| 美国由北到南在尝试着新的页岩油采油工艺 |
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美国由北到南在尝试着新的页岩油采油工艺，可使油井的产量更加均衡而不是快速的衰减。今天虽少出了一桶但明天可多出两三桶，而这绝非是零和法则。
The Canadian producer is among a growing number of companies that are restricting initial output—a process known as choking back—in basins from North DakotatoTexas. They’re conceding huge up-front gushers of crude in exchange for smaller production declines over time so that the wells ultimately generate more oil.
The strategy sacrifices one of the biggest benefits from shale. The early gushers paid back investments fast, allowing companies to pour capital into new projects. Instead, Encana and others envision a future with a more stable flow from wells, so that they don’t always have to keep drilling simply to maintain output.
“You’re losing a barrel today to get two or three barrels tomorrow,” said Allen Gilmer, inAustin. “It’s not a zero-sum game.”
（摘自：文/DAN MURTAUGH and REBECCA PENTY） |