MX153317A
(en )
1986-09-12
IMPROVED METHOD FOR RECOVERING OIL AND SIMILAR SUBSTANCES FROM UNDERGROUND FORMATION
ES532010A0
(en )
1986-06-16
PROCEDURE TO RECOVER HYDROCARBONS FROM AN UNDERGROUND FORMATION
MX144718A
(en )
1981-11-18
IMPROVED PROCEDURE FOR OBTAINING OIL AND BETUN FROM AN UNDERGROUND FIELD
MX160633A
(en )
1990-03-29
IMPROVED METHOD FOR MOVING OIL WITHIN AN UNDERGROUND OIL CONTAINING OIL
AR217338A1
(en )
1980-03-14
OIL RECOVERY DEVICE
BR7801605A
(en )
1979-03-27
OIL RECOVERY PROCESS FROM AN UNDERGROUND RESERVOIR
BR7804877A
(en )
1979-07-10
PROCESS FOR PETROLEUM RECOVERY FROM A PERMANIBLE UNDERGROUND FORMATION CONTAINING PETROLEUM
NO782390L
(en )
1979-01-09
MICROEMULATIONS FOR PETROLEUM EXTRACTION
MX150771A
(en )
1984-07-13
IMPROVED METHOD FOR OBTAINING ADEME DRILLINGS
NO151511C
(en )
1985-04-24
DRILL CROSS FOR MOUNTAIN DRILLING
NL187350C
(en )
1991-09-02
METHOD FOR REMOVING NITROSAMINS
NO791889L
(en )
1980-03-25
PROCEDURE FOR OIL EXTRACTION FROM UNDERGROUND OIL SOURCES
AR224895A1
(en )
1982-01-29
A METHOD OF RECOVERING OIL FROM AN OIL FORMATION
NL7809624A
(en )
1979-03-26
METHOD FOR CLEARING WATER.
BR8000293A
(en )
1980-10-21
PROCESS TO RECOVER OIL FROM AN UNDERGROUND FORMATION CONTAINING OIL
BR8008635A
(en )
1981-07-28
METHOD FOR EXTRACTION OF SHALE OIL
BR7704274A
(en )
1978-04-11
PROCESS FOR RECOVERING PETROLEUM FROM AN UNDERGROUND FORMATION CONTAINING PETROLEUM
MX5041E
(en )
1983-02-25
IMPROVED METHOD FOR THE RECOVERY OF HYDROCARBONS FROM ITS UNDERGROUND FIELD
GB2011503B
(en )
1982-02-17
Viscous oil recovery method
IT7867126A0
(en )
1978-01-23
CEMENT FOR OIL WELLS
MX153928A
(en )
1987-02-24
IMPROVED PROCESS FOR THE RECOVERY OF OIL IN AN UNDERGROUND MANTLE
MX6610E
(en )
1985-08-16
IMPROVED METHOD FOR RECOVERING OIL FROM AN UNDERGROUND FORMATION
MX5948E
(en )
1984-09-04
IMPROVED METHOD FOR RECOVERING OIL FROM AN UNDERGROUND FORMATION
GB2062063B
(en )
1983-04-13
Method for recovering oil from an underground formation
MX150350A
(en )
1984-04-23
IMPROVED MINING THERMAL METHOD FOR OIL PRODUCTION