Bending Behavior of Reinforced Thermoplastic Pipe

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Yong Bai ◽  
Binbin Yu ◽  
Peng Cheng ◽  
Nuosi Wang ◽  
Weidong Ruan ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Virtual Work ◽  
Engineering Application ◽  
Oil And Gas Industry ◽  
Theoretical Method ◽  
Point Of View ◽  
Material Behavior ◽  
Gas Industry ◽  
Practical Applications ◽  
Inelastic Material

Reinforced thermoplastic pipe (RTP) is a composite thermoplastic pipe, which is increasingly being used in oil and gas industry. In practical applications, RTPs inevitably experience bending during reeling process and offshore installation. The ovalization instability of RTP under pure bending was investigated. Several fundamental assumptions of RTP were proposed from the engineering application point of view. Then, based on nonlinear ring theory initially proposed by Kyriakides et al., the effect of transverse deformation through the thickness was introduced, and the ovalization growth of cross section during bending was studied according to nonlinear kinematics. The formulation was based on the principle of virtual work and was solved by a numerical solution. Inelastic material behavior of high density polyethylene (HDPE) was included, and a simplified method was proposed to simulate the behavior of fiber reinforced layer. A detailed Abaqus model was established using solid and truss elements to simulate the HDPE layer and reinforced fiber, respectively. The results obtained from the theoretical method were compared with Abaqus simulation results and test data of verification bending experiment and the results show excellent agreement. The proposed methods are helpful for RTP's engineering applications.

Pure Bending Behavior of Pipe Reinforced by Steel Wires (PSP)

2016 ◽  
Author(s):  
Gao Tang ◽  
Weidong Ruan ◽  
Ting Huang ◽  
Yutian Lu ◽  
Yong Bai
Keyword(s):  
Oil And Gas ◽  
Virtual Work ◽  
Steel Wire ◽  
Oil And Gas Industry ◽  
Theoretical Method ◽  
Pure Bending ◽  
Gas Industry ◽  
Offshore Installations ◽  
Bending Behavior ◽  
Offshore Oil And Gas

Plastic pipe reinforced by helically cross-winding steel wire (PSP) is a composite pipe, which is being applied into the offshore oil and gas industry. However, PSPs are often subjected to bending loading during the reeling process and offshore installations, which may lead to elliptical buckling due to the Brazier effect. Thus the ovalization instability of PSP under pure bending was investigated in this paper. According to the nonlinear ring theory, the ovalization growth of cross section during bending was studied. Then, the formulation was developed based on the principle of virtual work and was efficiently solved by Newton-Raphson method. Besides, a simplified method was proposed to simulate the behavior of steel wire reinforced layer. To verify the accuracy of the theoretical method, an ABAQUS model was employed to simulate the buckling response of PSP under pure bending. The results obtained from the theoretical method were compared with ABAQUS simulation results, and they show excellent agreements. The results can be used for predicting PSP’s bending behavior in offshore engineering applications.

scholarly journals The Oil and Gas ROFR: Understanding Current ROFR Issues from the Point of View of the Transactional Lawyer, the Litigator, and In-House Counsel

2017 ◽  
Author(s):  
Donald G. MacDiarmid ◽  
Sean J. Korney ◽  
Melanie Teetaert ◽  
Julie J.M. Taylor ◽  
Robert Martz ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Point Of View ◽  
Economic Consequences ◽  
Complex Nature ◽  
Gas Industry ◽  
Industry Standard ◽  
The Law ◽  
To Come ◽  
Corporate Lawyers

Rights of first refusal and other preferential or pre-emptive rights (together, ROFRs, and individually a ROFR) routinely find their way into oil and gas industry agreements. Disputes often arise because of the complex nature and significant economic consequences of ROFRs. In recent years, a number of reported cases, either relating directly to ROFRs or more generally relating to contractual interpretation, have clarified (or at times muddied) the waters surrounding the use, application, and interpretation of ROFRs. However, most ROFR disputes never result in a reported decision because the parties typically negotiate solutions long before trial.The authors consider current trends involving ROFRs in oil and gas agreements, and how they believe the law and legal practice surrounding ROFRs might continue to evolve in the years to come. The authors do not attempt to rehash the fundamentals of the law surrounding ROFRs; instead, they focus on how the courts have dealt with ROFRs in recent cases as well as how corporate lawyers and in-house counsel grapple with ROFRs day-today. The authors utilize the ROFR provisions found in industry standard contracts to analyze outstanding areas of uncertainty as well as what lawyers should contemplate prior to including a ROFR in an agreement. Additionally, the article examines the implications of recent rulings on the duty of good faith that may affect ROFRs. Finally, the article considers selected subjects of topical interest, including ROFRs in the context of busted butterfly transactions, insolvency proceedings, and package deals.

