公开(公告)号：US20200216747A1

公开(公告)日：2020-07-09

申请号：US16648270

申请日：2018-09-19

Applicant: BASF SE

Inventor： Christian BITTNER ,  Ashok Kumar MISHRA ,  Kathrin COHEN ,  Clara Maria HERNANDEZ MORALES ,  Prapas LOHATEERAPARP ,  Hans-Christian RATHS ,  Michael BUESCHEL ,  Gabriela ALVAREZ JUERGENSON ,  Thomas ALTMANN ,  Benjamin WENZKE

IPC: C09K8/584

Abstract: The invention relates to a process for mineral oil production, in which an aqueous saline surfactant formulation comprising a surfactant mixture of at least one anionic surfactant of the general formula R1—O—(CH2C(CH3)HO)x, —(CH2CH2O)y—SO3M and at least one amionic surfactant of the general formula R2—O—(CH2CH2O)2—SO3M and a base is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes. The invention further relates to the surfactant mixture, a concentrate comprising the surfactant mixture and a manufacturing process as well as the use of the surfactant mixture and the con- centrate in the production of mineral oil from underground mineral oil deposits.