The Shengli Oilfield, under China Petrochemical Corp (Sinopec Group), the country's largest oil refiner, said its Jiyang ...

"With the support of these tools and gadgets, China National Petroleum Corporation has drilled through 12 layers of rock, finally ending at a rock formation from 500 million years ago," it said.

China National Petroleum Corp announced on Thursday that ... ultimately reaching high-quality oil- and gas-producing rock formations between 10,851 and 10,910 meters. "This marks the first ...