Patent ID: 11867003
Assignee: CONOCOPHILLIPS COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A method for extending reach in a well having a well wall, the method comprising:
receiving a second coiled tubing string concentrically within a first coiled tubing string;
receiving a fluid within an annulus, the annulus defined by a first coil interior surface of the first coiled tubing string and a second coil exterior surface of the second coiled tubing string, wherein the first coiled tubing string has a first length, and the second coiled tubing string has a second length, the first length being different than the second length;
receiving a first seal proximal to a top end of the first coiled tubing string; and
receiving a second seal proximal to a bottom end of the first coiled tubing string, the first seal and the second seal sealing the fluid within the annulus at a pressure prior to deployment in the well.