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US 11,111,754 B2Granted
Isolation polymer packer
AssigneeSaudi Arabian Oil Company
InventorsAbdulrahman Abdulaziz Al-Mulhem, Ayman Mohammed Almohsin
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Abstract
A system and method for isolating a zone in a wellbore having a sand screen including applying hydrogel into an annulus between the sand screen and the geological formation to form a hydrogel packer in the annulus.
Claims20
A method of treating a wellbore in a geological formation for isolation of a water zone, comprising:
- deploying a first application packer into the wellbore to a lower target depth below the water zone, the wellbore comprising a sand screen;
- discharging hydrogel from the first application packer through the sand screen into an annulus between the sand screen and the geological formation to form a lower hydrogel packer in the annulus at the lower target depth;
- deploying a second application packer into the wellbore to an upper target depth above the water zone;
- and
- discharging hydrogel from the second application packer through the sand screen into the annulus to form an upper hydrogel packer in the annulus at the upper target depth, wherein the hydrogel comprises polyacrylamide (PAM) comprising a copolymer of acrylamide (AM) and 2-(dimethylamino)ethylacrylatemethochloride (DAC).
2 more elements
A wellbore in a geological formation, the wellbore comprising:
- a sand screen;
- a lower hydrogel packer below a water zone in an annulus between the sand screen and the geological formation to facilitate isolation of the water zone;
- and
- an upper hydrogel packer above the water zone in the annulus to facilitate isolation of the water zone, wherein the lower hydrogel packer and the upper hydrogel packer each comprise a hydrogel comprising polyacrylamide (PAM) and a crosslinker comprising graphene oxide (GO), a clay mineral, carbon nanotubes, or graphene nanosheets, or any combinations thereof.
1 more element
A method of isolating a water zone in a wellbore in a geological formation, comprising:
- deploying a straddle packer into the wellbore, wherein the wellbore comprises the water zone and a sand screen, wherein the straddle packer comprises a chamber holding hydrogel, and wherein the hydrogel comprises polydopamine (PDA);
- ejecting the hydrogel from the chamber through nozzles of the straddle packer to inject the hydrogel through the sand screen into an annulus between the sand screen and the geological formation to form a lower hydrogel packer in the annulus below the water zone;
- and
- ejecting the hydrogel from the chamber through the nozzles to inject the hydrogel through the sand screen into the annulus to form an upper hydrogel packer in the annulus above the water zone.
1 more element
Dependencies are inferred from the claim text.