US 12,247,159 B1
Bioderived renewable graphene enhanced cement
Thomas Jason Pisklak, Houston, TX (US); Kyriacos Agapiou, Houston, TX (US); Samuel J. Lewis, Houston, TX (US); Chad Huffman, Calgary (CA); and Giorgio DeVera, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Sep. 12, 2023, as Appl. No. 18/367,145.
Int. Cl. C09K 8/467 (2006.01); C04B 14/02 (2006.01); C04B 28/04 (2006.01); C04B 28/06 (2006.01); E21B 33/138 (2006.01)
CPC C09K 8/467 (2013.01) [C04B 14/022 (2013.01); C04B 28/04 (2013.01); C04B 28/06 (2013.01); E21B 33/138 (2013.01); C04B 2201/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
providing a cement slurry comprising: graphene; a cement; and water, wherein the graphene comprises bioderived renewable graphene (BRG), wherein the BRG comprises nanosheets, wherein the nanosheets have a surface area of from 2000 to 5000 m2/g, a pore volume of from 3 to 5 cc/g, or a combination thereof, and wherein the cement slurry comprises from 0.2 to 20 percent of the graphene by weight of cement (% graphene bwoc);
placing the cement slurry in a workspace, wherein the workspace comprises a wellbore penetrating a subterranean formation; and
allowing the cement slurry to set to provide a hardened cement,
wherein one or more of a compressive strength (CS), a Young's modulus (YM), or a reduction in a ratio of YM/CS of the hardened cement is greater than a CS, YM, or reduction in ratio of YM/CS, respectively, of an otherwise same hardened cement produced from an otherwise same cement slurry comprising synthetic graphene in place of the BRG.