초록 ▼

A wellhead isolation tool for use with a wellhead assembly from which a tubing string is suspended comprises a tubular mandrel which includes an axial passage that extends therethrough and lower end that is adapted to engage the tubing string, a pumping head which is connected over the wellhead asse

A wellhead isolation tool for use with a wellhead assembly from which a tubing string is suspended comprises a tubular mandrel which includes an axial passage that extends therethrough and lower end that is adapted to engage the tubing string, a pumping head which is connected over the wellhead assembly and which includes an internal chamber that is in fluid communication with the axial passage and a port that extends through the pumping head to the chamber, and an actuator which is connected over the pumping head for moving the mandrel axially through the pumping head and into engagement with the tubing string. When the mandrel is engaged with the tubing string, fluid may be communicated through the port, the chamber and the mandrel and into the tubing string.

대표청구항 ▼

A wellhead isolation tool for use with a wellhead assembly from which a tubing string is suspended comprises a tubular mandrel which includes an axial passage that extends therethrough and lower end that is adapted to engage the tubing string, a pumping head which is connected over the wellhead asse

A wellhead isolation tool for use with a wellhead assembly from which a tubing string is suspended comprises a tubular mandrel which includes an axial passage that extends therethrough and lower end that is adapted to engage the tubing string, a pumping head which is connected over the wellhead assembly and which includes an internal chamber that is in fluid communication with the axial passage and a port that extends through the pumping head to the chamber, and an actuator which is connected over the pumping head for moving the mandrel axially through the pumping head and into engagement with the tubing string. When the mandrel is engaged with the tubing string, fluid may be communicated through the port, the chamber and the mandrel and into the tubing string. , Phillips, 604/035; US-5334183, 19940800, Wuchinich, 606/046; US-5334193, 19940800, Nardella, 606/041; US-5336220, 19940800, Ryan et al., 604/022; US-5342357, 19940800, Nardella, 606/040; US-5348554, 19940900, Imran et al., 606/041; US-5366443, 19941100, Eggers et al., 606/114; US-5370675, 19941200, Edwards et al., 607/101; US-5380277, 19950100, Phillips, 604/033; US-5383876, 19950100, Nardella, 606/049; US-5383917, 19950100, Desai et al., 607/102; US-5395312, 19950300, Desai, 604/022; US-5403311, 19950400, Abele et al., 606/049; US-5417687, 19950500, Nardella et al., 606/032; US-5419767, 19950500, Eggers et al., 604/114; US-5437664, 19950800, Cohen et al., 606/042; US-5441499, 19950800, Fritzsch, 606/045; US-5454809, 19951000, Janssen, 606/041; US-5458596, 19951000, Lax et al., 606/031; US-5496312, 19960300, Klicek, 606/034; US-5514130, 19960500, Baker, 606/041; US-5556397, 19960900, Long