Iranian South Oil Company Research Articles

Automatic Interpretation of Oil and Gas Well Cement Evaluation Logs Using Fuzzy Convolutional Neural Networks

Summary Cementing, as a common operation in well drilling and completions, requires accurate calculations and feasible studies. High-quality well cementing is necessary to achieve objectives and to prevent accidents and damage. The correct levels of cementation and cementation of good quality must be achieved, and thus both of these must be accurately evaluated. Cement bond quality can be assessed in various methods, for instance, the use of acoustic equipment. Acoustic readings can be processed to generate graphics of the cement status. These images are inspected by experts who assess the cement bonding visually, providing qualitative estimates of their quality. Regarding the explanations, industry needs automatic, fast, and intelligent methods. In this study, the performance of neural networks for automatic interpretation was evaluated and combined with fuzzy systems. We present a convolutional neural network (CNN) to address these challenges. The data were extracted from the oilwell logs of District 1 of Ahvaz, sampled by the National Iranian South Oil Company (NISOC), and were divided into three classes of cementing bond quality—namely, good, midrate, and bad. Each class contained 1 m data entries. The input to the CNN comprised images of sampled variable density logs (VDLs). In the second stage of analysis, the weights of the learned networks were optimized and replaced with a Bees algorithm (BA) and a fuzzy system (fuzzy-CNN). The estimated efficiency of the CNN to classify the well cement quality and fuzzy-CNN was 80.15 and 83.62%, respectively. The study provides insight into the efficiency and outputs of each of the networks studied. Problems encountered in training the networks to operate optimally as an automatic interpretation system were investigated and are discussed.

Role of Experiential Avoidance and Alexithymia in the Prediction of Psychosomatic Disorder among the Employees at National Iranian South Oil Company

Role of Experiential Avoidance and Alexithymia in the Prediction of Psychosomatic Disorder among the Employees at National Iranian South Oil Company

Changes in Climate Indices (Ivanov, Barat, and Emberger) Due to Greenhouse Gas Emissions From Gas Flares In Ahvaz Oil Field (2008-2018)

Background & Aims of the Study: Gas condensate flares are a crucial factor in greenhouse gas emissions. The present study aimed to investigate the global warming potential resulting from gas condensate flares in the Ahvaz oil field, Ahvaz City, Iran, and its impact on climate indices from 2008 to 2018. Materials and Methods: This is a descriptive cross-sectional study. The information on gas flares and climate data has been obtained from the National Iranian South Oil Company (NISOC) and meteorological stations in Khuzestan Province, Iran. The emission factor of greenhouse gases due to the burning of these flares was calculated after obtaining climatic information on gas flares in the study area. The climate indices of Ivanov, Emberger, and Barat were calculated for 11 years. Finally, the relationship between climate indices and Global Warming Potential (GWP) was determined using multiple regression. Results: The results showed that during the research period, an average of 626831.2.2 tons of carbon dioxide (equivalent) was produced due to gas flares in one month in the Ahvaz oil field. Carbon dioxide was responsible for 90% of the global warming effect of the flares. Based on the results of calculating climate indices, Ahvaz City in the studied years was classified in the category of “semi-arid” in Barat index, “dry desert” in Ivanov index, and “semi-arid desert” and “severe desert” in Emberger index. Conclusion: The results of correlation analysis between GWP and climate indices show a significant negative correlation between the values of the Emberger index and the global warming potential caused by gas flares, indicating the impact of greenhouse gases on climate change in Ahvaz. These changes have intensified phenomena such as dust and severe floods.

Advanced exergy analysis of the natural gas liquid recovery process

Energy quality in each country is one of the important indicators of economic development, Which affects the economic growth of that country. Exergy analysis, considering all flow properties including pressure, temperature, composition, is a powerful way to evaluate the energy consumption of equipment such as natural gas and liquefied gas plants. Inefficiency of a system can be defined by the conventional exergy analysis method, while, irreversible resources and real potentials for system improvement can only be identified by the advanced exergy analysis method. This analysis splits conventional exergy destruction into two exogenous and endogenous parts according to origin, and also unavoidable and avoidable parts according to the ability to remove and modifications. In this method, the exergy concept was separated by considering the ideal and avoidable condition assumptions. As a real case study, a natural gas liquid plant 800, from National Iranian South Oil Company located in southwest of Iran was considered to be investigated by conventional exergy analysis, advanced exergy analysis methods. The results of conventional exergy analysis illustrated that the highest amount of exergy destruction belonged to compressor and heat exchanger with 509.99 kW and 629.04 kW, respectively. However, in the case of heat exchanger, despite having the highest rate of exergy destruction, it is not considered in modification priorities due to its low avoidable exergy destruction value. Also, advanced exergy analysis suggested that the exergy destruction of the compressor and heat exchanger will be reduced by improving performance of these components.

