Case Study: Mardi Gras Deep Water Transportation System GIS and Underwater Inspections

2006 ◽  
Author(s):  
W. Leith McDonald ◽  
Gordon Gin ◽  
Rachel Boyle
Keyword(s):  
Deep Water ◽  
New Technology ◽  
Large Diameter ◽  
Transportation System ◽  
Pipeline System ◽  
Management Tools ◽  
Mardi Gras ◽  
Water Transportation ◽  
Water Pipeline

This paper presents a case study of BP’s Mardi Gras Gulf of Mexico deep water pipeline transportation system. The Mardi Gras Transportation System (MGTS), operated by BP Pipelines, N.A. has set the standard for large diameter, deepwater pipeline design, construction and maintenance. The pipelines range in size from NPS 16 to NPS 30 in water depths up to 7,300 ft. The paper showcases the ArcGIS and PODS relational database management tools and the process of how we implemented programs to track underwater facility features and their displacements caused by the 2005 hurricane season. We will describe the challenges, solutions and new technology used to monitor and maintain the integrity of this pipeline system, even when covered by 5000 feet or more of water. Submarine (ROV) inspection technology, digital video and GPS are the order of the day. We shall demonstrate how GIS can assist in managing and reporting the results of the inspections and setup a database for long term managment of the pipeline system.

New Technology Spiral SAW Pipes for Onshore and Offshore Oil and Gas Pipelines

2002 ◽  
Author(s):  
Josef Avagianos ◽  
Kostas Papamantellos
Keyword(s):  
Oil And Gas ◽  
Quality Management System ◽  
New Technology ◽  
Large Diameter ◽  
Production Capacity ◽  
Oil And Gas Industry ◽  
Step Method ◽  
Line Pipe ◽  
Water Transportation ◽  
Welded Pipe

The world production capacity on large-diameter welded pipe amounts to more than 12 million tons per year 20–25% are produced as spiral sub-arc welded (SAW) pipes, with the balance of 75–80% being longitudinal SAW pipes (from plates). For most spiral-weld producers, a sizeable portion of line pipe is for water transportation, rather than hydrocarbon. In the past, the relative structural weakness of spiral-welded pipe, due to larger welded area, limited the growth of its use in the oil industry. With the development of more advanced production technology, the acceptance of spiral-welded pipes in the oil and gas industry has increased significantly. In this paper, the principals of the spiral manufacturing technology from coil by the two-step-method are introduced and the innovations of Corinth Pipework’s production facility are outlined in detail, including the sophisticated NDT techniques and the Quality Management System.

Collapse Testing of Thermally Treated Line Pipe for Ultra-Deepwater Applications

2004 ◽  
Author(s):  
Duane DeGeer ◽  
Ulrich Marewski ◽  
Hans-Georg Hillenbrand ◽  
Bernadette Weber ◽  
Michael Crawford
Keyword(s):  
Thermal Treatment ◽  
Ring Expansion ◽  
Transportation System ◽  
Full Scale ◽  
Pipeline System ◽  
Outer Diameter ◽  
Test Program ◽  
Line Pipe ◽  
Mardi Gras ◽  
Thermally Treated

The Mardi Gras Transportation System is an ultra deepwater pipeline system that will support a number of prospects in the Gulf of Mexico, including the Holstein, Mad Dog, Atlantis and Thunder Horse field developments. To support the design of the deepest portions of the Mardi Gras Transportation System, a full-scale collapse test program was performed, and was aimed at measuring, quantifying and documenting the increase in pipe strength and collapse resistance as a result of the thermal induction heat treatment effect (thermal aging) from the pipe coating process. This paper presents a summary of the test program and the results of all testing performed on Europipe pipe samples. Two collapse tests and five pressure + bend tests were performed on as-received and thermally treated pipe specimens. These specimens were API Grade X65 line pipe, with an outer diameter of 28 inches (711 mm) and a wall thickness of 1.5 inches (38 mm). Geometric measurements, material coupon tests, and ring expansion tests were also performed. The coupon tests also included specimens taken from the original plate samples from which the full-scale pipes were manufactured, providing data on the effect of the UOE process on circumferential compressive strength. For the thermally treated pipe specimens, thermal treatment was performed by running the specimens through a pipe coating mill, simulating a fusion bond epoxy coating operation. This process involved preheating specimens to 240°C using induction heating. Subsequent material and full-scale tests on these specimens resulted in an increase of cross-sectional residual stresses by almost threefold, an increase of the circumferential compressive yield strength of the pipe by approximately 23% and an increase of pipe collapse strength by approximately 28%. The results of these tests are also compared to the collapse and collapse + bending equations found in the DNV (DNV OSF101) and API (API RP 1111) offshore pipeline codes, as well as the collapse equations found in API Bul 5C3 for downhole casing applications. In particular, it has been shown that the thermal treatment of the UOE pipe specimens can increase the DNV fabrication factor from 0.85 to 1.0.

