DEVICE FOR OPENING PORTS IN DRILLING STRING

• Main Authors: RADKOVSKIJ VLADIMIR R,SU, RYMCHUK DANILO V,SU, LAVRINOV STANISLAV V,SU, LENKEVICH YURIJ E,SU, TSYBULKO SERGEJ V,SU
• Format: Patent
• Language: English; Russian
• Published: 07.01.1992
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS