Download or read book Recovery of Heavy and Conventional Oils from Pressure depleted Reservoirs Using Horizontal Wells microform written by Vivek Kanakia and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1993 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery of Heavy and Conventional Oils from Pressure depleted Reservoirs Using Horizontal Wells written by Vivek Kanakia and published by . This book was released on 1993 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Oil Recovery Field Case Studies written by Bernard Tremblay and published by Elsevier Inc. Chapters. This book was released on 2013-04-10 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold production is a solution-gas drive process in which a reservoir saturated with live heavy oil reservoir is depleted as quickly as possible to generate relatively stable gas bubbles leading to higher oil recoveries (5–10% original oil in place (OOIP)) than for light oils (2–5% OOIP). More specifically, these bubbles increase the oil/gas mixture compressibility, which maintains the reservoir pressures for longer times than for light oils.
Download or read book Scaled Model Studies of Heavy Oil Recovery Using Horizontal Wells in Heavy Oil Reservoirs written by and published by . This book was released on 1990 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of heavy oil is difficult because of high oil viscosities and resultant low oil mobilities, resulting in only 2-10 percent of the oil in place being produced by primary depletion. Thermal methods appear to be economically marginal for reservoirs thinner than 10m, therefore the possibility of waterflooding heavy oil reservoirs was investigated. This report presents the results of a study aimed at scaled model investigation of waterflooding heavy oil reservoirs using horizontal wells with or without a bottom-water zone, and theoretical investigation of the same, to identify different production mechanisms, set screening criteria for target reservoir selection, and develop production strategies.
Download or read book Recovery of Oil from Reservoirs Underlain with a Bottom Water Zone by Horizontal Wells microform written by Qi Jiang and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Oil Recovery written by Marcel Latil and published by Editions TECHNIP. This book was released on 1980 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents : 1. Factors common to all enhanced recovery methods. 2. Water injection. 3. Gas injection in an oil reservoir (immiscible displacement). 4. Miscible drive. 5. Gas recycling in gas-condensate reservoirs. 6. Thermal recovery methods. 7. Other methods of enhanced recovery. References. Index.
Download or read book Heavy Crude Oil Recovery written by E. Okandan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the last 10 years the world has come to a point where the easily explorable oil deposits have now been found, and it is anticipated that such deposits will be depleted by the beginning of the Twenty-first Century. However, the increasing demand of man kind for energy has caused technologists to look into ways of find ing new sources or to reevaluat:e unconventional sources which, in the past, have not been economical. In this respect, heavy crude and tar sand oils are becoming important in fulfilling the world's energy requirements. What are heavy crude and tar sand oils? There is still some confusion as to their definitions, inasmuch as they vary among organizations and countries. In an effort to set agreed meanings, UNITAR, in a meeting in February 1982 in Venezuela, proposed the following definitions (see also Table 1): 1. Heavy crude oil and tar sand oil are petroleum or petroleum like liquids or semi-solids naturally occurring in porous media. The porous media are sands, sandstone, and carbonate rocks. 2. These oils will be characterized by viscosity and density. 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. 3. Heavy crude oil has a gas-free viscosity of 100-10000 mPa.s (cp) 3 o at reservoir temperatures, or a density of 943 kg/m (20 API) 3 o o to 1000 kg/m (10 API) at 15.6 C and at atmospheric oressure.
Download or read book RESEARCH OIL RECOVERY MECHANISMS IN HEAVY OIL RESERVOIRS written by and published by . This book was released on 1999 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States continues to rely heavily on petroleum fossil fuels as a primary energy source, while domestic reserves dwindle. However, so-called heavy oil (10 to 20{sup o}API) remains an underutilized resource of tremendous potential. Heavy oils are much more viscous than conventional oils. As a result, they are difficult to produce with conventional recovery methods such as pressure depletion and water injection. Thermal recovery is especially important for this class of reservoirs because adding heat, usually via steam injection, generally reduces oil viscosity dramatically. This improves displacement efficiency. The research described here was directed toward improved understanding of thermal and heavy-oil production mechanisms and is categorized into: (1) flow and rock properties; (2) in-situ combustion; (3) additives to improve mobility control; (4) reservoir definition; and (5) support services. The scope of activities extended over a three-year period. Significant work was accomplished in the area of flow properties of steam, water, and oil in consolidated and unconsolidated porous media, transport in fractured porous media, foam generation and flow in homogeneous and heterogeneous porous media, the effects of displacement pattern geometry and mobility ratio on oil recovery, and analytical representation of water influx. Significant results are described.
