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  1. Fulltext Effect of nanoparticles concentration on electromagnetic-assisted oil recovery using ZnO nanofluids
    Adil M, Lee K, Mohd Zaid H, A Shukur MF, Manaka T
    PLoS One, 2020;15(12):e0244738.
    PMID: 33382855 DOI: 10.1371/journal.pone.0244738
    Utilization of metal-oxide nanoparticles (NPs) in enhanced oil recovery (EOR) has generated substantial recent research interest in this area. Among these NPs, zinc oxide nanoparticles (ZnO-NPs) have demonstrated promising results in improving oil recovery due to their prominent thermal properties. These nanoparticles can also be polarized by electromagnetic (EM) field, which offers a unique Nano-EOR approach called EM-assisted Nano-EOR. However, the impact of NPs concentrations on oil recovery mechanism under EM field has not been well established. For this purpose, ZnO nanofluids (ZnO-NFs) of two different particle sizes (55.7 and 117.1 nm) were formed by dispersing NPs between 0.01 wt.% to 0.1 wt.% in a basefluid of sodium dodecylbenzenesulfonate (SDBS) and NaCl to study their effect on oil recovery mechanism under the electromagnetic field. This mechanism involved parameters, including mobility ratio, interfacial tension (IFT) and wettability. The displacement tests were conducted in water-wet sandpacks at 95˚C, by employing crude oil from Tapis. Three tertiary recovery scenarios have been performed, including (i) SDBS surfactant flooding as a reference, (ii) ZnO-NFs flooding, and (iii) EM-assisted ZnO-NFs flooding. Compare with incremental oil recovery from surfactant flooding (2.1% original oil in place/OOIP), nanofluid flooding reaches up to 10.2% of OOIP at optimal 0.1 wt.% ZnO (55.7 nm). Meanwhile, EM-assisted nanofluid flooding at 0.1 wt.% ZnO provides a maximum oil recovery of 10.39% and 13.08% of OOIP under EM frequency of 18.8 and 167 MHz, respectively. By assessing the IFT/contact angle and mobility ratio, the optimal NPs concentration to achieve a favorable ER effect and interfacial disturbance is determined, correlated to smaller hydrodynamic-sized nanoparticles that cause strong electrostatic repulsion between particles.
    Matched MeSH terms: Oil and Gas Industry*
  2. Validating the effects of the environmental regulation compliance scale: evidence from the Nigerian oil and gas industry
    Ya'u A, Saad N, Mas'ud A
    Environ Sci Pollut Res Int, 2021 Mar;28(11):13570-13580.
    PMID: 33188515 DOI: 10.1007/s11356-020-11608-z
    Growing environmental deterioration has caused many countries to tighten their environmental regulations across the globe. Recent studies show that most developed countries enforced stricter environmental regulations creating a pollution haven to developing countries such as Nigeria. Studies show the non-availability of an environmental regulation compliance scale in the energy sectors. The aim of this paper is to validate the effects of environmental regulation compliance scale for oil and gas companies' operations in the Nigerian oil and gas industry. Hence, an adapted questionnaire comprising 11 items was administered to 300 local and multinational oil and gas companies in Nigeria. All the items were subjected to evaluations and validations by eight expert reviewers with cognate experience in oil and gas activities. Evaluation of the reliability and validity of the measures of the environmental regulation scale was performed through confirmatory factor analysis (CFA) using SPSS version 25 and PLS-SEM version 3.8. The results provide evidence that the environmental regulation compliance scale has met the reliability and validity criteria. Consequently, policymakers, practitioners, and researchers can adapt this scale to assess the effects of environmental regulation compliance by companies in different jurisdictions across the globe. This study undoubtedly builds the existing literature and contributes to the subject area; by implication, the validated scale will assist host oil and gas countries with stringent environmental regulations to come up with policies in such a way as to ensure not chasing away the current investors or discouraging prospective ones from investing in their countries.
