scholarly journals Application of 2k full factorial experiment for the determination of risk factors significance of oil and gas production enterprises’ activity

2017 ◽  
Vol 17 (1) ◽  
pp. 37-51
Author(s):  
Oksana Gryniuk
Keyword(s):  
Risk Factors ◽  
Oil And Gas ◽  
Gas Production ◽  
Factorial Experiment ◽  
Oil And Gas Production ◽  
Full Factorial Experiment ◽  
Full Factorial

scholarly journals Well Integrity Analysis and Application Based on FTA Method

2016 ◽  
Vol 2 (1) ◽  
pp. 20
Author(s):  
Lili Yan
Keyword(s):  
Risk Factors ◽  
Oil And Gas ◽  
Gas Production ◽  
Control Measures ◽  
Analysis Model ◽  
Oil And Gas Production ◽  
Wellbore Integrity ◽  
Minimum Path ◽  
Failure Risk ◽  
Production Run

<p><em>With the increase of development the well integ</em><em>c</em><em>rity</em><em> </em><em>problem are becoming more and more serious. This article uses the </em><em>F</em><em>ault </em><em>T</em><em>ree </em><em>A</em><em>nalysis (FTA) method for many factors, such as completion, production and operation process, pressure annulus, the cementing quality, the wellhead system and leakage of pipe string.</em><em> </em><em>Many wellbore risk factors to conduct a comprehensive analysis and evaluation. Through the qualitative analysis of wellbore integrity failure risk, determining the level of risk factors and establishing the damage analysis model of the wellbore. According to the selected blocks in Shengli Oilfield example analysis of single wells find out the minimum cut sets, the minimum path sets and structure importance. The results showed that the selected block probability of top event is calculated and it’s 0.9961, and the actual selection conforms to statistics prove that the proposed based on the FTA wellbore damage risk analysis method is feasible, and through quantitative analysis and calculation of basic events of different important degree of parameters.</em></p><p><em>According to these risk factors for prevention of failure risk control measures are put forward, which provides reference for predict wellbore integrity to ensure the safety of oil and gas production run smoothly.</em></p>

scholarly journals Atmospheric Benzene and Determination of Trans, Trans-Muconic Acid of Workers at Oil Sites in Pointe-Noire

2021 ◽  
pp. 82-90
Author(s):  
Ebenguela Ebatetou Ataboho ◽  
Josué Richard Ntsimba Nsemi ◽  
Donatien Moukassa
Keyword(s):  
Oil And Gas ◽  
Cross Sectional Study ◽  
Gas Production ◽  
Medical Surveillance ◽  
Muconic Acid ◽  
Cross Sectional ◽  
Oil And Gas Production ◽  
Risk Of Exposure ◽  
Production Company

Trans, trans-muconic acid is generally considered a useful biomarker of exposure to benzene that occurs naturally in crude oil. Objective: To estimate exposure of benzene to workers in an oil and gas production company. Materials and Methods: Firstly, it was a descriptive, cross-sectional study which consisted of benzene atmospheric quantification in a sample individual measurements of a homogeneous exposure group of workers. Secondly, urinary assays of trans, trans-muconic acid have been performed at the end of the shift in the selected workers. Results: A total of 79 (47.88%) workers agreed to participate in the study. Seventeen atmospheric samples were usable and 79 urinary assays at the end of the shift were carried out. The average benzene concentration for all sites was 10 times lower than the regulatory average exposure value (1 ppm=3.25 mg/m3):average: 0.122pp, median: 0.053ppm and range: 0.019-1.448 ppm. All 79 urinary assays of trans, trans-muconic acid were below the biological exposure index (<500 µg/g creatinine) with an average of 37.34 µg/g creatinine, a median of 30 µg/g creatinine, and an extent from 10 to 150 µg/g creatinine. Conclusion: Airborne benzene concentrations were below company limits. The same was true for the urinary assays of trans, trans-muconic acid. Overall, therefore, exposure to benzene is low in this company. However, there is a need to maintain regular medical surveillance as the risk of exposure is ongoing.

scholarly journals Estimation of ergonomic indicators of special purpose clothing for patients with thermal injuries

