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US 7,726,403 B2Granted
Apparatus and method for ratcheting stimulation tool
AssigneeHalliburton Energy Services, Inc.
InventorJim B. Surjaatmadja
Life of this patent
Estimating the term…
Abstract
A method and apparatus for ratcheting a stimulation tool in a well in which the stimulation tool is movable from a first radial position to a second radial position without moving the tool string.
Claims24
A method for treating a zone intersecting a well comprising the steps of:
- lowering a tool string with a jetting tool in the well, wherein a lower end of the jetting tool has a channel capable of drawing in debris and expelling debris therefrom;
- positioning the jetting tool at a first longitudinal and a first radial location in the well such that at least one port in the jetting tool for jetting fluid therethrough is adjacent the zone to be treated;
- pumping a proppant-laden fluid through the tool string and the at least one port in the jetting tool to initiate fractures at the first longitudinal and first radial location in the well;
- and
- ratcheting the jetting tool so the at least one port rotates to a second radial position in the well adjacent the zone to be treated.
2 more elements
A method of treating a well comprising:
- (a) positioning a stimulation tool on a tool string in the well such that ports defined in the stimulation tool are adjacent a first zone to be treated;
- (b) axially extending the stimulation tool relative to the tool string and simultaneously rotating the stimulation tool to a first radial position adjacent the first zone;
- (c) pumping a proppant-laden fluid through the ports in the stimulation tool to initiate fractures in the first zone;
- (d) axially retracting the stimulation tool relative to the tool string;
- (e) repeating the step of axially extending the stimulation tool relative to the tool string and simultaneously rotating the stimulation tool to a new radial position adjacent the first zone;
- and
- (f) pumping a proppant-laden fluid through the ports in the stimulation tool to initiate fractures in the first zone at the second radial position.
4 more elements
A clog-resistant stimulation tool comprising:
- a sealed sub;
- a stem slidably disposed in the sealed sub;
- a jetting head connected to the stem, the stem and jetting head being movable axially and rotationally relative to the sealed sub;
- and
- a seal disposed in a lowermost channel on the sealed sub, the sealed sub and stem defining a gap therebetween at a lower end thereof which will communicate a well in which the tool is disposed with the lowermost channel, wherein debris will be drawn into, and expelled from the lowermost channel as the stem moves axially relative to the sealed sub.
2 more elements
Dependencies are inferred from the claim text.