scholarly journals Geohazard Investigation On Gas Cloud Distribution At ‘B’ Field (Channel Influence)

2021 ◽  
Vol 71 ◽  
pp. 139-147
Author(s):  
Norazif Anuar Hasni ◽  
◽  
Nur Shafiqah Shahman ◽  
Jasmi Ab Talib ◽  
Deva Prasad Ghosh

Sedimentary rock deposition occur in very fast rates in offshore basin and might cause shallow subsurface geohazards that will incur high risk and increase cost of drilling operations. In general, offshore geohazards consist of a variety of geological features that contribute potential risks to the labour force, offshore amenities including the environment and surrounding areas due to the consequences of long or short period of geological processes. Therefore, further study need to be done properly in terms of geohazards classification that is significant to the offshore oil and gas developments in the Malay Basin (Bujang Field, refer Figure 1); such as shallow gas, gas hydrate, shallow water flow, slumping, landslides, faulting, pockmarks and liquefaction. To mitigate the point of costly drilling and safety risks, several techniques are needed during data gathering to visualize, interpret and identify the potential shallow drilling hazards. Besides, to a geoscientist, data integration and modelling techniques can be used to analyse the structural and physical circumstances of shallow subsurface. At the same time, gas models and geohazards map can be established based on seabed hazard analysis from seismic data to plan secure wells. Several seismic attributes such as instantaneous phase, instantaneous frequency, remove bias and envelope (reflection strength) had been used for channel detection. For gas cloud identification, seismic attributes such as remove bias, instantaneous phase, Chaos and RMS (Root Mean Square) amplitude are used. Besides that, spectral decomposition technique are used to display channel systems and other stratigraphic features in the field. Generally, this paper will explain about the meaning of geohazards in the oil and gas industry, the types of geohazards, general geohazards analysis, and will focuss on the identification of gas cloud through channel structure by applying several seismic attributes on specific parameters. All of this will be related to geohazards perspective and consequently, precautions can be undertaken systematically.

Author(s):  
Ahmed Temani ◽  
Abdennour C. Seibi ◽  
Majdi Chaari ◽  
Abdelkader Bouabdallah ◽  
Rachid Nasri

Floating Production, Storage and Offloading (FPSO) units are floating vessels used by the oil and gas industry offshore for the production and processing of hydrocarbons as well as storage of oil. It is equipped with the required facilities to produce, process, and store produced fluids. Among the equipment on board of the FPSO are pumps used to inject water or pump crude oil. This FPSO is fitted with seven positive displacement pumps powered by diesel engines; three for water injection and four for power fluid. At the exhaust of the driving engines, stainless steel bellows experienced frequent failures on a monthly basis; thereby, incurring a huge financial overburden on operating companies. Therefore, the aim of this paper is to explore the possibility of identifying some remedies to overcome this problem. The paper discusses the root causes of bellow failures attached to the exhaust system of a diesel engine on board of an FPSO. Effect of vibration, temperature, corrosion, and vessel rolling on the bellow structural response were investigated to identify the root causes of failure. A finite element modeling of the problem under study was conducted by taking into account the combined effect of thermo-mechanical loads. It was found that the thermal stress was well below the allowable stress. In addition, vibration analysis of the bellow-engine system revealed that the fundamental frequency of the bellow was way below the engine’s natural frequency. However, it was found that the vessel’s rolling generated an elevated stress that can cause failure of the bellow in a very short period time. The paper also presents some possible solutions to remedy or delay failure from occurring frequently as in this case.


Georesursy ◽  
2020 ◽  
pp. 32-35 ◽  
Author(s):  
Anatoliy N. Dmitrievskiy ◽  
Nikolay A. Eremin ◽  
Dina S. Filippova ◽  
Elizaveta A. Safarova

Digital and technological modernization of the oil and gas industry through the use of innovative technologies and platform solutions, intelligent control systems, domestic “end-to-end” digital technologies will help strengthen Russia’s position in the global oil and gas market. One of the megascience projects being developed at the Institute of Oil and Gas Research Institute of the Russian Academy of Sciences is the creation of a Geosphere Observatory. The Geosphere Observatory is focused on studying the influence of fundamental geological processes (crustal waveguides, fracture centers, etc.) in the mantle and crust of the Earth on the formation of hydrocarbon accumulations and management of field development in real time based on the introduction of advanced technologies in the field of ultra-deep drilling, fiber optics and laser physics, processing large volumes of geo-information (BigGeoData) and the theory of reconfigurable active-passive sensor networks (AntennaGrid).


