Dynamic Response Interaction of Vibrating Offshore Pipeline on Moving Seabed

2006 ◽  
Vol 129 (2) ◽  
pp. 107-119 ◽  
Author(s):  
Vincent O. S. Olunloyo ◽  
Charles A. Osheku ◽  
Ayo A. Oyediran
Keyword(s):  
Dynamic Response ◽  
Oil And Gas ◽  
Fluid Velocity ◽  
Gas Industry ◽  
Offshore Pipeline ◽  
Internal Fluid ◽  
Geomechanical Property ◽  
Sediment Cover ◽  
The Subject ◽  
Oil Gas

The dynamic response interaction of a vibrating offshore pipeline on a moving seabed is herein investigated where the pipeline is idealized as a beam vibrating on an elastic foundation. This problem is of relevance in offshore exploration where pipelines are laid either on or buried in the seabed. When such pipes carry oil and gas, the undulating topography of the sea floor and the internal motion of the fluid subject the entire structure to vibration due to bending forces and form the subject of our study. Our analysis revealed that in general, the seabed acts either as a damper or as a spring and in particular when we have sedimentation, the seabed geology permits the geomechanical property of the sediment cover to act only as a damper. As expected, external excitation will increase the response of these pipes for which an amplification factor has been derived. For soft beds, high transverse vibrations were dampened by increasing the internal fluid velocity whereas they became amplified for hard beds. These results are of contemporary interest in the oil/gas industry where deep sea exploration is now receiving significant attention.

Dynamic Response Interaction of Vibrating Offshore Pipeline and Moving Seabed With Varying Geological and Geo-Mechanical Properties

2004 ◽  
Author(s):  
Vincent O. S. Olunloyo ◽  
Ayo A. Oyediran ◽  
Charles A. Osheku
Keyword(s):  
Dynamic Response ◽  
Fluid Velocity ◽  
Time History ◽  
Stress Distributions ◽  
Pipe Burst ◽  
History Effects ◽  
Offshore Pipeline ◽  
Internal Fluid ◽  
Density Analysis ◽  
Sediment Cover

The dynamic response interaction of a vibrating offshore pipeline on a moving seabed is herein investigated where the pipeline is idealized as a beam vibrating on an elastic foundation. In particular the time history effects on physics of the stress distributions on the dynamic interaction predicted on sea state and waves is studied. The spectral density analysis of responses and stress distributions over time is used to predict the anticipated time for pipe burst using the seabed state. The studies also revealed that in general, the seabed acts either as a damper or as a spring and in particular when we have sedimentation, the seabed geology permits the geo-mechanical property of the sediment cover to act only as a damper. As expected, external excitation will increase the response of these pipes for which an amplification factor has been derived. For soft beds, high transverse vibrations were dampened by increasing the internal fluid velocity whereas they became amplified for hard beds.

scholarly journals Clay Minerals – Mineralogy and Phenomenon of Clay Swelling in Oil & Gas Industry

2015 ◽  
Vol 15 (1) ◽  
pp. 37-55 ◽  
Author(s):  
B. Karpiński ◽  
M. Szkodo
Keyword(s):  
Clay Minerals ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Review Literature ◽  
Gas Industry ◽  
Clay Swelling ◽  
Swelling Clays ◽  
History Of ◽  
The Subject ◽  
Oil Gas

Abstract Among the minerals found in the earth's crust, clay minerals are of the widest interest. Due to the specific properties such as plasticity, absorbing and catalytic properties clay minerals are used in many industries (oil & gas, chemistry, pharmacy, refractory technology, ceramics etc.). In drilling, a phenomenon of swelling clays is frequently observed. It has an important impact on the cementing quality. During the last few decades clays have been the subject of research on a scale unprecedented in the history of mineralogy. This paper presents review literature on mineralogy of clay minerals and phenomenon of swelling in oil and gas industry. Unique ion exchange properties and clay swelling mechanisms are also considered.

GEOLOGICAL AND PHYSICAL CHARACTERISTICS OF PRODUCING FORMATIONS AND THEIR ROLE IN OCCURRENCE OF OIL, GAS AND WATER SHOWINGS

2015 ◽  
pp. 117-120
Author(s):  
D. M. Chudnovskii ◽  
V. A. Dolgushin ◽  
J. S. Popova
Keyword(s):  
Oil And Gas ◽  
Physical Characteristics ◽  
The Subject ◽  
Oil Gas

The subject of this study are geological and physical characteristics of productive strata in oil and gas deposits.

