URUMQI, Jan. 10 (Xinhua) -- The Tarim oilfield branch of PetroChina, China's largest oil and gas producer, said Friday that its drilling capacity can reach 10,000 meters after several years of technological research.
Located in northwest China's Xinjiang Uygur Autonomous Region, Tarim Basin is the largest petroliferous basin in China and one of the most difficult to explore due to its harsh ground environment and complicated underground conditions.
According to the Tarim Oilfield, the depth of oil and gas reservoirs in the Tarim Basin is generally 6,000 to 10,000 meters after several tectonic deformations in the basin. The ultra-deep oil and gas resources in the basin account for more than 60 percent of the total onshore ultra-deep oil and gas resources in China.
As China's major onshore oil and gas producer, the natural gas output of the Tarim Oilfield accounted for one-sixth of China's total domestic gas output.
The company said about 90 percent of oil and gas reservoirs they have found since 2011 are in ultra-deep layers. In addition, the company drilled more than 220 ultra-deep wells above 6,000 meters in the Tarim Basin in the past two years, accounting for more than half of China's ultra-deep wells. Enditem