1. Cleaning capacity analysis: The foam pig study shows that the cleaning capacity of a foam pig in a subsea pipeline can be measured from the perspective of contact stress and contact area.
2. The influence of interference on cleaning ability: the interference of foam pig is generally 2.0%~4.0%, and the cleaning ability of pigs with different interference in the same pipeline will be different.
3. Effect of friction on cleaning ability: The friction of the pipe wall makes the axial contact stress distribution on the surface of the pig uneven, which indicates that friction will affect the cleaning effect of the foam pig on chemical dirt.
4. Influence of foam density: The density of the pig only affects the size of the contact stress, and has no effect on the distribution of the contact stress. This means that the density of the foam pig can be adjusted to suit different cleaning needs.
5. Practical application effect: In practical application, the application effect evaluation of foam pig in Zizhou gas field shows that it has a good cleaning effect.
In summary, the foam pig can effectively remove the chemical dirt in the pipeline, and its cleaning effect is affected by various factors such as interference, pipe conditions, friction, etc. By adjusting these parameters, the cleaning effect of the foam pig can be optimized, making it more effective when dealing with chemical fouling.
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