| 摘要 |
A method for treating tubulars, e.g. a pipeline, wherein an ungelled gelatin solution is mixed with fluids flowing through the tubular to deposit a treatment layer onto the wall of the tubular. The ungelled gelatin is injected into the flowing fluids at a temperature which is at or above the temperature of the fluids in the pipeline. This keeps the gelatin solution liquid (i.e. ungelled) even after mixing with the fluids. Gelatin derived from collagen is mixed with a liquid (e.g water) and heated. A separate treating solution (e.g. anti-freeze, corrosion inhibitor, and/or a drag reducer) can be added into the ungelled gelatin solution as it is mixed. The concentration of gelatin in the solution concentration of gelatin in said ungelled solution is the maximum amount which will allow the solution to remain ungelled at said the temperature of the flowing fluids.
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