Off bottom cementing system
AssigneeSaudi Arabian Oil Company
InventorMohammed Jaber Al-Dossary
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Abstract
A method includes setting a tubular above a bottom of the well. The tubular having a float shoe attached to a distal end of the tubular and a controllable port penetrating a wall of the float shoe. The method further includes isolating a section of the annulus, opening the controllable port, and pumping cement through the controllable port into the section of the annulus to cement the annulus of the well.
Claims7
An apparatus for off-bottom cementing of a tubular, the apparatus comprising:
- a float shoe attached to a distal end of the tubular;
- a controllable port penetrating a wall of the float shoe, wherein the controllable port further comprises a dissolvable ring made of a material that dissolves when exposed to a chemical activation signal;
- and
- a sleeve mounted at a position, below the controllable port, on an exterior surface of the float shoe and comprising a spring that responds to an activation signal to push the sleeve into the wellbore to isolate an annulus, wherein the activation signal is the dissolvable ring being dissolved,
- wherein the controllable port has an open position that allows cement to be pumped from an inside of the tubular to the annulus to cement the tubular in place.
An apparatus for off-bottom cementing of a tubular, the apparatus comprising:
- a float shoe attached to a distal end of the tubular;
- a controllable port penetrating a wall of the float shoe;
- and
- an expandable packer mounted at a position on an exterior surface of the float shoe, below the controllable port, wherein the expandable packer expands when exposed to a chemical activation signal,
- wherein the controllable port has an open position that allows cement to be pumped from an inside of the tubular to an annulus of the tubular to cement the tubular in place, and wherein, upon the expandable packer being exposed to the chemical activation signal, a spring is activated to open the controllable port and create a hydraulic flow path between the inside of the tubular and the annulus of the tubular.
A method for cementing an annulus of a well, the method comprising:
- setting a tubular above a bottom of the well, the tubular comprising:
- a float shoe attached to a distal end of the tubular;
- and
- a controllable port penetrating a wall of the float shoe;
- isolating a section of the annulus by exposing an expandable packer to a chemical activation signal;
- opening the controllable port by exposing the expandable packer to the chemical activation signal to activate a springs;
- and
- pumping cement through the controllable port into the section of the annulus to cement the annulus of the well.
Dependencies are inferred from the claim text.