Heavy oil recovery pdf

As a result, the price of heavy oil is typically discounted in the market. Pdf microorganisms produce a variety of compounds that are able to mobilize oil trapped in reservoirs and improve oil recovery. Enhanced heavy oil recovery in sandstone cores using tio2. For these types of reservoirs, electromagnetic heating is the. The density and viscosity of the oil is the determining factor.

High oil viscosity is a major concern for the recovery of oil from heavy oil reservoirs. Fluids 263 employment in human capital 4 enhanced oil recovery 90. Moving on to the upgrading and refining of the product, the book also includes information on in situ upgrading. The oil pollution act of 1990 opa 90 requires facilities or vessels which store or transport group v heavy oils, sinking oils in u. Downhole electrical heating has proven to be an effective way of lowering the oil. Moving on to the upgrading and refining of the product, the book also includes information. Enhanced oil recovery eor involves injecting a fluid into an oil reservoir that increases oil. Fieldscale analysis of heavyoil recovery by electrical heating. Pdf co2 flooding strategy to enhance heavy oil recovery. Outline of heavy oil emulsified viscosity reduction technology heavy oil emulsified viscosity reduction is to mix a certain concentration of surfactant solution with heavy oil at a certain temperature, making the high viscosity heavy oil is dispersed in the. Parametric study of heavy oil recovery by electromagnetic heating m. In addition, heavy oil contains a high proportion of sulfur, heavy metals, waxes, carbon residues, and other impurities, which make heavy oil costly. However, recovery rates for heavy oil are often limited from 530% of oil in place. In the thai process, the cracking reaction, created due to the high temperature within the mobile oil.

Heavy oil recovery, electromagnetic heating, singlephase flow. Oil viscosity is often correlated directly to the reserves estimate in heavy oil formations and can determine the success or failure of a given enhanced oil recovery scheme. Improving oil recoveryior with polymer flooding in a heavy. Heavy oils and tar sands respond poorly to primary and secondary recovery methods, and the bulk of the production from such reservoirs come from eor. Pore scale phenomena of heavy oil recovery using vapor extraction ioannis chatzis porous media research institute department of chemical engineering, university of waterloo, canada abstract the vapour extraction process vapex for heavy oil recovery is targeted for reservoirs having oil viscosity greater than 10 pa. Estimated reserves of heavy oil are over 6 trillion barrels, three times that of conventional oil and gas. Recovery methods that work well in one area may not work in. An overview of heavy oil properties and its recovery and transportation methods 573 brazilian journal of chemical engineering vol. This article is published with open access at abstract new recovery technologies are. Fieldscale analysis of heavyoil recovery by electrical. Recovery results demonstrated that complex colloidal solution introduced in the previous study with silica and dodecyltrimethylammonium bromide dtab along with screened chemicals from glass tube tests in this study can enhance heavy oil recovery significantly with an addition of low concentration of xanthan gum lee and babadagli 2018. The way of using this technique is to attain further upgrading of heavy oil by covering a perforated horizontal producer by a layer of catalyst 8. Electrical heating for heavyoil recovery is not a new idea, but the commercialization and wider application of this technique require detailed analyses. All schlumberger case studies, product and technical data sheets, articles, interviews, animations, and more.

Nowadays various recovery mechanisms are used in the petroleum industry to increase hydrocarbon production as much as possible in a given oil and gas field. Estimated reserves of heavy oil are over 6 trillion barrels, three times that of conventional oil and gas factors that affect the difficulty of putting reserves into production include permeability, porosity, depth and pressure. Most heavy oil requires heat or dilution to flow into a well or through a pipeline. In enhanced recovery methods for heavy oil and tar sands, speight provides the current methods of recovery for heavy oil and tar sand bitumen technology, broken down by thermal and nonthermal methods. Central european university, hungary chair of advisory committee. When oil is displaced by water, the oilwater mobility ratio is so high that the injected water fingers through the reservoirs.