Pathology of Human Resource Management System Based on International and Global Competencies in the National Iranian South Oil Company

Pathology of a competency-based human resource management system results in the managers developing appropriate schedules for employee growth and excellence to gain a competitive advantage. The present study is meant to be an applied study of a descriptive exploratory nature. Information and data gathering involves library and field research making use of interviews and questionnaires. The statistical population of this study is comprised of experts including 10 human resource managers and chief officers, selected using a targeted method. The components were determined and analyzed using the experts’ opinions and the Delphi method; furthermore, by implementing the importance-performance analysis, low-performance but high-importance components were categorized in 6 groups of “Human Resource Supply System”, “Human Resource Training and Development System”, “Human Resource Retention System”, “Human Resource Labor Relations System”, “Human Resource Performance Management System”, “Human Resource Reward System”. Moreover, to rectify the problems, the Fuzzy DEMATEL method was implemented with the results showing the “Human Resource Supply System” problem to be the most effective, eventually leading to the problem of “Human Resource Performance Management System”, being the most affected. Managers can reach a desirable human resource management system by identifying individuals of professional competence to compete in a dynamic economy.

Comprehensive pinch-exergy analyzes of the NGL recovery process

Energy quality is a very important criterion, which affects the economic growth of that country. In this study, a real-life case study Natural Gas Liquids plant 800, from National Iranian South Oil Company located in the southwest of Iran was considered by conventional exergy analysis, advanced exergy analysis, combined pinch and exergy analysis, and combined pinch and advanced exergy analysis methods. The results of conventional exergy analysis illustrate that the highest amount of exergy destruction belongs to compressors and heat exchangers with 510 and 629 kW respectively. The advanced exergy analysis suggested that the exergy destruction of the heat exchanger and compressor and will reduce by modifying the performance of these components. However, according to this analysis, for (E-101) heat exchanger despite having the highest rate of exergy destruction, is not in the priority of modification due to its low level of avoidable exergy destruction. Also, the avoidable, endogenous part of exergy destruction of the compressor (K103) and heat exchanger (E-102) will reduce by improving the performance of these components. In the following, and by using the combined Pinch and advanced exergy analysis diagram, it was possible to display simultaneously the energy consumptions rate and the unavoidable exergy destruction of the heat exchanging network. According to this graphical analysis, the plant's minimum hot and cold required utilities are equal to 411 and 10,211 kW, respectively for ΔTmin of 10.645 °C. And heat exchanger E-102 has more priorities of improvement compared to other heat exchangers.

The Effect of Workaholism on Occupational Burnout in Employees Working at Non-industrial Iranian South Oil Company (N.I.S.O.C)

Background and Objectives: The purpose of this study was to investigate the impact of Workaholism (work addiction) and its dimensions including work involvement, internal willingness to work and work enjoyment on job burnout in Non- industrial Iranian South Oil Company. Material and Methods: The statistical population studied consisted of 514 official employees of non-industrial operations management in South of Iran. The sample size is 220 people who were selected through random stratified sampling according to the Cochran formula. Maslach (2001) questionnaire was used to measure job burnout and Spence & Robbins (1992) questionnaire was used to measure Workaholism. Questionnaire scoring was based on Licker's five-choice range. The data was analyzed by Spss and Lisrel software. The validity of tool was determined by using experts view and factor analysis and the reliability determined by Cronbach alpha،which was higher than 0.7 for all the cases. Results: The effect of workaholism on job burnout was 0.71 and the effect of the dimensions of workaholism including work involvement, drive to work and work enjoyment on job burnout were 0.79, 0.83 and -0.61, respectively. Conclusion: The results showed that workaholics and its dimensions have significant impact on job burnout. workaholics, work involvement and internal willingness to work. have positive significant impact on job burnout and work enjoyment has negative significant impact on job burnout. Based on the results, the dimensions of workaholics have different effects on job burnout.

Providing a plan for improving supply chain performance improvement with attitude to factors affecting the time of goods delivery

This study titled "Providing a plan for supply chain performance improvement with attitude to factors affecting the time of goods delivery” (Procurement Commodity Management of the National Iranian South Oil Company Procurement Commodity Management of the National Iranian South Oil Company (NISOC)", was carried out aimed to prioritize the factors affecting the identification of the best and most suitable suppliers among the suppliers in the oil projects. This study is considered as a descriptive research in terms of objective and in terms of data collection method, is considered as descriptive research. According to the results of this study, the most important factors in choosing the supplier are the factors related to the quality of life and financial factors.