    Matched MeSH terms: Oil and Gas Industry*
  3. The efficacy of sustainability reporting towards cost of debt and equity reduction
    Shad MK, Lai FW, Shamim A, McShane M
    Environ Sci Pollut Res Int, 2020 Jun;27(18):22511-22522.
    PMID: 32319056 DOI: 10.1007/s11356-020-08398-9
    This paper empirically investigates the impact of overall sustainability reporting as well as its components (economic, environmental, and social sustainability reporting) on the cost of debt and equity capital for Malaysian oil and gas companies. The data was collected from 41 publicly listed oil and gas companies in Malaysia for the period from 2008 to 2017. Qualitative information was gathered for sustainability reporting and then converted into quantitative form by assigning weights according to the extent of reporting. The cost of capital information was sourced through Thomson Reuters Datastream. Panel data analysis was employed using generalized least square (GLS) random effects regression to examine the relationship between sustainability reporting and cost of capital. Firm reputation, size, and profitability were included as control variables. The findings indicate that overall sustainability reporting and one component, economic sustainability reporting, reduce both cost of debt and cost of equity. However, environmental sustainability reporting reduces only the cost of debt but does not reduce the cost of equity. Social sustainability reporting shows no effect on the cost of debt or equity. The findings of this paper should be useful for regulators, legislators, shareholders, creditors, and practitioners in pursuing sustainability practices that not only improve economic and environmental performance but also enhance overall performance by reducing the cost of capital. The results of the paper highlight that companies investing in sustainability can generate positive value through the enhancement of reputational capital. This study is the first to empirically investigate the relationship between overall sustainability reporting, including its three components, and the cost of both debt and equity capital.
    Matched MeSH terms: Oil and Gas Industry*
  4. Fulltext Recent Advances of Graphene-Derived Nanocomposites in Water-Based Drilling Fluids
    Ikram R, Mohamed Jan B, Vejpravova J, Choudhary MI, Zaman Chowdhury Z
    Nanomaterials (Basel), 2020 Oct 11;10(10).
    PMID: 33050617 DOI: 10.3390/nano10102004
    Nanocomposite materials have distinctive potential for various types of captivating usage in drilling fluids as a well-designed solution for the petroleum industry. Owing to the improvement of drilling fluids, it is of great importance to fabricate unique nanocomposites and advance their functionalities for amplification in base fluids. There is a rising interest in assembling nanocomposites for the progress of rheological and filtration properties. A series of drilling fluid formulations have been reported for graphene-derived nanocomposites as additives. Over the years, the emergence of these graphene-derived nanocomposites has been employed as a paradigm to formulate water-based drilling fluids (WBDF). Herein, we provide an overview of nanocomposites evolution as engineered materials for enhanced rheological attributes in drilling operations. We also demonstrate the state-of-the-art potential graphene-derived nanocomposites for enriched rheology and other significant properties in WBDF. This review could conceivably deliver the inspiration and pathways to produce novel fabrication of nanocomposites and the production of other graphenaceous materials grafted nanocomposites for the variety of drilling fluids.
    Matched MeSH terms: Oil and Gas Industry
  5. Recent applications of ultrasonic waves in improved oil recovery: A review of techniques and results
    Hamidi H, Sharifi Haddad A, Wisdom Otumudia E, Rafati R, Mohammadian E, Azdarpour A, et al.
    Ultrasonics, 2021 Feb;110:106288.
    PMID: 33142226 DOI: 10.1016/j.ultras.2020.106288
    Ultrasound technique is an inexpensive and ecofriendly technology commonly used in oil and gas industry to improve oil recovery and its applications have been successfully tested in both laboratory and field scales. In this technique, high-power ultrasonic waves are utilized downhole to improve oil recovery and reduce formation damage in near wellbore region that causes a reduction in hydrocarbon production rate due to the penetration of mud, scale deposition, etc. In most of the cases, barriers for the oil flow to the wellbore are effectively removed by using the ultrasound technique and the effect of improved oil recovery may last up to several months. The aim of this paper is to provide an overview of recent laboratory, field and mathematical studies to serve as reference for future extensive examination of ultrasound assisted improved oil recovery. As an added value to this field of study, research gaps and opportunities based on the review of recent works were identified and factors that needs to be considered to improve the outcome of future studies were recommended.
