Experimental Investigation of Nonthermal Enhanced Oil Recovery Techniques for Improving Oil Recovery on Alaska North Slope

Download Experimental Investigation of Nonthermal Enhanced Oil Recovery Techniques for Improving Oil Recovery on Alaska North Slope PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.:/5 (132 download)

DOWNLOAD NOW!


Book Synopsis Experimental Investigation of Nonthermal Enhanced Oil Recovery Techniques for Improving Oil Recovery on Alaska North Slope by :

Download or read book Experimental Investigation of Nonthermal Enhanced Oil Recovery Techniques for Improving Oil Recovery on Alaska North Slope written by and published by . This book was released on 2022 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploitation of viscous and heavy oils on Alaska North Slope (ANS) requires nonthermal enhanced oil recovery (EOR) techniques. Currently, three nonthermal EOR methods, including solvent injection, low salinity water (LSW) flooding, and low salinity polymer (LSP) injection, have been proved to be useful on ANS. ANS viscous and heavy oils can be developed effectively by combining those three nonthermal EOR techniques. In this dissertation, lab experiments have been conducted to investigate the potential of the proposed hybrid nonthermal EOR techniques, including HSW (high salinity water)-LSW-softened LSW flooding, HSW-LSW-LSP flooding, CO2-enriched LHS (light hydrocarbon solvent)-alternating-LSW flooding, LHS-alternating-LSW flooding, CO2-enriched LHS (light hydrocarbon solvent)-alternating-LSP flooding, and LHS-alternating-LSP flooding, to improve ANS viscous oil recovery. Besides, the effect of essential clay minerals, including sodium-based montmorillonite (Na-Mt), calcium-based montmorillonite (Ca-Mt), illite, and kaolinite, on LSW flooding has been examined. In addition, the CO2 influence on solvent-alternating-LSP flooding in enhancing ANS viscous oil recovery has been investigated. Furthermore, the blockage issue during CO2-enriched LHS-alternating-LSP flooding has been investigated, and its solution has been proposed and analyzed. The EOR potential of the proposed hybrid EOR techniques has been evaluated by conducting coreflooding experiments. Additionally, relative permeability, swelling property, zeta potential, interfacial tension (IFT), and pressure-volume-temperature (PVT) tests have been conducted to reveal the EOR mechanisms of the proposed hybrid EOR techniques. Moreover, water ion analysis of DI-water/natural-sand and DI-water/natural-sand/CO2 systems has been carried out to reveal the complex reaction between CO2, sand, and LSP solution. It was found that, compared to conventional waterflooding, all the proposed hybrid EOR techniques could result in better oil recovery potential. It was noticed that the presence of CO2 in LHS could be more beneficial to the solvent-alternating-LSW/LSP flooding processes during the 1st cycle due to the greater effectiveness of oil viscosity reduction. In particular, severe blockage issue occurred when conducting CO2-enriched LHS-alternating-LSP flooding using sand pack due to the polymer precipitation. Additionally, the calculated water relative permeabilities are much lower than the typical values, implying more complex interactions between the reservoir rock, heavy oil, and injected water. Moreover, comparing to HSW, LSW could further swell Na-Mt significantly, which may benefit LSW flooding by improving sweep efficiency since in-situ swelling of Na-Mt has the potential to block the higher permeable water-flooded zone and divert the injected brine to lower permeable and unswept area. Comparing to Na-Mt, LSW couldn’t swell Ca-Mt and illite further, whereas kaolinite was incapable of swelling in both HSW and LSW. Furthermore, about 60 mole% of solvent could be dissolved into the ANS viscous oil at target reservoir condition, resulting in oil swelling and viscosity reduction effects, which provided better microscopic displacement efficiency. Although the presence of CO2 in LHS had a negative impact on the oil swelling effect, the influence on the oil viscosity reduction was positive. In addition, reducing the salinity of water could generate more negative zeta potential values on the surface of clay minerals and sand, making it more water wet. Besides, IFT of oil/LSW system is higher than that of oil/HSW system, indicating that IFT reduction is not an EOR mechanism of LSW flooding in our proposed hybrid EOR techniques. Additionally, after introducing CO2 to the DIwater/natural-sand system, the concentration of multivalent cations was increased, which may be responsible for the polymer precipitation. The blockage issue could be solved by injecting LSW as a spacer between CO2-enriched LHS injection and LSP injection.

