Abstract: Methods and apparatuses are provided for clearing a wellbore using a component for milling and a component for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

Abstract: Methods and apparatuses are provided for clearing a wellbore using a component for milling and a component for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

Abstract: Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

Abstract: A method and a downhole apparatus for clearing a wellbore are disclosed. The method locates a mill in the wellbore about the obstructions, introduces a driving fluid flow along a driving flow path from surface to the mill, and introduces a circulation fluid flow along a circulation flow path from surface into a wellbore annulus at a location in the wellbore above the mill. Then the mill is driven by the introduced driving fluid flow to mill the obstructions; and milled obstructions are circulated to the surface via the wellbore annulus using the introduced circulation fluid and gas flow. At least a portion of the circulation flow path is within the driving flow path.

Abstract: Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

Abstract: There are disclosed several embodiments of an assembly for latching over and sealing about a casing joint having an enlarged diameter upper end so as to install a cementing head or other heavy equipment on the joint. The assembly includes a housing on which the equipment may be mounted and having a bore for lowering over the upper end of the casing joint to connect a bore in the equipment with the casing string. A latch ring is received in a recess in the bore for expansion to permit the upper end of the joint to be moved through and above it, and contraction beneath the lower side of the upper end, and a seal package is mounted in the recess above the ring to seal between the upper end of the casing joint and the recess.