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Considerations

 
 

Considerations Before Using Western Falcon Liners

Western Falcon liners have been successfully deployed in over 40,000 wells: yet, they are not appropriate for all environments and applications. Western Falcon regularly refuses to deploy its products into environments that can damage, attack or deform the liner. Please contact your Western Falcon representative to discuss any specific application in more detail if you have any questions or concerns about environmental or chemical compatibility of the thermoplastic materials in your well. If mishandled or misapplied, Western Falcon liners can be compromised or mechanically damaged.

Environments in the oil and gas industry are very complex and dynamic. It is not uncommon to experience wide variations in pressure, temperature, phase changes, and multiphase flow environments in the same well. Because of the complexity of oilfield environments, the codependence of well conditions and their effect on the thermoplastics used as liner materials, it is desirable to evaluate each operational environment individually and holistically before deploying lined tubulars into a well. When possible, please provide your technical representative with a complete description of your expected well environment and operational practices before using Western Falcon lined tubing. A change in one parameter (pressure or acid gas concentration for example) might decrease the recommended allowable maximum rating of another parameter (temperature for example). Please consider any unusual well operational treatments or services that might damage or compromise the thermoplastic liner and the following points:

  1. All thermoplastics are permeable to gases, particularly small molecules like acid gases. The permeability of the liner is dependent on other factors in the environment. This limits the application of liners in wells such as high pressure gas wells and environments that contain too much CO2 and/or H2S.

  2. The physical and chemical properties of thermoplastics change as a function of the temperature and/or pressure. Please discuss your specific application in detail with a technical representative from Western Falcon if you are using the liner in an extremely high (near the recommended operational limits) or low temperature/pressure environment.

  3. Like other materials used in the oil patch, liners are susceptible to mechanical damage if mishandled. Please refer to the Western Falcon installation and operational procedures webpage for more information on avoiding premature damage to liner materials.

  4. Special procedures designed to minimize damage to thermoplastic liners have been developed for common well operations such as fishing of parted rods, downhole cutting of lined tubing, remediation of surface deposits, etc… Please discuss the latest options with your Western Falcon technical representative before performing such downhole operations.

  5. Western Falcon offers several different liner products. Each product has a unique composition with a unique set of limitations and advantages. By design, Western Falcon liners are different colors for easy field identification. Please verify with your Western Falcon representative that the color/designation of the liner you are installing is correct for your specific application.