scholarly journals Tropical Tannin for Engineering Application

2019 ◽  
Vol 20 (1) ◽  
pp. 248
Author(s):  
Nor Adzwa Binti Rosli ◽  
Wan Asma Ibrahim ◽  
Zulkafli Hassan ◽  
Azizul Helmi Bin Sofian
Keyword(s):  
Oil And Gas ◽  
Drilling Fluid ◽  
Engineering Application ◽  
Oil And Gas Industry ◽  
Mercury Removal ◽  
Plant Origin ◽  
Gas Industry ◽  
Environmental Threat ◽  
Application Industry ◽  
New Compounds

In this study, some approaches have been proposed to establish an alternative and option of brand-new compounds by using green sources that can minimize the environmental threat in the engineering application industry. Tannin, a chemical component extracted from plant origin, has the potential to bind with proteins and other polymers. The description of tannin can be amplified to cover a complete mass of constituents which give typical phenolic reactions, and hence, it has the properties to interact with the aqueous solution. The potential of tannin to associate allows its usability in the oil and gas industry. The aim of this review in this particular context will be emphasized the use of tannin in the implementation of drilling fluid, mercury removal, wastewater treatment, and corrosion inhibitor.

Russian Scanners for Eddy Current Testing of Drilling Pipe Elements in the Oil and Gas Industry

NDT World ◽  
2020 ◽  
pp. 5-8
Author(s):  
Aleksandr Kazachenko
Keyword(s):  
Control Charts ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Complex Problem ◽  
Point Of View ◽  
Destructive Testing ◽  
Gas Industry ◽  
Shewhart Control ◽  
Inspection Process ◽  
Composite Pipes

Composite materials appear to be an ideal solution to a complex problem with conflicting conditions: how to simultaneously obtain sufficient strength, reliability and durability of the structure, while providing the minimum possible mass of it. However, non-destructive testing of products from them raises more and more questions. In the mass production of composite pipes for pipelines, the only possible option from the point of view of ensuring the necessary reliability, information capacity of the results of the performed inspection of products and productivity is the automation of the inspection process, which includes special methods for identifying defects. Statistical methods, including capability ratio and Shewhart control charts, should be used to estimate the error in determining the size of defects.

Rigorous Integrated Evolutionary Workflow for Optimal Exploitation of Unconventional Gas Assets

2017 ◽  
Vol 6 (1) ◽  
pp. 101-122 ◽  
Author(s):  
Tatyana Plaksina ◽  
Eduardo Gildin
Keyword(s):  
Oil And Gas ◽  
Optimal Solution ◽  
Oil And Gas Industry ◽  
Global Optimum ◽  
Optimal Number ◽  
Test Cases ◽  
Unconventional Gas ◽  
Gas Industry ◽  
Practical Applications ◽  
Mixed Optimization

Applications of stochastic evolutionary algorithms in engineering are gaining more attention in practical applications in the oil and gas industry. An important factor to consider when implementing stochastic algorithms is its ability to find the global optimum efficiently. In this study the authors formulate, implement, and test a genetic algorithm with strong elitism to solve a critical problem in the upstream oil industry: how to develop economically an unconventional gas asset. This problem involves finding the optimal number of horizontal wells, the number of transverse hydraulic fracture stages along them, and stage half-length. The described problem is inherently discrete or mixed optimization problem for which the authors develop a conceptually new evolutionary integrated framework that addresses all production design questions. They outline the range of applicability of their workflow and provide ample test cases and results. Their rigorous formulation performs well for a given problem statement and finds the optimal solution that is consistent with the industry accepted optimum.

