Process for preparing red mud cement and concrete compositions comprising the red mud cement
AssigneeSt Loarn Group Limited
InventorsRodney Zubrod, Sean Cox
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Abstract
The present invention relates to a cement composition, a method of preparing the cement composition, and methods, uses and applications for the cement compositions. The present invention also relates to a cementitious composition, a method of preparing the cementitious composition, and methods, uses and applications for the cementitious compositions. The present invention further relates to a concrete composition, a method of preparing the concrete composition, and methods, uses and applications for the concrete compositions. Disclosed herein are methods of cementing of subterranean formations, specifically in wells such as hydrocarbon wells.
Claims22
A method of servicing a subterranean formation having one or more lost circulation zones, comprising:
- introducing a lost circulation composition into a lost circulation zone,
- the lost circulation composition comprising a cement component and water;
- and allowing the lost circulation composition to set in the lost circulation zone, wherein the cement component comprises:
- red mud and gypsum and optionally additives, wherein the additives are present in no more than 50 wt % based on the total weight of the cement component,
- wherein the red mud is present in an amount of from 40 wt % to 95 wt % and the gypsum is present in an amount of 5 wt % to 50 wt % based ion the total weight of the cement component, optionally wherein the lost circulation cement composition has a unit weight (or density) in the range of from 10 ppg to 25 ppg, optionally from 10 ppg to 20 ppg, and
- allowing the lost circulation composition to set in the lost circulation zone.
A method for cementing comprising providing a geopolymer cement composition comprising:
- a cement component and water,
- wherein the cement component comprises red mud and gypsum and optionally additives wherein the additives are present in no more than 50 wt % based on the total weight of the cement component,
- wherein the red mud is present in an amount of from 50 wt % to 75 wt % and the gypsum is present in an amount of 5 wt % to 20 wt % based ion the total weight of the cement component, optionally wherein the geopolymer cement composition has a unit weight (or density) in the range of from 10 ppg to 20 ppg, such as from 10 ppg to 15.5 ppg,
- introducing the geopolymer cement composition into a wellbore annulus in a subterranean formation during a primary cementing operation;
- and
- allowing the geopolymer cement composition to set in the subterranean formation.
A method of plugging a wellbore, comprising providing a geopolymer cement composition comprising:
- a cement component and water,
- wherein the cement component comprises red mud and gypsum and optionally additives wherein the additives are present in no more than 50 wt % based on the total weight of the cement component,
- wherein the red mud is present in an amount of from 40 wt % to 95 wt % and the gypsum is present in an amount of 5 wt % to 50 wt % based ion the total weight of the cement component, optionally wherein the geopolymer cement composition has a unit weight (or density) in the range of from 10 (1198 kg/m3) ppg to 20 ppg (2396 kg/m3), such as from 10 (1198 kg/m3) ppg to 17 ppg (2037 kg/m3)
- introducing the geopolymer cement composition into the wellbore;
- and allowing the geopolymer cement composition to set in the wellbore.
Dependencies are inferred from the claim text.