公开(公告)号：US11156074B2

公开(公告)日：2021-10-26

申请号：US16561646

申请日：2019-09-05

Applicant: SHELL OIL COMPANY

Inventor： Paul Richard Weider ,  Robert Lawrence Blackbourn ,  Ying Zhang ,  Lee Nicky Morgenthaler ,  Ryan Matthew Van Zanten

IPC: E21B43/22 ,  C09K8/506 ,  C09K8/516 ,  C09K8/72 ,  E21B43/25 ,  E21B43/36

Abstract: An acid-generating fluid includes a thermally activated strong acid precursor. The thermally activated strong acid precursor can include a component selected from aldehydes, ketones, and combinations thereof, in combination with a precursor of a compound adapted to react to liberate sulfur dioxide; or it can include sulfur dioxide in combination with a precursor of a compound adapted to react to liberate a component selected from aldehydes, ketones, and combinations thereof.

公开(公告)号：US10443368B2

公开(公告)日：2019-10-15

申请号：US15667779

申请日：2017-08-03

Applicant: SHELL OIL COMPANY

Inventor： Paul Richard Weider ,  Robert Lawrence Blackbourn ,  Ying Zhang ,  Lee Nicky Morgenthaler ,  Ryan Matthew Van Zanten

IPC: E21B43/25 ,  C09K8/506 ,  E21B43/36 ,  C09K8/516 ,  C09K8/72

Abstract: An acid-generating fluid comprising a thermally activated strong acid precursor is provided in the method of the present invention. The thermally activated strong acid precursor comprises sulfur dioxide or a first precursor of a compound adapted to react to liberate sulfur dioxide, and an aldehyde and/or a ketone or a second precursor of a compound adapted to react to liberate an aldehyde and/or ketone. The acid-generating fluid is placed into a subterranean formation, where the first precursor and/or the second precursor are thermally activated, thereby liberating sulfur dioxide and the aldehyde and/or ketone. The sulfur dioxide and the aldehyde and/or ketone are reacted to form a thermally activated strong acid.

公开(公告)号：US11603491B2

公开(公告)日：2023-03-14

申请号：US17483033

申请日：2021-09-23

Applicant: SHELL OIL COMPANY

Inventor： Paul Richard Weider ,  Robert Lawrence Blackbourn ,  Ying Zhang ,  Lee Nicky Morgenthaler ,  Ryan Matthew Van Zanten

IPC: C09K8/76 ,  C09K8/506 ,  C09K8/516 ,  C09K8/72 ,  E21B43/25 ,  E21B43/22

Abstract: An acid-generating fluid includes a thermally activated strong acid precursor. The thermally activated strong acid precursor can include a component selected from aldehydes, ketones, and combinations thereof, in combination with a precursor of a compound adapted to react to liberate sulfur dioxide; or it can include sulfur dioxide in combination with a precursor of a compound adapted to react to liberate a component selected from aldehydes, ketones, and combinations thereof.

公开(公告)号：US20220025752A1

公开(公告)日：2022-01-27

申请号：US17483033

申请日：2021-09-23

Applicant: SHELL OIL COMPANY

Inventor： Paul Richard WEIDER ,  Robert Lawrence Blackbourn ,  Ying Zhang ,  Lee Nicky Morgenthaler ,  Ryan Matthew Van Zanten

IPC: E21B43/36 ,  C09K8/506 ,  C09K8/516 ,  C09K8/72 ,  E21B43/25

Abstract: An acid-generating fluid includes a thermally activated strong acid precursor. The thermally activated strong acid precursor can include a component selected from aldehydes, ketones, and combinations thereof, in combination with a precursor of a compound adapted to react to liberate sulfur dioxide; or it can include sulfur dioxide in combination with a precursor of a compound adapted to react to liberate a component selected from aldehydes, ketones, and combinations thereof.