WELLBORE TOOL AND METHOD
First Claim
Patent Images
1. A wellbore tool comprising:
- a tool body including a tubular wall and an inner bore;
a seat formed of dissolvable material and positioned within the inner diameter, the seat including an upper end, a lower end, a bore with an inner diameter that tapers through a seating surface and a backside surface opposite the bore, the backside surface having an outer diameter that tapers from a position adjacent the upper end to a position adjacent the lower end; and
a support area on the tool body, the support area formed of a material stronger than the dissolvable material and having a tapering bore sized and shaped similarly to the outer diameter of the backside surface, the seat mounted in the support area with the backside surface supported against the support area and the bore exposed in the inner bore.
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Abstract
A wellbore tool includes a seat within the tool'"'"'s inner diameter. At least the seating surface of the seat, which is that surface exposed within the tool, is formed of a dissolvable material. The tool also includes a support area on the tool body, on which the seat is mounted. The support area is formed of a material stronger than the dissolvable material.
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Citations
25 Claims
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1. A wellbore tool comprising:
- a tool body including a tubular wall and an inner bore;
a seat formed of dissolvable material and positioned within the inner diameter, the seat including an upper end, a lower end, a bore with an inner diameter that tapers through a seating surface and a backside surface opposite the bore, the backside surface having an outer diameter that tapers from a position adjacent the upper end to a position adjacent the lower end; and
a support area on the tool body, the support area formed of a material stronger than the dissolvable material and having a tapering bore sized and shaped similarly to the outer diameter of the backside surface, the seat mounted in the support area with the backside surface supported against the support area and the bore exposed in the inner bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
- a tool body including a tubular wall and an inner bore;
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10. A wellbore frac valve tool comprising:
- a tubular body including a wall, an upper end, a lower end and an inner bore extending from the upper end to the lower end, the inner bore having an inner diameter;
a port through the wall;
a sleeve valve in the inner bore and having a inner facing surface exposed in the inner bore, the sleeve valve moveable from a port-closed position over the port and a port-open position retracted from the port;
a support area on the inner facing surface of the sleeve; and
a ball seat in the support area and connected for movement with the sleeve, the ball seat including a portion exposed in the bore having a diameter less than the inner diameter and the portion is formed of dissolvable material. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
- a tubular body including a wall, an upper end, a lower end and an inner bore extending from the upper end to the lower end, the inner bore having an inner diameter;
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21. A method for completing a wellbore, the method comprising:
- landing a ball on a ball seat to actuate a frac valve tool to open ports to the formation;
treating the formation;and opening up the frac valve tool to a full bore diameter by providing time for the ball seat to dissolve. - View Dependent Claims (22, 23, 24, 25)
- landing a ball on a ball seat to actuate a frac valve tool to open ports to the formation;
Specification