Method and apparatus for running spooled tubing into a well
US6491107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Nov 29, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pair of spooled tubing strings are simultaneously run into a hydrocarbon well carrying a chamber providing a check valve. The chamber is positioned below a hydrocarbon formation so that liquid produced from the formation falls adjacent and passes into the chamber through the check valve. Periodically, gas is delivered through one of the spooled tubing strings to push liquid out of the chamber upwardly through the other of the tubing strings. Gas produced from the formation flows upwardly in an annulus between the spooled tubing strings and a production string in the well. The apparatus can be used to run only one string of tubing into a well and has a number of features, including measuring the load applied to the tubing string and measuring the amount of tubing run into or out of a well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.