Enhanced Oil Recovery of Heavy Oils by Non-thermal Chemical Methods

Download Enhanced Oil Recovery of Heavy Oils by Non-thermal Chemical Methods PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.:/5 (87 download)

DOWNLOAD NOW!


Book Synopsis Enhanced Oil Recovery of Heavy Oils by Non-thermal Chemical Methods by : Rahul Kumar

Download or read book Enhanced Oil Recovery of Heavy Oils by Non-thermal Chemical Methods written by Rahul Kumar and published by . This book was released on 2013 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that the shallow reservoirs of Ugnu, West Sak and Shraeder Bluff in the North Slope of Alaska hold about 20 billion barrels of heavy oil. The proximity of these reservoirs to the permafrost makes the application of thermal methods for the oil recovery very unattractive. It is feared that the heat from the thermal methods may melt this permafrost leading to subsidence of the unconsolidated sand (Marques 2009; Peyton 1970; Wilson 1972). Thus it is necessary to consider the development of cheap non-thermal methods for the recovery of these heavy oils. This study investigates non-thermal techniques for the recovery of heavy oils. Chemicals such as alkali, surfactant and polymer are used to demonstrate improved recovery over waterflooding for two oils (A:10,000cp and B:330 cp). Chemical screening studies showed that appropriate concentrations of chemicals, such as alkali and surfactant, could generate emulsions with oil A. At low brine salinity oil-in-water (O/W) emulsions were generated whereas water-in-oil (W/O) emulsions were generated at higher salinities. 1D and 2D sand pack floods conducted with alkali surfactant (AS) at different salinities demonstrated an improvement of oil recovery over waterflooding. Low salinity AS flood generated lower pressure drop, but also resulted in lower oil recovery rates. High salinity AS flood generated higher pressure drop, high viscosity emulsions in the system, but resulted in a greater improvement in oil recovery over waterfloods. Polymers can also be used to improve the sweep efficiency over waterflooding. A 100 cp polymer flood improved the oil recovery over waterflood both in 1D and 2D geometry. In 1D geometry 1PV of polymer injection increased the oil recovery from 30% after waterflood to 50% OOIP. The tertiary polymer injection was found to be equally beneficial as the secondary polymer injection. It was also found that the combined application of AS and polymer did not give any major advantage over polymer flood or AS flood alone. Chemical EOR technique was considered for the 330cp oil B. Chemical screening studies showed that microemulsions could be generated in the system when appropriate concentrations of alkali and surfactant were added. Solubilization ratio measurement indicted that the interfacial tension in the system approached ultra-low values of about 10-3 dynes/cm. The selected alkali surfactant system was tested in a sand pack flood. Additionally a partially hydrolyzed polymer was used to provide mobility control to the process. The tertiary injection of ASP (Alkali-Surfactant-Polymer) was able to improve the oil recovery from 60% OOIP after the waterflood to almost 98% OOIP. A simple mathematical model was built around viscous fingering phenomenon to match the experimental oil recoveries and pressure drops during the waterflood. Pseudo oil and water relative permeabilities were calculated from the model, which were then used directly in a reservoir simulator in place of the intrinsic oil-water relative permeabilities. Good agreement with the experimental values was obtained. For history matching the polymer flood of heavy oil, intrinsic oil-water relative permeabilities were found to be adequate. Laboratory data showed that polymer viscosity is dependent on the polymer concentration and the effective brine salinity. Both these effects were taken into account when simulating the polymer flood or the ASP flood. The filtration theory developed by Soo and Radke (1984) was used to simulate the dilute oil-in-water emulsion flow in the porous media when alkali-surfactant flood of the heavy oil was conducted. The generation of emulsion in the porous media is simulated via a reaction between alkali, surfactant, water and heavy oil. The theory developed by Soo and Radke (1984) states that the flowing emulsified oil droplets clog in pore constrictions and on the pore walls, thereby restricting flow. Once captured, there is a negligible particle re-entrainment. The simulator modeled the capture of the emulsion droplets via chemical reaction. Next, the local water relative permeability was reduced as the trapping of the oil droplets will reduce the mobility of the water phase. This entrapment mechanism is responsible for the increase in the pressure drop and improvement in oil recovery. The model is very sensitive to the reaction rate constants and the oil-water relative permeabilities. ASP process for lower viscosity 330 cp oil was modeled using the UTCHEM multiphase-multicomponent simulator developed at the University of Texas at Austin. The simulator can handle the flow of three liquid phases; oil, water and microemulsion. The generation of microemulsion is modeled by the reaction of the crude oil with the chemical species present in the aqueous phase. The experimental phase behavior of alkali and surfactant with the crude oil was modeled using the phase behavior mixing model of the simulator. Oil and water relative permeabilities were enhanced where microemulsion is generated and interfacial tension gets reduced. Experimental oil recovery and pressure drop data were successfully history matched using UTCHEM simulator.

