FI862981A7
(en )
1987-01-20
Method and apparatus for vertically installing drill rods in an oil drilling rig.
NO881947L
(en )
1988-11-07
PROCEDURE AND DEVICE FOR DEEP WATER DRILLING.
NO982479D0
(en )
1998-05-29
Method and apparatus for characterizing effluents from oil wells
NO894795D0
(en )
1989-11-30
PROCEDURE AND APPARATUS FOR DETERMINING A PROPERTY IN THE MOVEMENT OF A DRILL STRING.
BR8405236A
(en )
1985-08-27
DEVICE AND METHOD FOR TREATING DRILLING MUD RECEIVED FROM A PIT, SYSTEM AND DEVICE FOR DRILLING A PIT
NO175688C
(en )
1994-11-16
Process for extracting petroleum from an underground reservoir using surfactants
NO941239D0
(en )
1994-04-06
Method and apparatus for locating and returning to one or more horizontal wells using a mandrel device
NO178877C
(en )
1996-06-19
Method and apparatus for processing seismic data by correlation
IT9019607A0
(en )
1990-03-08
APPARATUS AND METHOD FOR TIGHTLY CLOSING DRILLING WELLS
GB2237306B
(en )
1993-08-04
Method for treating subterranean formations
NO156728C
(en )
1987-11-11
DEVICE FOR COLLECTION OF OIL FROM WATER AND FROM THE WATER SURFACE.
DE69114199D1
(en )
1995-12-07
Process for cementing oil and gas wells.
DE69026915D1
(en )
1996-06-13
Downhole drilling fluid testing method
NO20035039D0
(en )
2003-11-13
Method and apparatus for testing a formation fluid sample obtained from a geological formation drilled by a well
NO811446L
(en )
1981-11-23
PROCEDURE AND DEVICE FOR SIGNALING IN A Borehole during drilling.
FI920904A7
(en )
1992-02-28
Flotation device and method for borehole casing pipe
EP0657619A4
(en )
1998-01-07
Process for extracting hydrocarbons from subterranean formations.
IT8819865A0
(en )
1988-03-21
METHOD AND DEVICE FOR CONTROLING ROCK DRILLING.
GB2199871B
(en )
1990-12-12
Process and apparatus for oil well drilling and completing operations in deep water
NO922103D0
(en )
1992-05-27
PROCEDURE AND APPARATUS FOR REMOVING OIL FROM DRILL
ES497672A0
(en )
1982-02-01
AN IMPROVED METHOD OF DRILLING OF PROBING WELLS.
IS3578A7
(en )
1990-11-24
Method and apparatus for extracting genuine water samples from wells or springs by drilling
NO996255D0
(en )
1999-12-16
Method and apparatus for drilling undersea wells
NO884458D0
(en )
1988-10-07
METHOD AND APPARATUS FOR WATER REMOVAL FROM HYDROCARBONES AND HALOGENATED HYDROCARBONES.
DE3865064D1
(en )
1991-10-31
DEVICE FOR CLOSING A CORE DRILLING DEVICE IN A DRILL STRING.