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1652 articles for “soil-gas geochemistry”
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Studies on Development of a Super Adsorbent Polymer for the Removal of Nitrogenous Waste Products from Urine Samples and in Intestinal Fluid Simulator
Abstract: Introduction: Colonic dialysis (CD) has been proposed as an appropriate candidate for excretion of electrolytes, nitrogen waste products and excessive fluid using gastrointestinal (GI) tract. Methods: The GI environment simulated in terms of concentrations of nitrogenous waste products, electrolytes, temperature and pressure. In addition, 24-hour urine samples were obtained from 10 healthy adult volunteers. Adsorbing capacity of Super Adsorbent Polymer (SAP) evaluated in GI tract simulating system and urine samples. …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 1–7 Read article
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The Frequency and Transient Analyses of a High Voltage Bushing/Transformer Cascade
Abstract: This paper investigates the frequency characteristics and electromagnetic transients of a typical system composed of a high voltage bushing and a power transformer connected in cascade. Detailed distributed-parameter Laplace-domain models are adopted for the digital simulations. These parameters include, among others, the transformer winding’s series inductance, its capacitance to ground and the inter-turn capacitances. Moreover, the number, the geometrical data of the capacitively-graded bushing’s conducting foils and the dielectric insulating …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 42–53 Read article
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A Contribution to the Frequency and Transient Analysis of High Voltage Bushings
Abstract: The paper suggests a method for determining the frequency characteristics and transient response of capacitively graded high voltage bushings. It is based on an s-domain circuit model that describes the grading conducting foils and the insulating layers. In most cases, they are of different axial lengths. A system of simultaneous differential and algebraic equations is derived taking these differences into account. Its closed-form solution, subject to the boundary conditions, can …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 15–26 Read article
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Design and Analysis of a 100 kWp Grid Connected PV Solar Plant at a Coastal Area of Bangladesh
Abstract: In Bangladesh, the usage of electricity is continuously increasing. Govt. is also trying to increase the electricity production by installing new power plants to meet the additional power demands. Most of the power plants are natural gas-based, coal-based or nuclear power-based. Considering the greenhouse effect; solar power plants could be one of the best solutions to meet the additional power demands as well as it has a lot of financial …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 3, 2021 · pp. 33–39 Read article
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Polysaccharide based Graft Copolymers and their Applications as Flocculants for Drilling Fluid Wastes
Abstract: Pure water is essential for the survival of living beings. It is used for human consumption, agricultural and industrial activities. During oil and gas well drillinglarge amount of drilling fluid are used. These drilling fluids are mainly water based bentonite solutions which plays a major role in keeping safe and efficient oil and gas well drilling. After their prolonged use, these drilling fluid wastes needs to be disposed of in …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 9–21 Read article
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PVT Analysis: Validity Checks and EOS Turning Techniques for Retrograde Condensate Reservoirs
Abstract: PVT analysis is pertinent to field-wide development and optimization. This is because we need to know the over-all behavior of the fluid from reservoir through production and process facilities, down to the refinery. Its emergence as a separate discipline has been supported by the development of modern computer software that utilize EOS models for simulating experiments and representing fluid phase behaviours. PVT simulations are carried out to determine operating conditions …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 44–53 Read article
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Comparative Study between Smart Controls and Conventional Bottom Hole Completions
Abstract: This research project made use of Schlumberger’s “ECLIPSE 100” reservoir simulator to predict the performance of a reservoir with an overlying gas cap and an underlying aquifer (i.e., a three- phase Water-Oil-Gas reservoir) under conventional BHC techniques. Additional work was done to ascertain the suitability of incorporating an Intelligent Well (IW) to deal with water production problem by placing Inflow Control Valves (ICV) at particular segments in the well to …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 3, 2016 · pp. 77–89 Read article
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Integration of Nano Ct and SEM in Study of Marcellus Shale Heterogeneity
Abstract: The increase in exploration and production in shale gas reservoir, and few studies so far reported regarding the general topology of tight reservoir, it is now imperative to critically understand the complexities surrounding the geology of shale reservoirs and its characterization. To understand the transport processes in any shale medium, we need to enhance our knowledge of the geometry and topology of the tight shale rock. The Marcellus Shale has …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 39–51 Read article
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Process Scheme for Effluent Treatment for Reinjection of Produced Water
Abstract: The scope of the study is to conceptualize a treatment process for produced water treatment and reinjection into reservoir for pressure support. ABC field is producing 800 m3/day, with 60% water cut. To access the suitability of using effluent water for reinjection in ABC field, produced water analysis and treated water parameters have been considered for conceptualizing the treatment design. Produced water analysis reveals its inferior quality in terms of …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 47–52 Read article
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Review of Subsea Pipeline for Minimizing Thermal and Pressure Expansion
Abstract: As the offshore oil and gas fields have been exploited in deeper water, subsea pipelines are required to operate at high temperatures and pressures. It causes subsea pipelines to be more subject to movements both in lateral and axial directions due to the loads produced by high temperatures and pressures. Some high temperature pipelines have experienced the cumulative axial displacement of an overall pipeline length over a number of start-up/shut-in …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 10–22 Read article
