公开(公告)号：US3917344A

公开(公告)日：1975-11-04

申请号：US49969974

申请日：1974-08-22

申请人： ATLANTIC RICHFIELD CO

发明人： JANSSEN ALBERT T ,  NARAYAN KAILASH

IPC分类号： E21C41/24 ,  E21C41/10

CPC分类号： E21C41/24

摘要： A system for in situ retorting and recovery of carbonaceous values from underground formations of oil shale. A plurality of parallel access entries communicating with the surface extend horizontally at a level beneath the formation. Upright retort chambers are arranged at spaced intervals on opposite sides of each access entry. The bottom of each chamber is interconnected with one such access entry by means of a sealed transverse tunnel. The retort chambers are ignited from the top and the carbonaceous values released from the shale by a downwardly progressing heat front are collected at the bottom. Oil recovery conduits extend from the surface through vertically directed bore holes opening into the access entry, each such conduit branching at that point to interconnect with opposite pairs of retort chambers through the sealed tunnels. Further conduit means are provided for scavenging gaseous retort products through an annular space surrounding each of the oil recovery conduits so as to apply constant heat to the shale oil while it is being conducted to the surface. Means are also provided for insuring that a positive pressure is maintained in the access entries with respect to the bottom of the retort chambers.

摘要翻译： 一种用于原位蒸馏和从油页岩的地下组织回收碳质值的系统。 与表面通信的多个并行访问条目在地层下方的水平水平延伸。 在每个进入入口的相对侧上以间隔的间隔布置直立的蒸煮室。 每个室的底部通过密封横向隧道与一个这样的进入入口相互连接。 蒸馏室从顶部点燃并且在底部收集由向下的前进热源从页岩释放的碳质值。 油回收管道从表面延伸穿过通向进入入口的垂直定向的钻孔，每个这样的管道在该点处分支，以通过密封的隧道与相对的一对蒸馏室相互连接。 提供了另外的导管装置用于通过围绕每个油回收管道的环形空间来清除气态蒸煮产物，以便在页岩油被传导到表面时对其施加恒定的热量。 还提供了用于确保相对于蒸煮室的底部在进入入口中保持正压的装置。