摘要
随着美国保德河和圣胡安盆地裸眼煤层甲烷项目的成功开发，20世纪90年代末，澳大利亚的经营者们开始钻探裸，眼垂直并。此后的几年间，澳大利亚早期煤层甲烷经营者凭借着自身的聪明才智、积极创造和灵活变通，使气井设计取得了世界上其它任何煤层甲烷开发项目中前所未有的进展。这些经营者目前正在实施结构复杂的多层多边地表内层（SIS）气井设计，这种设计有望开采全球的煤层甲烷储层。
Following the success of openhole CBM projects in the Powder River and San Juan Basins of the United States, operators in Australia began drilling openhole vertical wells in the late 1990s. Over the next few years, the ingenuity, creativity, and flexibility of the early Australian CBM operators led to evolutions in well designs previously unseen in any other CBM development in the world. These operators are now implementing complex multiseam, multilateral surface-to- inseam （SIS} well designs that show promise for unlocking CBM reservoirs worldwide.
