Practice proved that adding chemicals not only decreases the viscosity of crude but also the back pressure of well head decreased.

实践证明，掺污水加药既可以降低原油粘度，又可以有效地降低井口回压。

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Adding downward pressure, Brazilian oil giant Petrobras said its oil output was back at full capacity and would remain so through the end of a five-day energy workers strike that started at midnight Sunday.

FORBES: Crude Takes A Header

For Eric Breteau, "children had to be brought back at any price", she told the court, adding that she believed he was under "a certain pressure" from the families wishing to adopt the "orphans".

BBC: Two French charity workers jailed in 'false orphans' case