Study of Hydrocarbon Miscible Solvent Slug Injection Process for Improved Recovery of Heavy Oil from Schrader Bluff Pool, Milne Point Unit, Alaska. Final Report

Download Study of Hydrocarbon Miscible Solvent Slug Injection Process for Improved Recovery of Heavy Oil from Schrader Bluff Pool, Milne Point Unit, Alaska. Final Report PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (683 download)

DOWNLOAD NOW!


Book Synopsis Study of Hydrocarbon Miscible Solvent Slug Injection Process for Improved Recovery of Heavy Oil from Schrader Bluff Pool, Milne Point Unit, Alaska. Final Report by :

Download or read book Study of Hydrocarbon Miscible Solvent Slug Injection Process for Improved Recovery of Heavy Oil from Schrader Bluff Pool, Milne Point Unit, Alaska. Final Report written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Energy Strategy Plan (NES) has called for 900,000 barrels/day production of heavy oil in the mid-1990s to meet our national needs. To achieve this goal, it is important that the Alaskan heavy oil fields be brought to production. Alaska has more than 25 billion barrels of heavy oil deposits. Conoco, and now BP Exploration have been producing from Schrader Bluff Pool, which is part of the super heavy oil field known as West Sak Field. Schrader Bluff reservoir, located in the Milne Point Unit, North Slope of Alaska, is estimated to contain up to 1.5 billion barrels of (14 to 21[degrees]API) oil in place. The field is currently under production by primary depletion; however, the primary recovery will be much smaller than expected. Hence, waterflooding will be implemented earlier than anticipated. The eventual use of enhanced oil recovery (EOR) techniques, such as hydrocarbon miscible solvent slug injection process, is vital for recovery of additional oil from this reservoir. The purpose of this research project was to determine the nature of miscible solvent slug which would be commercially feasible, to evaluate the performance of the hydrocarbon miscible solvent slug process, and to assess the feasibility of this process for improved recovery of heavy oil from Schrader Bluff reservoir. The laboratory experimental work includes: slim tube displacement experiments and coreflood experiments. The components of solvent slug includes only those which are available on the North Slope of Alaska.

An Experimental Investigation of Enhanced Oil Recovery Techniques for Ponderosa Ridge Field, Powder River Basin, Wyoming

Download An Experimental Investigation of Enhanced Oil Recovery Techniques for Ponderosa Ridge Field, Powder River Basin, Wyoming PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (227 download)

DOWNLOAD NOW!


