Maintenance Regime Minimum (MRM): State of the Art — Maintaining Offshore Platforms Before Decommissioning

2017 ◽  
Author(s):  
Kundan Kumar ◽  
R. M. Chandima Ratnayake
Keyword(s):  
Oil And Gas ◽  
State Of The Art ◽  
Offshore Platforms ◽  
Op Amp ◽  
Operational Life ◽  
Mandatory Requirement ◽  
Pressure Chemical ◽  
Optimal Maintenance ◽  
Offshore Oil And Gas ◽  
Service State

It is a mandatory requirement to maintain offshore oil and gas (O&G) production and process platforms during the engineering down period (i.e. the period from the end of the design/operational life to decommissioning). Decommissioning of the offshore production and process (OP&PPs) involves cessation of operations, withdrawal of the facility from service, transformation into an out-of-service state, deactivation and removal. There are several energy sources (i.e. pressure, chemical substances, electrical and mechanical instrumentation, telecom equipment, navigation radar system, gravity, heat/cold, biological substances, etc.), which need to be maintained and/or deactivated until the platform is decommissioned. This manuscript first maps the current state of the art in relation to the maintenance of OP&PSs before decommissioning. Then, the ‘Maintenance Regime Minimum’ (MRM) approach is proposed to perform comparative analysis in order to identify and select the optimal maintenance hours within the decommissioning strategy, based on cost (e.g. man hours required), safety, and environmental challenges. The manuscript also illustrates how the MRM approach focuses on potential decommissioning alternatives in relation to the optimization of maintenance hours and challenges involved in different tags throughout the functional hierarchy. The results of a case study on two topside systems (i.e. in relation to two alternatives) are also presented.

Center of Excellence: Leveraging Data to Reduce Incidents on Offshore Oil and Gas Assets

2021 ◽  
Author(s):  
Le Ronan Bayon ◽  
Leah Boyd
Keyword(s):  
Oil And Gas ◽  
Daily Routine ◽  
Offshore Platforms ◽  
Frontline Employees ◽  
Information Campaigns ◽  
Engineering Controls ◽  
Center Of Excellence ◽  
Novel Approach ◽  
Offshore Oil And Gas ◽  
Offshore Oil

Abstract This paper presents a novel approach to finding solutions to unsafe work practices in oil and gas environments—from manufacturing facilities to offshore platforms. The ‘Center of Excellence’ approach is a stepwise process for classifying safety events and harnessing data to reduce incidents during offshore oil and gas E&P activities. The approach includes identifying focus topics related to unsafe practices, forming cross-functional teams with significant field or impacted personnel participation, developing and implementing measures, utilizing the hierarchy of controls to mitigate the issue, and raising company-wide awareness through training and targeted information campaigns. The Center of Excellence process gives top priority to those activities in order to reduce the highest severity and most frequent safety incidents. The teams are then able to more clearly identify feasible solutions, including engineering controls, training, campaigns, and procedures to contain the hazards. The active engagement and involvement of frontline employees who either work in the field or on the factory floor is critical to understand the daily hazards of their work activities and the success of the Center of Excellence approach. With these employees acting as a champion of the developed solution, other workers are more likely to accept and adopt it in their daily routine. This paper reviews practical examples of how the Center of Excellence approach has led to safer practices in the workplace. Examples include improved safety measures for using tightening tools, which led to more than 50% reduction in hand injuries and other safety incidents. A recent example of using the approach to develop safer practices during manual handling of loads (MHL) is also presented. The examples highlight the benefits of bringing multifaceted teams and multiple industry-accepted safety concepts together to resolve common work safety challenges, which can serve as a blueprint for oil and gas companies to reduce incidents across their enterprise.

Technical and Economic Considerations in Developing Offshore Oil and Gas Prospects Using Floating Production Systems

1986 ◽  
Vol 23 (03) ◽  
pp. 253-270
Author(s):  
W. J. Drawe ◽  
Anil Raj ◽  
P. J. Rawstron
Keyword(s):  
Decision Tree ◽  
Oil And Gas ◽  
Production Systems ◽  
State Of The Art ◽  
Related System ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Economic Considerations

This paper discusses the use of floating production systems (FPS) in developing offshore fields and includes consideration of related system and subsystem options. The system options are discussed from their relative technical and economic merits. Proven conventional and state-of-the-art technology as well as technical limitations are included. A decision tree matrix has been developed for use in the early planning stages to assist in determining preferred baseline options for selecting an approach. Systems from the mud-line upwards to the floating hull, and on-board systems, are included.

