公开(公告)号：US20200181479A1

公开(公告)日：2020-06-11

申请号：US16585908

申请日：2019-09-27

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Syed M. Shakil HUSSAIN ,  Muhammad Shahzad KAMAL

IPC: C09K8/584 ,  B01F17/00 ,  C09K8/588

Abstract: Amidoamine-based gemini surfactants having dual chains connected via an alkyl linker. Each chain contains a quaternary ammonium head group and an ethoxylated alkyl tail. Properties of the surfactant including thermal stability, critical micelle concentration, and foam stability are specified. A method of recovering oil from a reservoir using an aqueous composition that contains the surfactant and a polymer (e.g. AM-AMPS) is also provided. This method is particularly effective for oil recovery in reservoirs of high temperature and/or high salinity.

公开(公告)号：US20230132932A1

公开(公告)日：2023-05-04

申请号：US18052231

申请日：2022-11-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Syed M. Shakil HUSSAIN ,  Muhammad Shahzad KAMAL ,  Abdullah S. SULTAN

IPC: C07C237/16 ,  C09K8/584 ,  C07C381/06 ,  C11D1/00 ,  C07C233/36 ,  C07C233/38

Abstract: The invention concerns synthesized amido-amine-based cationic gemini surfactants with flexible and rigid spacers and different hydrophobic. These gemini surfactants were prepared by modified procedure through amidation of long chain carboxylic acids using 3-(dimethylamino)-1-propylamine followed by treatment with halohydrocarbons and showed excellent thermal stability and surface properties useful for various oilfield applications such as enhanced oil recovery.

公开(公告)号：US20190256458A1

公开(公告)日：2019-08-22

申请号：US16281849

申请日：2019-02-21

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Syed M. Shakil HUSSAIN ,  Muhammad Shahzad KAMAL ,  Abdullah S. SULTAN

IPC: C07C237/16 ,  C09K8/584

Abstract: The invention concerns synthesized amido-amine-based cationic gemini surfactants with flexible and rigid spacers and different hydrophobic. These gemini surfactants were prepared by modified procedure through amidation of long chain carboxylic acids using 3-(dimethylamino)-1-propylamine followed by treatment with halohydrocarbons and showed excellent thermal stability and surface properties useful for various oilfield applications such as enhanced oil recovery.

公开(公告)号：US20200263077A1

公开(公告)日：2020-08-20

申请号：US16444435

申请日：2019-06-18

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Syed M. Shakil HUSSAIN ,  Muhammad Shahzad KAMAL

IPC: C09K8/584 ,  C09K8/588

Abstract: A method of recovering oil from a reservoir using an aqueous composition that contains an unsaturated zwitterionic surfactant and a copolymer. The unsaturated zwitterionic surfactant is an amidoamine-based surfactant having a sulfonate head group and an alkenyl tail. The copolymer contains reacted units of acrylamide and 2-acrylamido-2-methylpropane sulfonic acid (AM-AMPS). This method is particularly effective for enhanced oil recovery in carbonate reservoirs of high temperature and/or high salinity.