More than one-quarter of the world's oil and almost one-fifth of the world's natural gas come from offshore, even though offshore drilling is six to seven times more expensive than drilling on land.

全球超过四分之一的石油和近五分之一的天然气来自近海，尽管近海钻探的成本是陆地钻探的六到七倍。

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The number of drilling permits granted on federal land in Colorado rose from 79 in 1996 to 650 in 2006.

在科罗拉多州，允许在联邦土地上进行钻探的许可证数量从1996年的79张增长到2006年的650张。

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But neither the Forest Service nor the Park Service can control what happens on private land at a bottleneck, nor on Bureau of land Management parcels within the drilling fields south of Pinedale.

但是，不管是森林管理局，还是公园管理局都无法控制在瓶颈处私人领地上发生的事，也无法控制在派恩·代尔南部土地管理局地块上的钻井地点发生的事。

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Some were on land. Others were on ocean oil-drilling structures.

VOA: special.2009.03.22

For years, she heard Indians complain of not getting payment from the government for the oil-drilling and ranching leases on their land.

ECONOMIST: Justice for Indians

Money manager Adam Newar with Eden Capital Management in Houston likes Nabors Industries and Patterson Energy, which focus on drilling low-risk gas wells on land.

FORBES: Roughneck stocks

San Antonio-based Pioneer Drilling is a contract driller, but does its business on land in Oklahoma and throughout Texas and the Rocky Mountains.

FORBES: Magazine Article