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
(es )
1989-10-06
Barrena de perforacion de diamante para perforar yacimientos subterraneos
MX164304B
(es )
1992-07-31
Fluidos y gelificantes con base en aceite,para perforacion de pozo
FR2542366B1
(fr )
1986-12-19
Appareil pour le forage dirige de puits souterrains
GB2127466B
(en )
1986-05-08
Apparatus for drilling oil wells
GB2081347B
(en )
1984-05-10
Drill tool for deep wells
OA09548A
(en )
1993-01-31
Additive for well drilling fluids
DE3670526D1
(de )
1990-05-23
Verfahren zur verbesserung der konditionierung von vergasungsmitteln, die zur unterirdischen kohlevergasung benutzt werden.
RO89835A
(ro )
1986-07-30
Procedeu de obtinere a unei polizaharide
RO96196A2
(ro )
1989-01-30
Procedeu de preparare a unui aditiv pe baza de minerale de silicati de mangan
GB8326961D0
(en )
1983-11-09
Bore-hole drilling device
BR8406966A
(pt )
1985-06-11
Processo para o tratamento de zona de formacao de furo subterraneo
GB8928704D0
(en )
1990-02-28
Method of treatment of drilled-in underground formation saturated with hydrocarbon gas
GB8722987D0
(en )
1987-11-04
Mineral drilling rig
YU150386A
(en )
1988-10-31
Process for exploitation of mineral oil by using carbonic dioxide
IT8421746A1
(it )
1986-01-04
Apparato per praticare trincee o pozzi
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
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