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Study on Effect of Insulation Design on Thermal-Hydraulic Analysis: An Important Aspect in Subsea Pipeline Designing
Abstract: The most imperative and challenging operational hazards for oil and gas pipelines are the risks associated with the transportation of fluids. When water, oil and gas flow simultaneously inside the pipeline, there are quite high chances that, water and hydrocarbon fluids can form and deposit hydrate such as wax and asphaltene on the inner surfaces of the pipeline and gradually blocking it. In this paper we explore and compare the …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 33–44 Read article
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A Potential Evaluation and Pilot Test of CO2 Miscible Injection in Daqing, China
Abstract: The paper introduces the entire process for a CO2 injection in the Fang-48 Group, Daqing Oilfield. A study using experiment and full-field reservoir modeling investigated and optimized the design of a CO2 miscible flooding project for Fang-48 Group, Daqing. The study began with extensive data gathering in the field and building a full-field three-dimensional geologic model. A full-field simulation model with relatively coarse gridding was subsequently built and used to …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 8–13 Read article
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Molecular Investigation of CO2 Solubility and Diffusion in Crude Oil
Abstract: It is important to know solubility and molecular diffusion coefficients of gas under reservoir CO2 Enhanced Oil Recovery. In this paper, a set complete device has been established to measure solubility and molecular diffusion coefficients of gas to improve the empirical formula and chart. Based on the experiment, molecular diffusion coefficients and solubility is evaluated, which provides the fundamental data to CO2 Enhanced Oil Recovery. The solubility vs. pressure linear …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 28–35 Read article
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An Overview of Recent Advances in Viscoelastic Surfactant based Fracturing Fluid Technology
Abstract: High percentages of oil and gas wells are hydraulically fractured worldwide in order to make economically producible at an efficient production rate. Cross-linked polymer fluids are in use for decades to stimulate oil and gas wells. Even though these fluids exhibit exceptional viscosity, thermal stability, proppant transportability and fluid leak-off control; extensive formation damage by polymer residues demanded a clean fracturing fluid technology. New generation of fracturing fluids based upon …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 11–25 Read article
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Biogas: Usefulness, existing technology and major hurdles
Abstract: There is strong scientific evidence that the average temperature of the earth’s surface is rising and this may be attribute to increased concentration of carbon dioxide (CO2), and other greenhouse gases (GHGs) in the atmosphere as released by burning fossil fuels. One of the chief sources of greenhouse gases is burning of fossil fuels. Biogas from biomass appears to have potential as an alternative energy source, which is potentially rich …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 2, 2020 · pp. 1–14 Read article
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Estimation of Drilling Waste Generation for Effective Waste Management
Abstract: Drilling operations remains the second generator of oil and gas waste after production activities. They are prominent among the primary sources of exploration and production waste. Wastes from drill cuttings and mud, and obnoxious gas emissions are the major contributors of these drilling wastes. These have direct and indirect impact on both humans and the environment. Poor estimation of waste may lead to solid and or liquid loadings at the …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 14–19 Read article
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Study of Crude Oil Degradation Using Bio-stimulant: The Concept of Remediation Application
Abstract: The Total Petroleum Hydrocarbon (TPH) degradation was monitored in a batch reactor with the addition of bio-stimulants of palm oil processed waste water (POPWW) and NPK fertilizer in contaminated clay soil medium. The comparative study on the performance of both bio-simulants revealed that the NPK fertilizer was more effective than the palm oil processed waste water (POPWW). This study is based on the overview on the degradation of petroleum hydrocarbon …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 13–23 Read article
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Vehicle Hybridization: Concept of future car engine by fuel – compressed air combination.
Abstract: Nowadays, Vehicle’s exhaust product is one of the sources of environmental problems in India. Their products of combustion are causing the greenhouse effect, depletion of Ozone layer, etc. On the other hand, a case study research on fossil fuel in the year 2004, predicts that if the oil is consumed at the current rates, 80% of the entire available resource will be consumed very soon. So now we need to …
Published in Journal of Production Research & Management · Vol. 8, Issue 3, 2018 · pp. 38–41 Read article
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Parametric Optimization of TIG Welding Process in Butt Joining of AISI 310 Austenitic Stainless Steel Materials
Abstract: Tungsten inert gas (TIG) welding is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. Selection of the levels of the input parameters plays a very significant role in determining the quality of a weld joint. The present study is planned to investigate effects of process parameters: welding current, gas flow rate and arc gap on ultimate tensile strength in TIG welding of austenitic stainless …
Published in Journal of Production Research & Management · Vol. 9, Issue 2, 2019 · pp. 12–19 Read article
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Planning Operations in Business Markets — Key Strategies and Applications
Abstract: Business buyers are those buyers who buy products either for resale or use those products to produce other goods and services, which they supply to their own customers in other markets. Market driven manufacturing companies are more focused on customers as they exhibit the ability to observe the market trends earlier than their competitors. These big firms such as industrial products’ manufacturers cum suppliers have several product divisions arranged according …
Published in Journal of Production Research & Management · Vol. 11, Issue 2, 2021 · pp. 43–57 Read article