Apparatus and methods for use in cementing a casing string within a well bore
AssigneeHalliburton Company
InventorMorris G. Baldridge
Life of this patent
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Abstract
The present invention provides an apparatus in the form of a float shoe or collar for use in cementing a casing string within a well bore. The shoe or collar has blades extending therefrom for centering the shoe or collar, as well as the lower end of the casing string, within the well bore. The blades include jetting ports positioned therein for use in jetting the formation. In an alternative embodiment, the jetting ports are located between blades which are generally convoluted and extend circumferentially part-way around the perimeter of the apparatus.
Claims24
A method of cementing a casing string within a well bore comprising the steps of:
- attaching an apparatus to the casing string wherein the apparatus includes:
- (a) an outer body having means for connection ,as part of the casing string;
- (b) a blade extended from said outer body, said blade having a plurality of jetting ports;
- and
- (c) means for providing fluid communication between the casing string and said jetting ports;
- and
- delivering a cementing fluid through said jetting ports and into the well bore to cement the casing spring therein.
A method of cementing a casing string within a well bore comprising the steps of:
- attaching an apparatus to the casing string wherein the apparatus includes:
- (a) an outer body having means for connection as part of the casing string;
- (b) a blade extended from said outer body, said blade having a jetting port located on a radial face portion thereof;
- and
- (c) means for providing fluid communication between the casing string and said jetting port;
- and
- delivering a cementing fluid through said jetting port and into the well bore to cement the casing string therein.
A method of cementing a casing string within a well bore comprising the steps of:
- attaching a float shoe to the casing string wherein the float shoe includes:
- (a) an outer body having means for connection as part of the casing strings
- (b) a blade extended from said outer body, said blade having a port;
- and
- (c) means for providing fluid communication between the casing string and said port;
- and
- delivering a cementing fluid through said port and into the well bore to cement the casing string therein.
A float shoe for use in a well bore comprising:
- an outer body having means for connection as part of a casing string;
- a blade extended from said outer body, said blade having a port for delivering a fluid into the well bore;
- means for providing fluid communication between the casing string and said port;
- and
- valve means in said outer body for allowing downward flow but preventing upward flow therethrough.
Dependencies are inferred from the claim text.