    Matched MeSH terms: Oil and Gas Industry
  6. Commitment to and preparedness for sustainable supply chain management in the oil and gas industry
    Wan Ahmad WN, Rezaei J, Tavasszy LA, de Brito MP
    J Environ Manage, 2016 Sep 15;180:202-13.
    PMID: 27233046 DOI: 10.1016/j.jenvman.2016.04.056
    Our current dependency on the oil and gas (O&G) industry for economic development and social activities necessitates research into the sustainability of the industry's supply chains. At present, studies on sustainable supply chain management (SSCM) practices in the industry do not include firm-internal factors that affect the sustainability strategies employed by different functional areas of its supply chains. Our study aims to address this gap by identifying the relevant internal factors and exploring their relationship with SSCM strategies. Specifically, we discuss the commitment to and preparedness for sustainable practices of companies that operate in upstream and downstream O&G supply chain. We study the impact of these factors on their sustainability strategies of four key supply chain functions: supplier management, production management, product stewardship and logistics management. The analyses of data collected through a survey among 81 companies show that management preparedness may enhance sustainable supply chain strategies in the O&G industry more than commitment does. Among the preparedness measures, management of supply chain operational risks is found to be vital to the sustainability of all supply chain functions except for production management practices. The findings also highlight the central importance of supplier and logistics management to the achievement of sustainable O&G supply chains. Companies must also develop an organizational culture that encourages, for example, team collaboration and proactive behaviour to finding innovative sustainability solutions in order to translate commitment to sustainable practices into actions that can produce actual difference to their SSCM practices.
    Matched MeSH terms: Oil and Gas Industry*
  7. Physical ergonomics awareness in an offshore processing platform among Malaysian oil and gas workers
    M Noor MHH, Raja Ghazilla RA
    Int J Occup Saf Ergon, 2020 Sep;26(3):521-537.
    PMID: 29792568 DOI: 10.1080/10803548.2018.1480341
    Introduction. The reliability of offshore oil and gas (O&G) facilities depends on the operation and maintenance activities, where human physical intervention is involved. Workers are often exposed to ergonomics hazards due to inefficient workplace design. Ergonomics awareness among workers is a crucial factor in mitigating such hazards. Objectives. This study intends to evaluate the state of physical ergonomics awareness among Malaysian O&G workers and to assess their perception toward the criticality of physical ergonomics issues within an offshore processing facility. Methods. Data were collected through online questionnaire distribution. The respondents were required to evaluate three sections of the questionnaire to reflect their state of physical ergonomics awareness: design criteria in an offshore workplace that are related to physical ergonomics; effects of physical ergonomics implementation in design; criticality of physical ergonomics issues. Results. The results showed a good level of physical ergonomics awareness among respondents without them being influenced by dissimilar experiences (engineering design and operation/maintenance) and the range of experience in an offshore workplace. Conclusion. This study provides an overview of Malaysian O&G workers' outlook toward the physical ergonomics issues in an offshore workplace. These data could be further analyzed in future as relevant aspects of designing an offshore facility.
    Matched MeSH terms: Oil and Gas Industry*
  8. Financial development and oil resource abundance-growth relations: evidence from panel data
    Law SH, Moradbeigi M
    Environ Sci Pollut Res Int, 2017 Oct;24(28):22458-22475.
