CNPC Greatwall Drilling Company (GWDC), a subsidiary of China National Petroleum Corporation (CNPC), is engaged in the worldwide business of petroleum engineering and technical services. Our business scope covers various processes of petroleum engineering and technical services, including four professional sections of well drilling, well logging & testing, downhole operation, oil and gas E&P, and a integratied service section. Our domestic business is distributed in 17 provinces and autonomous regions, while the internationgal business in 32 countries. With technology-surpporting system and series of Special Technologies, we possess capacity of operating in various surface and underground conditions worldwide.
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