Model Simplification for Offshore Platforms Using Model Refinement Scheme

2013 ◽  
Vol 284-287 ◽  
pp. 1436-1440 ◽  
Author(s):  
Min Zhang ◽  
Shu Qing Wang ◽  
Jia Li Fu ◽  
Xiao Long Xu
Keyword(s):  
Experimental Model ◽  
Degrees Of Freedom ◽  
Oil And Gas ◽  
Model Updating ◽  
Experimental Models ◽  
Offshore Platforms ◽  
Model Refinement ◽  
Jacket Platform ◽  
Cross Model ◽  
Offshore Oil And Gas

Offshore jacket platforms have been widely used in offshore oil and gas exploitation under hostile ocean environments. Finite element models of such structures need to have many degrees of freedom (DOFs) to represent the geometrical detail of complex structures, which leads to more computing power when performing the analysis and what’s more, the incompatibility in the number of degrees of freedom to the experimental models. Therefore, there is a need to simplify the analytical model by reducing the DOFs and in the process, making the essential eigen-properties agree with those of the experimental model is desired. In this paper, a scaled physical experimental model of an offshore jacket platform is simplified using the recently developed model refinement scheme. Mathematically, the procedure to implement the model refinement technique is an application of cross-model cross-mode (CMCM) method for model updating. The master degrees of freedom are chosen according to the placement of accelerometers in the experiment. Upon the completion of the refinement, the improved reduced jacket platform model matches the dynamic characteristics of the experimental model quite well.

Joining Composite Pipes Using Hybrid Heat-Activated Coupling and Adhesive Bonding

2001 ◽  
Author(s):  
Guoqiang Li ◽  
Su-Seng Pang ◽  
Randy J. Jones ◽  
Jack E. Helms ◽  
Eyassu Woldesenbet
Keyword(s):  
Internal Pressure ◽  
Adhesive Bonding ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Offshore Platforms ◽  
Gas Industry ◽  
Critical Technology ◽  
Offshore Oil And Gas ◽  
Composite Pipes ◽  
Offshore Oil

Abstract Deepwater activities are the future of the Offshore Oil and Gas Industry. Huge reserves have been located in the Gulf of Mexico as well as off the Coast of West Africa and Brazil. The development of floating production platforms and vessels offers challenges to the facilities engineer who must consider new materials to meet stringent topsides weight limitations. A critical technology for facilities piping in offshore platforms is joining technique. This paper discusses the development of a hybrid joining approach by using heat-activated coupling and adhesive bonding. The technique procedure is presented via specimen fabrication. A total of eleven coupled specimens are prepared and evaluated using standardized internal pressure tests. The feasibility of this new joining technique in offshore piping is discussed based on the internal pressure test results.

Damage Detection in Offshore Platforms Using Vibration Information

1986 ◽  
Vol 108 (2) ◽  
pp. 97-106 ◽  
Author(s):  
F. Shahrivar ◽  
J. G. Bouwkamp
Keyword(s):  
Damage Detection ◽  
Oil And Gas ◽  
Gas Production ◽  
Offshore Platforms ◽  
Oil And Gas Production ◽  
Mass Eccentricity ◽  
Detection Capabilities ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Mass Increase

Damage detection based on changes in dynamic characteristics is considered for eight-legged k-braced steel offshore oil and gas production towers. Both experimental and analytical results are presented to improve damage detection capabilities. A 1/50th scale plastic model representing the structural system of a typical full-scale tower in 218 ft (66m) of water is used for the studies. Effects of severance of diagonal bracing members on selected vibration frequencies and mode shape parameters measurable at the deck are investigated. The effects of changes in deck mass, increase in jacket mass, and deck mass eccentricity on the selected parameters are also investigated and are shown to be different from the effects of damage.

scholarly journals Old Oil Rigs Never Die

2019 ◽  
Vol 141 (11) ◽  
pp. 36-41
Author(s):  
Lina Zeldovich
Keyword(s):  
Oil And Gas ◽  
State Of The Art ◽  
Oil Wells ◽  
Engineering Project ◽  
The World ◽  
Offshore Oil And Gas ◽  
Pumping Equipment ◽  
Offshore Oil

Abstract Offshore oil and gas platforms are among the largest structures humanity has ever built. There are more than 7,500 of them towering up from seas all over the world, according to some recent estimates. As wells dry up and pumping equipment wears down, those structures are likely to become obsolete in the upcoming decades. Those oil wells will have be decommissioned and capped off and the platforms taken down. But taking down an offshore oil platform and the tower that supports it is no simple assignment. It is a massive engineering project that requires state-of-the-art equipment.

