Method for yielding retained gasoline in worked-out gas territory
BG44034A3
Chain perforator with hollow charge for perforating of encompassing tubes in drilling machines
HU198776B
Method for opening hydrocarbon-producing well drillings by blasting perforators
HUT40219A
Method for yielding the oil remaining in petroleum reservoirs situated in karst
HUT40217A
Hollow blasting charge provided with metal lining particularly for using at hydrocarbon production
HUT41089A
Method for increasing the recovery of vertically heterogeneous petroleum reservoirs working by gas drive
HU192592B
Chain auger machine chamber mounted with hollow charge for putting oil and natural gas wells in operation
HUT41534A
Method for measuring cubage of underground spaces
HU187224B
Method and apparatus for measuring the transport process formed as a result of concentration difference being between fluids contacting in petroleum reservoir
HU184352B
Collapsible building piece
HU180491B
Method for producing hydraulic binder of high aluminium content resisting carbon dioxide also at high temperature
YU252278A
Device for measuring interference influences in porous and or split layers
RO81929B
Installation for the performance of interference tests
DD139761A5
Measuring device for interference effects in poroeses or crashed memory layers
ATA744078A
Device for measuring interference effects in porouses and / or cracked storage layers
HU178614B
Equipment for the determination of molecular diffusion in pressure and temperature conditions characteristic for petroleum tanks
HU178611B
Hydromechanic casing catcher
CS212261B2
Packer
YU18577A
Device for a perment separating of layers and a hydraulic sinking into the earth