Designing and Explaining the Agility Structural Model of Governmental Organizations Study: National Iranian South Oil Company

Designing and Explaining the Agility Structural Model of Governmental Organizations Study: National Iranian South Oil Company

Design of new tapered-bed Dielectric Barrier Discharge reactor for atmospheric-pressure plasma modification of starch

A new Tapered Fluidized-Bed Dielectric Barrier Discharge (TBD) reactor was designed in order to better utilize Non-thermal plasma technology at atmospheric-pressure for improving the functionality of biopolymers powder. A feasibility study was completed and potato starch was successfully modified by the TBD reactor to prepare high temperature drilling starch according the NISOC (National Iranian South Oil Company) standard specification. The plasma excitation energy in the TBD reactor was measured using line-ratio method of optical emission spectroscopy equal to 0.7–0.73eV. The electron density equal to 3 × 1016cm−3 was determined using the Stark broadening of atomic argon spectrum at λ = 696.5 nm. The optimum values of reactor excitation energy, plasma-granules interactions time and gas flow rate as the main factors of the modification experiments were achieved using response surface methodology. The Thermogravimetric analysis indicated an increase in thermal resistance of modified starch due to crass-linking reaction with non-chemical argon plasma. Modified and native starch was used as water-based drilling mud additive for rheological study. After hot rolling the muds in 121 °C, desired reductions in both the viscosity (by 15%) and fluid loss (by 30%) of modified starch mud were observed.

A new approach for performance evaluation of energy-related enterprises

Oil is among the most effective and the largest industries in the world. Given that it supplies a large percentage of the world’s energy and plays a significant role in the national power and international credit of countries, it has a huge impact on our world today. Iran has huge oil reserves, and plays a key role in the exchange of the required energy in the world. In order to improve the performance of this critical industry, it is necessary to evaluate the performance of petroleum producing companies. The main purpose of this paper is to present the first three-stage data envelopment analysis-based approach, integrated with a balanced scorecard for performance evaluation of oil companies. Regarding the cause and effect relationships among different aspects of the balanced scorecard, its indicators are employed as input and output variables of the data envelopment analysis model and the efficiency is calculated. The results indicated that among the oil companies investigated in this paper, the National Iranian South Oil Company and Aravindan Oil & Gas Company recorded the highest and lowest efficiencies, respectively. The proposed approach by authors provides a valuable tool for managers in the oil industry to evaluate the performance and take action for performance improvement.

The effect of information systems on supply chain and performance of National Iranian South Oil Company (NISOC)

Accepting a kind of suitable strategies for supply chain achievement is one of the requirements of a manufacturing company.organizations to implement the different strategies of supply chain are required to use information systems.In this regard, this research respecting the different strategies of supply chain (lean and agile)and information systems strategies (efficiency and flexibility) attempt to examine the effect of these categories on supply chain performance and company. The methodology and the nature of this research is descriptive-survey. Sample population of this research is made up of nisoc’s managers and experts that are more than 2043 persons.By applying the cochrane’s formula,the sample population of this research determined as 231 persons that 222 questionaires completed and received. In this research, content validity and structure validity have been used and total questionnaire chronbach’s alfa is equal to 0/955 which indicates high level of reliability. because of measuring the effect of some dependent and indeppendent variables simultaneously, structure equations method (confirmation factor analysis) and pierson coefficient test have been used. Results indicate, in term of correational coefficient , that the effect of all variables over supply chain performance of company has been in a high level,but by applying the independent t correational test and pierson the main hypothesis and 3 sub hypotheses confirmed. Keywords: Information system strategy, lean supply chain, agile supply chain, supply chain performance

Comparing EPC contracts with conventional contracts and their effectiveness on risks of projects in National Iranian South Oil Company

Abstract. The present research aims at comparing the joint design-build contracts with conventional contracts and their effectiveness on risk of projects in National Iranian South Oil Company. This research is a practical and descriptive type. The library and field methods were used for data collection. The researchers made use of self-made questionnaires which include 55 questions. These questions are designed to include the performance indicators basics of major industrial projects. The answering scale of questionnaire is a 5scale Likert type. The statistical population of this research includes all managers and experts of Iranian South Oil Company who are involved in engineering and implementing the oil and gas projects. The number of subjects exceeds 180 people. 123 subjects were selected as samples based on Cochran formula. Because, some teste's might have left a question unanswered or because of some mistakes regarding the questionnaires, 123 questionnaires were distributed, 115 of which were collected and analyzed. The samples were selected through systematic sampling. The descriptive statistics (frequencies, mean, deviations) were used for special data and inferential statistics were used for testing the hypotheses (ANOVA , T test, Bonferroni test). The main hypothesis and all of the subsidiary hypotheses were confirmed.

