EP0232891A3
(en )
1989-03-01
Drilling tool for deep wells
BR8401917A
(pt )
1984-11-27
Gabarito submarino para perfuracao de pocos em jazidas petroliferas de hidrocarbonetos
GB2139269B
(en )
1986-06-25
Oil well drilling rig assembly and apparatus therefor
DK519987D0
(da )
1987-10-02
Pejlingsteknik for en underjords-boreanordning
MX159926A
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1989-10-06
Barrena de perforacion de diamante para perforar yacimientos subterraneos
EP0427107A3
(en )
1992-04-08
Drilling fluid additive
FR2542366B1
(fr )
1986-12-19
Appareil pour le forage dirige de puits souterrains
OA09548A
(en )
1993-01-31
Additive for well drilling fluids
FI920904A7
(fi )
1992-02-28
Porausreiän vuorausputken flotaatiolaite ja menetelmä
NO160721C
(no )
1989-05-24
Fremgangsmaate for fremstilling av et heteropolysakkarid.
RO96196A2
(ro )
1989-01-30
Procedeu de preparare a unui aditiv pe baza de minerale de silicati de mangan
NO901543D0
(no )
1990-04-04
Fjellboreanordning.
GB8722987D0
(en )
1987-11-04
Mineral drilling rig
EP0114146A3
(en )
1984-08-22
Universal drilling apparatus equipped with means for rapid raising of the drill string
NO169364C
(no )
1992-06-10
Akustisk energisender for borehull-logging
GB8928704D0
(en )
1990-02-28
Method of treatment of drilled-in underground formation saturated with hydrocarbon gas
YU150386A
(en )
1988-10-31
Process for exploitation of mineral oil by using carbonic dioxide
AU493144B2
(en )
1975-11-13
Horizontal drill rig for deep drilling to remote areas anda method of drilling
SU909019A1
(ru )
1996-05-20
Основание морской буровой и способ его возведения
JPS5321003A
(en )
1978-02-27
Method of drilling rock bed* concrete structure* etc* and tool for the method
GB2142680B
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1986-12-17
Borehole drilling rig and method
NO179179C
(no )
1996-08-21
Fremgangsmåte for fremstilling av et mineraloljeadditiv
GB8623787D0
(en )
1986-11-05
Mineral drilling rig
CA994322A
(en )
1976-08-03
Horizontal drill rig for deep drilling to remote areas and method
ES545093A0
(es )
1987-11-16
Un tapon obturador de pozos de perforacion