Site Assessment Methods in Determination of Liability in Oil and Gas Property Acquisition and Divestiture

The results of repeated measurements of the acceleration of gravity by the Russian absolute ballistic field gravimeter GABL-M on points of oil and gas deposits in the permafrost over a five year period are presented. The changes of gravity acceleration by the absolute gravimeter and GRACE satellite were compared. The results of comparisons of differences gravity acceleration by ballistic gravimeter GABL-M and relative Canadian gravimeters CG5 were [i]shown. The errors in determination of parameters of the gravitational field ballistic gravimeter GABL-M and CG5 gravimeters group were presented. The method of measurement with the gravimeter GABL-M and the method of determining the vertical gradients relative CG5 gravity meters was described. The necessity of introducing corrections of hydrogeology is caused by influence of hydro geological factors on the gravitational field in the permafrost. They are comparable with the values of the field change in the result of gas pumping.

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Determination of Bubble-Point and Dew-Point Pressure Without a Visual Cell

10.2118/spe-169947-ms ◽

2014 ◽

Author(s):

R.. Hosein ◽

R.. Mayrhoo ◽

W. D. McCain

Keyword(s):

Oil And Gas ◽

Saturation Pressure ◽

Volatile Oil ◽

Phase Region ◽

Gas Condensate ◽

Dew Point ◽

Bubble Point ◽

Point Pressure ◽

Dew Point Pressure

Abstract Bubble-point and dew-point pressures of oil and gas condensate reservoir fluids are used for planning the production profile of these reservoirs. Usually the best method for determination of these saturation pressures is by visual observation when a Constant Mass Expansion (CME) test is performed on a sample in a high pressure cell fitted with a glass window. In this test the cell pressure is reduced in steps and the pressure at which the first sign of gas bubbles is observed is recorded as bubble-point pressure for the oil samples and the first sign of liquid droplets is recorded as the dew-point pressure for the gas condensate samples. The experimental determination of saturation pressure especially for volatile oil and gas condensate require many small pressure reduction steps which make the observation method tedious, time consuming and expensive. In this study we have extended the Y-function which is often used to smooth out CME data for black oils below the bubble-point to determine saturation pressure of reservoir fluids. We started from the initial measured pressure and volume and by plotting log of the extended Y function which we call the YEXT function, with the corresponding pressure, two straight lines were obtained; one in the single phase region and the other in the two phase region. The point at which these two lines intersect is the saturation pressure. The differences between the saturation pressures determined by our proposed YEXT function method and the observation method was less than ± 4.0 % for the gas condensate, black oil and volatile oil samples studied. This extension of the Y function to determine dew-point and bubble-point pressures was not found elsewhere in the open literature. With this graphical method the determination of saturation pressures is less tedious and time consuming and expensive windowed cells are not required.

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Calculation of Technical Characteristics of the Technical Fleet Vessels Involved in Ensuring Safety of the Offshore Facilities of Oil and Gas Complex

Occupational Safety in Industry ◽

10.24000/0409-2961-2021-1-7-13 ◽

2021 ◽

pp. 7-13

Author(s):

S.V. Matsenko ◽

◽

V.M. Minko ◽

A.A. Koshelev ◽

V.Yu. Piven ◽

...

Keyword(s):

