Modeling the Properties of H2S/CO2/Salt/Water Systems in Wide Ranges of Temperature and Pressure

SPE Journal ◽  
2015 ◽  
Vol 20 (05) ◽  
pp. 1120-1134 ◽  
Author(s):  
Ronald D. Springer ◽  
Peiming Wang ◽  
Andrzej Anderko
Keyword(s):  
Gibbs Energy ◽  
Excess Gibbs Energy ◽  
Oil And Gas ◽  
Salt Water ◽  
Oil And Gas Industry ◽  
Individual Species ◽  
Standard State ◽  
Gas Industry ◽  
Equilibrium Data ◽  
Carbon Dioxide Co2

Summary To address the need to predict the properties of fluids in severe environments in the oil and gas industry, a comprehensive thermodynamic model has been developed for mixtures containing hydrogen sulfide (H2S), carbon dioxide (CO2), H2O, and selected salts. The model is based on the previously developed mixed-solvent electrolyte framework, which combines an equation of state for standard-state properties of individual species, an excess-Gibbs-energy model, and an algorithm for solving phase and chemical equilibria in multiphase systems. The standard-state properties are calculated from the Helgeson-Kirkham-Flowers (Helgeson et al. 1974a, 1974b, 1976, 1981; Tanger and Helgeson 1988) equation, whereas the excess Gibbs energy is expressed as a sum of a long-range electrostatic-interaction term expressed by a Pitzer-Debye-Hückel equation (Pitzer 1980), a virial coefficient-type term for interactions between ions, and a short-range term for interactions involving neutral molecules. The model has been parameterized using critically evaluated phase equilibrium data for various binary and ternary subsystems of the H2S/CO2/H2O/Na/Ca/Cl system and has been validated for temperatures ranging from 0 to 300°C, pressures up to approximately 3,500 atm, and salt concentrations up to solid saturation. The model reproduces chemical speciation in acid gas/brine systems as exemplified by the accurate prediction of pH. Because of its capability of predicting pH and activities of solution species, the model can serve as a foundation for studying metal/environment interactions in severe oil and gas environments.

ECOLOGICAL ASSESSMENT OF THE MICROBIOLOGICAL STATE OF OIL-CONTAMINATED SOILS

2021 ◽  
Vol 102 (3) ◽  
pp. 17-26
Author(s):  
G.A. Dzhamalovа ◽  
◽  
L.S. Kurbanova ◽  
B.H. Tusupova ◽  
M. Nakypbek ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Population Biology ◽  
Oil And Gas ◽  
Terrestrial Ecosystems ◽  
Oil And Gas Industry ◽  
Petroleum Products ◽  
Individual Species ◽  
Gas Industry ◽  
Environmental Objects ◽  
Abiotic And Biotic Factors

The main environmental problem in regions with a developed oil and gas industry is the pollution of environmental objects with oil and petroleum products. In the oil and gas regions of the country, an extremely unfavorable environmental situation has already developed, which is getting worse from year to year. In this article, an environmental assessment is carried out by microbiological and chemical analysis of gray-brown soils contaminated with oil and petroleum products. The paper reflects the bioindication value of various ecological and trophic groups of microorganisms, in particular, heterotrophic microorganisms and mold fungi. Analysis of the responses of mold fungi to various types of anthropogenic impact in terrestrial ecosystems makes it possible to better assess the bioindication potential of the microbiota. Based on the data obtained, it is possible to trace the survival strategy of various microbial communities in the studied anthropogenic ecosystem. Modern developments in the basic principles of microbial community ecology, as well as advances in population biology and numerous data on the response of individual species to abiotic and biotic factors will allow us to analyze the bioindication potential of the microbiota at different levels of the ecotechnosystem organization. The use of our data provides a basis for developing a plan of measures aimed at improving the health of the environment.

OIL SPILL CONTROL IN ALBERTA

1977 ◽  
Vol 1977 (1) ◽  
pp. 91-94
Author(s):  
V. E. Bohme ◽  
E. R. Brushett
Keyword(s):  
Oil Spill ◽  
Oil And Gas ◽  
Comprehensive Evaluation ◽  
Salt Water ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Rehabilitation Programs ◽  
Resources Conservation ◽  
Spill Control ◽  
High Degree

ABSTRACT Alberta is a major oil-producing region in North America. In excess of one-half billion barrels per year are produced from 10,000 oil wells. Oil and produced salt water are transported through 20,000 miles of pipelines. More than 600 oil and salt water spills per year occur, generally on land. The Energy Resources Conservation Board is responsible for the administration of the oil and gas industry. The board's policies and regulations relating to spill prevention, oil spill contingency planning, containment and cleanup are broad and flexible to permit industry a relatively high degree of freedom to operate in this area of rapidly-changing technology. While each company is held responsible for containment and cleanup of its own spills, the board supports the oil spill cooperative concept in spill equipment maintenance, contingency plan preparation and spill response training. Careful containment and cleanup of oil and salt spills will minimize soil and vegetation damage. This, followed by comprehensive evaluation of spill effects, enables implementation of more effective rehabilitation programs.

Deployment of Digital NDT Solutions in the Oil and Gas Industry

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

What Does Rent Give to Federal Budget (on the Russia's Budget Dependence upon "Oil Dollars")

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin
Keyword(s):  
Oil And Gas ◽  
Strong Dependence ◽  
Oil Prices ◽  
Federal Budget ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Resource Rent ◽  
Tax Legislation ◽  
Russian Economy ◽  
The Government

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.

The Political Economy of Power: Approaches to the Analysis of Relationships between the State and Business in Russia

2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik
Keyword(s):  
Oil And Gas ◽  
Road Construction ◽  
Oil And Gas Industry ◽  
Retail Trade ◽  
Business Community ◽  
The Political ◽  
Economic Power ◽  
Gas Industry ◽  
The Road ◽  
Ruling Elites

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.

Consideration of Geopolitical Challenges within the Analysis of Geoenvironmental Risks for Oil and Gas Development of the Russian Arctic

2019 ◽  
Vol 16 (6) ◽  
pp. 50-59
Author(s):  
O. P. Trubitsina ◽  
V. N. Bashkin
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Optimal Operation ◽  
The Arctic ◽  
Stage Model ◽  
Oil And Gas Development ◽  
Gas Industry ◽  
The Impact ◽  
Further Development ◽  
Geopolitical Risks

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

Sign in / Sign up

Export Citation Format

Share Document