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US 11,530,582 B2Granted
Casing strings and related methods of deployment in horizontal wells
AssigneeSaudi Arabian Oil Company
InventorsSyed Muhammad Ali, Victor Jose Bustamante Rodriguez
Life of this patent
Estimating the term…
Abstract
A casing string includes an uphole section, a downhole section, and a sealed chamber that is fluidically isolated from the uphole and downhole sections. The sealed chamber extends between the uphole and downhole sections. The casing string further includes a tube that is disposed within the sealed chamber and that fluidically connects the uphole and downhole sections to provide a fluid flow path that extends past the sealed chamber and through the casing string.
Claims16
A casing string comprising:
- an uphole section comprising a plurality of uphole casing joints and a chamber collar;
- a downhole section comprising a plurality of downhole casing joints and a float collar;
- a sealed chamber that is fluidically isolated from the uphole and downhole sections and that extends between the chamber collar of the uphole section and the float collar of the downhole section such that the chamber collar defines an uphole end of the sealed chamber;
- and
- a tube that is disposed within the sealed chamber and that fluidically connects the uphole and downhole sections to provide a fluid flow path that extends past the sealed chamber and through the casing string,
- wherein an uphole end of the tube terminates in a fixed hanging configuration at the chamber collar of the uphole section,
- wherein a downhole end of the tube terminates at the float collar of the downhole section,
- wherein the tube, extending in the fixed hanging configuration between the chamber collar and the float collar, defines a fixed length of the sealed chamber, and
- wherein the sealed chamber comprises a plurality of intermediate casing joints that together extend the fixed length of the sealed chamber between the chamber collar and the float collar.
6 more elements
A method of deploying a casing string within a well, the method comprising:
- flowing drilling mud into an uphole section of the casing string, the uphole section comprising a plurality of uphole casing joints and a chamber collar;
- and
- flowing the drilling mud from the uphole section into a downhole section of the casing string, the downhole section comprising a plurality of downhole casing joints and a float collar, the drilling mud flowing past a sealed chamber that is fluidically isolated from the uphole and downhole sections and that extends between the chamber collar of the uphole section and the float collar of the downhole section such that the chamber collar defines an uphole end of the sealed chamber, and the drilling mud flowing through a tube that is disposed within the sealed chamber and that fluidically connects the uphole and downhole sections,
- wherein an uphole end of the tube terminates in a fixed hanging configuration at the chamber collar of the uphole section,
- wherein a downhole end of the tube terminates at the float collar of the downhole section,
- wherein the tube, extending in the fixed hanging configuration between the chamber collar and the float collar, defines a fixed length of the sealed chamber, and
- wherein the sealed chamber comprises a plurality of intermediate casing joints that together extend the fixed length of the sealed chamber between the chamber collar and the float collar.
4 more elements
Dependencies are inferred from the claim text.