US 12,286,869 B2
Method for expanding the capacity for local storage of chemical products or their solutions in reservoir rock
Fernando Antonio Moreira Da Silva, Rio de Janeiro (BR); and Mario Germino Ferreira Da Silva, Rio de Janeiro (BR)
Assigned to PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Rio de Janeiro (BR)
Filed by PETRÓLEO BRASILEIRO S.A.-PETROBRAS, Rio de Janeiro (BR)
Filed on Nov. 8, 2023, as Appl. No. 18/504,935.
Claims priority of application No. 1020220228604 (BR), filed on Nov. 9, 2022.
Prior Publication US 2024/0151124 A1, May 9, 2024
Int. Cl. E21B 43/017 (2006.01); C09K 8/584 (2006.01); E21B 43/16 (2006.01)
CPC E21B 43/166 (2013.01) [C09K 8/584 (2013.01); E21B 43/017 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for storing chemical products or their solutions in reservoir rock, comprising the steps of:
(a) assessing a compatibility of the chemical product to be stored with a selected subsea reservoir;
(b) selecting a product volumetry;
(c) sending the chemical product to a production or injection header of a stationary production unit (SPU);
(d) positioning the chemical product in a temporary storage tank present in the SPU;
(e) pressurizing and sending the chemical product to a wellhead which passes the chemical product to a subsea line for injection into the reservoir;
(f) penetrating the chemical product into reservoir rock of the reservoir, where it will be stored for later use; and
(g) removing the chemical product from the reservoir rock and sending the removed chemical product to another wellhead which passes the removed chemical product to another subsea line for injection into another subsea reservoir, where a treatment using the removed chemical product will be carried out.