Quantifying Economic Uncertainties and Risks in the Oil and Gas Industry

2021 ◽  
pp. 154-184
Author(s):  
Sorin Alexandru Gheorghiu ◽  
Cătălin Popescu
Keyword(s):  
Business Performance ◽  
Oil And Gas ◽  
Water Injection ◽  
Oil And Gas Industry ◽  
Oil Field ◽  
Gas Industry ◽  
Field Development ◽  
Drilling Rig ◽  
Oil Field Development ◽  
Oil Gas

The present economic model is intended to provide an example of how to take into consideration risks and uncertainties in the case of a field that is developed with water injection. The risks and uncertainties are related, on one hand to field operations (drilling time, delays due to drilling problems, rig failures and materials supply, electric submersible pump [ESP] installations failures with the consequences of losing the well), and on the other hand, the second set of uncertainties are related to costs (operational expenditures-OPEX and capital expenditures-CAPEX, daily drilling rig costs), prices (oil, gas, separation, and water injection preparation), production profiles, and discount factor. All the calculations are probabilistic. The authors are intending to provide a comprehensive solution for assessing the business performance of an oil field development.

The Impact of News on the MICEX Oil & Gas Index: Textual Analysis

2018 ◽  
Vol 2018 (4) ◽  
pp. 79-99
Author(s):  
Elena Fedorova ◽  
Oleg Rogov ◽  
Valery Klyuchnikov
Keyword(s):  
Oil And Gas ◽  
Pearson Correlation ◽  
Oil And Gas Industry ◽  
Stock Index ◽  
Gas Industry ◽  
Negative News ◽  
The Russian Federation ◽  
Oil And Gas Companies ◽  
The Impact ◽  
Oil Gas

In this study, a relationship between the mood of news and the response of the oil and gas industry index of the Russian Federation was revealed. The empirical base of the study included 8.5 million news from foreign sources. Research methodology: fuzzy sets, naive Bayesian classifier, Pearson correlation coefficient. As a result of the research, it was discovered that: 1) negative news affects the stronger than the positive on the stock index; 2) news on companies affect the value of the index, and news on the industry affect the volume of trading; 3) the sanctions did not significantly affect the coverage of Russian oil and gas companies.

Erosion of Elbows in Oil and Gas Production Systems

2012 ◽  
Vol 479-481 ◽  
pp. 1129-1132
Author(s):  
Wang Ming Bo
Keyword(s):  
Oil And Gas ◽  
Production Systems ◽  
Oil And Gas Industry ◽  
Gas Production ◽  
Gas Industry ◽  
Oil And Gas Production ◽  
Sand Erosion ◽  
The Subject ◽  
Erosion Mechanisms ◽  
Definitive Methods

This paper gives an overview of erosion mechanisms in elbows in oil and gas production systems. The nature of the erosion process itself makes it very difficult to develop some definitive methods or models to prevent or predict the erosion in elbows in all conditions. This paper provides a review of the subject which will help petroleum engineers to handle the erosion problems in oil and gas industry. This review is given of different erosion mechanisms connected with sand erosion and the factors that influence them, and then the review goes on to look at particulate erosion in elbows in more details. Conclusions are then drawn based on the above analyses.

scholarly journals Health and safety in the offshore oil and gas industry

2013 ◽  
Vol 20 (65) ◽  
pp. 25-27
Author(s):  
Liz Mackie
Keyword(s):  
Occupational Health ◽  
Oil And Gas ◽  
Safety Information ◽  
Health And Safety ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
The Subject ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Safety And Environment

Since the 'Piper Alpha' disaster in 1988 the system of regulating occupational health and safety in the offshore oil and gas industry has been the subject of radical reorganization. During vacation employment in the Safety and Environment Department of a North Sea oil producer during 1993 the difficulties that can arise in identifying a particular regulation or in obtaining a specific document were experienced at first hand. Standard bibliographic tools do not identify sources of health and safety information specific to the industry and it was felt that further guidance would be beneficial.

scholarly journals Characterization and Treatment Technologies Applied for Produced Water in Qatar