Vendor Selection Using Soft Thinking Approach: A Case Study of National Iranian South Oil Company

Facing the complexity of managerial problems, on which different stakeholders have different viewpoints, has increasingly led to the use of soft systems methodology (SSM). One of these issues that play an important role, particularly in purchasing and supplying resources, is Vendor Selection. Using traditional methods of problem solving as a principal solution for such issues overlooks the significant role of human factors such as the level of knowledge and experience of experts, as well as the culture and norms of the organizations. This crucial drawback of hard methodologies motivated the study of vendor selection issue from another perspective, using a soft thinking approach. Furthermore, Cognitive Map is used to model knowledge and experience of all beneficiaries and combine their mental maps in designing the solution of vendor selection problem. In this study, using the combination of cognitive mapping and SSM, based on a distinctive research approach, namely Action Research, the fundamental factors of an issue were identified to make it possible to combine the views of different experts to reach consensus among several attitudes for choosing the best vendor. The methodology proposed in this study was applied for vendor selection process in National Iranian South Oil Company (NISOC) as a case study.

The Effect of 10 Weeks Resistance Training on Cholesterol and Blood Triglyceride Levels of Patients with Fatty Liver Disease.

ABSTRACTThe present study aims to consider the effect of 10 weeks resistance trainings on cholesterol and blood triglyceride (TG) levels of patients with having fatty liver, aged 50 to 60 in National Iranian South Oil Company (NISOC). This research is practical and its plan has been done experimentally with pretest and post-test on experimental and control groups. In this study, 20 samples from 100 patients who referred to sonography clinic in NISOC with distinction of fatty liver were selected randomly and divided into two groups of control (n = 10) and experimental (n = 10). Cholesterol and blood trigly-ceride were measured as pretest. Test of normality for TG was (p = 0/200) by Kolmogorov-Smirnov and (p = 0/070) for cholesterol by Shapiro-Wilk test. After 10 weeks resistance trainings, the analysis and resolution of data were done by computer and SPSS (16) software as well as the descriptive and statistical methods (t-test). Comparison between these two groups showed that 8 weeks resistance trainings with a ≤ 0.05 causes significant decrease in the amount of TG but did not any significant effect on cholesterol of fatty liver patients.How to cite this article: Valizadeh R, Askarabadi SH, Karampour S, Tehrani MA. The Effect of 10 Weeks Resistance Training on Cholesterol and Blood Triglyceride Levels of Patients with Fatty Liver Disease. Euroasian J Hepato-Gastroenterol 2014;4(1):64-65.

Studying Knowledge Commercialization

Research ideas and findings of learners can be led to wealth creation, entrepreneurship and finally development and economic and social welfare. In order to realize knowledge commercialization it is necessary to determine the constituent processes, methods and factors to be used in decision-making for commercialization. Knowledge commercialization in engineering and construction management of national Iranian south oil company was studied in this survey in viewpoint of some effective inter-organizational factors on it including role of senior management, market centrality and customer focus, participation and interaction, intellectual property management and role of individual factors. The survey was conducted using descriptive-field method and the statistical population consisted of management experts and researchers. Simple random sampling was conducted and researcher self-made questionnaire was tool of data collection. Statistical tests like t-test and Kolmogoroff-Smirnoff test were used for data analysis. Results indicate engineering and construction management has knowledge commercialization and role of individual factors in Friedman ranking test has the highest potential. Participation and interaction, intellectual property management, role of senior management and market centrality and customer focus are the next factors.

Experimental investigation of sand consolidation techniques: resin injection and in-situ combustion

This paper demonstrates two sand control techniques that could overcome the technical limitations associated with the sand production phenomenon in Ahwaz oil field (in the southwest of Iran). The techniques are based on the consolidation process with resins and the oxidation of hydrocarbons. In this work, unconsolidated sand packed models of cylindrical geometry were utilised in order to perform a series of experiments during which various controlling parameters (compressive strength, permeability, and porosity) were investigated. The results showed that for consolidation process with resins, it was possible to produce consolidated sand samples with compressive strength between 740 and 1,330 psi; permeability between 3,000 and 4,100 md, and porosity between 27% and 34.5%. In contrast, for in-situ combustion technique, compressive strength between 580 and 1,040 psi, permeability between 3,100 and 5,100 md, and porosity between 23% and 42% were obtained. At the end, it is concluded that the consolidation process with epoxy resin (ML 503) is the most efficient method according to National Iranian South Oil Company standards. However, for field scale applications an economical proof is needed.

