New Generation of Heavy Wall Thicknesses Line Pipes for HPHT and Ultra-Deep Water Applications

2018 ◽  
Author(s):  
Stefano Crippa ◽  
Lorenzo Motta ◽  
Alessandro Paggi ◽  
Emanuele Paravicini Bagliani ◽  
Alessandro Elitropi ◽  
...  
Keyword(s):  
Wall Thickness ◽  
Deep Water ◽  
Oil And Gas ◽  
High Pressures ◽  
Oil And Gas Industry ◽  
Rolling Process ◽  
Corrosion Properties ◽  
Line Pipe ◽  
Gas Industry ◽  
New Generation

Oil and Gas industry in the last decades has increased the use and need of heavy wall thickness line pipes, in particular for onshore / offshore high pressures and high temperatures (HP/HT) and offshore deep water / ultra-deep water applications. The paper presents the results achieved by Tenaris on seamless line pipes in grades X65/X70, according to API 5L / ISO 3183, with wall thickness in a range from 40 to 60 mm and diameter between 6 5/8” and 16”, produced by hot rolling process followed by quenching and tempering. Such line pipes are able to withstand very demanding conditions, like sour environment, very high pressure and wide temperature range. In this publication, the main outcomes of laboratory testing activities on the mentioned materials will be presented as part of heavy wall line pipe qualification. For this purpose, a special testing program, including mechanical and corrosion tests, has been executed. Material demonstrated an excellent behaviour, exhibiting both mechanical, toughness and stress corrosion properties suitable for the envisaged harsh applications.

Tubarão Martelo Field Riser System: Shallow Water Challenging

2015 ◽  
Author(s):  
Elton J. B. Ribeiro ◽  
Zhimin Tan ◽  
Yucheng Hou ◽  
Yanqiu Zhang ◽  
Andre Iwane
Keyword(s):  
Shallow Water ◽  
Deep Water ◽  
Oil And Gas ◽  
Vertical Motion ◽  
Oil And Gas Industry ◽  
System Configuration ◽  
Wave Load ◽  
Gas Industry ◽  
Campos Basin ◽  
Water Problem

Currently the oil and gas industry is focusing on challenging deep water projects, particularly in Campos Basin located coast off Brazil. However, there are a lot of prolific reservoirs located in shallow water, which need to be developed and they are located in area very far from the coast, where there aren’t pipelines facilities to export oil production, in this case is necessary to use a floating production unit able to storage produced oil, such as a FPSO. So, the riser system configuration should be able to absorb FPSO’s dynamic response due to wave load and avoid damage at touch down zone, in this case is recommended to use compliant riser configuration, such as Lazy Wave, Tethered Wave or Lazy S. In addition to, the proposed FPSO for Tubarão Martelo development is a type VLCC (Very Large Crude Carrier) using external turret moored system, which cause large vertical motion at riser connection and it presents large static offset. Also are expected to install 26 risers and umbilicals hanging off on the turret, this large number of risers and umbilicals has driven the main concerns to clashing and clearance requirement since Lazy-S configuration was adopted. In this paper, some numerical model details and recommendations will be presented, which became a feasible challenging risers system in shallow water. For instance, to solve clashing problem it is strictly recommended for modeling MWA (Mid Water Arch) gutter and bend stiffener at top I-tube interface, this recommendation doesn’t matter in deep water, but for shallow water problem is very important. Also is important to use ballast modules in order to solve clashing problems.