Download or read book Cold Production of Heavy Oil with Bottom Water written by Wenting Qin and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study proposes a new (non-thermal) technique using Bilateral Water Sink (BWS) wells to develop heavy-oil reservoirs with strong bottom water drive - a problem for the conventional methods where the bottom water invades the wells by coning/cresting and leaves the oil unrecovered. BWS removes water cresting by separating the oil and water production using two (upper - oil and lower - water) parallel lateral sections of the same well so that the oil-water interface remains un-altered and the upper oil inflow is water-free. Reservoir simulation study demonstrates advantage of water-free oil inflow to the well where water drives the oil from the edges of the well drainage area to the well instead of bypassing it at the well. Analytical formulas are derived for critical rates ensuring the water-free oil production using the hodograph method and Dupuit Approximation. The resulting BWS well design model defines production strategy and computes oil recovery. The model is verified theoretically by making predictions for the actual oilfield that show a considerable increase of oil recovery from less than 15 percent for conventional horizontal well to over 40 percent for BWS well.
Download or read book Recovery of Oil from Reservoirs Underlain with a Bottom Water Zone by Horizontal Wells written by Qi Jiang and published by . This book was released on 1994 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Oil Recovery in Shale and Tight Reservoirs written by James J.Sheng and published by Gulf Professional Publishing. This book was released on 2019-11-07 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oil Recovery in Shale and Tight Reservoirs delivers a current, state-of-the-art resource for engineers trying to manage unconventional hydrocarbon resources. Going beyond the traditional EOR methods, this book helps readers solve key challenges on the proper methods, technologies and options available. Engineers and researchers will find a systematic list of methods and applications, including gas and water injection, methods to improve liquid recovery, as well as spontaneous and forced imbibition. Rounding out with additional methods, such as air foam drive and energized fluids, this book gives engineers the knowledge they need to tackle the most complex oil and gas assets. - Helps readers understand the methods and mechanisms for enhanced oil recovery technology, specifically for shale and tight oil reservoirs - Includes available EOR methods, along with recent practical case studies that cover topics like fracturing fluid flow back - Teaches additional methods, such as soaking after fracturing, thermal recovery and microbial EOR
Download or read book Improved Oil Recovery from Light and Heavy Oil Reservoirs written by Mahmod M. Hwessa and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sovent Based Enhanced Oil Recovery for In Situ Upgrading of Heavy Oil Sands written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the depletion of conventional crude oil reserves in the world, heavy oil and bitumen resources have great potential to meet the future demand for petroleum products. However, oil recovery from heavy oil and bitumen reservoirs is much more difficult than that from conventional oil reservoirs. This is mainly because heavy oil or bitumen is partially or completely immobile under reservoir conditions due to its extremely high viscosity, which creates special production challenges. In order to overcome these challenges significant efforts were devoted by Applied Research Center (ARC) at Florida International University and The Center for Energy Economics (CEE) at the University of Texas. A simplified model was developed to assess the density of the upgraded crude depending on the ratio of solvent mass to crude oil mass, temperature, pressure and the properties of the crude oil. The simplified model incorporated the interaction dynamics into a homogeneous, porous heavy oil reservoir to simulate the dispersion and concentration of injected CO2. The model also incorporated the characteristic of a highly varying CO2 density near the critical point. Since the major challenge in heavy oil recovery is its high viscosity, most researchers have focused their investigations on this parameter in the laboratory as well as in the field resulting in disparaging results. This was attributed to oil being a complex poly-disperse blend of light and heavy paraffins, aromatics, resins and asphaltenes, which have diverse behaviors at reservoir temperature and pressures. The situation is exacerbated by a dearth of experimental data on gas diffusion coefficients in heavy oils due to the tedious nature of diffusivity measurements. Ultimately, the viscosity and thus oil recovery is regulated by pressure and its effect on the diffusion coefficient and oil swelling factors. The generation of a new phase within the crude and the differences in mobility between the new crude matrix and the precipitate readily enables removal of asphaltenes. Thus, an upgraded crude low in heavy metal, sulfur and nitrogen is more conducive for further purification.