Book Synopsis An Experimental Investigation of Enhanced Oil Recovery Techniques for Ponderosa Ridge Field, Powder River Basin, Wyoming by : David F. DŚouza

Download or read book An Experimental Investigation of Enhanced Oil Recovery Techniques for Ponderosa Ridge Field, Powder River Basin, Wyoming written by David F. DŚouza and published by . This book was released on 1990 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimental Investigation of Nanoparticle Enhanced Oil Recovery Techniques Using Micromodels

Download Experimental Investigation of Nanoparticle Enhanced Oil Recovery Techniques Using Micromodels PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)

DOWNLOAD NOW!


Book Synopsis Experimental Investigation of Nanoparticle Enhanced Oil Recovery Techniques Using Micromodels by : Ayub Khezrnejad

Download or read book Experimental Investigation of Nanoparticle Enhanced Oil Recovery Techniques Using Micromodels written by Ayub Khezrnejad and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology has found widespread application in a diverse range of industries. Researchers are now investigating whether nanotechnology can be applied to enhance oil recovery. The goal of enhanced oil recovery is to manipulate the fluid-fluid properties (interfacial tension, viscosity), and fluid-rock properties (contact angle, relative permeability) to improve pore scale recovery efficiency. In this study, nanofluids were prepared and injected into micromodels to study their effectiveness on oil recovery. Silicon oxide and aluminum oxide nanoparticles were used. Nanofluid viscosity and interfacial tension between nanofluid and oil was measured and modeled. Response Surface Methodology (RSM) was used to investigate the effect of the factors and their interactions. Fluid characterization data shows that nanoparticles are effective in both interfacial tension reduction and viscosity enhancement. The results from the micromodel studies indicate that adding a small amount of nanoparticles to the brine can enhance oil recovery by approximately 10 % - 20 %.

Miscible Enhanced Oil Recovery Studies for Schrader Bluff Heavy Oil Reservoir, North Slope of Alaska

Download Miscible Enhanced Oil Recovery Studies for Schrader Bluff Heavy Oil Reservoir, North Slope of Alaska PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (333 download)

DOWNLOAD NOW!


Book Synopsis Miscible Enhanced Oil Recovery Studies for Schrader Bluff Heavy Oil Reservoir, North Slope of Alaska by : Maruti S. Inaganti

Download or read book Miscible Enhanced Oil Recovery Studies for Schrader Bluff Heavy Oil Reservoir, North Slope of Alaska written by Maruti S. Inaganti and published by . This book was released on 1994 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research and development in enhanced oil recovery

Download Research and development in enhanced oil recovery PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 782 pages
Book Rating : 4.F/5 ( download)

DOWNLOAD NOW!


Book Synopsis Research and development in enhanced oil recovery by : Lewin and Associates

Download or read book Research and development in enhanced oil recovery written by Lewin and Associates and published by . This book was released on 1976 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Oil Production in the Arctic National Wildlife Refuge

Download Oil Production in the Arctic National Wildlife Refuge PDF Online Free

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428922296
Total Pages : 127 pages
Book Rating : 4.4/5 (289 download)

DOWNLOAD NOW!


Book Synopsis Oil Production in the Arctic National Wildlife Refuge by : United States. Congress. Office of Technology Assessment

Download or read book Oil Production in the Arctic National Wildlife Refuge written by United States. Congress. Office of Technology Assessment and published by DIANE Publishing. This book was released on 1989 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Life After CHOPS

Download Life After CHOPS PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (982 download)

DOWNLOAD NOW!