2018 ◽  
Vol 224 ◽  
pp. 04022 ◽  
Author(s):  
Rail Nasibullin ◽  
Sergey Valeyev ◽  
Ainur Galeyev

To protect the technological furnaces of the oil and gas industry from the penetration into their combustion zone combustible gases that are accidentally released at the production site, steam curtains are used. In the open press, there are practically no methods that allow to evaluate the efficiency of steam curtains, so the solution of this issue seems to be topical. In this paper, we checked the adequacy of the mathematical model developed by the authors of this article. This model describes the operation of the curtain, the movement of the vapor-gas cloud in space, and the scattering of the cloud by the curtain. The verification was carried out by comparing the results of the simulation with the results of laboratory experiments of third-party authors.


2021 ◽  
Vol 44 (4) ◽  
pp. 485-495
Author(s):  
V. N. Ekzaryan ◽  
A. K. Akhmadiev

The oil and gas industry has been evolving for 150 years. Despite the predictions on the diminishing role of hydrocarbons in the second half of the 21st century, today they play a leading role in the global energy sector. In view of this there is some interest to study current development trends of the industry. This paper reviews and analyses data for the period from 2011 to 2021, which relate to the development of hydrocarbon resources in the marine and ocean environment. It was important for the authors to consider how the trends they highlighted are affecting or will affect ecosystems. The conducted research has showed that today there are three main development trends in hydrocarbon mining in the World ocean: development of the marine Arctic, continental shelf and the possibility to organize commercial production in the deep sea areas of the World ocean. For each of the directions both existing and potential ecological risks have been identified. They include loss of marine biodiversity, activation of dangerous geological processes, unpredictability of ocean environment, man-made accidents and disasters, discharges of drilling and other industrial waste, etc. The work has also identified the challenges facing the oil and gas industry. These include the search for new technologies for deep-sea production, poorly understood depth of the World ocean, need for new approaches in environmental risk management, as well as the creation of a legal framework for subsoil use regulation in new environments and areas.


2020 ◽  
Vol 78 (7) ◽  
pp. 861-868
Author(s):  
Casper Wassink ◽  
Marc Grenier ◽  
Oliver Roy ◽  
Neil Pearson

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin

Federal tax revenues from the main sectors of the Russian economy after the 1998 crisis are examined in the article. Authors present the structure of revenues from these sectors by main taxes for 1999-2003 and prospects for 2004. Emphasis is given to an increasing dependence of budget on revenues from oil and gas industries. The share of proceeds from these sectors has reached 1/3 of total federal revenues. To explain this fact world oil prices dynamics and changes in tax legislation in Russia are considered. Empirical results show strong dependence of budget revenues on oil prices. The analysis of changes in tax legislation in oil and gas industry shows that the government has managed to redistribute resource rent in favor of the state.


2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik

The article deals with the issues of political and economic power as well as their constellation on the market. The theory of public choice and the theory of public contract are confronted with an approach centered on the power triad. If structured in the power triad, interactions among states representatives, businesses with structural advantages and businesses without structural advantages allow capturing administrative rents. The political power of the ruling elites coexists with economic power of certain members of the business community. The situation in the oil and gas industry, the retail trade and the road construction and operation industry in Russia illustrates key moments in the proposed analysis.


2019 ◽  
Vol 16 (6) ◽  
pp. 50-59
Author(s):  
O. P. Trubitsina ◽  
V. N. Bashkin

The article is devoted to the consideration of geopolitical challenges for the analysis of geoenvironmental risks (GERs) in the hydrocarbon development of the Arctic territory. Geopolitical risks (GPRs), like GERs, can be transformed into opposite external environment factors of oil and gas industry facilities in the form of additional opportunities or threats, which the authors identify in detail for each type of risk. This is necessary for further development of methodological base of expert methods for GER management in the context of the implementational proposed two-stage model of the GER analysis taking to account GPR for the improvement of effectiveness making decisions to ensure optimal operation of the facility oil and gas industry and minimize the impact on the environment in the geopolitical conditions of the Arctic.The authors declare no conflict of interest


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