Raffie Hosein

Raffie Hosein
University of the West Indies, St. Augustine | UWI · Department of Chemical Engineering, Petroleum Studies Unit

BSc, MPhil, PhD in Petroleum Engineering

About

45
Publications
14,624
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
132
Citations

Publications

Publications (45)
Article
The global shift toward environmentally friendly fuels has led to an increase in the usage of natural gas as an energy source. Natural gas is currently being produced from conventional gas reservoirs; however, there has been increased interest in the large repositories of highly compressed natural gas sequestered in gas hydrates. Well logs, as well...
Conference Paper
Enhanced oil recovery by steam injection requires the burning of natural gas, a finite and expensive resource for steam production. However, solar energy can be harnessed for steam production via solar parabolic troughs. In this study, the design and application of a solar parabolic trough, in tandem with a heat exchanger for producing steam for En...
Article
The identification of new oil fields onshore Trinidad and Tobago has become almost impossible. Therefore the possibility of producing bypassed hydrocarbon accumulation from the matured Catshill field was determined through a holistic field development plan using waterflooding. The field development plan involved detailed reservoir characterization...
Article
Trinidad has oil sands resources of about 2 billion barrels of oil on land. However, due to the relatively small extent and surface location (about 10,000 acres and with depths varying from surface to less than 500 feet), large scale surface mining and in-situ methods such as SAGD and VAPEX that are applied to recover oil from Canadian oil sands, a...
Article
When oil flows into the wellbore, pressure, and temperature decreases. This causes paraffin (wax) to precipitate into the oil and to deposit in production tubings, which negatively affect oil production. Wax deposition can be mitigated by the application of passive energy waves or chemical solvents. In this study, both methods of wax treatment were...
Article
Full-text available
Slim-hole drilling refers to the drilling of a well with a wellbore typically less than 7 in. in diameter. Slim-hole drilling is beneficial to the low-budget operator as there are considerable savings on rig time and costs and the rig size is ideal for drilling in remote areas. During slim-hole drilling, drilling fluid hydraulics is of great concer...
Conference Paper
The difficulty of determining effective water saturations in shaly-sand oil reservoirs is an old industry problem. Zones with high water saturation may not be developed even though the resistivity logs show that hydrocarbon exist and production data indicate low water cuts. Reservoirs offshore Southwest Trinidad are examples that show a high degree...
Conference Paper
More than four billion barrels of heavy oil remain in the oil fields of Trinidad. If these oil fields are exploited, the country's total oil production can increase significantly. However, heavy oil is difficult to produce, due to its high viscosity, and only a small fraction is recovered after primary recovery. Therefore, it is necessary to implem...
Conference Paper
During oil production, when crude oil flows into a wellbore, pressure and temperature are reduced. The micelle structure of the crude oil is destabilized, allowing paraffin (wax) and/or asphaltene molecules to precipitate into the oil, increasing oil viscosity and allowing deposition in the well tubulars. This causes plugging of production and flow...
Conference Paper
Plunger lift is a well-known artificial lift technique originally developed for the de-liquefaction of gas wells. However its use has been extended to include high Gas – Oil Ratio (GOR) oil wells, those with low or no production due to paraffin and scale deposits and wells with high or fluctuating sales line pressures. It is an intermittent product...
Conference Paper
Slim-hole drilling refers to the drilling of a well with a wellbore typically less than seven inches in diameter. Slim-hole drilling is beneficial to the low budget operator as there are considerable savings on rig time and costs and the rig size is ideal for drilling in remote areas. During slim-hole drilling, drilling fluid hydraulics is of great...
Conference Paper
Trinidad has tar sands resources of about 2 billion barrels of oil on land in the Parrylands/Guapo and Brighton areas. With an oil price of over USD 25 per barrel, commercial extraction of oil from Trinidad tar sands is viable but requires careful study. The relatively small extent of this tar sand (about 10,000 acres and with depths varying from s...
Conference Paper
Rock mechanical properties, such as the Poisson's ratio, Bulk, Shear and Young's moduli are required for various oilfield operations such as seismic processing, reservoir simulation studies, and hydraulic fracturing for sand control. These properties are usually determined from compressional (P) and shear (S) wave velocities which can be captured b...
Article
Bubble-point and dew-point pressures of oil and gas condensate reservoir fluids are used for planning the production profile of these reservoirs. Usually the best method for determination of these saturation pressures is by visual observation when a Constant Mass Expansion (CME) test is performed on a sample in a high pressure cell fitted with a gl...
Article
In steam flooding operations, oil recovery by steam distillation can be in the range of 5.0 % to 60.0 % and therefore requires separate experimental studies and data for accurate steam flood design and predictions. Steam distillation studies were conducted on six Trinidad oil samples with gravity ranging from 11.6° to 30.6° API using a locally asse...
Article
Full-text available
Bubble-point and dew-point pressures of oil and gas condensate reservoir fluids are used for planning the production profile of these reservoirs. Usually the best method for determination of these saturation pressures is by visual observation when a Constant Mass Expansion (CME) test is performed on a sample in a high pressure cell fitted with a gl...
Article
In Microbial Enhanced Oil Recovery (MEOR) oil mobility and oil recovery is increased by growing and reproducing microbes (bacteria) in oil reservoirs. The oil reservoir is either innoculated with a proprietry bacteria and then fed to grow or indigeneous microbes present are fed by the injection of a suitable nutrient identified from labotatory expe...
Article
An accurate description of pseudo-component compositions is required for Equation of State predictions for gas condensate systems. Very often these extended experimental data are unavailable and must be generated using mathematical models, of which the exponential and the three-parameter gamma distribution functions are the two most widely used. Th...
Conference Paper
