公开(公告)号：US12110772B1

公开(公告)日：2024-10-08

申请号：US18315262

申请日：2023-05-10

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Zuhair Alyousef ,  Hamoud Alqahtani ,  Subhash C. Ayirala ,  Muhammad M. Almajid ,  Ali A. Al-Taq

IPC: E21B43/16 ,  E21B43/24

CPC classification number: E21B43/164 ,  E21B43/24

Abstract: Enhanced hydrocarbon recovery methods may include use of carbonated aqueous fluids. Methods for enhanced hydrocarbon recovery may include: introducing a carbonated aqueous fluid into a subterranean reservoir, the carbonated aqueous fluid including carbon dioxide; introducing a first salt solution and a second salt solution into the subterranean reservoir after introducing the carbonated aqueous fluid; contacting the first salt solution with the second salt solution in the subterranean reservoir under conditions where the first salt and the second salt undergo an exothermic reaction; and heating the carbonated aqueous fluid with heat produced via the exothermic reaction; wherein at least a portion of the carbon dioxide is released from the carbonated aqueous fluid upon heating and migrates from a lower portion to an upper portion of the subterranean reservoir, and a decarbonated saline solution is generated from the carbonated aqueous fluid from which the carbon dioxide is released.

公开(公告)号：US12247161B2

公开(公告)日：2025-03-11

申请号：US18310299

申请日：2023-05-01

Applicant: Saudi Arabian Oil Company

Inventor： Hamoud Alqahtani ,  Zuhair Ali AlYousif ,  Subhash Chandrabose Ayirala ,  Muhammad Majid Almajid ,  Ali Abdullah Al-Taq

IPC: E21B36/00 ,  C09K8/512 ,  C09K8/516 ,  E21B33/138

Abstract: A method for sealing a high permeability region in a reservoir is provided. The method includes injecting a gel precursor solution into a high permeability region in a reservoir, injecting a sodium nitrite solution proximate to the high permeability region, and injecting an ammonium chloride solution proximate to the high permeability region. The ammonium chloride solution and the sodium nitrite solution are mixed proximate to the high permeability region. The ammonium chloride solution and the sodium nitrite solution are allowed to react, increasing the temperature of the reservoir proximate to the high permeability region. The gel precursor solution is allowed to react to form a solid gel in the high permeability region.

公开(公告)号：US20240368451A1

公开(公告)日：2024-11-07

申请号：US18310299

申请日：2023-05-01

Applicant: Saudi Arabian Oil Company

Inventor： Hamoud Alqahtani ,  Zuhair Ali AlYousif ,  Subhash Chandrabose Ayirala ,  Muhammad Majid Almajid ,  Ali Abdullah Al-Taq

IPC: C09K8/516 ,  C09K8/512 ,  E21B33/138

Abstract: A method for sealing a high permeability region in a reservoir is provided. The method includes injecting a gel precursor solution into a high permeability region in a reservoir, injecting a sodium nitrite solution proximate to the high permeability region, and injecting an ammonium chloride solution proximate to the high permeability region. The ammonium chloride solution and the sodium nitrite solution are mixed proximate to the high permeability region. The ammonium chloride solution and the sodium nitrite solution are allowed to react, increasing the temperature of the reservoir proximate to the high permeability region. The gel precursor solution is allowed to react to form a solid gel in the high permeability region.