Patent ID: 11970921
Assignee: RUBBERATKINS LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A downhole sealing apparatus configured to engage a bore wall or bore-lining tubular wall so as to seal an annulus between the downhole sealing apparatus and said bore wall or bore-lining tubular wall, and wherein the downhole sealing apparatus comprises:
a sealing assembly, wherein the sealing assembly comprises one or more seal elements configured to engage the bore wall or bore-lining tubular wall so as to seal the annulus between the downhole sealing apparatus and said bore wall or bore-lining tubular wall; and
a bypass arrangement configured to provide selective bypass of the sealing assembly, wherein the bypass arrangement comprises a fluid passage formed in a mandrel or sleeve,
wherein the downhole sealing apparatus is reconfigurable between a first configuration in which the bypass arrangement permits bypass of the sealing assembly and a second configuration in which the bypass arrangement prevents or restricts bypass of the sealing assembly,
wherein the downhole sealing apparatus is reconfigurable from the first configuration to the second configuration by movement of the sealing assembly, and
wherein said one or more seal elements configured to engage the bore wall or bore-lining tubular wall are axially movable relative to said mandrel or sleeve between a first position when the downhole sealing apparatus is in said first configuration and a second position when the downhole sealing apparatus is in said second configuration.