Apparatus and method for unsticking a downhole tool
First Claim
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1. A downhole tool for use within a wellbore extending into an underground formation, comprising:
- a wellbore wall disengaging assembly, comprising;
a housing defining a longitudinal axis;
a sleeve having a substantially contiguous outer profile, wherein the outer profile of the sleeve comprises at least one projection extending radially outward and configured to translate the longitudinal axis of the housing away from the wellbore wall in response to rotation of the sleeve relative to the housing; and
a drive configured to induce the rotation of the sleeve relative to the housing, wherein the drive comprises a rotating gear having teeth configured to engage corresponding splines formed on an interior surface of the sleeve.
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Abstract
A downhole tool is provided including apparatus for unsticking the tool from the wall or a borehole. The tool may include a housing defining a longitudinal axis and a sleeve coupled to the housing and mounted for rotation relative to the housing, the sleeve having an exterior surface including at least one projection extending radially outwardly with respect to the longitudinal axis. A transmission mechanism may be coupled to and adapted to rotate the sleeve, and a motor may be coupled to the transmission mechanism. A method for unsticking the downhole tool by rotating a sleeve is also disclosed.
26 Citations
15 Claims
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1. A downhole tool for use within a wellbore extending into an underground formation, comprising:
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a wellbore wall disengaging assembly, comprising; a housing defining a longitudinal axis; a sleeve having a substantially contiguous outer profile, wherein the outer profile of the sleeve comprises at least one projection extending radially outward and configured to translate the longitudinal axis of the housing away from the wellbore wall in response to rotation of the sleeve relative to the housing; and a drive configured to induce the rotation of the sleeve relative to the housing, wherein the drive comprises a rotating gear having teeth configured to engage corresponding splines formed on an interior surface of the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of disengaging a downhole tool from a wall of a wellbore extending into an underground formation, comprising:
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generating relative rotation between a housing and a sleeve, wherein; the housing defines a longitudinal axis; the sleeve has a substantially contiguous outer profile; and the outer profile of the sleeve comprises at least one projection extending radially outward and configured to translate the longitudinal axis of the housing away from the wellbore wall in response to the relative rotation between the sleeve and the housing; and translating the downhole tool axially within the wellbore after the relative rotation between the housing and the sleeve causes sufficient translation of the longitudinal axis of the housing away from the wellbore wall to disengage the downhole tool from the wellbore wall; wherein generating the relative rotation between the housing and the sleeve comprises actuating a drive configured to induce the relative rotation; and wherein the drive comprises a rotating gear having teeth configured to engage corresponding splines formed on an interior surface of the sleeve. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A downhole tool for use within a wellbore extending into an underground formation, comprising:
a wellbore wall disengaging assembly, comprising; a housing defining a longitudinal axis; and a sleeve having a substantially contiguous outer profile, wherein the outer profile of the sleeve comprises at least one projection extending radially outward and configured to translate the longitudinal axis of the housing away from the wellbore wall in response to rotation of the sleeve relative to the housing; wherein the housing comprises a substantially contiguous outer profile, wherein the outer profile of the housing comprises at least one projection extending radially outward and configured to translate the longitudinal axis of the housing away from the wellbore wall in response to rotation of the sleeve relative to the housing; and a drive configured to induce the rotation of the sleeve relative to the housing, wherein the drive comprises a rotating gear having teeth configured to engage corresponding splines formed on an interior surface of the sleeve.
Specification