The Assessment of Environmental Responsibilityof Oil and Gas Companies Operating in Russia: the Rating Approach

2015 ◽  
Vol 2015 (5) ◽  
pp. 46-67
Author(s):  
Evgeniy Shvarts ◽  
Aleksey Knizhnikov ◽  
Alexandr Pakhalov ◽  
Marina Sheresheva
Keyword(s):  
Oil And Gas ◽  
Positive Impact ◽  
Oil And Gas Industry ◽  
Comprehensive Analysis ◽  
Comparative Assessment ◽  
Point Of View ◽  
Environmental Responsibility ◽  
Gas Industry ◽  
Qualitative And Quantitative ◽  
Oil And Gas Companies

The paper analyses methodological features and results of the first Russian oil and gas companies environmental rating. This rating is relevant because Russian oil and gas industry plays a key role in the national economy and at the same time it is unfavorable and nontransparent from an environmental point of view. Our study aims to provide a comparative assessment of environmental responsibility of oil and gas companies operating in Russia. The study is based on a comprehensive analysis of qualitative and quantitative corporate indicators in three areas: environmental management, environmental impact and disclosure. Results of the rating indicate a high differentiation among Russian oil and gas companies in terms of environmental responsibility and transparency. Public listing of shares as well as linkages between shareholders and regional communities are among factors that have positive impact on the level of environmental responsibility of oil and gas companies.

scholarly journals Professional staff in the system of key factors to increase the efficiency of Iranian oil and gas complex

KANT ◽  
2020 ◽  
Vol 35 (2) ◽  
pp. 49-55
Author(s):  
Dmitriy Rodionov ◽  
Sara Daniali
Keyword(s):  
Resource Management ◽  
Professional Training ◽  
Oil And Gas ◽  
Import Substitution ◽  
Oil And Gas Industry ◽  
Professional Staff ◽  
Point Of View ◽  
Technical Cooperation ◽  
Key Factors ◽  
Gas Industry

The article discusses the issues related to the training of professional personnel for the oil and gas complex (OGC) of Iran as a key factor in increasing its ego efficiency. The authors analyzed and identified factors for improving the management system and management mechanism in NGK organizations and training highly qualified personnel to increase the efficiency of NGKs, which include attracting foreign investment, optimizing existing resource management, creating an integrated mechanism for developing the potential of the oil and gas complex, determining the priority of the most effective monetization gas, improving global perception and customer base to achieve export goals. Each of the factors is considered from the point of view of its influence on the effectiveness of NGK. The authors of the article conducted a survey of an expert domestic community and identified a structure of factors related to improving the efficiency of planning and organizing management at all levels of management in the field of oil and gas industry. The key factors include professional training and advanced training of specialists, managers and workers in mass professions; formation of the organizational and economic mechanism for managing the oil and gas complex; import substitution of technologies in the oil and gas complex; international scientific and technical cooperation; optimization of NGC resource management; optimization of marketing in the OGC system. Next, a group of specialists and experts was formed related to the problems of oil business to assess the degree of significance of factors that increase the efficiency of oil and gas operations. The article shows the distribution of places of significance of these factors. It has been revealed that personnel issues, international scientific and technical cooperation and import substitution in terms of specific importance are the most important among the factors considered. The article will be of interest to specialists, managers, executives, as well as researchers in the oil and gas industry.

scholarly journals Validation of Dynamic Risk Analysis Supporting Integrated Operations Across Systems

2019 ◽  
Vol 11 (23) ◽  
pp. 6745 ◽  
Author(s):  
Shenae Lee ◽  
Gabriele Landucci ◽  
Genserik Reniers ◽  
Nicola Paltrinieri
Keyword(s):  
Risk Analysis ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Limited Attention ◽  
Work Processes ◽  
Gas Industry ◽  
Operational Conditions ◽  
Practical Applications ◽  
Dynamic Risk ◽  
Integrated Operations

