MX160570A
(en )
1990-03-27
IMPROVEMENTS IN THE DRILLING DRILL FOR DRILLING OIL OR SIMILAR WELLS
IT1197845B
(en )
1988-12-06
PAVILION REMOVABLE PARTICULARLY FOR THE TEMPORARY RECOVERY OF PEOPLE
FI944839A0
(en )
1994-10-14
Rock drilling equipment
NO951638L
(en )
1995-06-28
wellbore fluid
IT1214419B
(en )
1990-01-18
ACTIVATED DRILL AND DRILLING METHOD
ITBZ940062A0
(en )
1994-11-25
DEVICE FOR DEEP DRILLING OF CONDUCTIVE PLATES OR SIMILAR.
IT1219787B
(en )
1990-05-24
PROCEDURE AND EQUIPMENT FOR DRILLING AND COMPLETION OF DEEP WATER OIL WELLS
AR240351A1
(en )
1990-03-30
APPARATUS FOR DRILLING EARTH WELLS AND METHODS RELATED TO THE SAME.
IT8622328A0
(en )
1986-11-13
PROCEDURE FOR THE PREDICTION OR OBSERVATION OF NATURAL OR ARTIFICIALLY INDUCED SEISMICITY AS WELL AS THE PREVENTATIVE PROTECTION OF BUILDINGS.
IT9067246A0
(en )
1990-04-03
EQUIPMENT FOR ROCK DRILLING
IT8946103A0
(en )
1989-03-01
EQUIPMENT FOR THE RECOVERY OF PEOPLE IN ARTESIAN WELLS OR SIMILAR
IT8919506A0
(en )
1989-02-21
USE OF MANGANESE OXIDE IN DRILLING SLUDGES AND IN CEMENT SUSPENSIONS FOR OIL WELLS.
ITBO960591A0
(en )
1996-11-19
SYSTEM TO LOWER DEPTH EQUIPMENT INTO HYDROCARBONS WELLS
NO940738L
(en )
1994-09-05
Downhole Pump
IT8967178A0
(en )
1989-03-14
ATTACHABLE SPINDLE FOR THE CON TROLING OF WELLS
KR940019385U
(en )
1994-08-19
Borehole drilling equipment
NO951492D0
(en )
1995-04-20
Wellbore anchor
BR8900855A
(en )
1990-10-02
EQUIPMENT FOR CONDUCTING DRILLING OPERATIONS AND COMPLETION OF OIL WELLS IN DEEP WATERS
IT8548924A0
(en )
1985-12-13
IMPROVED DEVICE FOR DRILLING AND CASING WELLS
IT8947975A0
(en )
1989-05-19
EARTHQUAKE-RESISTANT AND DRAINAGE WELLS FOR THE STABILIZATION OF DEEP LANDSLIDES
KR910020370U
(en )
1991-12-20
Drilling rig
IT1225388B
(en )
1990-11-13
DEVICES AND METHOD FOR THE SUSPENSION AND ANCHORING OF COLUMNS OF PIPES FOR PETROLEUM OR GASIFIER WELLS
ITFO910008A1
(en )
1992-10-19
EQUIPMENT SUITABLE FOR THE FIRE EXTINGUISHING IN OIL WELLS
IT8941700A0
(en )
1989-09-20
FILTER STRUCTURE PARTICULARLY FOR WELLS AND/OR DRAINAGE PIPES.
IT9067389A0
(en )
1990-05-28
PROCEDURE AND APPARATUS FOR THE EXTRACTION OF SHALE GAS