Development of X90 and X100 Steel Grades for Seamless Linepipe Products

2014 ◽  
Author(s):  
Diana Toma ◽  
Silke Harksen ◽  
Dorothee Niklasch ◽  
Denise Mahn ◽  
Ashraf Koka
Keyword(s):  
Wall Thickness ◽  
Deep Water ◽  
High Strength ◽  
Oil And Gas Industry ◽  
Pipe Material ◽  
Line Pipe ◽  
Materials Development ◽  
Additional Tool ◽  
Technical Requirements ◽  
Steel Grades

The general trend in oil and gas industry gives a clear direction towards the need for high strength grades up to X100. The exploration in extreme regions and under severe conditions, e.g. in ultra deep water regions also considering High Temperature/High Pressure Fields or arctic areas, becomes more and more important with respect to the still growing demand of the world for natural resources. Further, the application of high strength materials enables the possibility of structure weight reduction which benefits to materials and cost reduction and increase of efficiency in the pipe line installation process. To address these topics, the development of such high strength steel grades with optimum combination of high tensile properties, excellent toughness properties and sour service resistivity for seamless quenched and tempered pipes are in the focus of the materials development and improvement of Vallourec. This paper will present the efforts put into the materials development for line pipe applications up to grade X100 for seamless pipes manufactured by Pilger Mill. The steel concept developed by Vallourec over the last years [1,2] was modified and adapted according to the technical requirements of the Pilger rolling process. Pipes with OD≥20″ and wall thickness up to 30 mm were rolled and subsequent quenched and tempered. The supportive application of thermodynamic and kinetic simulation techniques as additional tool for the material development was used. Results of mechanical characterization by tensile and toughness testing, as well as microstructure examination by light-optical microscopy will be shown. Advanced investigation techniques as scanning electron microcopy and electron backscatter diffraction are applied to characterize the pipe material up to the crystallographic level. The presented results will demonstrate not only the effect of a well-balanced alloying concept appointing micro-alloying, but also the high sophisticated and precise thermal treatment of these pipe products. The presented alloying concept enables the production grade X90 to X100 with wall thickness up to 30 mm and is further extending the product portfolio of Vallourec for riser systems for deepwater and ultra-deep water application [1, 3, 4].

Tracerco Discovery: the world's first subsea computed tomography (CT) scanner for non-intrusive pipeline inspection

2014 ◽  
Vol 54 (2) ◽  
pp. 545
Author(s):  
Lee Robins
Keyword(s):  
High Resolution ◽  
Wall Thickness ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Ct Scanner ◽  
Remotely Operated Vehicle ◽  
Gas Industry ◽  
Pipeline Inspection ◽  
Non Invasive ◽  
Wall Loss

Tracerco Discovery is the world’s first subsea CT scanner, providing high-resolution wall integrity data plus detection of hydrates and other deposits for flow assurance purposes. It is deployed as a remotely operated vehicle (ROV) and the inspection is carried out from the outside of the pipeline. It is the only non-invasive technology capable of inspecting unpiggable coated pipelines and there is no need to remove and replace the pipe’s protective coating. Unpiggable pipelines, especially coated ones, have proven extremely difficult (and in most cases impossible) to inspect for integrity and wall loss issues. An externally deployed tool to do this is needed by the global pipeline industry. Gas hydrates and other pipeline deposits pose a large challenge for the oil and gas industry as they can form restrictions that can result in costly shutdowns and serious safety threats. It is, therefore, important to be able to locate such restrictions subsea with high accuracy to allow safe and efficient remediation operations. Discovery benefits: Production can continue and normal operations are not affected. A high-resolution tomographic image of wall thickness and pipe contents at each scanning location is provided to 2 mm resolution. Coating does not need to be removed. Suitable for gas, liquid, or multiphase flow. Suitable for rigid and flexible lines. Pipe-in-Pipe lines and pipe-bundles can be inspected to measure the wall thickness of outer and inner pipes. The presentation of this extended abstract covers the background of the development work, gives a description of the technology, and shows recent results.

scholarly journals Completion Fluid dengan Nitrat - Formate Base

2020 ◽  
Vol 1 (2) ◽  
pp. 41-46
Author(s):  
Mohammad Mahlil Nasution
Keyword(s):  
Oil And Gas ◽  
High Pressures ◽  
Solid Material ◽  
Oil And Gas Industry ◽  
Basic Material ◽  
Formation Damage ◽  
Gas Industry ◽  
Well Completion ◽  
Soluble Solid ◽  
The Impact