Dynamic risk analysis (DRA) is a novel industrial approach that aims to capture changes in operational conditions over time and quantify their effect on risk. This aspect may be advantageous for providing insight into the causal factors that have substantial risk contributions and supporting decisions related to risk control. Some DRA methods were developed by the oil and gas industry to support the integration of work processes and the cooperation across virtual clusters, e.g., between offshore and onshore systems and/or oil company and supplier. However, DRA has not been extensively adopted and limited attention is given to its validity in practical applications. The objective of this article is to illustrate how this validity can be established based on common validation approaches for risk analysis. The case study focuses on a DRA method named risk barometer that was developed to support integrated operations across the oil and gas industrial systems. The outcome of this study may serve as a basis for the validation of other DRA methods, the use of DRA in practical cases, and ultimately the achievement of integrated operations (IO) capabilities.

scholarly journals Investigation of Pre- and Post-Swelling Behavior of Elastomeric Material

2013 ◽  
Vol 10 (1) ◽  
pp. 65 ◽  
Author(s):  
M Akhtar ◽  
Md Velden ◽  
SSA Al-Houqani
Keyword(s):  
Bulk Modulus ◽  
Oil And Gas ◽  
Saline Water ◽  
Volumetric Strain ◽  
Oil And Gas Industry ◽  
Material Behavior ◽  
Gas Industry ◽  
Elastomeric Material ◽  
Before And After ◽  
Tension And Compression

In the last ten years, a new type of modern polymer, known as swelling elastomer, has been used extensively as a sealing element in the oil and gas industry. These elastomers have been instrumental in various new applications such as water shut off, zonal isolation, and sidetracking. Though swell packers can significantly reduce costs and increase productivity, their failure can lead to serious losses. The integrity and reliability of swelling elastomer seals under different field conditions is a major concern. The investigation of changes in material behavior over a specified swelling period is a necessary first step for performance evaluation of elastomer seals. The current study is based on experimental analysis of changes in geometric and mechanical behavior (hardness, tensile, compressive, bulk) of an elastomeric material due to swelling. Tests were carried out before and after various stages of swelling. Specimens were placed in saline water (0.6% and 12% concentrations) at a temperature of 50°C, with the total swelling period being one month. Swelling, hardness, compression, and bulk tests were conducted using disc samples, while ring samples were used for tensile experiments. A small test rig was designed and constructed for determination of bulk modulus. Stress-strain curves under tension and compression, and pressure volumetric-strain curves were obtained for specimens subjected to different swelling periods. Due to the fast-swell nature of the elastomer, there were sharp changes in mechanical properties within the first few days of swelling for both salinities. Elastic modulus derived from tensile and compressive tests showed a 90% decrease in the first few days. Bulk modulus showed fluctuation in its variation with an increasing swelling period. There was a small effect of salinity only during the first 5 or 6 days. 

scholarly journals Strategic competitiveness of oil and gas industry

2020 ◽  
Vol 4 (78) ◽  
pp. 130-135
Author(s):  
A. TAZHIDENOVA ◽  
◽  
R. SABIROVA ◽  
ZH. BISEMBIYEVA ◽  
А. KARAMULDINA ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Raw Materials ◽  
Oil And Gas Industry ◽  
World Market ◽  
Point Of View ◽  
Oil Refining ◽  
Gas Industry ◽  
Difficult Situation ◽  
Oil Companies ◽  
The World

The formation of vertically integrated companies, on the one hand, is an important stage in describing the scale of market changes, and secondly, the formation of significant structural issues of oil refining and oil transportation, as well as petrochemical enterprises. Such a complex technological decline can be explained by the lack of sufficient investment in the oil refining industry. Especially petrochemical enterprises are in a difficult situation, the lack of a stable link with raw materials suppliers, instability in the world market of petrochemical products, lack of investments hamper the development of enterprises in this field. The world market showed that in the field of oil refining and petrochemical companies their consolidation at the corporate level, as a result of which there are no prospects for the development of private oil companies, without which their competitiveness can not be increased. From this point of view, the topic of the article is relevant. Theoretical and practical bases of competitiveness of oil and gas enterprises and its management were considered. The study of the theoretical bases of competition, competitiveness and management of competitiveness, as well as factors influencing competitiveness, allowed to describe competitiveness in a comparative degree. You can note such factors that affect the competitiveness of the enterprise, as the competitiveness of products, the competitiveness of technology and the competitiveness of personnel.

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