초록 ▼

A retrievable bridge plug assembly having an internal "pump through" bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting, releasing and retrieving the bridge plug assembly. A tubing sensor is included to prevent setting of the bri

A retrievable bridge plug assembly having an internal "pump through" bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting, releasing and retrieving the bridge plug assembly. A tubing sensor is included to prevent setting of the bridge plug assembly in improper size tubing. When the bridge plug is properly located, the wedge assembly can actuated by manipulation of the retrieving tool to force the slips radially outward into gripping engagement with the well tubular and to force the seals into sealing engagement with the well tubular. A ball valve on the bridge plug assembly is movable to selectively open and close the bypass passage. The retrieving tool can maintain the valve and passageway open to facilitate circulation during run in and setting and also open during retrieving for pressure equalization. A service packer can be connected to and run with the bridge plug assembly.

대표청구항 ▼

A retrievable bridge plug assembly having an internal "pump through" bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting, releasing and retrieving the bridge plug assembly. A tubing sensor is included to prevent setting of the bri

A retrievable bridge plug assembly having an internal "pump through" bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting, releasing and retrieving the bridge plug assembly. A tubing sensor is included to prevent setting of the bridge plug assembly in improper size tubing. When the bridge plug is properly located, the wedge assembly can actuated by manipulation of the retrieving tool to force the slips radially outward into gripping engagement with the well tubular and to force the seals into sealing engagement with the well tubular. A ball valve on the bridge plug assembly is movable to selectively open and close the bypass passage. The retrieving tool can maintain the valve and passageway open to facilitate circulation during run in and setting and also open during retrieving for pressure equalization. A service packer can be connected to and run with the bridge plug assembly. ction pump from the well interior. 8. The method of claim 7, wherein said discharging step comprises discharging said fluid from said at least one discharge tube directly into an intake of said production pump. 9. The method of claim 7 further comprising positioning said electric submersible pumping system below said perforations in said well. 10. The method of claim 9, wherein said auxiliary pump draws fluid from the well interior into an auxiliary pump intake at a rate sufficient to cause a flow of fluid in the well interior downwardly past said motor to cool said motor. 11. An apparatus for producing well fluid from a well intersecting a producing formation, the well having a casing therein, the casing having perforations for communicating fluid from said formation into a well interior, the apparatus comprising: a production pump lowered into said well on a production tubing; a motor positioned below said production pump for driving said production pump; an auxiliary pump connected to a lower end of said motor; an auxiliary pump intake for receiving said well fluid; and an auxiliary pump discharge for discharging said well fluid received in said auxiliary pump intake. 12. The apparatus of claim 11, further comprising at least one discharge tube connected at a first end to said auxiliary pump discharge, said at least one discharge tube having a second end, said second end being located above said motor. 13. The apparatus of claim 12, wherein said second end of said at least one discharge tube is connected to an intake of said production pump, so that all of said well fluid discharged from said discharge tube is communicated into said intake of said production pump. 14. The apparatus of claim 12, wherein said well fluid received in said auxiliary pump intake is discharged through said second end of said at least one discharge tube into the well interior above said motor. 15. The apparatus of claim 12, wherein said well fluid received in the auxiliarm pump intake is discharged through said second end of said at least one discharge tube into said well interior above an intake for said production pump. 16. The apparatus of claim 11, wherein said motor drives said auxiliary pump. 17. The apparatus of claim 11, wherein said production tubing has a length such that said production pump is positioned below said perforations in said casing. 18. A method for limiting the accumulation of sediment in the bottom of a well in which a producing formation produces sediment along with a production fluid, the well having perforations to communicate said producing formation with said well, the method comprising: lowering an electric submersible pumping system into said well on a production tubing, the electric submersible pumping system comprising a production pump, an auxiliary pump, and a motor between said production pump and said auxiliary pump; positioning said electric submersible pumping system below said perforations; pumping production fluid in said well, along with sediment falling downwardly in said well, upwardly with said auxiliary pump past said motor; and producing at least a portion of said production fluid and sediment pumped by said auxiliary pump upwardly through a production tubing with said production pump. 19. The method of claim 18, wherein all of said production fluid and sediment pumped by said auxiliary pump is produced upwardly by said production pump. 20. The method of claim 18, further comprising: expelling said production fluid and sediment pumped by said auxiliary pump into said well above said motor; and allowing a portion of said production fluid and said sediment pumped by said auxiliary pump to flow downwardly in said well past said motor. 21. The method of claim 18, further comprising producing additional production fluid from said well through said production tubing with said production pump along with said at least a portion of said production fluid and sediment pumped upwardly by said auxiliary pump. 22. A method for producing fluid from a well intersecting a producing formation, comprising: lowering an electric submersible pumping system into said well, the pump system comprising a first submersible pump, a second submersible pump positioned below said first submersible pump, and a motor between said first and second submersible pumps for driving both said pumps; withdrawing fluid from said well with said second submersible pump to create a downward flow in the well past said motor at a rate sufficient to cool said motor; discharging said fluid withdrawn by said second submersible pump into said well above said motor; and producing fluid from said well upwardly through a production tubing with said first submersible pump, wherein the fluid produced upwardly through the production tubing comprises fluid received from the well in an intake for the first submersible pump. 23. The method of claim 22, said discharging step comprising: communicating said fluid withdrawn by said second submersible pump upwardly past said motor through at least one discharge tube; and expelling said fluid withdrawn by said second submersible pump from said at least one discharge tube above said motor. 24. The method of claim 23, said expelling step comprising expelling said fluid from said at least one discharge tube directly into an intake of said first submersible pump. 25. The method of claim 23, said expelling step comprising expelling said fluid from said at least one discharge tube into an interior of said well above said motor. 26. The method of claim 22, wherein said second pump withdraws sediment along with fluid, and wherein at least a portion of the fluid and sediment discharged into said well above said motor is produced upwardly through the production tubing by said first submersible pump, along with additional fluid from the well.