Book Synopsis Life After CHOPS by : Bakul Mathur

Download or read book Life After CHOPS written by Bakul Mathur and published by . This book was released on 2017 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heavy oil reservoirs in Alaska offer major production challenges, including proximity to the permafrost layer, very high viscosity oil and low mechanical strength pay zones. The Ugnu deposits of the Alaska North Slope (ANS) hold more than 6 billion barrels of oil. The dead oil viscosity at reservoir temperature ranges from 1,000 to 1,000,000 cp1. In an effort to sustain well life, this research focuses on the unique set of challenges occurring in the Ugnu reservoir and presents the best possible way to maximize production. The present research accentuates observations derived from the field data, which shows that deliberate sand production with the hydrocarbon stream while employing a Progressive Cavity Pump (PCP) as an artificial lift method has a favorable effect on primary oil recovery. The developments have led to the advent of a technique called Cold Heavy Oil Production with Sand (CHOPS) as an initial production method for shallow heavy oil reservoirs. Sand production leads to the formation of high porosity channels or wormholes that can range up to hundreds of meters. The co-mingling of heavy oil and sand develops foamy oil by creating a bubbly flow inside the reservoir. The combination of these wormholes with the foamy oil behavior are the primary factors that result in enhanced production during CHOPS. One of the major hindrances to its successful application is the selection of the post-CHOPS production method, which is addressed in this study with the help of modeling and simulation. Alternative recovery techniques following the primary cold production include water flooding, polymer injection, miscible gas injection and thermal recovery methods. Water flooding is unviable because of the mobility contrast between the highly viscous oil and water. The high permeability zones provide a bypass for water, consequently producing elevated water cuts. Another aspect unique to Alaskan heavy oil reservoirs is the proximity to the permafrost layer, with the hydrocarbon bearing zone making thermal recovery methods unappealing. Polymer injection and miscible gas injection become the favorable non-thermal secondary and tertiary recovery methods in this case. This study is based on modeling one of the wells drilled into the M80 sands of the Ugnu formation followed by the analysis of post-CHOPS recovery for the well. The CHOPS well modeling is done with the help of a wormhole fractal pattern and a foamy oil model. Simulation of the polymer injection is then employed from a nearby well. The results indicate almost 12% increment in recovery with polymer flooding as compared to the natural depletion. The recovery obtained from the simulations have been analyzed to provide a basis for designing the polymer injection job as an Enhanced Oil Recovery (EOR) method after CHOPS. With the promising results of this study, it can be determined that the Ugnu reservoir sands can be exploited for heavy oil with the help of polymer flooding. It can also be combined with miscible gas flooding or alkali-surfactant flooding to obtain even higher hydrocarbon recoveries.

Low Salinity Cyclic Water Injection for Enhanced Oil Recovery in Alaska North Slope

Download Low Salinity Cyclic Water Injection for Enhanced Oil Recovery in Alaska North Slope PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (429 download)

DOWNLOAD NOW!


Book Synopsis Low Salinity Cyclic Water Injection for Enhanced Oil Recovery in Alaska North Slope by : Sathish S. Kulathu

Download or read book Low Salinity Cyclic Water Injection for Enhanced Oil Recovery in Alaska North Slope written by Sathish S. Kulathu and published by . This book was released on 2009 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Properties and flow pattern of injected water have an impact on properties like rock wettability and oil saturation. Researchers have observed increased oil recovery with low salinity brines and reduced water production with cyclic injection. Low salinity cyclic water injection is an interesting combination to be evaluated for further implementation. Two-phase water-oil flow experiments were conducted on cleaned and oil-aged sandstone cores in a core holder apparatus. At connate water saturation, modified Amott-Harvey tests were performed to study wettability. Cyclic waterfloods were conducted to recover oil. Residual oil saturation (Sor) was calculated after every step. The experiments were repeated with reconstituted brines of different salinity and Alaska North Slope (ANS) lake water. The effect of low salinity waterfloods and oil-aging on wettability alteration was studied. The results were compared with available data from conventional floods performed on the same cores. Cyclic floods were also tested for different pulse intervals. Conventional waterflooding was conducted on recombined oil-saturated cores at reservoir conditions. Faster reduction in Sor and additional oil recovery was observed consistently with low salinity cyclic injection. Oil-aging reduced water wetness of cores. Subsequent low salinity floods restored the water wetness marginally. Shorter pulses yielded better results than longer intervals"--Leaf iii.

