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US 10,975,650 B2Granted
Electronic release tool
AssigneeHunting Titan, Inc.
InventorsJohn D. Holodnak, Garrett M. Hohmann, Santos D. Ortiz, Gene McBride, Sridhar Rajaram, George King
Life of this patent
Estimating the term…
Abstract
A releasable tool using an electronic motor to drive a collet and associated collet arms to engage or release a quick change sub that may be coupled to additional downhole tools, such as a perforating gun string.
Claims22
An apparatus for joining and releasing downhole tools comprising:
- a first cylindrical portion housing a motor coupled to a super nut, wherein the super nut converts rotation motion into a set linear travel from a first stop to a second stop;
- an indicator switch coupled to the super nut, wherein the indicator switch can detect if the super nut has reached the first stop or the second stop;
- a second cylindrical portion located downhole of, and proximate to, the first cylindrical portion housing a push rod coupled to a collet, wherein the push rod is further coupled to the super nut;
- the collet further comprising a first conical portion and a second conical portion connected by a cylindrical body, wherein the tapered end of the first conical portion and the tapered end of the second conical portion face towards each other;
- at least one collet arm pivoting about a pin located within the second cylindrical portion and having a rocker arm with a first contact area, a second contact area, and a lever grip, wherein the first contact area is located proximate to the first conical portion, the second contact area is located proximate to the second conical portion, and the pivot point is located in between the first conical portion and a the second conical portion of the collet.
2 more elements
A release tool for use in tool strings in oil wells comprising:
- a drive unit including a motor and a super nut wherein the drive unit is adapted to translate the super nut axially in response to rotation of the motor;
- a collet assembly including a plurality of collet arms pivotably affixed to a collet housing and a tapered inner collet shaft;
- a sensor adapted to detect the position of the super nut at both extremities of its axial movement;
- wherein the axial translation of the super nut in a first direction results in axially translating the tapered inner collet shaft axially in the first direction resulting in opening the collet arms and axial translation of the super nut in a second direction results in axially translating the tapered inner collet shaft axially in the second direction resulting in closing the collet arms.
1 more element
A method for joining and releasing downhole tools comprising:
- equalizing the pressure within a releasable tool;
- aligning the releasable tool with a quick change sub;
- activating a motor in a first direction to engage the releasable tool with the quick change sub with a plurality of arms;
- detecting engagement of the plurality of arms to lock the releasable tool to the quick change sub;
- releasing the quick change sub;
- detecting the plurality of arms is not fully engaged;
- and
- detecting the plurality of arms is fully disengaged.
5 more elements
Dependencies are inferred from the claim text.