| 摘要 |
<p>A system for accessing a subterranean zone (22) from the surface includes an entry well bore (15) extending down from the surface. A plurality of slanted well bores extend from the entry well bore (20) to the subterranean zone. Drainage patterns (24, 26, 27) extend from the slanted well bores (20) into the subterranean zone (22).</p> |
