Downhole oilfield tubulars

Details Downhole oilfield tubulars Downhole oilfield tubulars

2006-01-31

2010-06-22

Bomar, Shane (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S242100, C138S140000

Reexamination Certificate

active

07740077

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.

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