Systematic approach for improving performance of progressive cavity pumping systems in a deep heavy oil reservoir
September 2011
A pragmatic and systematic technique has been developed to improve performance of the progressive cavity pumping system in a deep heavy oil reservoir where oil produces together with sand in an unconsolidated formation. More specifically, tapered thread has first been used to replace the conventional ones for strengthening the resistive torque of the entire string. The rotary anchor equipped with scalable slips is then...
A comparative study of predicted and actual pore pressures in Tripura, India
September 2011
Past well drilled data in Tripura Region confirmed the existence of super pressure regime below the Middle Bhuban formation. In most of the areas, Middle Bhuban is capped by the Tipam, Bokabil and Upper Bhuban formations. But on the top of the Atharamura anticline, it is exposed to the surface offering less sediment thickness and huge risk for drilling. Exposure of Middle Bhuban escalates the...
Biodiesel production from Jatropha caucus oil in a batch reactor using zinc oxide as catalyst
September 2011
This paper presents the effect of different factors that affect the conversion of Jatropha caucus (JCO) oil to biodiesel and the optimum conditions in a batch reactor using Zinc oxide as catalyst. Four replicate transesterification experimental runs were carried out for each of the mixing duration 25, 50, 75, and 100 min under different typical...
Agricultural waste plastics conversion into high energy liquid hydrocarbon fuel by thermal degradation process
August 2011
For worldwide cultivation purposes farmers use numerous plastics. To cultivate watermelon, grapes, pumpkin, cucumber, potatoes, etc. they use polyethylene poly bags or polyethylene sheets. Polyethylene poly bags parts and polyethylene sheets are used to protect Crops from adverse situation such as natural disaster, muddy water and some external parasites insects. After that, the used plastics become...
Heavy oil spill cleanup using law grade raw cotton fibers: Trial for practical application
August 2011
Crude oil released to the marine environment through accidental spillage or drainage from land causes serious damage to the environment and marine life. Treatment of oil spills remains a challenge to environmental scientists and technologists. Sorption is a popular technique applied for treatment of oil spillage. In this paper, the potential of raw law value cotton fibers, to remove used oil was investigated...
Determination of the catalytic converter performance of bi-fuel vehicle
July 2011
The reduction of pollutant emission from spark ignition engines is desirable in order to reduce the highly impact on the green environment, produced from transport release like trains, trucks, traveler vehicles and others. However, modern vehicles are equipped with catalytic converters. A bi-fuel vehicle that has been retrofitted for both fuel systems: namely, compressed natural gas (CNG) and base fuel...
Power transfer analysis of a hybrid fuel cell/battery as portable power source generator
July 2011
The configuration of hybrid power system (HPS) are widely used and accepted in providing a stable and higher power capability sources in generating energy for human needs. Hybrid configuration is composed of at least two generating sources combined to produce larger supply of energy. The advantages of using hybrid configuration are distinctively beneficial. It reduces the stress on each source and decreases...
Technical and economical feasibility analysis of energy generation though the biogas from waste in landfill
June 2011
Biogas from wastes in landfill can reduce the dependence on fossil fuels, beyond finding solutions that are environmentally sustainable to collaborate with the energy matrix of the countries. The intensification of human and industrial activities in the last few decades has generated increase in the production of municipal solid wastes (MSW), becoming a serious problem for the society. Furthermore, the uses...
An energy saving program for Bangladesh
June 2011
In spite of the ongoing depletion of fossil fuel and rise in fuel prices, there has been insufficient effort worldwide towards saving energy and maximizing use of remaining fuel reserves. In Bangladesh, electricity shortages cause power disruptions for much of the day and allow electricity distribution to only a fraction of the population. Such load sheddings cause interruptions in manufacturing, commerce, irrigation,...
Jatropha oil production and an experimental investigation of its use as an alternative fuel in a DI diesel engine
May 2011
In this study, a non-edible vegetable oil was produced from jatropha fruits as a substitute fuel for diesel engines and its usability was investigated as pure oil and as a blend with petroleum diesel fuel. A direct injection (DI) diesel engine was tested using diesel,Jatropha oil, and blends of Jatropha oil and diesel in different proportions. A wide range of engine loads...
