A method for accessing a subterranean zone from the surface includes
drilling a substantially vertical well bore from the surface to the
subterranean zone and forming a slot cavity in the substantially vertical
well bore proximate to the subterranean zone. The slot cavity comprises a
substantially non-cylindrical shape. The method also includes drilling an
articulated well bore from the surface to the subterranean zone. The
articulated well bore is horizontally offset from the substantially
vertical well bore at the surface and intersects the substantially
vertical well bore at a junction proximate to the subterranean zone. The
method may include drilling the articulated well bore to intersect the
slot cavity of the substantially vertical well bore and drilling a
substantially horizontal drainage pattern from the slot cavity into the
subterranean zone. The subterranean zone may comprise a coal seam.