| US 7,588,101 B2 | ||
| Radially expandable downhole fluid jet cutting tool having an inflatable member | ||
| Gerald D. Lynde, Houston, Tex. (US); and Mary L. Laird, Madisonville, La. (US) | ||
| Assigned to Baker Hughes Incorporated, Houston, Tex. (US) | ||
| Filed on May 27, 2008, as Appl. No. 12/154,781. | ||
| Application 12/154781 is a continuation in part of application No. 11/522692, filed on Sep. 18, 2006, granted, now 7,434,633. | ||
| Prior Publication US 2008/0271892 A1, Nov. 06, 2008 | ||
| Int. Cl. E21B 43/11 (2006.01) | ||
| U.S. Cl. 175—67 [166/55.8; 175/424] | 19 Claims |
| 1. A downhole jet cutting tool comprising:
a housing having an upper end for connection to a conduit string for running the downhole jet cutting tool into a well, the
housing having a passageway for communicating a cutting fluid pumping down the conduit string to the downhole jet cutting
tool;
an inflatable member operatively associated with the passageway whereby the inflatable member is inflated by the cutting fluid,
the inflatable member having an initial position and a plurality of inflated positions; and
a jet nozzle assembly, the jet nozzle assembly comprising a cutting head having a nozzle for expelling the cutting fluid,
the jet nozzle assembly being disposed on an outer wall surface of the inflatable member so that as the inflatable member
moves from the initial position to the plurality of inflated positions, the jet nozzle assembly moves from a retracted position
to a plurality of corresponding extended positions,
wherein the passageway of the housing and the nozzle of the cutting head are in fluid communication with each other such that
the cutting fluid can flow from the passageway and out of the nozzle at a pressure sufficient to cut a cutting surface disposed
within the well.
|