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Green drilling to protect the environment

CNPC integrated environmental protection into the whole well-drilling cycle and took all kinds of measures to protect surface and underground water. During the drilling process, we used ecofriendly mud, strengthened recycling of drilling waste, and conducted standard treatment of waste liquid. By the end of 2016, CNPC recycled 1.05 million tons of drilling waste, and the reuse rate of waste liquid reached 80%.

greendrilling

The green drilling philosophy and technology was widely applied in CNPC’s global operation. For example, in Chad, the Company used the close-loop treatment system to separate, treat and reuse waste mud, and turned it into mud plate and clean water to be used in well station construction and mud mixing.