Completion Fluid is a Liquid of Salt Solution (Brine), used during the Well Completion, also to Killing Well job, when doing Work Over Wells and Well Services Jobs and Fishing Job  and also functions as Packer Fluid. Completion Fluid is generally used in Reservoir formations that are sensitive to Shales, Clay or other minerals. The purpose of using Completion Fluid is to avoid or reduce formation demage. The formation damage causes reservoir formation that has hydrocarbon potential, after being drilled and produced the flow of oil becomes small and even difficult to flow. Formation damage  need to be given very serious attention so that the Oil production in our country can increase significantly because the impact is that production does not increase significantly, Cost of production is high. If an effort to minimize damage is done optimally, it is expected that production will increase significantly so that the production target from year to year can be achieved. This invention relates to the method of making Completion Fluid for Drilling, Work Over and Well Services as Drilling activities in the Oil and Gas industry, using fresh water and solids as the material, more specifically is a solid which is a soluble solid as a base formula for making the fluid. In this case, the basic material of the solid material used for completion fluid is Nitrate and Alkali Formate. This completion fluid can reach SG (Specific Gravity) up to 2.0. This completion fluid has very low corrosivity (Corrosivity), which is stable at very high temperatures and high pressures.

Research into the Dependency of the Flame-Retardant Textile Safety Index on the Fibre Content

10.12737/2547 ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 40-47
Author(s):  
Анна Савинова ◽  
Anna Savinova ◽  
Юрий Тюменев ◽  
Yuriy Tyumenev ◽  
Татьяна Чернышова ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Analysis Data ◽  
Fibre Content ◽  
Water Repellent ◽  
Safety Index ◽  
Gas Industry ◽  
New Generation ◽  
The Impact

Employment in the oil and gas industry, due to the specifics of work, is fraught with explosion and fire. One of the ways to protect the employees is the use of new generation special-purpose flame-retardant wear. The article at hand provides the results of research into the dependency of flame-retardant textiles safety index on the fibre content. The objective of the research was to identify the impact of the fibre content of oil-and-water-repellent-impregnated flame-retardant textiles on the tailored properties. The task of the researchers was to conduct a comparative analysis of the objects of research against various indices, and with the analysis data in mind determine the consumer product ID preferences in the market of special-purpose high-temperature/fire/oil-refined-product-protective wear.

Research on Metal Forming in Pipe Ends Upsetting Process

2017 ◽  
Vol 265 ◽  
pp. 1076-1080 ◽  
Author(s):  
M.V. Erpalov ◽  
Aleksandr Aleksandrovich Bogatov
Keyword(s):  
Wall Thickness ◽  
Oil And Gas ◽  
Pipe Wall ◽  
Oil And Gas Industry ◽  
Full Scale ◽  
Gas Industry ◽  
Pipe Wall Thickness ◽  
Full Scale Experiment ◽  
Scale Experiment ◽  
Defect Nucleation

Oil country tubular goods (OCTG) are widely used in oil and gas industry. In order to increase joint efficiency of the oil country tubular goods, the process for upsetting their ends is applied. However, the weakness of this upsetting technology is a frequent defect creation on the inner surface of the final product. These imperfections are surface breakings that reduce the effective pipe wall thickness; they are detected close to the upset ends of the pipe. Computer simulation and full-scale experiment were used to study this defect nucleation. According to this research, the occurrence of defects is correlated with average pipe wall thickness, non-uniform wall thickness of the blank, heating mode and friction conditions. The results of full-scale experiment confirm the main conclusions made in the course of the finite element simulation. The research results define the interdependence of actual size of the blank and the operating tool calibration.

