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1. 发明授权

US09677398B2 Use of ventilation air methane exhausted during mining of non-combustible ore in a surface appliance 有权
公开(公告)号：US09677398B2
公开(公告)日：2017-06-13
申请号：US13446952
申请日：2012-04-13
申请人： Ronald O. Hughes , Bryan M. Mortimer , David M. Hansen
发明人： Ronald O. Hughes , Bryan M. Mortimer , David M. Hansen
IPC分类号： E21F7/00 , E21C41/20 , F23G5/46 , F23G7/06
CPC分类号： E21C41/20 , E21F7/00 , F23G5/46 , F23G7/06 , F23G2206/203 , Y02E20/12
摘要： Utilization of mine methane produced by mining a non-combustible ore, such as trona, as an energy source for heat, steam, and/or power generation. Such utilization is beneficial for a surface appliance which is close to surface outlet(s) of mine methane recovery system(s). A method for reducing greenhouse gas emissions generated during mining of a non-combustible ore uses the combustion of co-produced mine methane. The mine methane is recovered in a mine ventilation air exhaust with very low methane content, and may be additionally recovered in a drainage gas, such as gob gas, with much higher methane content. The surface appliance may be selected from the group consisting of calciner, dryer, boiler, kiln, furnace, engine, turbine, power generation unit, co-generation unit, and any combinations thereof. Benefits may include reduction in energy purchases, reduction in greenhouse emissions, and/or gain through sale of carbon credits to the carbon market by registering carbon reductions.

2. 发明授权

US08740310B2 Mining method for co-extraction of non-combustible ore and mine methane 有权
标题翻译：共同提取不可燃矿石和矿山甲烷的采矿方法
公开(公告)号：US08740310B2
公开(公告)日：2014-06-03
申请号：US12487802
申请日：2009-06-19
申请人： Larry Refsdal , Ronald O. Hughes , Bryan M. Mortimer , Richard A. Hodgson , Joseph A. Vendetti
发明人： Larry Refsdal , Ronald O. Hughes , Bryan M. Mortimer , Richard A. Hodgson , Joseph A. Vendetti
IPC分类号： E21F7/00
CPC分类号： E21B43/006 , E21C41/22
摘要： A method for co-extracting non-combustible ore (e.g., trona) and methane from an underground formation comprising at least one methane-bearing layer and a non-combustible ore bed having a rock roof, comprising: providing a well having a downhole end positioned above the ore bed roof; mining an ore region from an initial cavity and removing the mined ore, thereby creating a subsequent cavity; advancing the mining step to another ore region from the subsequent cavity; allowing the roof of the initial cavity to cave so as to create a gob; repeating the mining, advancing and caving steps, the caving being effective in generating fluid communication between the gob and the well downhole end and in fracturing the methane-bearing layer so as to release methane into the gob; and recovering a gob gas comprising released methane through the well to the surface.
摘要翻译：一种用于从包括至少一个含甲烷层和具有岩顶的不可燃矿床的地下地层中共同提取不可燃矿石（例如天然碱）和甲烷的方法，包括：提供具有井下端位于矿床屋顶上方; 从初始腔中开采矿石区域并移除开采的矿石，从而形成随后的空腔; 将采矿步骤从后续空腔推进到另一个矿区; 允许初始腔的屋顶塌陷以产生料滴; 重复采矿，推进和塌陷步骤，洞穴有效地产生料滴和井下井之间的流体连通，并且在瓦解含甲层的压裂中将甲烷释放到料滴中; 以及将包含释放的甲烷的气体气体通过所述井回收到所述表面。

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