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Neither Sinopec nor its rival, PetroChina, has announced any other large fields despite extensive drilling. Both of these state-controlled companies said in March that they were still drilling actively for shale gas in China even as they cut their worldwide exploration budgets for oil and gas after weak results.
Sinopec and PetroChina, which will hold earnings conferences on Monday and Thursday, respectively, are targets of broad government inquiries into possible corruption, including in their contracts with outside vendors. This has made their executives reluctant to approve further shale drilling contracts, said a Chinese oil industry executive who insisted on anonymity because of the legal issues involved.
China needs to develop better technology before tackling many of its shale deposits, said another executive, Yin Shenping, the chairman and chief executive of Recon Technology, a shale gas services company based in Beijing. “It’s obvious that the country has now decided to slow down the drilling process,” he said.
Lower expectations for shale gas have resulted in greater interest in another category of unconventional gas, so-called coal bed methane. In this process, natural gas is gathered by drilling into underground coal seams.
The United States, Australia and other countries have used this method for several decades. But they often tap the natural gas before coal extraction begins, to reduce the risk that gas will explode in coal mines.
China’s problem is that many of its coal fields already have working mines. China has 13 percent of the world’s coal reserves but 47 percent of the world’s production. Many Chinese coal mine operators have opposed nearby coal bed methane production, fearing that pumping sand and chemicals into wells to liberate gas might have the unintended effect of driving gas into their mines.
The Chinese government has negotiated with mine operators and villages here in Shouyang, 220 miles southwest of Beijing, to authorize a large coal bed methane project, led by Far East Energy Corporation, based in Houston. Michael R. McElwrath, chief executive of Far East Energy, said he believed the project would improve coal field safety by removing explosive gas from subterranean seams.
But the Shouyang coal field is unusual within China because the coal is fairly permeable, allowing gas to flow underground. If there are no more discoveries of permeable coal, Mr. McElwrath said, “we will have a nice little project but the industry will not take off.”
Far East Energy faces its own issues. In June, the company announced that it had shut a quarter of its 160 wells for various reasons, such as gummy gels or a lack of gas-gathering pipelines; it plans to restart most of those wells later. “We are considering a variety of strategic transactions to fund the coming year’s drilling activities,” Mr. McElwrath said, declining to elaborate.
Crews have been working here over the last several years, laboring in a countryside of yellow dirt so soft that even small streams cut steep-flanked gorges 50 feet deep or more. Some of the locally rented equipment uses designs seldom seen in the United States since World War II, an indication that China still lags in drilling rig technology. At each location, workers struggle with the many idiosyncrasies.
“In the United States, it comes to the surface easier,” said Robert Hockert, a longtime Wyoming shale gas and coal bed methane drilling manager who is now the China country manager for Far East Energy. “Here, you’ve got to work at it.” (NY Times)
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