Water ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 3573
Author(s):  
Hana D. Dawoud ◽  
Haleema Saleem ◽  
Nasser Abdullah Alnuaimi ◽  
Syed Javaid Zaidi
Keyword(s):  
Natural Gas ◽  
Oil And Gas ◽  
Produced Water ◽  
Cost Effective ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Treatment Techniques ◽  
Treatment Technologies ◽  
Oil Gas

Qatar is one of the major natural gas (NG) producing countries, which has the world’s third-largest NG reserves besides the largest supplier of liquefied natural gas (LNG). Since the produced water (PW) generated in the oil and gas industry is considered as the largest waste stream, cost-effective PW management becomes fundamentally essential. The oil/gas industries in Qatar produce large amounts of PW daily, hence the key challenges facing these industries reducing the volume of PW injected in disposal wells by a level of 50% for ensuring the long-term sustainability of the reservoir. Moreover, it is important to study the characteristics of PW to determine the appropriate method to treat it and then use it for various applications such as irrigation, or dispose of it without harming the environment. This review paper targets to highlight the generation of PW in Qatar, as well as discuss the characteristics of chemical, physical, and biological treatment techniques in detail. These processes and methods discussed are not only applied by Qatari companies, but also by other companies associated or in collaboration with those in Qatar. Finally, case studies from different companies in Qatar and the challenges of treating the PW are discussed. From the different studies analyzed, various techniques as well as sequencing of different techniques were noted to be employed for the effective treatment of PW.

scholarly journals Innovation-oriented resource management model proposed on the basis of the methodology of economic assessment of resource capabilities of oil and gas industry contractors

2021 ◽  
Vol 116 ◽  
pp. 00010
Author(s):  
Inna Vinokur ◽  
Svetlana Ponomareva
Keyword(s):  
Resource Management ◽  
Oil And Gas ◽  
Economic Assessment ◽  
Oil And Gas Industry ◽  
Management Model ◽  
Gas Industry ◽  
Scientific Problem ◽  
Material Resources ◽  
Economic Justification ◽  
The Subject

The paper presents an innovation-oriented model of resource management, which was built on the basis of the methodology of economic assessment of resource capabilities of contracting companies of the oil and gas industry. Assessment and choice of resource capabilities of contracting companies is the most important scientific problem of large companies and enterprises of the oil and gas industry when purchasing material resources. Currently, the increase in the supply of the same type of resources exacerbates the problem of choice. Thus, a large number of algorithms, methods and other procedures were developed to select organizations that supply resources. However, there are not enough comprehensive tools to assess the feasibility of selecting a supplier taking into account factors that allow evaluating suppliers of a certain industry. The purpose of the study is to create an innovative resource management model based on the methodology of economic justification for choosing resource suppliers for oil and gas enterprises. The object of the study is enterprises and large companies of the oil and gas industry. The subject of the study is effective resource management based on the methodology of economic assessment of the resource capabilities of contracting companies.

scholarly journals Corrosion Control, Prevention and Mitigation in Oil & Gas Industry

2019 ◽  
Vol 9 (2) ◽  
pp. 1568-1572
Keyword(s):  
Oil And Gas ◽  
Continuous Production ◽  
Oil And Gas Industry ◽  
Co2 Corrosion ◽  
Gas Industry ◽  
Well Control ◽  
Material Choice ◽  
Definition Of ◽  
The Impact ◽  
Oil Gas

The impact of corrosion within the refining industry ends up in the failure of components. This failure leads to closing down the plant to scrub the corroded components. Additionally, corrosion normally causes serious environmental issues, namely spills and releases. A vital resource for all those that are concerned within the corrosion management of oil and gas infrastructure, corrosion management within the oil and gas industry provides engineers and designers with the tools and strategies to plan and implement comprehensive corrosion-management programs for oil and gas infrastructures. Control of corrosion is important for continuous production and evading the well control losses. Materials to be used in down hole have to meet certain characteristics to avoid corrosion and provide additional mechanical strenght. It is potential to determine a logical series of steps for material choice, incorporating analysis of the surroundings, corrosion rate calculations, and final material choice based on established limits. Several developments have taken place in refinement the calculation of CO2 corrosion rates. Moreover, the definition of bitter examination has been reviewed and a way wider evaluation of the relevance of varied established and new materials for various service conditions has been created.

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