Sammenstilling ved nedre sementeringsflottorsko i en monoborings bronn

The present invention provides a cement shoe assembly (100) for use on a string of tubulars in a well. In one aspect of the invention, the cement shoe assembly includes a housing (110) having a lower portion (160) with an enlarged inside diameter and a drillable cement shoe (120) disposed therein. T...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BOUDREAUX JOSEPH JUDE, SEELY PATRICK JOHN, HEBERT JOHN EMILE, DUPRE THOMAS A
Format:	Patent
Sprache:	nor
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides a cement shoe assembly (100) for use on a string of tubulars in a well. In one aspect of the invention, the cement shoe assembly includes a housing (110) having a lower portion (160) with an enlarged inside diameter and a drillable cement shoe (120) disposed therein. The shoe includes a weakened portion (171) of material adjacent the enlarged inside diameter portion of the housing and ensures that as a cutting tool passes through the housing, all portions of the cement shoe are removed from the enlarged inside diameter portion, leaving a connection surface clear of debris for a subsequent tubular string. When a smaller tubular is expanded into the enclosed diameter portion of the housing, a connection is made therebetween without enlarging the outer diameter of the housing.