Patent ID: 11867017
Assignee: AXIS SERVICE, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A pressure control system to seal a wireline comprising:
a first pressure control section comprising: (a) a first upper bushing and a first lower bushing; (b) a first resilient sealing member, which is between the first upper bushing and the first lower bushing, including a first channel to receive a wireline; and (c) a first piston coupled to a first port;
a second pressure control section comprising: (a) a second upper bushing and a second lower bushing; (b) a second resilient sealing member, which is between the second upper bushing and the second lower bushing, including a second channel to receive the wireline; and (c) a second piston coupled to a second port;
a third pressure control section comprising: (a) a third upper bushing and a third lower bushing; (b) a third resilient sealing member, which is between the third upper bushing and the third lower bushing, including a third channel to receive the wireline; and (c) a third piston coupled to a third port;
a first void at least partially below the first piston, a second void at least partially between first and second pistons, and a third void at least partially between the second and third pistons;
a first auxiliary port coupled to the first void, a second auxiliary port coupled to the second void, and a third auxiliary port coupled to the third void;
wherein each of the first, second, and third pistons is respectively configured to slide, independently of one another and non-simultaneously with one another, towards the first, second, and third resilient sealing members to respectively compress the first, second, and third resilient sealing members and consequently seal the first, second, and third resilient sealing members around the wireline;
wherein the first port is not fluidly coupled to the first void, the second port is not fluidly coupled to the second void, and the third port is not fluidly coupled to the third void.