Oil And Gas ◽

Oil Pollution ◽

Raw Materials ◽

Experimental Studies ◽

Industrial Safety ◽

Theoretical Studies ◽

Physical Processes ◽

Oil Spill Response ◽

Sea Area

Violation of industrial safety rules during the operation of offshore facilities for the production, storage and transportation of the hydrocarbon raw materials leads in the most cases to pollution of the marine environment with oil and its components. The works on localization and elimination of such pollution are carried out with the help of vessels of the technical support fleet and booms. When developing oil spill response plans at such facilities, a calculated determination of the technical characteristics of vessels and booms is required that are sufficient to carry out the planned activities. The basic design principles for determining the towing capacity of the technical fleet vessels involved in the localization and elimination of oil and oil product spills by trawling methods are given in the article. The calculation is based on theoretical studies performed by the authors of the physical processes occurring during the movement of objects of a mobile trawling order in the sea area. The results obtained during the course of theoretical studies were confirmed by the experimental studies carried out by the authors personally using the real pieces of equipment in the actual development of tasks for training spill containment by trawling. As a result, the empirical dependencies were obtained and experimentally confirmed, which can be used to calculate technical characteristics of the ships as part of the mobile orders and anchor systems as part of stationary orders intended for the localization and elimination of oil pollution. These results can be used, among other things, for the calculated substantiation of the technical characteristics of the technical fleet vessels designed to ensure safety of the offshore facilities for production, storage, and transportation of the hydrocarbon raw materials.

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Messmate stringybark: bark ignitability and burning sustainability in relation to fragment dimensions, hazard score and time since fire

International Journal of Wildland Fire ◽

10.1071/wf16146 ◽

2017 ◽

Vol 26 (10) ◽

pp. 866 ◽

Cited By ~ 5

Author(s):

Tara E. Penman ◽

Jane G. Cawson ◽

Simon Murphy ◽

Thomas J. Duff

Keyword(s):

Physical Properties ◽

Hazard Assessment ◽

Fire Suppression ◽

Assessment Methods ◽

Tree Size ◽

Fire Behaviour ◽

Site Assessment ◽

Field Surveys ◽

Time Since Fire ◽

Eastern Australia

Messmate stringybark is common in forests across south-eastern Australia. The bark of these trees is persistent and produces firebrands that contribute to house loss and the difficulty of fire suppression during wildfires. The trees typically survive fire with the amount of bark depleted. We compared two common methods to assess messmate bark fuels: (1) field-based hazard assessment, and (2) desk-based assessment using mapped time since fire. Our measurements included space-for-time field surveys and laboratory flammability tests. Although several physical properties of bark could be approximated from both assessment methods, some bark properties important to flammability were not captured. Ignitability was found to be dependent on the amount of char on bark fragments and could be predicted by the site assessment methods, whereas sustainability was dependent on bark fragment dimensions and could not be predicted by current methods. Bark fragment properties were found to be partially a function of tree size. Overall, these findings indicate that current bark assessment methods do not capture all the key bark properties that contribute to messmate bark’s flammability. Further research is warranted to improve bark assessment methods so they better reflect bark’s contribution to fire behaviour.

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An Algorithm of Management Decision-Making Regarding the Feasibility of Investing in Geological Studies of Forecasted Hydrocarbon Resources

Resources ◽

10.3390/resources7030047 ◽

2018 ◽

Vol 7 (3) ◽

pp. 47 ◽

Cited By ~ 4

Author(s):

Alexey Cherepovitsyn ◽

Dmitry Metkin ◽

Alexander Gladilin

Keyword(s):

Economic Evaluation ◽

Industrial Development ◽

Oil And Gas ◽

Raw Material ◽

The Arctic ◽

Management Decision ◽

Material Base ◽

Gas Field ◽

Field Development

Currently, under the conditions of increasing depletion of hydrocarbon reserves in Russia, it is necessary to consider the resource potential of poorly-researched oil and gas objects as a factor for ensuring the sustainable development of the oil and gas complex, in the context of the concept formation of rational subsoil utilization and a circular economy. The methodology of this study is based on a clear sequence of geological and economic studies of poorly-researched oil and gas objects, including four stages, such as analysis of the raw material base, assessment of the raw material potential, determination of technological development parameters, and economic evaluation. The methods of the probabilistic estimation of oil resources of the forecasted objects with regard to geological risk are outlined. Software packages “EVA—Risk Analysis” and “EVA—Economic Evaluation of Oil and Gas Field Development Projects” were used for estimation. The result of the study is the determination of the geological and economic efficiency of the development of nine hydrocarbon objects with the determination of the order of their further geological exploration, and introduction into industrial development on the example of the poorly-researched region of the Timan-Pechora oil and gas province located in the Arctic zone.