Parametric study of heavy oil recovery by electromagnetic heating. Direct link farouq ali, jones and meldau practical heavy oil recovery. By injecting polymer solution into reservoirs, the oilwater mobility ratio can be much reduced, and the displacement front advances evenly to sweep a larger volume. Heavy oil recovery heavy oil can be recovered economically and effectively without the costly steam, sagd or solvent process. Current thermal recovery processes are dominated by steam injection methods steam drive and steam soak, which heat the oil and reduce its viscosity, thus improving oil mobility. An engineer, graduate student or professional working with heavy oil, upcoming and current, will greatly benefit from this muchneeded text. As a result, viscosity is an important parameter for performing numerical. Water flooding being the main technology used, it recovers 10 to 40 percent of the oil in.

Oil recovery techniques solvent flooding co 2 hydrocarbon gas chemical flooding polymer flooding surfactant polymer flooding sp alkaline surfactant polymer flooding asp conformance improvement methods thermal techniques for heavy oil steam drive, steam stimulation, sagd solvent, insitu combustion carbonate reservoirs and wettability. Farouq ali, jones and meldau practical heavy oil recovery. Oil production in presence of a bottom aquifer is one of the most challenging issues in reservoir engineering. Prediction of heavyoil viscosities with a simple correlation.

The oil industry has therefore put increasing emphasis onimproving recovery from known reservoirs. Conventional thermal recovery methods such as steam injection are not costeffective for these thin reservoirs, due to excessive heat loss through the overburden. Paper open access overview of emulsified viscosity reducer. Recovery of heavy oil from oil sands filed march 9, 1965 mbratorydriving mechanisit p heater evin l. Pdf co2 flooding is one of the most promising techniques to enhance both light and heavy oil recovery. High oilviscosity is a major concern for the recovery of oil from heavyoil reservoirs. Mamora steam injection with added surface active chemicals is one of general eor. The chemical makeup is often the defining variable in recovery rates. Recently, attention has been directedto the large deposits of heavy oil on our continent. Heavy crude oil or extra heavy crude oil is highlyviscous oil that cannot easily flow to production wells under normal reservoir conditions it is referred to as heavy because its density or specific gravity is higher than that of light crude oil.

Heavy oil and tar sand bitumen 7 reflected in the differences observed in various recovery processes as well as in the price variations between conventional crude oil types, the heavy oils, and tar sand bitumen tables 1. While thermal recovery is usually considered the most effective method for lowering viscosity, for some reservoirs introducing heat with commonly implemented thermal methods is not recommended. Factors that affect the difficulty of putting reserves into production include permeability, porosity, depth and pressure. Heavyoil recovery from thin pay zones by electromagnetic heating. The molecular weight of the test polymer was 820 million. Comparing venezuelan and canadian heavy oil and tar sands. Oil viscosity is often correlated directly to the reserves estimate in heavyoil formations and can determine the success or failure of a given enhancedoilrecovery scheme. Viscosity will be used to define heavy crude oil and tar sand oil, and density oapi will be used when viscosity measurements are not available. Very little of this viscous oil is likely to disperse into the water column. Asphaltene precipitation is caused by numerous factors such as temperature, pressure and compositional vartiations. Heavyoil recovery from thin pay zones by electromagnetic. Oil recovery by skimmers and vacuum pumps can be very effective, early in the spill.

Primary and secondary recovery conventional recovery targets mobile oil in the reservoir and tertiary recovery or eor targets immobile oil that oil which cannot be produced due to capillary and viscous forces. An introduction to enhanced oil recovery techniques. Fundamentals of enhanced heavy oil recovery are either to reduce oil viscosity by adding heat or to decrease interfacial tension by injecting solventschemicals 8 9 101112141516. Glover 2001 explained all recovery methods, including primary recovery mechanism as it. Introducing energy to the formation has proven to be an effective way of lowering the oil viscosity by raising the temperature in the formation. Oil chems superflow sf series surfactants are custom formulated based on the reservoir characteristics, oil properties, temperature and.

Public june 2012 executive summary the oil pollution act of 1990 opa 90 requires facilities or vessels which store or transport group v heavy oils, sinking oils in u. In order to minimize heat losses, it is necessary to be able to carry out controlled heating of the pay zone. Assessing a numerical model to predict the oil mobility v. There are many heavy oil reservoirs with thin pay zones less than 10 m. The heavy oil reservoirs in saskatchewan are not suitable for thermal methods or miscible co 2. New heavy oil technology for heavy oil recovery and in situ upgrading. When oil is displaced by water, the oil water mobility ratio is so high that the injected water fingers through the reservoirs. Thermal recovery technology, also called reducing oil viscosity production technology including steam stimulation, steam flooding and sagd drilling, etc.

