Seat arrangement, method for creating a seat and method for fracturing a borehole

1. A method for creating a seat in a borehole comprising:

shortening a run-in length of a combination consisting of a pusher and a cone having a seat, and a seal, the pusher being radially unaltered during the shortening, the cone having a tapered face with an angle relative to a longitudinal axis of the cone of about 10 degrees or less, and the seal having a seal deformation face having a similar angle relative to the cone longitudinal axis and configured to interact with the tapered face, the arrangement positioned at a predetermined borehole location; and

radially deforming the seal by the shortening to seal and anchor with the borehole.

2. A method for fracturing a borehole comprising:

shortening a run-in length of a combination consisting of a pusher and a cone having a seat, and a seal, the pusher being radially unaltered during the shortening, the cone having a tapered face with an angle relative to a longitudinal axis of the cone of about 10 degrees or less, and the seal having a seal deformation face having a similar angle relative to the cone longitudinal axis and configured to interact with the tapered face, the arrangement positioned at a predetermined borehole location; and

radially deforming the seal by the shortening to seal and anchor with the borehole;

sealing the seat with a plug; and

pressuring against the plug and seat to initiate a fracture in a formation defining the borehole.

3. The method as claimed in claim 2 further comprising degrading the seat arrangement.

4. The method as claimed in claim 2 further including degrading the plug.