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О ФАКТОРАХ ЭФФЕКТИВНОЙ РЕАЛИЗАЦИИ ИНВЕСТИЦИОННЫХ ПРОЕКТОВ

World Science ◽

10.31435/rsglobal_ws/31052019/6520 ◽

2019 ◽

Vol 3 (5(45)) ◽

pp. 16-21

Author(s):

Мирхамидова Д. Н. ◽

Атаханова Ш. С. ◽

Соатов Ф. Й.

Keyword(s):

Oil And Gas ◽

Oil And Gas Industry ◽

Successful Implementation ◽

Gas Industry ◽

Investment Projects

In article researches on establishment of influence of geological and technology factors on efficiency of investment projects, determination of risks at implementation of investment projects in the oil and gas industry and feature and factors for successful implementation of investment projects are considered.

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Improve The Efficiency Of The Study Of Complex Reservoirs And Hydrocarbon Deposits - East Baghdad Field

10.31224/osf.io/sx5bz ◽

2020 ◽

Author(s):

Sudad H Al-Obaidi

Keyword(s):

Oil And Gas ◽

Water Saturation ◽

Well Logging ◽

Well Testing ◽

Petrophysical Parameters ◽

Oil And Gas Fields ◽

Hydrocarbon Fields ◽

Gas Fields ◽

Hydrocarbon Deposits

Practical value of this work consists in increasing the efficiency of exploration for oil and gas fields in Eastern Baghdad by optimizing and reducing the complex of well logging, coring, sampling and well testing of the formation beds and computerizing the data of interpretation to ensure the required accuracy and reliability of the determination of petrophysical parameters that will clarify and increase proven reserves of hydrocarbon fields in Eastern Baghdad. In order to calculate the most accurate water saturation values for each interval of Zubair formation, a specific modified form of Archie equation corresponding to this formation was developed.

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DETERMINATION OF THE SUSTAINABILITY OF THE PROJECT PORTFOLIO OF THE OIL AND GAS SECTOR OF THE ECONOMY TO EXTERNAL FACTORS

Intelligence Innovations Investment ◽

10.25198/2077-7175-2021-1-32 ◽

2021 ◽

pp. 32-40

Author(s):

L.S. Leontieva ◽

◽

E.B. Makarova ◽

Keyword(s):

Oil Recovery ◽

Portfolio Management ◽

Oil And Gas ◽

Oil And Gas Industry ◽

External Factors ◽

Project Portfolio ◽

Project Portfolio Management ◽

Oil And Gas Companies ◽

Oil And Gas Sector

The oil and gas sector of the economy in many states remains the main source of foreign exchange and tax revenues to the budget. Moreover, its share, for example, in Russia, accounts for about 12 % of all industrial production. However, this sector, as the practice of world oil prices shows, is experiencing not only a rise, but also a decline. Consequently, the problem of forming a balanced portfolio of oil and gas assets is an object of close attention on the part of national oil and gas companies. The issues of choosing the optimal combination of oil and gas assets in the portfolio are no less urgent, especially among the tasks that all oil and gas companies face, both in Russia and abroad. An investment portfolio or a portfolio of oil and gas assets, which includes new projects for the commissioning of fields, as well as measures to enhance oil recovery, and exploration are objects of real investment. The high volatility of the oil and gas industry is influenced by various factors, including: macroeconomic, innovation risks and a number of others. These circumstances stimulate the sector to increase the resilience of its project portfolios in order to respond flexibly to changes. In an increasingly challenging and uncertain environment, oil and gas companies around the world face constant pressures as difficult strategic decisions and building long-term plans lead to a sustainable portfolio. In order to achieve their goals and maximize profitability, companies should apply certain algorithms in their practice. The article substantiates the role and importance of project portfolio management in achieving the goals of the state and companies in the oil and gas sector. The main goal of the article is to build an algorithm that is aimed both at determining the stability of the portfolio and the ability to flexibly respond to changes in the environment. The scientific novelty of the research lies in the determination of an algorithm for assessing the sustainability of a portfolio of projects of oil and gas companies. Application of this algorithm will allow oil and gas companies to take into account the influence of external factors. The research methodology is based on such methods as analysis of internal regulations and reporting of companies for project portfolio management, risk analysis, project ranking; grouping and classification method.

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