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Steam assisted gravity drainage
SPE Res Eval & Eng 20 (03): 681–697.
Paper Number: SPE-180737-PA
Published: 30 September 2016
...Arun Venkat Venkatramani; Ryosuke Okuno Summary Experimental data have shown that the solubility of water in the oleic ( L ) phase ( x wL ) can be significant at elevated temperatures. However, x wL was not properly considered in prior studies of steam-assisted gravity drainage (SAGD) and expanding...
SPE J. 18 (04): 736–742.
Paper Number: SPE-163136-PA
Published: 22 April 2013
... because of its high viscosity, which is typically in the hundreds of thousands to millions of centipoises. In steam-assisted gravity drainage (SAGD), steam injected into the formation heats oil at the edge of a depletion chamber, thus raising the mobility, k o /μ o , of bitumen. Three main effects account...
Paper presented at the International Oil and Gas Conference and Exhibition in China, June 8–10, 2010
Paper Number: SPE-130802-MS
... Abstract Coinjecting solvent with steam under steam assisted gravity drainage (SAGD) process to reduce the required steam for production has gained importance in recent years. An extensive 2D simulation study to better understand the drainage mechanism of steam with solvent coinjection...
SPE Res Eval & Eng 22 (04): 1615–1629.
Paper Number: SPE-195675-PA
Published: 15 May 2019
...David Dixon; Anthony Nguyen Summary Presented here is a steam–assisted–gravity–drainage (SAGD) forecasting technique for oil and water production and steam injection based on linear steam–chamber geometry and an empirical form for the progression of the steam/oil interface with time. The oil...
Publisher: Society of Exploration Geophysicists
Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-3889
... ABSTRACT The cold production process, driven by a depletion in a mobile heavy oil fields, is characterized by limited recovery rates of about 10 %. To improve the production efficiency, thermal recovery techniques such as Steam Drive (SD) or Steam Assisted Gravity Drainage (SAGD) have been...
SPE Res Eval & Eng 21 (02): 418–432.
Paper Number: SPE-180722-PA
Published: 01 January 2018
... steam-assisted-gravity-drainage (SA-SAGD) are solvent selection, injection strategy, and solvent retention in situ. The role of geomechanics in optimal application of SA-SAGD, however, remains largely unexplored. Recent studies suggest that solvent transport, solvent-dilution effect, and the temperature...
Paper presented at the SPE Thermal Well Integrity and Design Symposium, November 19–21, 2019
Paper Number: SPE-198696-MS
.... Abstract Steam-assisted gravity drainage (SAGD) is the most common recovery method for bitumen reservoirs in Western Canada. This method basically consists of a producer and injector, built in parallel, one on top of the other. During the normal operation phase (or SAGD mode), the top well injects steam...
Paper presented at the SPE Canada Heavy Oil Technical Conference, June 9–11, 2015
Paper Number: SPE-174429-MS
... Abstract Solvent Assisted-Steam Assisted Gravity Drainage (SA-SAGD) process is an enhancement to SAGD recovery technology. In this process a hydrocarbon solvent is injected simultaneously with steam to accelerate the oil production rate and reduce steam-to-oil ratio (SOR) compared to classical...
SPE J. 24 (02): 477–491.
Paper Number: SPE-194016-PA
Published: 31 December 2018
...Enrique Gallardo; Clayton V. Deutsch Summary Steam-assisted gravity drainage (SAGD) is a thermal-recovery process to produce bitumen from oil sands. In this technology, steam injected in the reservoir creates a constantly evolving steam chamber while heated bitumen drains to a production well...
SPE Res Eval & Eng 22 (03): 1030–1048.
Paper Number: SPE-187182-PA
Published: 05 October 2018
...Kwang Hoon Baek; Kai Sheng; Francisco J. Argüelles-Vivas; Ryosuke Okuno Summary Dimethyl ether (DME) was investigated as a potential additive to steam to improve steam‐assisted gravity drainage (SAGD) in a previous simulation study. The main objective of this research is to compare DME with n...
Paper presented at the SPE Heavy Oil Conference-Canada, June 11–13, 2013
Paper Number: SPE-165485-MS
... advantages relative to traditional heavy oil recovery processes, there are a variety of challenges that must be addressed and overcome before commercial application. One especially promising technology is the Solvent Assisted – Steam Assisted Gravity Drainage (SA-SAGD) process. In the SA-SAGD process...
Paper presented at the SPE Trinidad and Tobago Section Energy Resources Conference, June 25–26, 2018
Paper Number: SPE-191173-MS
... produces liquid at a constant speed. The oil production rate is shown in Figure. 2 . Abstract Very limited studies were done on the superheated steam-assisted-gravity-drainage (SAGD) process. Besides, study of the effect of physical heating of steam at different state on the productivity during...
SPE J. 23 (04): 1201–1222.
Paper Number: SPE-184983-PA
Published: 20 February 2018
...Kai Sheng; Ryosuke Okuno; Mingyuan Wang Summary Coinjection of solvent with steam results in lower chamber-edge temperatures than those in steam-assisted gravity drainage (SAGD), which enables the decrease of heat losses to the overlying formation rocks. However, use of highly volatile solvents...
SPE Res Eval & Eng 20 (04): 0937–0956.
Paper Number: SPE-185952-PA
Published: 21 July 2017
... different hydrocarbon additives can be coinjected with steam in expanding-solvent steam-assisted-gravity-drainage (ES-SAGD) processes, the inventors of the ES-SAGD process (Nasr et al. 1991 , 2002 ; Nasr and Isaacs 2001 ; Nasr and Ayodele 2006 ) found it preferable to use a solvent with a saturation...
Publisher: American Rock Mechanics Association
Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0097
... ABSTRACT: Steam-assisted gravity drainage (SAGD) is a popular practice for enhanced production of heavy oil. Steam fingering is an important characteristic of steam chamber expansion in the process of SAGD.A set of fully coupled thermo-hydro-mechanical constitutive models are adopted...
Paper presented at the SPE Improved Oil Recovery Symposium, April 24–28, 2010
Paper Number: SPE-129847-MS
... Abstract Steam-assisted gravity drainage (SAGD) is a promising approach for recovering heavy and viscous oil. The success of SAGD relies on two key operations: uniform formation of the steam chamber along the full length of the injector, and effective control of steam breakthrough by sustaining...
SPE J. 21 (02): 353–363.
Paper Number: SPE-170094-PA
Published: 14 April 2016
...Mahdie Mojarad; Hassan Dehghanpour Summary Recently, different models were proposed to describe two- and three-phase flow at the edge of a steam chamber developed during a steam-assisted-gravity-drainage (SAGD) process. However, 2D-scaled SAGD experiments and recent micromodel visualizations...
SPE Res Eval & Eng 19 (02): 305–315.
Paper Number: SPE-174408-PA
Published: 03 March 2016
... heat-loss modeling is still a challenge by use of the existing wellbore simulators. This challenge becomes even greater when complex but common wellbore configurations, such as multiparallel or multiconcentric tubings, are used in thermal processes such as steam-assisted gravity drainage (SAGD...
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-661
... Abstract This paper determined the optimum operations of steam assisted gravity drainage covering steam interference between vapor chambers in a heterogeneous oil-sands deposit. The objective value was the minimum cumulative steam to oil ratio that represented energy efficiency. Three well...
Paper presented at the SPE Western Regional Meeting, April 27–30, 2015
Paper Number: SPE-174074-MS
... on the discussion of the development of ANN-based proxy models studying steam assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS) procedures. The proxy models will consider rock and fluid properties such as relative permeability and temperature dependent fluid viscosity as variables so...
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