Bureau of mineshas estimated 1 that in the united states there are more than 150 billionbarrels of oil with a gravity of less than 25api in. Practical heavy oil recovery pdf alzaytoonah university. By injecting polymer solution into reservoirs, the oil water mobility ratio can be much reduced, and the displacement front advances evenly to sweep a larger volume. Experimental study of steam surfactant flood for enhancing heavy oil recovery after waterflooding. New technology utilized for the recovery of heavy oil is constantly increasing recovery rates. Drilling, completion, acid stimulation, and hydraulic fracturing activities can also result in settling in the nearwellbore region. Viscosity is a major obstacle in the recovery of low api gravity oil resources from heavy oil and bitumen reservoirs. Steamflooding of oil reservoirs is the most effective eor method to date as gauged by cumulative oil recovery. Enhanced recovery methods for heavy oil and tar sands. Comparisons showed that cumulative oil production obtained by em heating are better than what is achieved by a similar enhanced oil recovery technique called. Impact of divalent ions on heavy oil recovery by in situ. Introduction thermal oil recovery methods add heat to a reservoir to reduce oil viscosity and make oil more mobile. Recovery rates, enhanced oil recovery and technological limits core. For such heavy oil river channel reservoir to reach such a final oil recovery, it could be concluded as a great success.

Pdf spe1845ms production optimization in heavy oil. Heavyoil recovery, electromagnetic heating, singlephase flow. Twodimensional comsol simulation of heavyoil recovery. Heavy crude oil has a gasfree viscosity of 1000 mpa. Electromagnetic radiation in heavy oil recovery process. Typically, crude oil quality has an effect on the recovery process insofar as. Addition of condensable or noncondensable gas to steamflood. Parametric study of heavy oil recovery by electromagnetic. Oil chems superflow sf series surfactants are custom formulated based on the reservoir characteristics, oil properties, temperature and injection water properties. Anatase and amorphous tio2 nanoparticles were used to improve recovery of heavy oil from sandstone cores. Pdf in this work, application of co2 saturated with silica nanoparticles in continuouswater alternating gas wag injection for heavy oil.

Heavy oil recovery and upgrading covers properties, factors, methods and all current and upcoming processes, giving engineers, new and experienced, the full spectrum of recovery choices, including sagd, horizontal well technology, and hybrid approaches. Electrical heating for heavy oil recovery is not a new idea, but the commercialization and wider application of this technique require detailed analyses to determine optimal application conditions. Recovery of stranded heavy oil by electromagnetic heating. Heavy oil production is a developing technology for extracting heavy oil in industrial quantities. The recovery of heavy and unconventional oils will not be discussed in any detail, nor. It is primarily associated with heavy oil recovery and is emerging as a solution for improved recovery in fractured systems. Before performing core floods, the stability of nanoparticles at different salinities was tested using. The steam chamber study of thermal recovery heavy oil. Measurement, accounting and reporting plan for thermal heavy oil recovery projects october 2018 page 2 of 9 record of change version date description 0. There are also vast differences among heavy oil deposits from field to field and recovery factors vary greatly. While water recovered only 49% of the oil in the core flood experiments, 0.

Twodimensional comsol simulation of heavyoil recovery by. Enhanced oil recovery of heavy oil in reservoirs with bottom. Thermal recovery involves different wellknown processes such as steam. Pdf experimental investigation of heavy oil recovery by. Heavy oil is a type of highly dense and viscous crude oil that cannot be recovered through ordinary production means. It is primarily associated with heavyoil recovery and is emerging as a solution for improved recovery in fractured systems. Improving oil recoveryior with polymer flooding in a. Paper open access overview of emulsified viscosity. It is important to determine spatial distribution of reservoir properties including reservoir rock and fluid, and their changes vs. Paper open access enhanced recovery of heavy oil using. Crude oil with api 10,000 conventional heavy oil 15% source. Pdf biotechnology for heavy oil recovery researchgate. Dense and viscous, heavy oil difficult and costly to develop and produce. Heavy oil deposits are generally found at shallow depths 1,0004,000 feet, where reservoir temperatures are low and oil viscosity is high, although the depth range for all the reservoirs is from the surface to greater than,000 feet deitzman and others, 1965.