Downhole oilfield tubulars
US7740077B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2006 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The installation and use of abrasion and corrosion resistant polyolefin and polyolefin blend liners in the production or injection string of a well is shown. The lining is employed for the principal purpose of reducing wear or corrosion on the tubing string or wear on the associated production equipment. In a preferred embodiment of the invention, the polymer liner is characterized by polypropylene material, which is abrasion resistant and which has a coefficient of friction that is lower that the coefficient of friction of metal tubing. Also, disclosed herein are tubular goods and tubular good liners which decrease or eliminate friction and mechanical wear and decrease or eliminate chemical corrosion to the walls of the tubular good. The liners may include a diffusion barrier, an adhesive, and a friction and wear resistant layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.