Top Chinese oil and gas major PetroChina is exploring shale oil in an aging western China basin and aims to build a pilot zone to pump one million tonnes of crude a year, or about 20,000 barrels per day (bpd), by 2025.
The state giant started drilling four horizontal wells in Yingxiongling in Qinghai oilfield, part of the Qaidam basin in western province of Qinghai where oil exploration began in the 1950s, Petrochina's parent company CNPC said on Tuesday.
PetroChina aimed to build the pilot zone with annual production of 100,000 tonnes this year, expanding to 500,000 tonnes a year by 2023, after having achieving breakthroughs in explorations in 2021, CNPC said on its website.The shale oil structure is located at an average altitude of 3,200 to 3,800 metres above sea level and is typically of high pressure and high output, the company said.
China produces only 35,000 bpd of shale oil mostly in the northern Ordos basin and northwestern Jungar basin, less than 1% of national oil output. Under Beijing's call to enhance domestic energy supply security, state energy giants are spending more to develop more geologically challenging formations to compensate for fast declining reserves in mature oilfields like Daqing.
China, which imports more than 70% of its crude needs, intends to maintain domestic oil production at about 4 million bpd for years to come.Reporting by Chen Aizhu; Editing by Edmund BlairSubscribe to our sustainability newsletter to make sense of the latest ESG trends affecting companies and governments.
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