DE3563236D1
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1988-07-14
Fracturing method for stmulation of wells
GB2195939B
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1990-11-07
Member for percussion drilling and method of protection therefor
DE3570903D1
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1989-07-13
Method of fracturing subterranean formations
GB2103686B
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1986-06-11
A composition and method for reducing the permeability of subterranean formations
GB8629746D0
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1987-01-21
Installation of downhole pumps in wells
NZ215310A
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1988-08-30
Method of reducing the permeability to water of a subterranean formation
CS753287A2
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1989-10-13
Agent for cultural plants protection and method of their efficient component production
GB8719701D0
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1987-09-30
Maintenance & servicing of subsea wells
PL261362A1
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1987-08-10
Method of consolidating earth formations
PL257688A1
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1986-10-21
Method of consolidating geological formations
DE3560405D1
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1987-09-03
Process for the reversible consolidation of subterranean formations
DE3473902D1
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1988-10-13
Offshore well head protector and method of installation
EP0251165A3
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1988-09-28
Drilling means serving as ground anchor and method
GB2229749B
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1993-05-05
Method of protecting permeable subterranean formations
CS304586A2
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1988-08-16
Method for wells of small water works protection and for remote signallization of working efects thereof
GB2110744B
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1985-09-18
Method and compositions for acidizing subterranean formations
GB8702144D0
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1987-03-04
Permeability restoration of damaged formations
YU69687A
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1990-12-31
Process for filling underground passages against water and building for executing this process
GB8922432D0
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1989-11-22
Method of tapping subterranean pipes
GB2212514B
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1992-07-08
Cathodic protection of subterranean pipes
PL246236A2
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1984-12-17
Method of protection of stone building units against action of weather conditions
IL86781A0
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1988-11-30
Method and means for protection of underground building parts from ground water
ZA872606B
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1987-11-25
Method of building
PL258097A1
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1987-11-02
Method of obtaining laurylbenzyldimethylammonium bromide
PL280776A1
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1991-01-28
Method of activating geothermal bore-holes