Enhanced Oil Recovery

Download Enhanced Oil Recovery PDF Online Free

Author :
Publisher : Editions TECHNIP
ISBN 13 : 9782710810506
Total Pages : 258 pages
Book Rating : 4.8/5 (15 download)

DOWNLOAD NOW!


Book Synopsis Enhanced Oil Recovery by : Marcel Latil

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.

Investigation of Non-thermal Enhanced Oil Recovery Techniques of Heavy Oil Production

Download Investigation of Non-thermal Enhanced Oil Recovery Techniques of Heavy Oil Production PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (654 download)

DOWNLOAD NOW!


Book Synopsis Investigation of Non-thermal Enhanced Oil Recovery Techniques of Heavy Oil Production by :

Download or read book Investigation of Non-thermal Enhanced Oil Recovery Techniques of Heavy Oil Production written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Principles of Enhanced Oil Recovery

Download Principles of Enhanced Oil Recovery PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 9819901936
Total Pages : 283 pages
Book Rating : 4.8/5 (199 download)

DOWNLOAD NOW!


Book Synopsis Principles of Enhanced Oil Recovery by : Caili Dai

Download or read book Principles of Enhanced Oil Recovery written by Caili Dai and published by Springer Nature. This book was released on 2023-05-11 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest progress in enhanced oil recovery technology and introduces the application of various enhanced oil recovery methods in oilfield development. Enhanced oil recovery (EOR) is a continuous theme in oilfield development. Due to the influence of geological conditions, development mode and physical and chemical factors, more than half of the proven oil reserves remain underground and cannot be accessed. Therefore, many enhanced oil recovery methods have been developed to achieve higher oil recovery. This book presents the basic principles and provides the chemistry knowledge related to enhanced oil recovery. It also expounds the applicable criteria of chemical agents. In addition, combined with field application examples, the limitations of existing enhanced oil recovery methods are analyzed, and the future development direction of enhanced oil recovery technology is highlighted. It is worth noting that the integral profile control and water shutoff technology in this book is widely recognized in the enhanced oil recovery industry and has achieved remarkable economic benefits. Given its scope, this book is useful for the scientific and technical personnel engaged in the study of oil recovery chemistry and enhanced oil recovery and also as a teaching reference for teachers and students majoring in petroleum engineering and oilfield chemistry.

Theoretical and Experimental Investigation of Oil Recovery by the Electrothermic Technique

Download Theoretical and Experimental Investigation of Oil Recovery by the Electrothermic Technique PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.:/5 (463 download)

DOWNLOAD NOW!


Book Synopsis Theoretical and Experimental Investigation of Oil Recovery by the Electrothermic Technique by : Samy Abdel-Hakeem El-Feky

Download or read book Theoretical and Experimental Investigation of Oil Recovery by the Electrothermic Technique written by Samy Abdel-Hakeem El-Feky and published by . This book was released on 1977 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This work investigates the feasibility of increasing oil recovery from petroleum reservoirs by the electrothermic technique. A mathematical model was developed for the prediction of reservoir response to heating by alternating electric current flow through the oil-bearing formations. The mathematical model was programmed in FORTRAN for solution on the IBM 370/168. The model used the finite difference technique to represent the differential equations that describe the system, and the sets of difference equations were solved by the Strongly Implicit Procedure (SIP) and Successive Overrelaxation (SOR). In order to verify the mathematical model, a set of experiments was conducted to determine oil recovery from a five-spot laboratory model by cold waterflood and the electrothermic technique. The experimental data were compared with the numerically calculated responses. Agreement between calculated and experimental responses supports the assumptions of the mathematical model and the numerical solution procedure. The mathematical model was utilized to predict the response of single layer and double layer oil reservoirs to the electrothermic process. The results indicate that the approaches described in U.M.R. Patent Disclosure No. 7S-P-UMR-003 might be used for selectively heating the relatively undepleted portions of oil reservoirs"--Abstract, leaf ii.

