Water plugging method for sieve tube horizontal well

The invention provides a water plugging method for a sieve tube horizontal well. The water plugging method includes the following steps that nitrogen is injected into the horizontal well to form a first segment plug; temporary plugging agent powder and water-base plugging adjusting agent powder are...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GUAN ZIJUN, LIU QIANG, LIU RUJIE, ZHENG MENG, LIU JIANGLING, WANG HAO, LI TENG, WANG YAO, CHEN XIAOKAI, LI RUI, WANG SIWEN, LI JUNPING, HAO YINGMIN, PENG BAOLIANG, MA CHANGMING
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention provides a water plugging method for a sieve tube horizontal well. The water plugging method includes the following steps that nitrogen is injected into the horizontal well to form a first segment plug; temporary plugging agent powder and water-base plugging adjusting agent powder are injected to form a second segment plug; nitrogen is injected to form a third segment plug; a water-base plugging adjusting agent is injected to form a fourth segment plug; a composite temperature-resistant plugging agent is injected to form a fifth segment plug; a polyacrylamide solution is replacedto form a sixth segment plug; waiting on cement setting is performed, steam of 3,500-35,000 mm is injected, and well is shut in for 24 h; liquefied carbon dioxide is injected to form a seventh segment plug, so that water plugging is completed for the sieve tube horizontal well. The water plugging method for the sieve tube horizontal well is an efficient water plugging method, and water plugging can be realized for a deep