Apparatus and methods for cleaning a well
Patent
·
OSTI ID:6572704
This patent describes a system for cleaning the inside diameter of well tubulars. It comprises: a work string disposed within the well tubular; means for longitudinally moving the work string within the well tubular; means for supplying power fluid to the work string; fluid jet cleaning apparatus attached to the end of the work string within the well tubular; the jet cleaning apparatus having an inner mandrel and an adapter to connect the apparatus to the work string; a housing rotatably carried on the exterior of the inner mandrel; a fluid flow path from the work string to the housing via the inner mandrel; a nozzle body attached to the housing and in fluid communication therewith; a pair of jet nozzles machined into the nozzle body diametrically opposite from each other and oriented to project power fluid essentially tangential to the nozzle body whereby power fluid exiting from the pair of jet nozzles will cause rotation of the housing and the nozzle body to remove deposits from the inside diameter of the well tubular; and the longitudinal moving means comprising a coil tubing injector.
- Assignee:
- Otis Engineering Corp., Dallas, TX (USA)
- Patent Number(s):
- A; US 4919204
- Application Number:
- PPN: US s 7-298688
- OSTI ID:
- 6572704
- Country of Publication:
- United States
- Language:
- English
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