Completion apparatus and methods for use in wellbores

A method of preventing accumulation of unwanted materials in an annular area in a wellbore comprising:

• placing a first string of casing having an enlarged inner diameter portion at an end into a wellbore;
• coupling a sleeve to the enlarged inner diameter portion to form the annular area;
• disposing a second string of casing into the first string of casing;
• and
• expanding the second string of casing along with the sleeve into the enlarged inner diameter portion.

A method of isolating an annular area in a wellbore comprising:

• placing a first string of casing having an enlarged inner diameter portion at an end into a wellbore;
• coupling a sleeve to the enlarged inner diameter portion;
• and
• isolating an annular area formed between the outer surface of the sleeve and the enlarged inner diameter portion, the annular area extending substantially the length of the sleeve.

A method of preventing accumulation of unwanted materials comprising:

• placing a first string of casing having an enlarged inner diameter portion at an end into a wellbore;
• coupling a dissolvable sleeve to the enlarged inner diameter portion;
• and
• dissolving the sleeve with a dissolving solution.

A method of preventing accumulation of unwanted materials comprising:

• placing a first string of casing having an enlarged inner diameter portion at an end and a deformable sleeve into a wellbore;
• coupling a sleeve to the enlarged inner diameter portion;
• expanding the deformable sleeve;
• and
• retrieving the sleeve.

A method to prevent accumulation of unwanted materials comprising:

• placing a cement shoe assembly having a housing with an enlarged inner diameter portion at an end;
• attaching a sleeve to cover the enlarged inner diameter portion;
• and
• expanding the sleeve into the enlarged inner diameter portion.

A cement shoe assembly comprising:

• a tubular housing for disposal at an end of a tubular string, the housing having a first inner diameter portion and an enlarged inner diameter portion;
• a sleeve disposed in the housing adjacent the enlarged inner diameter portion, the sleeve having an inner diameter substantially the same as the first inner diameter portion, wherein an annular space is formed between the sleeve and the enlarged inner diameter portion, the annular space is sealed and filled with a void filling substance;
• and
• a drillable cement shoe portion disposed in the housing, the cement shoe portion in selective fluid communication with the tubular string.

A cement shoe assembly comprising:

• a tubular housing for disposal at an end of a tubular string, the housing having a first inner diameter portion and an enlarged inner diameter portion;
• a sleeve disposed in the housing adjacent the enlarged inner diameter portion, the sleeve having an inner diameter substantially the same as the first inner diameter portion, the sleeve is radially expandable;
• and
• a drillable cement shoe portion disposed in the housing, the cement shoe portion in selective fluid communication with the tubular string.

A method of isolating an annular area in a wellbore comprising:

• placing a first string of casing having an enlarged inner diameter portion at an end into a wellbore;
• coupling a sleeve to the enlarged inner diameter portion;
• isolating an annular area formed between the outer surface of the sleeve and the enlarged inner diameter portion;
• and
• filling the annular area with a void filling substance that is displaceable after use.