Method and apparatus for chemical treatment of subterranean well bores
This patent describes an inflatable well treatment tool suitable for insertion into a well through a well conduit disposed in a well bore. It comprises a central tubular body assemblage connectable to a fluid supply conduit extending to the surface; the central tubular body assemblage defining a central fluid passage communicating with the fluid supply conduit; an outer tubular assemblage surrounding a medial portion of the central tubular body and cooperating therewith to define a generally annular fluid passage surrounding the central tubular body assemblage; resilient means urging the central tubular body assemblage downwardly relative to the outer tubular assemblage to a run-in position; the outer tubular asssemblage including at least one annular elastomeric means expandable by pressurized inflation fluid supplied through the annular fluid passage into sealing engagement with the well bore; inflate port means in the lower portion of the central tubular body assemblage connecting the central fluid passage to the annular fluid passage; the central tubular body assemblage having a first radial port in its upper end communicating with the well bore, whereby circulation may be maintained during run-in.
- Assignee:
- Baker Hughes Inc., Houston, TX (United States)
- Patent Number(s):
- A; US 5044444
- Application Number:
- PPN: US 7-548622
- OSTI ID:
- 5797685
- Country of Publication:
- United States
- Language:
- English
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