A Structured Approach to Supplier Performance Measurement

2000 ◽  
Author(s):  
K. E. W. Coulson ◽  
T. C. Slimmon ◽  
M. A. Murray
Keyword(s):  
Performance Measurement ◽  
Oil And Gas ◽  
Cost Effective ◽  
Oil And Gas Industry ◽  
Line Pipe ◽  
Gas Industry ◽  
Pressure Line ◽  
Delivery Times ◽  
Supplier Performance ◽  
Structured Approach

The start of the new millennium will see companies in the oil and gas industry faced with a dual challenge. Not only will they have to undertake exploration in more demanding terrain and environments, but they also face far more competition in what they previously regarded as their traditional marketplace. The goal of meeting both shareholder and customer needs, while simultaneously attempting to increase market share by becoming more competitive, will be paramount if this success is to be achieved. While a number of strategies have been developed over the last decade in an attempt to achieve and balance these financial goals, the control and reduction of costs play a significant part in all such ‘cost effective’ programs. Past approaches have targeted the organisational structure, internal processes and strategic advantage through acquisitions, mergers and downsizing. However, any gains realised by such programs must be continuously improved upon by implementing innovative approaches to future reductions and controlling costs. Some companies have shifted the focus from internal cost scrutiny to influencing and ultimately controlling external factors of cost. The supply chain offers a tremendous opportunity to drive out costs, one such approach being to partner with the best suppliers of key components to shorten delivery times while minimizing life cycle costs. It is therefore paramount that one distinguishes between those who are simply suppliers and that smaller group who are the best suppliers, all the while fostering a win-win relationship by sharing growth and profitability. This paper will introduce the concepts of the Supplier Performance Measurement Process (SPMP), which NOVA / TransCanada introduced in late 1997 to measure and manage its suppliers’ performance in the provision of a few strategically critical commodities. To provide context for this paper two such commodities, high pressure line pipe and high integrity pipe coatings are addressed in some detail. The application of the process to these commodities alone yielded a capital cost reduction of 6%. The paper explains in practical terms, the steps involved in the implementation of SPMP, and provides a simple process for eliciting feedback on the efficacy of the procurement process.

Learning and development from the world's first operating subsea compression system

2017 ◽  
Vol 57 (2) ◽  
pp. 683
Author(s):  
S. Yeaw ◽  
A. Storstenvik ◽  
R. Vesterkjaer
Keyword(s):  
Oil And Gas ◽  
New Technologies ◽  
Oil And Gas Industry ◽  
Learning And Development ◽  
Gas Industry ◽  
Processing Technologies ◽  
Compression System ◽  
Field Development ◽  
Alternative Field ◽  
New Generation

After years of development, qualification and engineering, subsea compression technology is now a proven solution to increase the recovery factor for offshore gas developments. The first subsea compression system was installed at the Åsgard field in the Norwegian Sea, which started up successfully on 17 September 2015. This represents an important milestone for the oil and gas industry because, apart from representing the successful development of new subsea processing technologies, subsea compression also proves itself a viable alternative field development option to oil and gas operators. This paper shares the experiences of Aker Solutions on the Åsgard subsea compression project, from the design and the project execution phases up to the operational phase, highlighting key learnings. In addition, the paper outlines the ongoing development activities to optimise the compression system delivered for Åsgard, with particular focus on unit size and weight optimisation without requiring any qualification activities of new technologies. This new-generation subsea compression system will extend the applicability of this technology to a much wider range of fields and offshore regions.

scholarly journals Analysis of buried pipelines laid under the pipelines operation, is subjected to operational loads

2019 ◽  
Vol 6 (3) ◽  
Author(s):  
Liudmila Muravieva ◽  
Igor Ovchinnikov
Keyword(s):  
Wall Thickness ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
External Pressure ◽  
Compressive Yield Strength ◽  
Successful Operation ◽  
Gas Industry ◽  
Load Effects ◽  
Bending Loads ◽  
Definition Of

Today’s successful operation within the oil and gas industry is based on the triangle “Safety – Reliability – Profitability (Efficiency)”. It is of high importance to properly balance these different and sometimes opposite positions. The article describes the characteristics of the strength of the buried offshore pipeline. Pipe geometric imperfections as the cross section ovality, combined load effects as axial and bending loads superimposed to the external pressure, material properties as compressive yield strength in the circumferential direction and across the wall thickness etc., significantly interfere in the definition of the demanding, in such projects, minimum wall thickness requirements.

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