The Effects of Aerobic Exercise on Pulmonary Indexes in Obese Women from Iran

Background: The aim of this research was to assess effect of8 weeks aerobic exercise on pulmonary indexes of force vitalcapacity (FVC) and force expiratory volume in one second(FEV1) in obese women.Methods: Initially, a total 200 women of National Iranian SouthOil Company (name of the place) were enrolled in this study.Subsequently, 40 women with body mass index ranging from25 to 29.9 were selected as study population. The studypopulation was devided in 2 groups, each with 20 women. Onegroup (experimental group) performed aerobic exercise for 8weeks and the other group did not perform any specific physicalexercise. FVC and FEV1 were measured in all subjects beforethe commencement of the study and after the end of the study.Results: The age of the subjects ranged from 40 to 50 years.There was no significant difference in values of FVC and FEV1between experimental study population and control group atstart of the study. However, the levels of both FVC and FEV1increased significantly in experimental group compared tocontrol group.Discussion: Aerobic exercise seems to have an effect onpulmonary function of obese Iranian female.Abbreviations: FVC: Force vital capacity; FEV1: Force expiratoryvolume in one second; BMI: Body mass index; MHR: Maximumheart rate; NICOS: National Iranian South Oil Company.

C–S Targeted Biodegradation of Dibenzothiophene by Stenotrophomonas sp. NISOC-04

Crude oil-contaminated soil samples were gathered across Khuzestan oilfields (National Iranian South Oil Company, NISOC) consequently experienced a screening procedure for isolating C-S targeted dibenzothiophene-biodegrading microorganisms with previously optimized techniques. Among the isolates, a bacterial strain was selected due to its capability of biodegrading dibenzothiophene in a C-S targeted manner in aqueous phases and medium mostly consisting of separately biphasic water-gasoline. The 16S rDNA of the isolate was amplified using eubacterial-specific primers and then sequenced. Based on sequence data analysis, the microorganism, designated NISOC-04, clustered most closely with the members of the genus Stenotrophomonas. Gas chromatography indicated that Stenotrophomonas sp. NISOC-04 utilizes 82% of starting 0.8 mM dibenzothiophene within a 48-h-long exponential growth phase. Growth curve analysis revealed the inability of Stenotrophomonas sp. NISOC-04 to utilize dibenzothiophene (DBT) as the exclusive carbon or carbon/sulfur source. Gibbs' assay showed no 2-hydroxy biphenyl accumulation, but HPLC confirmed the presence of 2-hydroxy biphenyl as the final product of DBT desulfurization. Under sulfur starvation, Stenotrophomonas sp. NISOC-04 produced a huge biomass with untraceable sulfur and utilized atmospheric insignificant sulfur levels.

The effect of eight weeks aerobic exercise in swimming pool on the mental health of men personnel of NISOC

Depression and anxiety are disorders that between 9 to 26 percent of women and 5 to 12 percent of men have complained them (Robin, 1984).So the aim of this research was the examination of The effect of eight weeks aerobic exercise of run in swimming pool on the mental health (Physical complaint, Anxiety, Disorder in Social adequacy, Depression) of men personnel of National Iranian South Oil Company(NISOC). This is a semi experimental study that has been done by experimental and control groups. For evaluation of mental health the questionnaire GHQ-28 by (Cold Berg and Hiller, 1979) was used. In this research the population of research was all men personnel (n=500) (age 45-55) of NISOC. After their mental health evaluation with 1.5 upper standard deviation of (mean=51.73+12.95) 40 people was selected as statistical sample and divided randomly in two groups. Exercise program of experimental group was 30minutes running, 3 sessions per week with intensity of %60 to %70 of MHR (Gaszkow, 2004 & Netz, 2005). Statistical analyze ion of data has been done by computer and SPSS program with the use of (T-test) statistical method. The findings show that aerobic exercise of run in swimming pool has a significant positive effect on mental health and all it dimensions. So on basis of these results recommend to patients that they suffer than mental disorders do aerobic exercise in swimming pool as good treatment and reduce of pressure of these disorders.