FRAC PLUG APPARATUS, SETTING TOOL, AND METHOD
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Abstract
An improved frac plug apparatus and method for setting a plug in a downhole. In an embodiment, the apparatus comprises an inner cone shaped member having a first end and second end, the inner cone shaped member having a generally increasing outer diameter from the first end, and an expandable outer sleeve having a first end and a second end, the first end of the expandable outer sleeve adapted to receive the first end of the inner cone shaped member and the second end of the expandable outer sleeve having a plurality of fingers joined at their tips at predetermined break points. In use, upon receiving the first end of the inner cone shaped member further into the expandable outer sleeve, the fingers of the expandable outer sleeve are adapted to break at their tips at their predetermined break points and expand outwardly to engage a surface of the downhole.
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Citations
41 Claims
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1-21. -21. (canceled)
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22. A downhole apparatus for use in a well, the apparatus comprising:
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an inner cone shaped member having a first end and a second end, the inner cone shaped member having, at least in some part, an increasing outer diameter from the first end to the second end, wherein a beveled seat is defined on the second end of the inner cone shaped member; an expandable outer sleeve having a first end and a second end, the first end of the expandable outer sleeve configured to receive the first end of the inner cone shaped member and the second end of the expandable outer sleeve having a plurality of fingers, wherein upon receiving the first end of the inner cone shaped member further into the expandable outer sleeve, the plurality of fingers of the expandable outer sleeve are configured to expand radially to engage with a wall of the downhole; and a sealing ball having a diameter suitable, for being received in the beveled seat at the second end of the inner cone shaped member, as a means to restrict longitudinal flow passage through the downhole apparatus. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of re-stimulating a wellbore using a flow diversion tool, the method comprising:
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loading a frac plug apparatus onto a setting tool, the frac plug apparatus comprising; an inner cone shaped member having a first end and a second end, the inner cone shaped member having, at least in some part, an increasing outer diameter from the first end to the second end, wherein a beveled seat is defined on the second end of the inner cone shaped member; an expandable outer sleeve having a first end and a second end, the first end of the expandable outer sleeve configured to receive the first end of the inner cone shaped member and the second end of the expandable outer sleeve having a plurality of fingers, wherein upon receiving the first end of the inner cone shaped member further into the expandable outer sleeve, the plurality of fingers of the expandable outer sleeve are configured to expand radially to engage with a wall of the downhole; and a sealing ball having a diameter suitable, for being received in the beveled seat at the second end of the inner cone shaped member, as a means to restrict longitudinal flow passage through the downhole apparatus; running the setting tool loaded with the frac plug apparatus into the downhole; at a desired location, pushing the inner cone shaped member into the expandable outer sleeve until the plurality of fingers of the expandable outer sleeve expand radially to engage with a wall of the downhole; and withdrawing the setting tool through the set frac plug. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41)
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Specification