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Showing 1 to 20 of 30 for “"Steam Assisted Gravity Drainage"”.
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Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery.
… designed enhanced oil recovery processes like Steam Assisted Gravity Drainage and the success of such technologies are critically dependent on accurate knowledge of reservoir, well and fluid properties of oil under variety of pressure and temperature conditions. This research project has …
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Experimental Studies on Solvent Screening and Performance Analysis for Bitumen Recovery Using ES-SAGD
… in-situ thermal methods, notably Steam-Assisted Gravity Drainage (SAGD). While SAGD is commercially proven, it is limited by a high Steam-to-Oil Ratio (SOR) and substantial environmental impact. The Expanding Solvent Steam Assisted Gravity Drainage (ES-SAGD) process is a hybrid …
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A Calculation Model for Steam Property Variation Along Wellbore Trajectory in SAGD Process
Steam-Assisted Gravity Drainage is an effective approach for recovering heavy oil and bitumen and its essence idea is to introduce steam heat into cold reservoir and reduce oil viscosity. In a typical SAGD process, two horizontal wells were drilled inside the target formation, one is put on the top …
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Application of Polymer and Nanomaterials for Improving Heavy Oil Recovery
… portion of oil can be produced and recovered. Steam-assisted gravity drainage (SAGD), used as a common technique to produce heavy oil in Canada (specifically in oil sands reservoirs), requires a lot of energy and negatively impacts the environment. Using environmentally friendly and …
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On Steam Based Recovery Process Design
Steam-based thermal recovery process is the most commonly used recovery process for bitumen production from oil sands reservoirs. The most used thermal methods are Steam Flooding (SF), Cyclic Steam Stimulation (CSS), and Steam Assisted Gravity Drainage (SAGD). The choice of method depends on the …
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Improving Indigenous Engagement and Consultation for Oil Sands Development in the Regional Municipality of Wood Buffalo, Alberta, Canada
… with environmental assessment for nine Steam Assisted Gravity Drainage (SAGD) oil sands developments in the Regional Municipality of Wood Buffalo, Alberta, Canada. It presents and applies a new framework designed to help identify opportunities to improve Indigenous participation in …
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Comparison of CSS and SAGD in Cold Lake
… deposits within oil-sands reservoirs. Cyclic Steam Stimulation (CSS) has been a commercial recovery process since the mid 1980’s in the Cold Lake area in northeast Alberta. Also, Several Steam-Assisted Gravity Drainage (SAGD) projects are in operation in different types of reservoirs in the …
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Evaluation of Propane-Butane Mixtures as Solvent in ES-SAGD
SAGD (Steam Assisted Gravity Drainage) is a thermal recovery process for production of nearly immobile bitumen from the deeper oil-sand formation. In this method, two parallel horizontal wells are drilled near the reservoir bottom, one about 5 m higher than the other. Steam injected through the …
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Stability of Depletion Chamber Edges in Oil Sands Recovery Processes
Many modifications to Steam-Assisted Gravity Drainage (SAGD) have been proposed to make the steam-based recovery process more efficient and profitable. A common approach is coinjection of additives with steam. There are two general classes of additives: first, solvents that dilute the bitumen …
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Removal of acid-extractable organics from oil sands process-affected water using carbon-based adsorbents
… and tested for the removal of AEO from steam-assisted gravity drainage (SAGD) water and OSPW. The role of physical properties of AC for AEO removal was investigated. The surface area and total pore volume of AC were positively correlated with AEO removal of SAGD water and OSPW.The impact …
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Elevated temperature mechanical properties of line pipe steels
… range for steels used in oil production by the steam assisted gravity drainage process. Elevated temperature tensile testing was conducted on commercially produced as-received plates at engineering strain rates of 1.67 x 10 4, 8.33 x 10 4, and 1.67 x 10 3 s 1. The acicular ferrite (X70) line …
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Study on the Feasibility of Nitrogen Huff-N-Puff in Heavy Oil Reservoirs
… 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 from 1000 to 2000 m. In these …
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Investigation of Initial Water Mobility and its Effects on SAGD Performance in Oil Sands
Steam-assisted gravity drainage (SAGD) has become a primary commercial in-situ thermal recovery method for oil sands in Alberta. Evidence of initial water mobility during the SAGD process has been observed by many previous field studies. However, no its effective determination method and little …
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Screening Geostatistical Realizations for SAGD Reservoir Simulation
… feasibility of bitumen recovery using the steam-assisted gravity drainage (SAGD) process strongly depends on the heterogeneities that exist in the petrophysical properties of the reservoir. Petrophysical properties and geological features are normally estimated based on known well data and …
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Insights on the Thermal Efficiency of SAGD from Data Analytics
… in this thesis explores three aspects of Steam-Assisted Gravity Drainage (SAGD) oil recovery using public information, with the aim of uncovering new insights about field performance that cannot be deduced from reservoir physics alone. Topics are chosen by the amount and type of public …
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Density and Viscosity of Light and Heavy Phases from Mixtures of Bitumen and Solvent
Solvent-assisted heavy oil recovery methods, such as Solvent Assisted – Steam Assisted Gravity Drainage (SA-SAGD), are an alternative to traditional thermal techniques that can reduce their water and energy requirements. In these processes, condensed water and a mixture of bitumen and solvent drain …
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A Numerical Simulation Study of the N-SolvTM Process
… consumption and greenhouse gas emissions than Steam-Assisted Gravity Drainage (SAGD), solvent based recovery processes are a potential alternative. Vapor Extraction (VAPEX) and N-SolvTM are two potentially competing solvent recovery processes that offer water-free operation. Although VAPEX has …
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Behaviour of locked sand during cavity expansion
… understanding of the stress-dilatancy and drainage properties of sands. These deposits have a dense locked sand structure with high viscosity bitumen occupying a large portion of their void space. Steam Assisted Gravity Drainage is a method widely used for extraction of oil from these …
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Energy Recovery from Oil Sands Reservoirs
… injected high pressure and temperature saturated steam into the reservoir. One such process, Steam-Assisted Gravity Drainage (SAGD), has been proven to produce bitumen, but due to steam generation has high emissions intensity with large energy requirements. The research presented here studied the …
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