scholarly journals Electrolytic corrosion of water pipeline system in the remote distance from stray currents—Case study

2016 ◽  
Vol 4 ◽  
pp. 116-124 ◽  
Author(s):  
Krzysztof Zakowski​ ◽  
Kazimierz Darowicki​ ◽  
Juliusz Orlikowski​ ◽  
Agata Jazdzewska​ ◽  
Stefan Krakowiak​ ◽  
...  
Keyword(s):  
Pipeline System ◽  
Electrolytic Corrosion ◽  
Water Pipeline

scholarly journals Detection and sizing of extended partial blockages in pipelines by means of a stochastic successive linear estimator

2013 ◽  
Vol 16 (2) ◽  
pp. 248-258 ◽  
Author(s):  
Christian Massari ◽  
Tian Chyi J. Yeh ◽  
Marco Ferrante ◽  
Bruno Brunone ◽  
Silvia Meniconi
Keyword(s):  
Water System ◽  
Diameter Distribution ◽  
Linear Estimator ◽  
System Management ◽  
Pipeline System ◽  
Theoretical Formulation ◽  
Current State ◽  
Water Pipeline ◽  
Numerical Case Study

Effective water system management depends upon knowledge of the current state of a water pipeline system network. For example, in many cases, partial blockages in a water pipeline system are a source of inefficiencies, and result in an increase of pumping costs. These anomalies must be detected and corrected as early as possible. In this study, an algorithm is developed for detecting blockages by means of pressure transient measurements and estimating the diameter distribution resulting from their formation. The algorithm is a stochastic successive linear estimator that provides statistically the best unbiased estimate of diameter distribution due to partial blockages and quantifies the uncertainty associated with these estimates. We first present the theoretical formulation of the algorithm and then test it with a numerical case study.

scholarly journals Protecting a Pumping Pipeline System from Low Pressure Transients by Using Air Pockets: A Case Study

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1786 ◽  
Author(s):  
Rafael Bernardo Carmona-Paredes ◽  
Oscar Pozos-Estrada ◽  
Libia Georgina Carmona-Paredes ◽  
Alejandro Sánchez-Huerta ◽  
Eduardo Antonio Rodal-Canales ◽  
...  
Keyword(s):  
Design Stage ◽  
Pipeline System ◽  
Pressure Waves ◽  
Transient Pressure ◽  
Transient Simulations ◽  
Transient Control ◽  
Water Pipeline ◽  
Potential Damage ◽  
Air Pockets

This paper presents a case study of an existing water pipeline with five pumping stations each equipped with five pumps. In order to study the pipeline behavior prior to putting the system into operation, several transient simulations for different scenarios were developed. Results revealed that the most serious situation occurred when a simultaneous failure of the five pumps occur at each station caused by power cut, producing negative pressure waves because the system for control of hydraulic transients of the pipeline was insufficient to suppress downsurge pressures, due to the moment of inertia of all the pumps being erroneously considered during the design stage. The necessity to start supplying water to the population led to attempt an unconventional form of protecting the line against low pressures. The solution was to operate two of the five pumps per plant, and permit air to enter through combination air valves located along the pipeline. Air entrained formed pockets that remained stationary at the air valves locations, acting as air cushions that absorbed the energy of transient pressure waves. Computational simulations were conducted considering that two pumps are in operation at each plant and suddenly these fail simultaneously caused by power failure. The program was verified by comparing the calculated results with those registered during field pressure measurements. It was noticed that the surge modelling results are in good agreement with the measured data; furthermore, these show the air pockets in combination with existing devices for transient control protect the system adequately, avoiding potential damage to the pipeline.

scholarly journals Full Flow High Pressure Hot Taps: The New Technology and Why It’s Indispensable to Industry