    PMID: 28803332 DOI: 10.1007/s11356-017-9871-y
    This study investigates whether financial development dampens the negative impact of oil resource abundance on economic growth. Because of substantial cross-sectional dependence in our data, which contain a core sample of 63 oil-producing countries from 1980 through 2010, we use the common correlated effect mean group (CCEMG) estimator to account for the high degree of heterogeneity and drop the outlier countries. The empirical results reveal that oil resource abundance affects the growth rate in output contingent on the degree of development in financial markets. More developed financial markets can channel the revenues from oil into more productive activities and thus offset the negative effects of oil resource abundance on economic growth. Thus, better financial development can reverse resource curse or enhance resource blessing in oil-rich economies.
    Matched MeSH terms: Oil and Gas Industry/economics*
  9. Fulltext The Moderating Effects of Social Media Activities on the Relationship Between Effort-Reward Imbalance and Health and Wellbeing: A Case Study of the Oil and Gas Industry in Malaysia
    Kanwal N, Isha ASN
    Front Public Health, 2022;10:805733.
    PMID: 35372179 DOI: 10.3389/fpubh.2022.805733
    BACKGROUND: Social media activities affect every aspect of human life, be it personal, social or professional. Previous studies have confirmed the role of social media in affecting health in terms of releasing stress and providing social support. Increased occupational health disorders and increased time spent on social media activities motivate us to investigate this phenomenon in the context of occupational health. Therefore, the objective of this study is to measure the effects of social media activities related to personal and social life as well as work-life on health and wellbeing of office employees, on their job efforts and job rewards, and in moderating the effect of effort-reward imbalance on health and wellbeing.

    METHODS: Initially, to develop constructs related to social media activities, web-based structured interviews were conducted with five office employees working in the oil and gas industry for the last 5 years. Then, using an online questionnaire survey, data was collected from 424 office employees working in the oil and gas industry in Malaysia. Using statistical software for social science (SPSS) and Smart PLS, exploratory factor analysis and confirmatory factor analysis were conducted to identify reliability and validity (discriminant validity, convergent validity and composite validity) of the constructs. Following this, path analysis was conducted and the moderating effects were identified.

    RESULTS: Social media activities related to work-life decrease health and wellbeing by 11% and weaken the negative effect of effort-reward-imbalance on health and wellbeing by 17.6% at a 1% level of significance. The results of social media activities related to personal and social life strengthen the negative effect of effort-reward imbalance on health and wellbeing by 12% and negatively affects health and wellbeing and job rewards by 13, 55%, respectively. The direct effect of effort-reward imbalance and job efforts is significantly negative on health and wellbeing by 59 and 10%, respectively.

    CONCLUSION: It is concluded that social media activities of the office employees significantly moderate the effect of effort-reward imbalance on health and wellbeing and intervene in job rewards in the organizations. Hence, the effect of social media activities reduces the health and wellbeing of office employees.

    Matched MeSH terms: Oil and Gas Industry*
  10. Decoding stakeholder priorities of safety culture preferences in the oil and gas industry
    Rahim H, Dapari R, Che Dom N, Mohd Noor MI
    Sci Rep, 2024 Sep 05;14(1):20735.
    PMID: 39237550 DOI: 10.1038/s41598-024-71294-6
    Safety culture is a critical determinant of organisational performance, particularly in high-risk industries especially in oil and gas. Understanding stakeholder preferences is essential for developing effective strategies that enhance safety culture. This study utilised the Analytic Hierarchy Process (AHP) to prioritise stakeholder preferences, identifying key elements of safety culture in Malaysia's oil and gas sector. This study employed a structured methodology to evaluate safety culture within the oil and gas industry, focusing on 18 sub-elements across three key domains: psychological, behavioural, and situational factors. A diverse sample of industry experts was recruited using purposeful and snowball sampling to ensure a comprehensive representation of stakeholder views. The AHP framework was applied to analyse the data, utilizing structured questionnaires and multicriteria decision-making techniques to prioritize the identified safety culture elements. The AHP analysis identified distinct priorities among different professional groups within the oil and gas sector. Safety and Health Practitioners emphasized practical elements such as safety rules and management commitment, while academicians prioritized knowledge and training. Management personnel highlighted the importance of safety ownership and communication, whereas policymakers focused on broader, policy-oriented aspects. The findings suggest that safety culture improvement initiatives should be tailored to address the specific needs and priorities of each professional group. A nuanced understanding of stakeholder preferences is crucial for developing comprehensive strategies that integrate observable behaviours, situational conditions, and psychological factors, ultimately fostering a robust safety culture in the oil and gas industry.