Download or read book Recovery of Additional Oil from Depleted Reservoirs by Steam Injection written by Pankaj Kumar Neog and published by . This book was released on 1986 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reservoir Simulation of Heavy Oil Recovery by Hot Fluid Injection in Horizontal Wells written by Alexander Nulefac Folefac and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basic Concepts in Enhanced Oil Recovery Processes written by M. Baviere and published by Springer. This book was released on 1991-09-30 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Heavy Oil Recovery Using CO2 Huff N Puff Process written by Xiang Zhou and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2 based enhanced oil recovery methods, such as continuous CO2 injection, intermittent CO2 injection, water-alternating CO2 injection, and CO2 huff 'n' puff, are successfully implemented in heavy oil reservoirs. Among them, the CO2 huff 'n' puff method has been proved as an applicable recovery method. Although many previous researches were conducted on the CO2 huff 'n' puff process applied in heavy oil reservoirs, some technical issues are still not investigated, such as non-equilibrium phase behaviors of foamy oil flow, CO2 diffusion into heavy oil, and the production performance in CO2 huff 'n' puff process coupled with non-equilibrium phase behaviors and CO2 diffusion. Therefore, this study aims at addressing the following major topics. Non-equilibrium phase behaviors of foamy oil flow. In order to investigate the foamy oil flow behavior in the primary production process, experimental studies on nonequilibrium phase behaviors of heavy oil-methane system are implemented in a pressure/volume/temperature cell with different pressure decline methods. The experimental results indicate that, with pressure decline rate increases, the pseudo-bubblepoint pressure decreases, leading to longer pressure duration of foamy oil, so that the foamy oil stability becomes stronger under higher pressure depletion rate. To study foamy oil stability in the production stage of the CO2 huff 'n' puff process, the non-equilibrium phase behaviors are investigated using the heavy oil-CO2 system. The same experimental methods are applied with that in the heavy oil-methane system, but the gas transfers rates (solution gas transfers to dispersed gas, dispersed gas transfers to free gas) in heavy oil- CO2 system are much higher than that observed in the heavy oil-methane system. A dynamic reaction rate model is developed to match the foamy oil stability using heavy oil- CO2 system, and high agreements are achieved. The reaction rate constants (k1 and k2) among different gas phases are determined through the history match. The performance of foamy oil flow, in the production stage of the CO2 huff 'n' puff process, highly relates to the amount of CO2 dissolves into heavy oil during the soaking stage. To understand the CO2 diffusion process in the heavy oil, CO2 diffusion coefficient is measured in both bulk phase (high pressure cell) and porous media (real reservoir core). The CO2 diffusion coefficient determination process mainly includes: (1) experimental study is conducted to measure the pressures in the diffusion process using the pressure decay method; (2) mathematical modeling study is carried out to calculate the CO2 diffusion coefficients using the history match method. Based on the understandings of the non-equilibrium phase behaviors and CO2 diffusion, the heavy oil production performance in CO2 huff 'n' puff process coupled with non-equilibrium phase behavior and CO2 diffusion is investigated. Six CO2 huff 'n' puff experiments are carried out using long cores (60 cm). The main affect parameters are studied, including pressure depletion rates (0.5, 1, 4, and 16 kPa/min), soaking time (5, 10, and 20 hours) and cycle numbers. Via experimental study, an equation which indicates the relationship of the cumulative oil and gas production in each cycle and each test is gained with high agreement. The experimental results indicate that the CO2 huff 'n' puff process can be an efficient approach to enhance heavy oil production with a recovery factor of 38.02%. The optimized pressure depletion rates, soaking time and cycle numbers are 1 kPa/min, 5 hours and 3 cycles, respectively, and the optimization parameters are upscaled for field application using scaling criteria.
