Method for replacing filling layer without changing pipe string, flowback service device and well completion structure

The invention relates to a method for replacing a down-hole packer particle filling layer without changing the down-hole pipe string flowback. The filling layer filled with packer particles are arranged in an annulus between a down-hole pipe string and the borehole wall, and a sliding sleeve type fi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FENG GUOJIANG, PEI BOLIN
Format:	Patent
Sprache:	chi ; 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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