2021 ◽  
pp. 80-85
Author(s):  
G. S. Shaizadanova ◽  
K. Zh. Kucharbaeva ◽  
N. S. Mokeeva ◽  
L. B. Loginova ◽  
K. K. Abilkalamova
Keyword(s):  
Mathematical Model ◽  
Optimal Design ◽  
Human Body ◽  
Factorial Experiment ◽  
Full Factorial Experiment ◽  
Ic 10 ◽  
Thermal Injuries ◽  
Full Factorial ◽  
Contact Pressures

This article discusses the determination of the optimal design allowances for a full factorial experiment in the development of special-purpose clothing for patients with thermal injuries in a hospital. To assess the ergonomic performance of special-purpose clothing, was used of pressure exerted by clothing on the human body. Based on the results of the study, a mathematical model was developed based on a full factorial experiment. In accordance with the presented mathematical models, the minimum values of contact pressures are obtained for the following values of construction parameters: for a cut with a sewn-in sleeve Warmhole = 15 cm, Ifa = 5,0 cm, Ic = 9 cm, Hse = 10 cm; for a cut with a raglan sleeve Warmhole = 15 cm, Ifa = 6 cm, Ic = 10 cm; for a cut with a one-piece sleeve Warmhole = 16 cm, Ifa = 6 cm, Ic = 11 cm.

scholarly journals ANALYSIS OF THE STATE OF SERVICEABILITY IN THE PROCESS OF WEAR OF ELEMENTS DURING THE OPERATION OF OIL AND GAS PRODUCTION EQUIPMENT

2021 ◽  
Vol 08 (04) ◽  
pp. 87-94
Author(s):  
Sevda Aliyeva Sevda Aliyeva
Keyword(s):  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
The State ◽  
Structural Elements ◽  
Structural Element ◽  
Oil And Gas Production ◽  
Total Utility ◽  
Generalized Indicator

The generalized indicator of useful use, depending on the state of individual elements of oil-producing equipment, characterizes the ability of this equipment to perform its function during operation at optimal working time. The generalized indicator of the useful use of operational equipment can be described as the calculated sum of the indicator of the useful use of individual equipment elements. If, during operation, the oil-producing equipment retains its operability due to frequent replacement of its structural and non-structural elements, then such operational equipment is considered by users as outdated. Operating equipment can be divided into 6 categories according to the indicators of suitability. The article analyzes the state of useful use of equipment and, as a result, the total utility of equipment is calculated in accordance with the indicators of useful use by category, and graphs of changes in the state of useful use are constructed. Based on the study of the graphs of the useful use of equipment, it was proposed to conduct an analysis in the following areas: • Evaluation of the design and technological perfection of the equipment by users according to important new parameters. • Determination of equipment compliance with wear standards during operation. Keywords: structural element, wear theory, the usefulness of jam, categories, schedule of changes, reliability.

scholarly journals Value Change in Oil and Gas Production: V. Incorporation of Uncertainties and Determination of Relative Importance

2002 ◽  
Vol 20 (5) ◽  
pp. 347-364
Author(s):  
I. Lerche ◽  
S. Noeth
Keyword(s):  
Oil And Gas ◽  
Development Project ◽  
Gas Production ◽  
Expected Value ◽  
Oil Field ◽  
Relative Importance ◽  
Oil And Gas Production ◽  
Equal Importance ◽  
Parameter Values

The influence of two fundamentally different types of uncertainty on the value of oil field production are investigated here. First considered is the uncertainty caused by the fact that the expected value estimate is not one of the possible outcomes. To correctly allow for the risk attendant upon using the expected value as a measure of worth, even with statistically sharp parameters, one needs to incorporate the uncertainty of the expected value. Using a simple example we show how such incorporation allows for a clear determination of the relative risk of projects that may have the same expected value but very different risks. We also show how each project can be risked on its own using the expected value and variance. This uncertainty type is due to the possible pathways for different outcomes even when parameters categorizing the system are taken to be known. Second considered is the risk due to the fact that parameters in oil field estimates are just estimates and, as such, have their own intrinsic errors that influence the possible outcomes and make them less certain. This sort of risk depends upon the uncertainty of each parameter, and also the type of distribution the parameters are taken to be drawn from. In addition, not all uncertainties in parameter values are of equal importance in influencing an outcome probability. We show how can determine the relative importance for the parameters and so determine where to place effort to resolve the dominant contributions to risk if it is possible to do so. Considerations of whether to acquire new information, and also whether to undertake further studies under such an uncertain environment, are used as vehicles to address these concerns of risk due to uncertainty. In general, an oil filed development project has to contend with all the above types of risk and uncertainty. It is therefore of importance to have quantitative measures of risk so that one can compare and contrast the various effects, and so that corporate decision-makers can use the information in a rational manner as they seek to enhance corporate profit. This paper provides such methods and measures of assessing risk.

scholarly journals Comprehensive Study of the Action of Corrosion Inhibitors Based on Quaternary Ammonium Compounds in Solutions of Hydrochloric and Sulfamic Acids

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 24
Author(s):  
Silin Mikhail ◽  
Magadova Lyubov ◽  
Davletshina Lucia ◽  
Poteshkina Kira ◽  
Kotekhova Viktoriia ◽  
...  
Keyword(s):  
Acid Concentration ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Sulfamic Acid ◽  
Gas Production ◽  
Steel Plates ◽  
Oil And Gas Production ◽  
Negative Effect ◽  
Oilfield Equipment

Acid treatments are one of the methods for intensifying oil and gas production. Corrosion is a significant factor affecting the performance of oilfield equipment. There are many different methods of preventing corrosion, but corrosion inhibitors are most commonly used in industry. The protective effect of the inhibitor is directly determined by the effective adsorption of surfactants on the metal surface. For an indirect assessment of the adsorption of the inhibitor, a comprehensive research method is proposed based on the determination of the interfacial tension of acid compositions and steel plates’ contact angle of wetting after corrosion tests. It was found that in hydrochloric acid the adsorption of the inhibitor IC-1 reaches a maximum after 6 h, an increase in the acid concentration in the range of 5–15% wt. has a negative effect on the activity of the inhibitor. For sulfamic acid, the maximum adsorption of the IC-2 inhibitor is observed after 24 h, an increase in acid concentration has a positive effect on surfactants.

scholarly journals APPLICATION OF INTELLECTUAL TECHNOLOGIES FOR ELECTRICAL ENGINEERING COMPLEXES AT OIL AND GAS PRODUCTION ENTERPRISES

2020 ◽  
Vol 2018 (1) ◽  
pp. 162-169
Author(s):  
Andrey Kryukov ◽  
Yuriy Konovalov
Keyword(s):  
Computer Modeling ◽  
Power Supply ◽  
Oil And Gas ◽  
Electrical Engineering ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Multi Agent ◽  
Determination Of Parameters ◽  
Jet Power

Multi-agent approach to management of the modes of systems of power supply of the enterprises of oil and gas branch is considered. The technique of determination of parameters of effectors for management of tension and streams of jet power is offered. On the basis of computer modeling it is shown that the offered technology of modeling allows to determine parameters of the effectors providing management of tension and jet power in the system of power supply substation oilfield.

scholarly journals DEVELOPMENT AND RESEARCH OF THE WELL PLUGGINGMICROCEMENT-BASED COMPOSITION TO LIMIT AND ELIMINATE THE WATER INFLOWS INTO OIL AND GAS WELLS

2016 ◽  
pp. 62-72 ◽  
Author(s):  
D. S. Leontiev ◽  
I. I. Kleschenko ◽  
A. V. Kustyshev ◽  
V. A. Dolgushin ◽  
M. D. Zavatski ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Factorial Experiment ◽  
Gas Wells ◽  
Mathematical Planning ◽  
Full Factorial Experiment ◽  
Study Results ◽  
Oil And Gas Wells ◽  
Full Factorial

The article discusses development of the backfill composition based on OTDV «Mikrodur». A method of mathematical planning of the experiment is described used to prove the optimal formulation of water isolation composition and the processing of the study results by application of the procedure of “full factorial experiment”. The results of the study by computer microtomography of the formed plugging stone are also presented.

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