Results 111 to 120 of about 5,027,220 (166)

Novel Expanding Solvent-SAGD Process "ES-SAGD"

Journal of Canadian Petroleum Technology, 2002
Abstract The steam assisted gravity drainage (SAGD) process has been successfully tested in field pilots, and commercial applications are currently underway by a number of oil companies. The process yields higher oil rates and faster reservoir depletion, as compared to other in situ oil recovery processes.
T.N. Nasr, G. Beaulieu, H. Golbeck, G. Heck   +3 more
openaire   +2 more sources

Characterization of Reservoir Heterogeneity for SAGD and ES-SAGD: Under What Type of Heterogeneity is ES-SAGD More Likely to Lower SOR?

SPE Annual Technical Conference and Exhibition, 2017
Abstract Expanding-solvent steam-assisted gravity drainage (ES-SAGD) is a potential method to reduce steam-oil ratio (SOR) of SAGD, which is a critical concern especially for highly-heterogeneous reservoirs. The main objective of this research is to investigate the flow characteristics of heterogeneous reservoirs in which solvent is more
Arun Venkat Venkatramani, Ryosuke Okuno
openaire   +2 more sources

Geomechanical and Thermal Simulation of ES-SAGD Process

Canadian Unconventional Resources Conference, 2011
Abstract Overlying top water and gas thief zones have a detrimental effect on the Steam-Assisted Gravity Drainage (SAGD) recovery process since steam penetrates into these zones which results in great heat loss. Due to the presence of these top thief zones, recovering bitumen by the SAGD process has become challenging for the Athabasca ...
Hui Deng, Zhangxin Chen, Xia Bao, Yizheng Wei, Hui Liu, Chao Dong   +5 more
openaire   +2 more sources

Testing and History Matching ES-SAGD (Using Hexane)

SPE Western Regional Meeting, 2010
Abstract For the first time, we present in public domain, experimental and history-matched results of 2D scaled laboratory testing of ES-SAGD with hexane as the co-injected solvent. Experimental results of ES-SAGD (with hexane) were also compared with the equivalent SAGD.
Oluropo Ayodele, Tawfik Nasr, John Ivory, Gilles Beaulieu, Gordon Heck   +4 more
openaire   +2 more sources

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Impact of shale barriers on performance of SAGD and ES-SAGD — A review

Fuel, 2021
Abstract The negative impact of reservoir heterogeneity such as shale barriers on oil production and recovery is well-known in the oil industry. Shales usually have very low permeability which degrades the transmissibility of fluid flowing to the wellbore.
Hassan Hassanzadeh
exaly   +2 more sources

ES-SAGD Relative Permeability as a Function of Temperature and Solvent Concentrations

SPE Canada Heavy Oil Technical Conference, 2017
Abstract Relative permeability plays a significant role in predicting oil rate and ultimate oil recovery factor. The literature reveals that same set of relative permeability is often used to predict the ES-SAGD performance regardless of not only the downhole operating temperature but also the injected solvent concentration.
M. Zeidani, B. B. Maini, Z. Chen
openaire   +2 more sources

Efficient oil displacement near the chamber edge in ES-SAGD

Journal of Petroleum Science and Engineering, 2014
Abstract Steam-assisted gravity drainage (SAGD) is the most widely used method for in-situ bitumen recovery. Expanding-solvent-SAGD (ES-SAGD) has been proposed as an alternative to SAGD to improve its efficiency. In ES-SAGD, steam is coinjected with a small amount of solvent. Detailed oil recovery mechanisms near the chamber edge are little known due
Ryosuke Okuno, Tayfun Babadagli
exaly   +2 more sources

Modeling of Asphaltene Precipitation Due to Steam and n-alkane Co-injection in the ES-SAGD Process

Canadian Unconventional Resources Conference, 2011
Abstract The world energy demand is continuously increasing. Therefore heavy oil and bitumen reservoirs are driving more attentions for world energy supply. There are large amount of bitumen reserves in Canada. Only very small portion of bitumen reserves (~15%) in Alberta is mineable, and rest must be recovered using in-situ techniques ...
Amin Badamchizadeh, Bruce F. Kohse, Anjani Kumar   +2 more
openaire   +2 more sources

Investigation of Low Pressure ES-SAGD

International Thermal Operations and Heavy Oil Symposium, 2008
Abstract SAGD is a commercially proven technology for Athabasca reservoirs. It produces high oil rates and high ultimate recoveries. Injecting a solvent with the steam can reduce required steam rates and/or improve oil rates and recovery. Oil viscosity is reduced both thermally and by solvent dissolution.
John Ivory, Rong Zheng, Tawfik Nasr, Xiaohui Deng, Gilles Beaulieu, Gord Heck   +5 more
openaire   +1 more source