Effect of properties of Karanja methyl ester on combustion and NOx emissions of a diesel engine
May 2011
The aim of this work is to study the effect of properties of Karanja (Pongamia pinnata) methyl ester on combustion, and NOx (oxides of nitrogen) emissions of a diesel engine. The properties of the karanja methyl ester such as viscosity, density, bulk modulus, calorific value, iodine value, cetane number, saturation% and oxygen% are considered for this study. Experiments were conducted in a naturally...
Conversion of methanol to hydrocarbons on cobalt and lanthanum catalysts
April 2011
γ-Alumina supported cobalt (4 wt%) and cobalt-lanthanum with different lanthanum content (2,4 and 6 wt%) have been used as catalysts for methanol conversion. The catalysts were physically characterized using: X-ray diffraction technique, hydrogen temperature programmed reduction (TPR) and BET surface area measurements. The results established the formation of Co3O4 and LaCoO3 oxide phases. The...
Facies characterisation of Well A, Field Y, North-Eastern Niger Delta
April 2011
The facies characteristics of Well A in the Field Y were studied using wireline log signatures and data derived from them and cores. The lithostratigraphy, facies types which helped in the interpretation of the depositional environments and their characteristics were read from the wireline logs. The logs were environmentally corrected and normalized. The core data analysis helped in confirming the properties...
Physico-chemical properties of bio-ethanol/gasoline blends and the qualitative effect of different blends on gasoline quality and engine performance
March 2011
Physico-chemical and operational properties of various gasoline bio-ethanol blends were evaluated. Bio-ethanol was obtained through distillation from maize (Zea mays), sugar cane (Saccharum L), raffia (Raffia vinefera) wine, and palm wine and then purified using a rotavapor. Engine trails involved combinations of various ratios of gasoline/bio-ethanol as fuel in a small unmodified gasoline...
Evidence of a Miocene volcano-sedimentary lithostratigraphic sequence at Ngwa (Dschang Region, West Cameroon): Preliminary analyses and geodynamic interpretation
March 2011
The Ngwa sedimentary sequence is situated on the southern flank of the Bambouto volcano. Analysis of petrography, lithostratigraphy, mineralogy, morphology and morphometry enabled the reconstruction and interpretation of their stratigraphic architecture, depositional and paleogeographic setting, the origin of the sediments and the geological history of this region. The lithostratigraphic sequence of the...
Renewable fuel saving obligation; innovative mechanism for emission reduction
February 2011
All energy requirements of human beings can be broadly fulfilled through electricity (power) and fuels. Many governments including Government of India have taken policy measures to make renewable power component as legally binding to power producers through renewable power obligations. Under these laws, power distribution companies have to buy renewable power as fixed percentage of the total power...
Biofuel: Boon or bane
January 2011
Biofuels are going to play an extremely important role in meeting India’s energy needs. The country's energy demand is expected to grow at an annual rate of 4.8% over the next couple of decades. Most of the energy requirements are currently satisfied by fossil fuels – coal, petroleum-based products and natural gas. Domestic production of crude oil can only fulfill 25 to 30% of national...
Continuous ethanol production by Kluyveromyces sp. IIPE453 immobilized on bagasse chips in packed bed reactor
January 2011
Continuous ethanol production eliminates much of the unproductive down-time associated with batch process and increases the productivity. Many studies showed that the cell immobilization leads to improve fermentation rates by the high cell concentrations, option of reusability and protection of cells from toxic effects of low pH, temperature, inhibitors, etc. The thermotolerant...
Petroleum cuts as solvent extractor for oil recovery from petroleum sludge
November 2010
Petroleum cuts were used as solvents to recover oil from dry and semi dry petroleum sludge. The effects of various parameters, namely shaking time, temperature and the solvent volume upon oil recovery were investigated. Within the range of the studied operating conditions herein, the maximum oil recovery obtained varied from 80 - 97% depending upon the amount of oil within the sludge and the solvent...
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