China’s shale gas production is picking up speed as it seeks to capitalise on the world’s highest estimated shale reserves. However, the communist-ruled nation is far from following in the footsteps of America’s shale boom, with analysts predicting China will miss its 2020 output targets by a wide margin.
Nevertheless, China’s progress toward unlocking its shale gas reserves was highlighted by an April 17 report by the consultancy Wood Mackenzie. The report said China’s shale industry reached nearly 600 wells and nine billion cubic meters (bcm) of production in 2017, with output expected to nearly double to seventeen bcm by 2020.
Yet despite its progress, China is predicted to miss its 2020 target of 30 bcm. That failure was announced in its thirteenth energy sector five-year plan, which said the mark would be missed “by a considerable margin,” resulting in an estimated thirteen bcm supply gap.
In comparison, U.S. drillers produced 474.6 bcm of natural gas from shale in 2017 alone.
“China is eager to materialize its shale gas potential to fuel its massive gasification initiative and support rising demand growth,” Wood Mackenzie’s Tingyun Yang said.
“To meet the government’s thirty bcm target, up to 725 additional wells are needed by 2020 on top of the nearly 700 new wells. This will double the amount of investment needed in the base-case drilling plan. The required well number could be larger if well productivity degrades. This is a mammoth task for the Chinese NOCs (national oil companies).”
Chinese NOCs have succeeded in slashing costs by improving drilling techniques, along with improved geological understanding and technical experience. Wood Mackenzie estimates this has resulted in a forty percent cost reduction for exploration wells compared to 2010 levels, and a twenty five percent drop for commercial wells compared to 2014.
However, China’s production costs remain far higher than in the United States, which built its shale revolution on competitive and open markets, active small explorers, developed infrastructure and readily available expertise.
“None of these [factors] hold true for China,” Wood Mackenzie said.
Instead, China’s shale formations tend to be deeper, more tectonically fractured and often less-pressured than U.S. shale plays. Furthermore, China’s increased well depth results in higher costs and more challenges in maintaining well integrity while drilling.
Additionally, most of China’s shale plays (such as Sinopec’s Fuling, PetroChina’s Changning-Weiyuan and Zhaotong projects) are located in mountainous terrain. This means operators are faced with the challenge of removing mountainous land to host well sites, along with building their own infrastructure and transporting drilling crews and equipment across vast distances.
The consultancy has also found that high population density, land access issues and water scarcity also makes drilling and hydraulic fracturing harder.
These findings are also backed up by research from the Oxford Institute for Energy Studies. One of their researcher’s Fan Gao noted in a 2012 report that most shale gas-bearing regions in China are located in water-scarce locations, challenging producers given the need for large volumes of water in its development.
“Water availability alone rules out the development of a number of sedimentary basins with promising unconventional resource potentials in northern and western China,” Gao wrote.
Lured by China’s estimated 1,115 trillion cubic feet (tcf) of shale reserves (America’s were estimated at 622 tcf), oil majors such as BP, Exxon, Shell and Total all ventured into China during the first few years of the decade, but “all exited after lackluster results.” Only BP remains, with two undeveloped shale production sharing contracts.
China’s regulated gas price and infrastructure bottlenecks may also hold back further investment, with the NOCs playing the central role compared to private companies in the United States.
Yet the Chinese industry is making progress on cutting costs.
A recent turnkey contract for the completion of four Sichuan wells by domestic oil services company Honghua Group points to further cost-cutting. Wood Mackenzie said the contract implied an “all-in” cost of $7-$7.5 million per well, down twenty percent on last year’s estimated well costs.
“While we do not expect a Chinese shale gas boom anytime soon, the NOCs will no doubt continue to push on and innovate, driven by the need to secure and develop energy resources for strategic reasons,” Yang said.
Beijing is also supporting the local industry, recently cutting the resource tax on shale gas by thirty percent to stimulate production, along with providingother subsidies.
However, the central planning model has its limits, as shown by last winter, when parts of China were reportedly left without heating due to a lack of gas to replace previous coal generation capacity. While total gas production is increasing, it continues to trail demand, resulting in record high imports of liquified natural gas (LNG) last year.
Other challenges to China’s shale ambitions include a potential environmental backlash from affected communities.