Results 111 to 120 of about 14,885 (159)

Mathematical Modeling of Steam Assisted Gravity Drainage

SPE International Thermal Operations and Heavy Oil Symposium and Western Regional Meeting, 2004
Abstract A mathematical model for gravity drainage in heavy-oil reservoirs and tar sands during steam injection in linear geometry is proposed. The mathematical model is based on the experimental observations that the steam zone shape is an inverted triangle with the vertex fixed at the bottom production well.
openaire   +1 more source

Left Heart Decompression by Closed Gravity Drainage

The Annals of Thoracic Surgery, 1972
Abstract Decompression of the left ventricle by closed gravity drainage into the venous return reservoir was found to be an especially useful adjunct in coronary artery surgery. The preferred technique of transatrial cannulation of the left ventricle affords efficient left heart decompression during heart-lung bypass and is used for direct measurement
G E, Green, H A, Mekhjian
openaire   +2 more sources

Oil Recovery by Gravity Drainage

Society of Petroleum Engineers Journal, 1980
Abstract Recent observations have indicated surprisingly high oil recoveries for gravity drainage. This has prompted us to reexamine gravity drainage as an oil recovery process. It is shown that oil relative permeability is a key factor.
openaire   +1 more source

Gravity, Blink Rate, and Lacrimal Drainage Capacity

American Journal of Ophthalmology, 1997
To investigate the influence of gravity and blink rate on lacrimal drainage capacity and to learn whether lacrimal pump function can be measured with the drop test.The drop test for lacrimal drainage capacity was performed in 20 test subjects, aged 12 to 30 years. Drops of a known volume of lukewarm saline solution were repeatedly instilled in the tear
S, Sahlin, E, Chen
openaire   +2 more sources

Gravity Drainage in Oil Fields

Transactions of the AIME, 1944
Abstract Gravity drainage is the self-propulsion of oil downward in the reservoir rock.Under favorable natural and operational conditions, it has been found to effectrecoveries comparable to water displacement. With modern technical knowledge, the operator can often make a choice between dissolved gas drive, water ...
openaire   +1 more source

Gravity drainage in porous media: the effect of wetting

Journal of Petroleum Science and Engineering, 2003
In order to relate the wetting properties at the pore scale to the macroscale hydrodynamics, a series of benchmark experiments on the effect of the wetting on flow in porous media were performed. Gravity drainage of hexane (oil) in a model porous medium consisting of water-wet sand was studied using γ-ray densitometry and weight measurements.
Shahidzadeh, Noushine, Bertrand, Emanuel, Dauplait, J.-P., Borgotti, J.-C., Vié, P., Bonn, Daniel   +5 more
openaire   +2 more sources

Effect of Wetting on Gravity Drainage in Porous Media

Transport in Porous Media, 2003
A series of benchmark experiments on the effect of the wetting state on the flow properties in porous media were performed, allowing us to relate the wetting properties at the pore scale to the macroscale hydrodynamics. Drainage of n-alkanes (oils) displaced by air in a model porous medium consisting of water-wet sand was studied using gamma-ray ...
Shahidzadeh, Noushine, Bertrand, Emanuel, Dauplait, J.-P., Borgotti, J.-C., Vié, P., Bonn, Daniel   +5 more
openaire   +2 more sources

Capillary, viscous and gravity forces in gas-assisted gravity drainage

Journal of Petroleum Science and Engineering, 2014
Abstract The capillary, viscous and gravity forces were analyzed by performing numerical simulations of gas assisted gravity drainage (GAGD) process. The analysis was conducted using three dimensionless groups: capillary number (the ratio between the viscous and the capillary forces), bond number (the ratio between the gravity and the capillary ...
Ernesto Vargas Bautista, Jennys Lourdes Meneses Barillas, Tarcilio Viana Dutra, Wilson da Mata   +3 more
openaire   +1 more source

GRAVITY DRAINAGE IN HAND INFECTIONS

JAMA: The Journal of the American Medical Association, 1930
To the Editor: —In reply to the criticism of Dr. Douglas W. Owen (The Journal, Dec. 7, 1929, p. 1828) of my article on Gravity Drainage (The Journal, Oct. 5, 1929, p. 1083), he has apparently misconstrued my position on the subject since he states that "in the examples cited a lack of knowledge of the anatomy of the lymphatics of the hand has led to ...
openaire   +1 more source

Gravity Drainage To Horizontal Wells

Journal of Canadian Petroleum Technology, 1992
Abstract Pressure depletion and high water-oil ratios limit the recovery which can be obtained from many oil reservoirs using conventional methods, to disappointingly low values. The maintenance of pressure by water injection (waterflooding) or by gas injection can be relatively ineffective because
openaire   +1 more source