the component remaining life. The strategy is based on the previous definition of inference rules and technical criteria for probability, consequence and risk assessments. The final goal is to have an adequate tool to help Operators to take decisions, to establish strategies and to improve flexible pipe integrity management.

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