Technical and Economic Evaluation of the First Ever Polymer Flood Field Pilot to Enhance the Recovery of Heavy Oils on Alaska's North Slope Via Machine Assisted Reservoir Simulation

Download Technical and Economic Evaluation of the First Ever Polymer Flood Field Pilot to Enhance the Recovery of Heavy Oils on Alaska's North Slope Via Machine Assisted Reservoir Simulation PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (132 download)

DOWNLOAD NOW!


Book Synopsis Technical and Economic Evaluation of the First Ever Polymer Flood Field Pilot to Enhance the Recovery of Heavy Oils on Alaska's North Slope Via Machine Assisted Reservoir Simulation by : Cody D. Keith

Download or read book Technical and Economic Evaluation of the First Ever Polymer Flood Field Pilot to Enhance the Recovery of Heavy Oils on Alaska's North Slope Via Machine Assisted Reservoir Simulation written by Cody D. Keith and published by . This book was released on 2022 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer flooding has become globally established as a potential enhanced oil recovery method for heavy oils. To determine whether this technology may be useful in developing the substantial heavy oil resources on the Alaska North Slope, a polymer flood field pilot commenced at the Milne Point Unit in August 2018. This study seeks to evaluate the results of the field pilot on a technical and economic basis. A reservoir simulation model is constructed and calibrated to predict the oil recovery performance of the pilot through machine-assisted reservoir simulation techniques. To replicate the early water breakthrough observed during waterflooding, transmissibility contrasts are introduced into the simulation model, forcing viscous fingering effects. In the ensuing polymer flood, these transmissibility contrasts are reduced to replicate the restoration of injection conformance during polymer flooding. Transmissibility contrasts are later reinstated to replicate fracture overextension interpreted in one of the producing wells. The calibrated simulation models produced at each stage of the history matching process are used to forecast oil recovery. These forecasts are used as input for economic analysis, incremental to waterflooding expectations. The simulation forecasts indicate that polymer flooding significantly increases the heavy oil production for this field pilot compared to waterflooding alone, yielding attractive project economics. However, meaningful variations between simulation scenarios demonstrate that a simulation model is only valid for prediction if flow behavior in the reservoir remains consistent with that observed during the history matched period. Critically, this means that a simulation model calibrated for waterflooding may not fully capture the technical and economic benefits of an enhanced oil recovery process such as polymer flooding. Subsequently, the simulation model and economic model are used in conjunction to conduct a sensitivity analysis for polymer flood design parameters, from which recommendations are provided for both the continued operation of the current field pilot and future polymer flood designs. The results demonstrate that a higher polymer concentration can be injected due to the development of fractures in the reservoir. The throughput rate should remain high without exceeding operating constraints. A calculated point-forward polymer utilization parameter demonstrates the decreasing efficiency of the polymer flood at later times in the pattern life. Future projects will benefit from starting polymer injection earlier in the pattern life. A pattern with tighter horizontal well spacing will observe a greater incremental benefit from polymer flooding.

Enhanced Oil Recovery

Download Enhanced Oil Recovery PDF Online Free

Author :
Publisher : Editions TECHNIP
ISBN 13 : 2710804336
Total Pages : 644 pages
Book Rating : 4.7/5 (18 download)

DOWNLOAD NOW!


Book Synopsis Enhanced Oil Recovery by : Association de recherche sur les techniques d'exploitation du pétrole

Download or read book Enhanced Oil Recovery written by Association de recherche sur les techniques d'exploitation du pétrole and published by Editions TECHNIP. This book was released on 1982 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Enhanced Oil Recovery

Download Enhanced Oil Recovery PDF Online Free

Author :
Publisher : William Andrew
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!


Book Synopsis Enhanced Oil Recovery by : M. M. Schumacher

Download or read book Enhanced Oil Recovery written by M. M. Schumacher and published by William Andrew. This book was released on 1978 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: