Apparatus for multiple-level successive perforating

The utility model relates to an apparatus for multiple-level successive perforating used for petroleum perforation working, comprising an annular presser 1, a blaster 2, a perforating tool 3, a pressure transmission gun breech 4, a packer 5 and an interlayer oil pipe 6. The annular presser 1 is posi...

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Bibliographische Detailangaben
Hauptverfasser:	DUANYING ZHANG, YUXIN CAO, SHENGLI WANG
Format:	Patent
Sprache:	eng
Schlagworte:	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
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