Gas Turbines or Electric Drives in Offshore Applications

2005 ◽  
Author(s):  
Rainer Kurz ◽  
Cynthia Sheya
Keyword(s):  
Power Generation ◽  
Electric Motor ◽  
Gas Turbines ◽  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Generation Plant ◽  
Power Generation Plant ◽  
Offshore Oil And Gas ◽  
Optimum Solution

Offshore oil and gas production requires both electric and mechanical power for various applications. Traditionally, gas turbines have been the driver of choice for both the power generation, compression and larger pump applications. Today, an alternate approach of electric motor drivers is sometimes considered for pump and compressor drivers. In this case, the power for the electric motor and utility power is supplied by larger gas turbines used as a central power generation plant. This is sometimes referred to as the “All Electric” solution. There are several important factors to be evaluated when considering options and selecting the optimum solution for this type of application. Based on general assumptions on the parameters and characteristics of possible solutions, decision criteria are derived and the sensitivity of the results relative to varying assumptions is determined.

A Comparison Between ORC and Supercritical CO2 Bottoming Cycles For Energy Recovery From Industrial Gas Turbines Exhaust Gas

2021 ◽  
Author(s):  
M. A. Ancona ◽  
M. Bianchi ◽  
L. Branchini ◽  
A. De Pascale ◽  
F. Melino ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Gas Turbines ◽  
Supercritical Co2 ◽  
Energy Demand ◽  
Oil And Gas ◽  
Gas Production ◽  
Medium Size ◽  
Oil And Gas Production ◽  
Industrial Gas Turbines

Abstract Gas turbines are often employed in the industrial field, especially for remote generation, typically required by oil and gas production and transport facilities. The huge amount of discharged heat could be profitably recovered in bottoming cycles, producing electric power to help satisfying the onerous on-site energy demand. The present work aims at systematically evaluating thermodynamic performance of ORC and supercritical CO2 energy systems as bottomer cycles of different small/medium size industrial gas turbine models, with different power rating. The Thermoflex software, providing the GT PRO gas turbine library, has been used to model the machines performance. ORC and CO2 systems specifics have been chosen in line with industrial products, experience and technological limits. In the case of pure electric production, the results highlight that the ORC configuration shows the highest plant net electric efficiency. The average increment in the overall net electric efficiency is promising for both the configurations (7 and 11 percentage points, respectively if considering supercritical CO2 or ORC as bottoming solution). Concerning the cogenerative performance, the CO2 system exhibits at the same time higher electric efficiency and thermal efficiency, if compared to ORC system, being equal the installed topper gas turbine model. The ORC scarce performance is due to the high condensing pressure, imposed by the temperature required by the thermal user. CO2 configuration presents instead very good cogenerative performance with thermal efficiency comprehended between 35 % and 46 % and the PES value range between 10 % and 22 %. Finally, analyzing the relationship between capital cost and components size, it is estimated that the ORC configuration could introduce an economical saving with respect to the CO2 configuration.

Construction of a sustainability indicators system for offshore oil and gas production units

2021 ◽  
Vol 21 (3) ◽  
pp. 147-161
Author(s):  
Lucia Maria de Araujo Lima Gaudencio ◽  
Rui de Oliveira ◽  
Wilson Fadlo Curi
Keyword(s):  
Decision Making ◽  
Sustainable Management ◽  
Oil And Gas ◽  
Current Knowledge ◽  
Management Practice ◽  
Gas Production ◽  
Sustainability Indicators ◽  
Oil And Gas Production ◽  
Offshore Oil And Gas ◽  
Offshore Oil

Production units located in the Brazilian marine environment are responsible for the production of 95.7% of oil and 78.8% of natural gas of Brazil causing economic, environmental, and social impacts motivating us to construct a system of indicators as a tool aimed to improve the sustainable management practice of these production units. To date, one of the tools most used by the oil industry is the sustainability report, oriented by guidelines from international organizations. However, these reports have a corporate character being unable to help the sustainability management of production units’ activities. The indicators were selected based on a systemic approach, using current knowledge on sustainability indicators, together with the survey of aspects relevant to the operation and management of offshore oil and gas production units. This paper describes the proposed indicators and presents the hierarchical structure of the system, built on the economic, environmental, social, and operational dimensions. The application of the proposed system of indicators, based on multicriterial and multiple decision-making analyses, validates a complex decision process, providing improved sustainable management of offshore production units by identifying points for which the necessary measures and actions can be implemented. Keywords: offshore oil and gas production; sustainability indicators; multicriteria and multiple decision-making analyses.

Offshore Oil and Gas Production and Transportation

2019 ◽  
pp. 99-126
Author(s):  
Shashi Shekhar Prasad Singh ◽  
Jatin R. Agarwal ◽  
Nag Mani
Keyword(s):  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Offshore Oil And Gas ◽  
Offshore Oil
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