Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 72 for “"Oil reservoirs"”.
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Compositional modeling of gas injection in tight oil reservoirs
The commercial development of tight oil reservoirs has reshaped the landscape of the petroleum industry in North America. However, the recovery factor (RF) of tight oil with primary depletion is very low, mostly below 10%. With a large volume of remaining oil in tight oil reservoirs, the successful …
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Investigation into the impact of biosurfactant in heavy oil reservoirs
Exploitation of oil resources in mature reservoirs is essential for meeting future energy demands. Despite the primary and secondary oil recovery, significant amount of residual oil is still left behind in the reservoir, necessitating tertiary recovery methods. These typically includes surfactant …
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Enhanced Cyclic Solvent Process (ECSP) for Thin Heavy Oil Reservoirs
… low production rate and is not suitable for thin reservoirs due to lack of efficient gravity drainage. Cyclic solvent process (CSP) has been proposed to improve the production rate of solvent processes. A major problem of CSP is that during production, the reservoir pressure has to be greatly …
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A space-time adaptive method for flows in oil reservoirs
… media, with specific applications to flows in oil reservoirs. A fully unstructured discretization of space and time is used instead of a conventional time-marching approach. For d-dimensional spatial problems, this requires the generation of (d+1)-dimensional meshes, where time is treated as an …
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Pressure Pulsing Potential During Waterflooding and CO2 Flooding of Heavy Oil Reservoirs
… hydrocarbons. Society has become so dependent on oil and natural gas that no one can imagine life without the resources. Oil and gas deposits are limited and the main portion of conventional reservoirs is at a late stage of development, hence, the market price for oil and gas is continuously …
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Evaluation of Low Saline “Smart Water” Enhanced Oil Recovery in Light Oil Reservoirs
… driving forces responsible for pushing the oil from reservoirs and declining oil recovery after the secondary recovery stage, emphasis is now on EOR techniques. Low saline water (LSW) flooding is a type of EOR that has gained immense attention among researchers due to its ease of use, lower …
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Study on the Feasibility of Nitrogen Huff-N-Puff in Heavy Oil Reservoirs
For heavy reservoirs, conventional oil recovery methods are polymer flooding and Steam-assisted Gravity Drainage (SAGD). Such methods are affected by various factors including reservoir thickness, formation heterogeneity, heat loss, and cost, especially in heavy oil reservoirs with depths ranging …
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Performance Evaluation of an Enhanced Cyclic Solvent Process (ECSP) for Thin Heavy Oil Reservoirs
Canada’s energy future depends on heavy oil resources, which are mainly located in Western Canada, i.e., Saskatchewan and Alberta, and account for almost half of the total world heavy oil reserves. At present, only 8-9% of the original oil in place (OOIP) can be recovered in such heavy oil …
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Simulations of subsurface multiphase flow including polymer flooding in oil reservoirs and infiltration in vadose zone
With the depletion of oil reserves and increase in oil price, the enhanced oil recovery methods such as polymer flooding to increase oil production from water flooded fields are becoming more attractive. Effective design of these processes is challenging because the polymer chemistry has a strong …
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Capillary pressure curve and liquid permeability estimation in tight oil reservoirs using pressure decline versus time data
Estimating oil recovery from shale is a difficult process because organic mudrocks have very low permeability (10nD - 100nD), high kerogen and clay content, a complex pore structure and low porosity (typically less than 10%). In addition, most of the pore sizes in organic mudrocks are within the …
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A Novel Automatic History Matching Method and Upscaling Study of Cyclic Solvent Injection Process for Post-Chops Heavy Oil Reservoirs
… scales. A typical western Canadian heavy oil sample with a viscosity of 4,830 cp at the reservoir conditions was used in these nine tests. Additionally, numerical simulation models were established to simulate the tests. A modified genetic algorithm (GA) based history matching method (MGA) …
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Application of Polymer and Nanomaterials for Improving Heavy Oil Recovery
… in Canada. A major source of energy is oil extracted from underground petroleum reservoirs. Utilizing current technology and equipment, only a small portion of oil can be produced and recovered. Steam-assisted gravity drainage (SAGD), used as a common technique to produce heavy oil in …
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Analytical design method for cold production of heavy oil with bottom water using Bilateral Sink Wells
Few heavy oil reservoirs with strong bottom water drives have been developed successfully because of severe water coning. Water coning tends to cause low ultimate recovery, low well productivity, and high water production. Although thermal and gravity-assisted methods might improve recovery in oil …
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Theoretical and experimental investigation of oil recovery by the electrothermic technique
… 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 …
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Chemical treatment and gas huff-n-puff for enhanced oil recovery in oil shale reservoirs
Shale oil contributes more than 60% to the US oil production. Shale oil production has been feasible because of technological development for horizontal wells with multistage hydraulic fracturing. However, after primary production, more than 90% of the oil is left behind in shale oil reservoirs due …
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Carbon Dioxide Flooding Induced Geochemical Changes in a Saline Carbonate Aquifer
… dioxide (CO2) has been injected into depleted oil reservoirs for enhanced oil recovery for several decades. Injection of CO2 into geologic formations in the Williston Basin is currently under consideration for long-term CO2 storage to reduce anthropogenic CO2 emissions to the atmosphere. The …
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Mobility control of chemical EOR fluids using foam in highly fractured reservoirs
Highly fractured and vuggy oil reservoirs represent a challenge for enhanced oil recovery (EOR) methods. The fractured networks provide flow paths several orders of magnitude greater than the rock matrix. Common enhanced oil recovery methods, including gases or low viscosity liquids, are used to …
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