    Matched MeSH terms: Oil and Gas Industry*
  11. Fulltext Giant Magnetoresistance Sensors: A Review on Structures and Non-Destructive Eddy Current Testing Applications
    Rifai D, Abdalla AN, Ali K, Razali R
    Sensors (Basel), 2016;16(3):298.
    PMID: 26927123 DOI: 10.3390/s16030298
    Non-destructive eddy current testing (ECT) is widely used to examine structural defects in ferromagnetic pipe in the oil and gas industry. Implementation of giant magnetoresistance (GMR) sensors as magnetic field sensors to detect the changes of magnetic field continuity have increased the sensitivity of eddy current techniques in detecting the material defect profile. However, not many researchers have described in detail the structure and issues of GMR sensors and their application in eddy current techniques for nondestructive testing. This paper will describe the implementation of GMR sensors in non-destructive testing eddy current testing. The first part of this paper will describe the structure and principles of GMR sensors. The second part outlines the principles and types of eddy current testing probe that have been studied and developed by previous researchers. The influence of various parameters on the GMR measurement and a factor affecting in eddy current testing will be described in detail in the third part of this paper. Finally, this paper will discuss the limitations of coil probe and compensation techniques that researchers have applied in eddy current testing probes. A comprehensive review of previous studies on the application of GMR sensors in non-destructive eddy current testing also be given at the end of this paper.
    Matched MeSH terms: Oil and Gas Industry
  12. Fulltext Performance Analysis of Blended Membranes of Cellulose Acetate with Variable Degree of Acetylation for CO2/CH4 Separation
    Raza A, Farrukh S, Hussain A, Khan I, Othman MHD, Ahsan M
    Membranes (Basel), 2021 Mar 29;11(4).
    PMID: 33805339 DOI: 10.3390/membranes11040245
    The separation and capture of CO2 have become an urgent and important agenda because of the CO2-induced global warming and the requirement of industrial products. Membrane-based technologies have proven to be a promising alternative for CO2 separations. To make the gas-separation membrane process more competitive, productive membrane with high gas permeability and high selectivity is crucial. Herein, we developed new cellulose triacetate (CTA) and cellulose diacetate (CDA) blended membranes for CO2 separations. The CTA and CDA blends were chosen because they have similar chemical structures, good separation performance, and its economical and green nature. The best position in Robeson's upper bound curve at 5 bar was obtained with the membrane containing 80 wt.% CTA and 20 wt.% CDA, which shows the CO2 permeability of 17.32 barrer and CO2/CH4 selectivity of 18.55. The membrane exhibits 98% enhancement in CO2/CH4 selectivity compared to neat membrane with only a slight reduction in CO2 permeability. The optimal membrane displays a plasticization pressure of 10.48 bar. The newly developed blended membranes show great potential for CO2 separations in the natural gas industry.
    Matched MeSH terms: Oil and Gas Industry
  13. Fulltext The presence of 60Co in solid wastes from crude oil production industry
    Omar, M., Laili, Z.
    Journal of Nuclear and Related Technologies, 2008;2008(1):81-83.
    MyJurnal
    Thirteen solid waste samples labeled as scales were collected from a storage area of a crude oil production industry and were analysed for radionuclides concentrations. The radium-226 and radium- 228 concentrations were found to be unexpectedly low, i.e. less than 20 Bqkg. However, six samples were found to contain 7 to 2240 Bq/kg 60 Co. Thus, besides naturally occurring radionuclides, there is a possibility to find artificial radionuclides in solid wastes from crude oil production industry.
    Matched MeSH terms: Oil and Gas Industry
  14. Fulltext The relationship between employee satisfaction and loyalty: a cross-sectional study in oil and natural gas industry
    Uthyasuriyan, A., Talwar, P., Oon, Y.B., Rusli Ahmad
    Journal of Cognitive Sciences & Human Development, 2017;2(2):16-25.
    MyJurnal
    The global drop in oil and natural gas industry have had a significant impact on the
    Malaysian market and have potentially redirected Malaysia under a negative global
    spotlight. The layoff rate in oil and natural gas organizations have risen dramatically,
    this situation may affect the satisfaction level among employees and their loyalty in
    the respective oil and natural gas industry. The present study is aimed to determine the
    relationship between employee satisfaction and employee loyalty in Oil and Natural
    Gas Industry. Using simple random sampling technique 100 employees working in Oil
    and Natural Gas Industry were selected as respondents. Questionnaire was used for
    data collection. Results obtained showed that there is positive correlation between different
    components of employee satisfaction and employee loyalty. A notable variable
    that emerged in the analysis was compensation and benefits, while career development
    was least important that predisposed loyalty.
    Matched MeSH terms: Oil and Gas Industry
  15. Fulltext Reefing Viability Index for Rigs-to-Reefs (R2R) in Malaysia
    Mohd MH, Rahman MAA, Nazri MN, Tan CH, Mohamad Y, Lim CS, et al.
    ScientificWorldJournal, 2020;2020:4695894.
    PMID: 33223970 DOI: 10.1155/2020/4695894
    Decommissioning of the offshore platform as an artificial reef, known as Rigs-to-Reefs (R2R), has become a sustainable approach for oil companies. The platform was reused to serve the underwater ecosystem as an artificial reef for a new marine ecosystem which helps to tackle food security issue. This paper presents the findings of the formulation of the reefing viability index to recognize an offshore region that can be used for R2R projects within the South China Sea. The combined effects of spatial data, numerical modelling, and geographic system (GIS) are proposed to study the relationship of spawning ground coral reefs, diversity, and planula larvae in the process of colonization to establish a map of the reef potential environment. Coral connectivity and spawning behaviour were studied to determine the possible source of coral seedling released during the spawning season, twice a year. A geographic reef viability index was established consisting of seven parameters which are coral larval density, pelagic larval length, sea currents, temperature, chlorophyll-a, depth, and substrate availability. The ocean hydrodynamic model was designed to resemble the pattern of larval scattering. By using the simulations and rankings, there were 95 (21%) sites which could probably be used for in situ reefing, whereas 358 (79%) sites were likely ideal for ex situ reefing. Validation of the viability index was carried out using media footage assessment of remotely operated vehicle (ROV).
    Matched MeSH terms: Oil and Gas Industry/methods; Oil and Gas Industry/trends
  16. Fulltext Preventing Hydrate Adhesion with Magnetic Slippery Surfaces
    Ragunathan T, Xu X, Shuhili JA, Wood CD
    ACS Omega, 2019 Oct 01;4(14):15789-15797.
    PMID: 31592451 DOI: 10.1021/acsomega.9b01232
    Hydrate formation is a common challenge in the oil and gas industry when natural gas is transported under cold conditions in the presence of water. Coatings are one of the solutions that have shown to be a promising approach to address this challenge. However, this strategy suffers from the intrinsic existence of a solid-liquid interface causing a high rate of hydrate nucleation and high hydrate adhesion strength. This proof-of-concept study highlights the performance of a magnetic slippery surface to prevent hydrate adhesion at atmospheric pressure using tetrahydrofuran hydrates. The coating consisted of a hydrocarbon-based magnetic fluid, which was applied to a metal surface to create an interface that lowered the hydrate adhesion strength on the surface. The performance of these new surfaces under static and dynamic (under fluid flow) conditions shows that the magnetic coating gel can be a potential inhibitor for hydrate adhesion as it reduced the torque value after the formation of hydrates.
    Matched MeSH terms: Oil and Gas Industry
  17. Chitin nanocrystals based complex fluids: A green nanotechnology
    Kumar S, Foroozesh J
    Carbohydr Polym, 2021 Apr 01;257:117619.
    PMID: 33541647 DOI: 10.1016/j.carbpol.2021.117619
    Chitin biopolymer has received significant attention recently by many industries as a green technology. Nanotechnology has been used to make chitin nanocrystals (ChiNCs) that are rod-shaped natural nanomaterials with nanoscale size. Owing to the unique features such as biodegradability, biocompatibility, renewability, rod-shape, and excellent surface and interfacial, physiochemical, and thermo-mechanical properties; ChiNCs have been green and attractive products with wide applications specifically in medical and pharmaceutical, food and packaging, cosmetic, electrical, and electronic, and also in the oil and gas industry. This review aims to give a comprehensive and applied insight into ChiNCs technology. It starts with reviewing different sources of chitin and their extraction methods followed by the characterization of ChiNCs. Furthermore, a detailed investigation into various complex fluids (dispersions, emulsions, foams, and gels) stabilized by ChiNCs and their characterisation have been thoroughly deliberated. Finally, the current status including ground-breaking applications, untapped investigations, and future prospective have been presented.
    Matched MeSH terms: Oil and Gas Industry
  18. Fulltext Keberkesanan program keselamatan berasaskan tingkahlaku terhadap pencapaian keselamatan di industri minyak dan gas di Malaysia
    Halimatus Sakdiah, M., Krishna Gopal, R.
    Malaysian Journal of Community Health, 2010;16(2):36-46.
    MyJurnal
    Introduction: Behavioural-based safety (BBS) programme is an accident prevention programme emphasized on the aspect of unsafe behaviour, which considerably new in Malaysia. The oil and gas industry is among the industries in Malaysia that has successfully implemented and sustaining the programme. The aim of this study is to measure and evaluate the effectiveness of BBS towards the safety performance in the oil and gas industry in Malaysia that certainly has owned an outstanding safety performance.
    Methodology: A cross-sectional study using secondary data involving five indicators in the safety performance in the department of health, safety and environment (HSE) was performed at one of the oil and gas refinery companies in Malaysia. These indicators were chosen based on the frequency of its occurrence from January 2004 to December 2008.
    Result: The results of the study show the presence of a significant difference in the incidence rates of near misses (p=0.008) and medical treatment cases (p=0.035) before and after the implementation of BBS and a very strong negative relationship (r=-0.885) between the incidence rates of near-misses and the rates of BBS observations done. However, analysis on unsafe behaviour does not show a significant reduction from 2006 to 2008. Instead, a significant reduction was seen on equipments failure from year 2006 to 2007 (p=0.021) and 2006 to 2008 (p=0.032).
    Conclusion: The study has proven that the BBS is effective towards the reduction of the indicators in the safety performance, involving only the incidence rates of the nearmisses and the medical treatment cases. However, a very strong negative relationship only involves the incidence rate of near misses. A significant reduction was also seen on the occurrence of instrument failure, which is one of the root causes of near-misses. Although there is no significant reduction on thye unsafe behaviour, the reduction of equipment failure is expected to be related to the increase in the level of awareness and safe behaviour as a result of BBS implementation.
    Matched MeSH terms: Oil and Gas Industry
  19. Fulltext Identification of hazardous nature of well drilling operation with associated potential hazards at oil and gas extraction industries: an explanatory approach
    Muhammad Mujtaba Asad, Razali Hassan, Qadir Mehmood Soomro, Sherwani, F., Muhammad Aamir
    Journal of Occupational Safety and Health, 2016;13(2):85-92.
    MyJurnal
    This study illustrates about the most hazardous and risky activities associated with well drilling operation at on and offshore
    oil and gas drilling sites by adopting exploratory research design (quantitative leading to qualitative). In this study researcher has
    targeted three oil and gas industries each from Malaysia, Saudi Arabia and Pakistan for the identification of associated hazards
    and nature of hazardous activities faced by drilling crew during well drilling operation. Eighty (80) drilling crew members have
    been randomly selected for answering the survey questionnaire. Likewise, nine (09) drilling health and safety officials have been
    conveniently selected based on their safety expertise in oil and gas drilling field for semi structured in-depth interview. For analyzing
    quantitative findings descriptive statistical methods has been used. While for qualitative section thematic analysis approach has
    been utilized. Based on the findings, respondents from Malaysian oil and gas industries reported starting drilling activity as highly
    hazardous at onshore well drilling, while handling drilling pipe has been considered more hazardous activity at offshore domain.
    Similarly, in the context of Saudi Arabia, respondents highlighted that the handling drilling pipes are cause of major injuries at onshore
    well drilling site. Whereas drilling fluid preparation and coring process is considered harmful at offshore sites. In contrast, participant
    from Pakistan indicated coring process as a highly hazardous activity at on and offshore well drilling operation. According to overall
    results based on the participant response, oil and gas well drilling operation at onshore domain is considered more hazardous
    at Pakistani oil and gas industry as compare to other targeted industries with mean range 3.42. While for offshore well drilling,
    Malaysian industry is recorded highly hazardous as compare to others leading with mean value 3.39 and related with chemical and
    safety hazards in well drilling activities.
    Matched MeSH terms: Oil and Gas Industry
  20. Fulltext A hybrid multi objective cellular spotted hyena optimizer for wellbore trajectory optimization
    Biswas K, Nazir A, Rahman MT, Khandaker MU, Idris AM, Islam J, et al.
    PLoS One, 2022;17(1):e0261427.
    PMID: 35085239 DOI: 10.1371/journal.pone.0261427
    Cost and safety are critical factors in the oil and gas industry for optimizing wellbore trajectory, which is a constrained and nonlinear optimization problem. In this work, the wellbore trajectory is optimized using the true measured depth, well profile energy, and torque. Numerous metaheuristic algorithms were employed to optimize these objectives by tuning 17 constrained variables, with notable drawbacks including decreased exploitation/exploration capability, local optima trapping, non-uniform distribution of non-dominated solutions, and inability to track isolated minima. The purpose of this work is to propose a modified multi-objective cellular spotted hyena algorithm (MOCSHOPSO) for optimizing true measured depth, well profile energy, and torque. To overcome the aforementioned difficulties, the modification incorporates cellular automata (CA) and particle swarm optimization (PSO). By adding CA, the SHO's exploration phase is enhanced, and the SHO's hunting mechanisms are modified with PSO's velocity update property. Several geophysical and operational constraints have been utilized during trajectory optimization and data has been collected from the Gulf of Suez oil field. The proposed algorithm was compared with the standard methods (MOCPSO, MOSHO, MOCGWO) and observed significant improvements in terms of better distribution of non-dominated solutions, better-searching capability, a minimum number of isolated minima, and better Pareto optimal front. These significant improvements were validated by analysing the algorithms in terms of some statistical analysis, such as IGD, MS, SP, and ER. The proposed algorithm has obtained the lowest values in IGD, SP and ER, on the other side highest values in MS. Finally, an adaptive neighbourhood mechanism has been proposed which showed better performance than the fixed neighbourhood topology such as L5, L9, C9, C13, C21, and C25. Hopefully, this newly proposed modified algorithm will pave the way for better wellbore trajectory optimization.
    Matched MeSH terms: Oil and Gas Industry
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