| 摘要 |
<p>In accordance with one embodiment of the present invention, a subterranean drainage pattern for accessing a subterranean zone includes at least one undulating well bore. The undulating well bore includes at least one inclining portion drilled through the subterranean zone at an inclination sloping toward an upper boundary of the single layer of subterranean deposits and at least one declining portion drilled through the subterranean zone at a declination sloping toward a lower boundary of the single layer of subterranean deposits. At least one bending portion couples the at least one inclining portion and the least one declining portion to form a waveform.</p> |
