公开(公告)号：US20240026210A1

公开(公告)日：2024-01-25

申请号：US18373322

申请日：2023-09-27

Applicant: ENI S.P.A.

Inventor： Davide MOSCATELLI ,  Lucilla DEL GAUDIO ,  Paola ALBONICO ,  Alessandra BELLONI ,  Alberto CESANA

IPC: C09K8/502 ,  C09K8/516 ,  C09K8/588 ,  E21B43/20

CPC classification number: C09K8/502 ,  C09K8/516 ,  C09K8/588 ,  E21B43/20

Abstract: A treatment fluid may be suitable for a hydrocarbon fluid extraction well. Such a treatment fluid may include a water-in-oil emulsion. The water-in-oil emulsion may include: an oily continuous phase; and an aqueous discontinuous phase comprising water and a plurality of particles comprising a hydrogel comprising a cationic polymer. The cationic polymer may include, in polymerized form, a monomer with one or more cationic groups. The cationic group may be a —N+—R1R2R3 group, wherein R1, R2, and R3, are independently H or a C1 to C4 alkyl group.

公开(公告)号：US20220169910A1

公开(公告)日：2022-06-02

申请号：US17440985

申请日：2020-03-19

Applicant: ENI S.P.A.

Inventor： Davide MOSCATELLI ,  Lucilla DEL GAUDIO ,  Paola ALBONICO ,  Alessandra BELLONI ,  Alberto CESANA

IPC: C09K8/502 ,  C09K8/516 ,  C09K8/588 ,  E21B43/20

Abstract: A method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir containing: supplying a water-in-oil emulsion an oily continuous phase and an aqueous discontinuous phase containing a plurality of particles of at least one hydrogel containing a cationic polymer; and positioning the water-in-oil emulsion in contact with the underground reservoir. The present invention also concerns a treatment fluid for hydrocarbon fluid extraction wells containing the aforementioned water-in-oil emulsion and the related preparation process.