Bubble-point and dew-point pressures of oil and gas condensate reservoir fluids are used for planning the production profile of these reservoirs. Usually the best method for determination of these saturation pressures is by visual observation when a Constant Mass Expansion (CME) test is performed on a sample in a high pressure cell fitted with a gl...
Conference Paper
An accurate description of pseudo-component compositions is required for Equation of State predictions for gas condensate systems. Very often these extended experimental data are unavailable and must be generated using mathematical models, of which the exponential and the three-parameter gamma distribution functions are the two most widely used. Th...
Conference Paper
In Microbial Enhanced Oil Recovery (MEOR) oil mobility and oil recovery is increased by growing and reproducing microbes (bacteria) in oil reservoirs. The oil reservoir is either innoculated with a proprietry bacteria and then fed to grow or indigeneous microbes present are fed by the injection of a suitable nutrient identified from labotatory expe...
Article
The dew point pressure of a gas condensate fluid is used for planning the production profile of gas condensate reservoirs and for determining their economic success. Usually the best method of the determination of the dew point pressure loci is by visual observation when a constant mass expansion (CME) test is performed on a sample in a high-pressu...
Article
Full-text available
A tuned equation of state (EOS) is used in reservoir engineering for the evaluation of gas and condensate reserves, desired production methods, and facilities for field development. Publications show that the two most widely used sets of parameters from the EOS that are tuned are the binary interaction coefficient (BIC) with the critical properties...
Article
The feasibility of sequestering carbon dioxide in deep saline aquifers is of worldwide importance. This is because large volumes of carbon dioxide can be stored in underground aquifers, thereby reducing the amount of this green house gas being emitted to the atmosphere. Due to a lack of experimental data, this work was conducted to quantify the amo...
Conference Paper
Equation of State (EOS) predictions for gas condensate systems require extended analysis beyond the heptanes plus fraction. In the absence of experimental data, several schemes have been proposed to extend these compositional data based on the observation that a single straight line relationship exists between log of mole percent and molecular weig...
Article
In Trinidad, oil production started just over 100 years ago and steam flood operations started just under 50 years ago. In steam flood operations, oil recovery by steam distillation can be in the range of 5 to 60 % and therefore requires separate experimental and mathematical studies for accurate steam flood predictions. The steam distillation appa...
Article
An accurate description of pseudo-component compositions and properties provides the heart of Equation of State predictions for gas condensate systems. Very often these extended experimental data are unavailable and must be generated using mathematical models, of which the exponential and the three-parameter gamma distribution functions are the two...
Article
Full-text available
Reservoir fluid properties such as bubble point pressure, oil formation volume factor and solution gas-oil ratio are used for the evaluation of reservoir performance and reserves estimation. Laboratory analyses of these properties are not always available and they are best estimated from correlations. The available correlations were developed for b...
Article
Gas condensate compositional simulation studies are conducted to evaluate gas and condensate reserves. This is carried out when making comparisons of production methods for the economic development of a reservoir. The data needed for the evaluation are dew point pressure, gas compressibility factor, liquid volume and produced gas (Constant Volume D...
Article
Trinidad, as in Venezuela, has heavy 10-22° gravity oil resources onshore and off the west coast. In 2010, the country produced 36,000 b/d of heavy oil, which equals about 30% of the country's total production. Trinidad also produces about 4 bcfd of gas from fields off the east and north coast. The Point Lisas and Point Fortin plants generate about...
Article
The article discusses the potential for producing the 1 billion bbl of heavy oil in place contained in onshore reservoirs. Besides the heavy oil onshore, Trinidad also has an estimated 2 billion bbl offshore. The island of Trinidad lies north of the Orinoco River's mouth in the eastern Venezuelan basin. Trinidad's geology is complex and often refer...
Article
A new true boiling point distillation apparatus was designed, fabricated, and tested as part of a larger research effort on characterization studies of condensate fluids. Mixtures from heptanes, C6, to dodecanes, C12, were separated under atmospheric conditions and from tridecanes, C13, to nonadecanes, C19, under vacuum conditions. Benchmarking of...
Article
Characterization of reservoir fluids involves separation of the fluids into single carbon number (SCN) fractions by boiling at temperatures equivalent to the boiling points of the normal paraffins and then making measurements of the mole percentage, specific gravity, and molecular weight of each fraction. The specific gravity and molecular weight c...
Article
Gas condensate fluids require accurate characterization for use in the equations of state used in reservoir modelling for field development planning. The most useful data for the computations are determined from single carbon number (SCN) fractions which are obtained by True Boiling Point (TBP) distillations and high precision gas chromatography (G...
Article
Full-text available
Equation of State (EOS) predictions for gas condensate systems require extended analysis beyond the heptanes plus (C7+) fraction. In the absence of experimental data, several schemes have been proposed to extend these compositional data based on the observation that a single straightline relationship exists between log of mole percent and molecular...
Article
An accurate description of pseudo-component compositions and properties provides the heart of Equation of State predictions for gas condensate systems. Very often these extended experimental data are unavailable and are generated using mathematical relationships. The exponential and the three-parameter gamma distribution functions are the two most...
Article
The volumetric performance of gas condensate reservoirs is needed for designing processing facilities. A tuned Equation-of-State can be used for suitable evaluations. The required data for tuning are dew-point pressure, gas produced, liquid dropout and gas deviation factor, which are experimentally derived from Constant Volume Depletion Tests. Tuni...
Article
Supervisor : P. Bruce, G. Bartlett. Thesis (M. Phil.)--University of the West Indies, St. Augustine, Trinidad, 1990. Includes bibliographical references (leaves 154-158).

Network

Cited By

Projects

Projects (2)
Project
Heavy Oil Recovery and Oil Recovery from Trinidad tar-sands by Radio Frequency Heating