Formation test probe
AssigneeHalliburton Energy Services, Inc.
InventorsMichael T. Pelletier, Darren Gascooke, Li Gao, Christopher W. Berry
Life of this patent
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Abstract
A formation test probe and a formation test system and method for implementing a self-drilling probe are disclosed. In some embodiments, a test probe includes a body having a channel therethrough to a frontside port, and further includes drill-in tubing disposed within the channel and having a front tip that is extensible from the frontside port. An exciter is disposed within the body in contact with the drill-in tubing and operably configured to induce resonant vibration in the drill-in tubing during a drill-in phase of a formation test cycle.
Claims25
A formation test probe comprising:
- a body having a channel therethrough to a frontside port;
- drill-in tubing, at least a portion of which is disposed within the channel, having a front tip that is extensible from the frontside port, wherein a backend of the drill-in tubing is wound onto a spiral groove and supported on a tubing mandrel, wherein the tubing mandrel includes the spiral groove in its surface;
- and
- an exciter disposed within the body in contact with the drill-in tubing and operably configured to induce vibration in the drill-in tubing.
A formation test system comprising:
- a probe assembly disposed within a test tool and including,
- a body forming a channel therethrough to a frontside port;
- drill-in tubing disposed within the channel and having a front tip port, wherein a backend of the drill-in tubing is wound onto a spiral groove and supported on a tubing mandrel, wherein the tubing mandrel includes the spiral groove on its surface;
- a drill-in tubing actuator configured to extend the front tip from the frontside port;
- and
- an exciter disposed within the body in contact with the drill-in tubing and configured to induce vibration in the drill-in tubing;
- and
- a flow control system configured to induce fluid flow within the drill-in tubing.
A method for formation testing comprising:
- positioning a formation test tool to a test location within a wellbore;
- and
- deploying a probe proximate a wellbore surface at the test location, wherein the probe includes drill-in tubing having an extensible front tip, said deploying the probe including, wherein a back end of the drill-in tubing is wound onto a spiral groove and supported on a tubing mandrel, wherein the tubing mandrel includes the spiral groove in its surface:
- extending the drill-in tubing from the probe into the wellbore surface;
- and
- inducing vibration in the drill-in tubing during said extending the drill-in tubing.
Dependencies are inferred from the claim text.