Optimization of vibration analysis inspection intervals for an offshore oil and gas water injection pumping system

2005 ◽  
Vol 219 (3) ◽  
pp. 251-259 ◽  
Author(s):  
N Arthur
Keyword(s):  
Vibration Analysis ◽  
Oil And Gas ◽  
Water Injection ◽  
Condition Based Maintenance ◽  
Pumping System ◽  
Qualitative Approaches ◽  
Optimal Maintenance ◽  
Physical Assets ◽  
Offshore Oil And Gas ◽  
Offshore Oil

Maintenance is often considered a ‘necessary evil’ rather than a means of delivering value to owners and operators of physical assets, and means that maintenance seldom has the requisite importance and focus required. Optimal maintenance allows the delivery of maximum productivity and profit at minimum costs, and there are two ways of determining a nominally optimal maintenance solution: qualitative and quantitative optimization. Condition-based maintenance has long been recognized as an effective strategy for maintaining critical plant, and involves the regular inspection of equipment condition to determine the need for remedial maintenance activities. The periodicity at which inspections takes place is often ill-determined and appropriate quantitative analysis seldom takes place. Such an approach often leads to excessive direct costs and can result in significant indirect costs if asset failure is considered. This paper presents a solution to this problem; the quantitative delay-time maintenance model allows the determination of the optimum condition-based maintenance inspection interval. This approach is illustrated by the application of the model to the optimization of vibration analysis intervals for an offshore oil and gas water injection pumping system and demonstrates advantages when compared with conventional qualitative approaches.

scholarly journals Study on fire risk assessment of offshore platforms

2021 ◽  
Vol 261 ◽  
pp. 03034
Author(s):  
Tao Chen ◽  
Lin Wang
Keyword(s):  
Risk Assessment ◽  
Oil And Gas ◽  
High Efficiency ◽  
Fire Risk ◽  
Offshore Platform ◽  
Offshore Platforms ◽  
Effective Prevention ◽  
Fire Risk Assessment ◽  
Oil And Gas Resources ◽  
Offshore Oil And Gas

As a modern infrastructure for offshore oil and gas resources development, offshore platforms have many advantages, such as high efficiency, concentration, flexibility, and repeatability. At the same time, its upper module environment is bad, the equipment is numerous, has the very big risk. In case of fire and explosion and other accidents, it is difficult to get timely rescue. Therefore, fire risk assessment for offshore platform is very necessary. This paper focuses on the research results in the field of fire risk assessment of offshore platforms at home and abroad, points out the shortcomings of current research, and provides reference for risk reduction and effective prevention of offshore platform operations.

scholarly journals Project portfolio prioritization strategy to extend the service life of offshore platforms – a Prométhée V approach

2019 ◽  
Vol 10 (5) ◽  
pp. 1421
Author(s):  
Rodrigo Toneto De Melo ◽  
Luiz Flavio Autran Monteiro Gomes ◽  
Fernando Filardi
Keyword(s):  
Decision Aid ◽  
Oil And Gas ◽  
Project Portfolio ◽  
Offshore Platforms ◽  
Plateau Phase ◽  
Important Improvement ◽  
Offshore Oil And Gas ◽  
The One ◽  
Offshore Oil ◽  
Prioritization Strategy

This study puts forward the implementation of Multi-Criteria Decision Aid, through the PROMÉTHÉE V method, to support a decision on prioritizing a modification project portfolio on offshore oil and gas platforms. The chosen method supports, in a structured manner, the prioritization of a project portfolio which is necessary to leverage the oil production in offshore facilities, especially when they have already surpassed the plateau phase and presents production decline. Although the most relevant issues for investors are related to return on investments and the risks involved, the study suggests that other criteria are considered in specific settings. The research used data from 12 main projects of an oil and gas company and the criteria evaluations were made based on documents retrieved from the organization's database. This implementation represents a very important improvement for a well-known problem, in which the result is found based on criteria and their respective weights selected through a consensus. The results reinforce that any organization, with a constraint similar to the one presented in this study, may obtain relevant gains with the use of methods that clearly reflect the decision process and its criteria, assisting the decision maker's job significantly.

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