System and method for a slotted liner shoe extension

摘要

A system and method for extending a slotted liner shoe is disclosed. According to one embodiment, a low density material is injected into a liner having a plurality of openings. The liner is suspended below a cemented casing in a wellbore of a well in a subterranean formation. The low density material extrudes through a lower portion of the liner into an annulus between the liner and the wellbore. A cement is circulated into the liner above the low density material. The cement extrudes through an upper portion of the liner into the annulus between the liner and the wellbore. Water is displaced from the wellbore, and a solid cemented casing string is formed at a desired depth.

主权项

1. A method comprising:
injecting a thermally degradable material at a desired depth into a liner having a plurality of openings, wherein the liner is suspended below a cemented casing in a wellbore of a well in a subterranean formation, wherein the thermally degradable material has a density about equal to or less than a density of fluid in the wellbore, and wherein the thermally degradable material extrudes through a lower portion of the liner into an annulus between the liner and the wellbore to plug an open hole interval of the well, wherein the thermally degradable material does not flow downward into a deeper part of the well; and circulating a cement into the liner above the thermally degradable material, wherein the cement extrudes through an upper portion of the liner into the annulus between the liner and the wellbore, displacing water from the wellbore and forming a solid cemented casing string, and wherein the cement is kept from sinking down the annulus between the liner and wellbore and separated from the deeper part of the well by the thermally degradable material.