Anti-pollution protecting method and device for sandwiched perforating gun

The present invention relates to the anti-pollution protecting method and device for sandwiched perforating gun in oil and gas well. The sandwiched perforating gun has sealing structure at its two ends, and the explosive fuse of perforating gun is isolated from that of sandwiched gun. The sealing st...

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Bibliographische Detailangaben
Hauptverfasser:	DEZHAO XU, LIANGYUE LIU, YU CHEN
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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