Ultra high temperature packer by high-temperature elastomeric polymers

摘要

A high temperature downhole packer including a tubular member, an annular and longitudinally movable ring, and a packer. The tubular member has a stop located on an outer diameter thereof. The annular and longitudinally movable ring is disposed around the outer diameter of the tubular member. The packer element is disposed between the stop and the ring. The packer element includes a high temperature elastomeric polymer having a first storage modulus from about 1,000 MPa to about 10,000 MPa at a first temperature between about −100° C. and about 175° C., and a second storage modulus from about 1 MPa to about 1000 MPa at a second temperature ranging from about 175° C. to about 475° C.

主权项

1. A method of sealing an annulus of a wellbore comprising:
conveying a downhole packer into a wellbore at a temperature less than or equal to a first temperature, wherein the downhole packer comprises:
a tubular member having a ring slidably positioned on an outer surface thereof, a stop fixedly attached to the outer surface, and an annular seal element mounted around the tubular member between the stop and the ring, wherein the annular seal element comprises an elastomeric polymer having a first storage modulus at the first temperature and a second storage modulus at a second temperature; exposing the annular seal element to a wellbore temperature greater than or equal to the second temperature; and setting the annular seal element, wherein the annular seal element comprises at least partially cross-linked polyetheretherketone.