Installing or removing a pump from a pressurised well

A method of servicing an electric submersible pump 10 in a well with a positive wellhead pressure includes providing production tubing in the well casing, a coil tubing string 24 within the production tubing having an electric submersible pump10 at a downhole end of the coil tubing string 24, and a...

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Bibliographische Detailangaben
1. Verfasser:	GERALD CHALIFOUX
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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Beschreibung
Zusammenfassung:	A method of servicing an electric submersible pump 10 in a well with a positive wellhead pressure includes providing production tubing in the well casing, a coil tubing string 24 within the production tubing having an electric submersible pump10 at a downhole end of the coil tubing string 24, and a pump-receiving housing 30 above the injection port 18 of the wellhead 16. With the injection port 18 sealed and the pump-receiving housing 30 opened, the electric submersible pump 10 may be inserted or removed from the pump-receiving housing 30. With the pump-receiving housing closed 30 and the injection port 18 opened, the electric submersible pump 10 may be moved to or from the production tubing in the well. Also claimed is a combination coil tubing string and an inverted electric submersible pump having a motor section above a pump section.