1998 ◽  
Author(s):  
John A. McElligott ◽  
Joe Delanty ◽  
Burke Delanty
Keyword(s):  
High Pressure ◽  
New Technology ◽  
Large Diameter ◽  
Cost Savings ◽  
Pipeline System ◽  
Gas Industry ◽  
The North ◽  
System Integrity ◽  
Pressure Pipeline ◽  
High Pressure Pipeline

The connection of a new pipeline lateral or loop to an existing high pressure pipeline system has always been fraught with high costs and the potential for major system impacts. Pipeline owners and operators have historically had to choose between a traditional cold connection with its high associated costs and a less expensive but more mysterious hot tap. Although the cost savings of a hot tap have always been considerable, they were not always sufficient to justify the risk of complications during the branch weld or hot tap or during the subsequent operation of the system. Despite their extraordinary costs and throughput impacts, the perceived certainties of cold connections were often sufficient to justify their regular use. The recent Kyoto Protocol on Climate Change has resulted in new commitments by the world’s governments to reduce greenhouse gas emissions. For the North American gas industry, these initiatives could result in voluntary compliance objectives, incentive based programs or legislated reforms — any of which will have significant impacts on current practices. TransCanada PipeLines Limited (TransCanada) has successfully managed the risk/reward conundrum and completed more than 700 large diameter (NPS 12 to NPS 30) horizontal high pressure hot taps without incident since 1960. TCPL’s research and development work has enabled it to refine its procedures to the point where it can now complete branch welding and hot tapping work with minimal effects on throughput, negligible emissions and no system integrity impacts. For TransCanada, the direct advantages of a hot tap over a cold connection have resulted in the avoidance of gross revenue losses of $1 million or more per hot tap, no environmental emissions, seamless service and no impacts whatsoever to shippers. TransCanada PipeLines Services Ltd. (TPSL) has further streamlined the supporting field procedures and now provides a complete turn key service to industry.

Blockchain in Supply Chain: Case Study of Lottemart Ciputat

2019 ◽  
Vol 5 (1) ◽  
pp. 38-49 ◽  
Author(s):  
B. K. Handoyo ◽  
M. R. Mashudi ◽  
H. P. Ipung
Keyword(s):  
Decision Making ◽  
Supply Chain ◽  
Supply Chain Management ◽  
Information Asymmetry ◽  
New Technology ◽  
Business Case ◽  
Analysis Method ◽  
Chain Management ◽  
Production Processes

Current supply chain methods are having difficulties in resolving problems arising from the lack of trust in supply chains. The root reason lies in two challenges brought to the traditional mechanism: self-interests of supply chain members and information asymmetry in production processes. Blockchain is a promising technology to address these problems. The key objective of this paper is to present qualitative analysis for blockchain in supply chain as the decision-making framework to implement this new technology. The analysis method used Val IT business case framework, validated by the expert judgements. The further study needs to be elaborated by either the existing organization that use blockchain or assessment by the organization that will use blockchain to improve their supply chain management.

Thinning in mature eastern white pine: 43-year case study

2002 ◽  
Vol 78 (4) ◽  
pp. 539-549 ◽  
Author(s):  
Paul D Anderson ◽  
John C Zasada ◽  
Glen W Erickson ◽  
Zigmond A Zasada
Keyword(s):  
Genetic Diversity ◽  
Dna Analysis ◽  
Large Diameter ◽  
White Pine ◽  
Thinning Intensity ◽  
Pine Regeneration ◽  
Volume Production ◽  
Pine Stands ◽  
Over Time

A white pine (Pinus strobus L.) stand at the western margin of the species range, approximately 125 years of age at present, was thinned in 1953 from 33.5 m2 ha-1 to target residual basal areas of 18.4, 23.0, 27.5, and 32.1 m2 ha-1 . Repeated measurement over the following 43-years indicated that the greatest total volume production and the greatest number of large diameter trees occurred in the unit of highest residual density. Over time, the distribution of stems was predominantly random although mortality between 1979 and 1996 resulted in a tendency for clumping in the 23.0 and 27.5 m2 ha-1 treatments. DNA analysis indicated that thinning intensity had little effect on the genetic diversity of residual white pine. This study suggests that mature white pine stands in northern Minnesota may be managed at relatively high densities without loss of productivity. However, regardless of overstory density, there was little or no white pine regeneration occurring in this stand. Key words: thinning, growth, genetic diversity, molecular markers, spatial pattern, regeneration

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