Programmes & Initiatives
Asset Integrity & Risk Management (AIM) | Awarded on 02 Nov 2015
In oil & gas E&P, safe and reliable operations are of paramount importance to the industry. Asset integrity should never be compromised and risk management is critical to ensure lives and marine environment are safeguarded.
With enhanced oil recovery techniques, operators are stretching the existing reserves with assets that are reaching their design service life. These aged assets are often susceptible to failures due to mechanical degradations and harsh offshore environment.
Oil exploration has also inevitably moved into deep-sea as shallower oil wells become depleted. The offshore assets are installed in deeper water and are increasingly inaccessible. The associated cost of asset maintenance increases exponentially for deep-water regions resulting in the need for technological innovations in asset integrity & risk management. Integrity assessment and risk management solutions, anticipation of possible failures of systems and emergency response plans in the event of asset failures would be critical.
The offshore assets covered include offshore structures, subsea and down-hole equipment. The key research objectives are:
a) Identification of safety critical elements (SCEs)
The weakest structural components that are most susceptible to external forces, cyclic loadings and harsh environment known as safety critical elements should be identified.
b) Reduction of reliance on manual inspection
The inaccessible assets in deeper water and harsher environment drive the need for remote and autonomous inspection and maintenance which are increasingly reliant on sensor based technologies.
c) Low hardware overheads
Cost is one of the major considerations when sensors and wireless systems are installed. Such overheads include the cost of manufacturing the sensors and systems, power requirement as well installation compatibility with the existing assets.
d) High reliability systems under harsh environment
The increasingly harsh environment at deeper water with strong waves and currents as well as deeper wells with hostile chemicals and high pressure high temperature (HPHT) pose significant technical challenges. Sensors and systems must survive such environment with high reliability.
Programme Themes
- Software Development
- Hardware Development & Deployment
- New Asset Installation
- System Level Management
Projects awarded:
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Testing and Modelling on Corrosion and Erosion-Corrosion of Electric Submersible Pump (ESP) Stage Materials for Improved Performances in Deepwater Operations
Asset Integrity & Risk Management (AIM) | Awarded on 02 Nov 2015
Testing and Modelling on Corrosion and Erosion-Corrosion of Electric Submersible Pump (ESP) Stage Materials for Improved Performances in Deepwater OperationsThis proposed work has two main objectives. One is to study the corrosion and Erosion-corrosion (EC) behaviour of four different types of ESP stage materials (Nickel-Aluminium-Bronze, two types of Ni-resist cast irons and super duplex stainless steel) used for Electric Submersible Pump (ESP) by using different types of static and dynamic EC test instruments as well as post-test surface analysis techniques to better understand the corrosion and EC process in specific environment (such as deepwater with high pressure and high temperature). The EC processes will be studied by in-situ electrochemical techniques measuring the current density and corrosion potential response at different working conditions. The performance of tested materials will be assessed based on their overall wear behaviour (TWL, finish surface profile). The other objective is to propose a wear prediction model (with mathematical and electrochemical consideration) by using the results of the lab-level and functional test results. This work will benefit to predict working life of pump actually, and further reduce risk of fatal incident happen. It also gives constructive suggestion to design of next generation of ESP.
Involved Researcher(s): Du Hejun
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Customized Fibre Optic Sensing for Health Monitoring of FPSO
Asset Integrity & Risk Management (AIM) | Awarded on 02 Nov 2015
Customized Fibre Optic Sensing for Health Monitoring of FPSOThis project will examine feasibility of advanced fibre optic sensors (FOSs) and their integrated SHM system for monitoring hull of FPSO vessels. Brillouin frequency based sensors for distributed strain and Bragg grating based sensors for discrete strain measurement will be employed for comprehensive SHM. First, suitable sensors will be selected and customized for long term, large scale and continuous monitoring of hull-structure. A special and intrinsically safe package scheme for the FOSs will be proposed to increase the reliability, robustness and durability of the sensors in the harsh offshore environment. Data acquisition algorithm will be developed to acquire measured quantities according to needs and requirements. A procedure for FOSs installation suitable for FPSO application will be proposed. Data processing software will be developed to calculate moments, shear forces, etc., and also to estimate the fatigue life of the FPSO hull structure. A framework for assessing health condition using finite element modelling and the acquired data will be developed to facilitate effective IRM (Inspection, Repair and Maintenance) activities. Subsequently, a customized monitoring system suitable for FPSO applications by integrating the analysers, FOSs, data acquisition and processing algorithms will be developed with provision of an alarm system for the threshold values. For validation of the system, a model test in the laboratory will be conducted to testify the system and its components. Finally, a comprehensive monitoring plan (drawings and instrumentation) for an identified FPSO vessel will be proposed.
Involved Researcher(s): Yang Yaowen
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An integrated non-destructive coating inspection system for marine and offshore corrosion management
Asset Integrity & Risk Management (AIM) | Awarded on 02 Nov 2015
An integrated non-destructive coating inspection system for marine and offshore corrosion managementTo date, inspections of the coatings on marine and offshore structures are manually conducted by certified coating inspectors. The inspection process undergoes multiple survey cycles to assure the integrity of the structures. It involves massive manpower, planning and logistical support. The reliability of the assessment is mainly subject to the inspector’s experience. Furthermore, it would not provide quantitative results and corrosion details by visual inspection that may cause unnecessary maintenance cost and risk of failure. This project will develop an integrated non-destructive system and method for the protective coating inspections and provide effective and efficient inspection techniques for marine and offshore industries. This will be a quicker, more reliable and non-subjective inspection method. The techniques developed and the test data obtained from this project will help the industries to upgrade the inspection technology, improve the efficiency and reduce the cost.
Involved Researcher(s): Zhen Yongda