公开(公告)号：US4615564A

公开(公告)日：1986-10-07

申请号：US700038

申请日：1985-02-11

申请人： Emmitt G. Garrett

发明人： Emmitt G. Garrett

IPC分类号： E21B21/14 ,  E21B43/29 ,  E21B43/34 ,  E21C37/12

CPC分类号： E21B21/14 ,  E21B43/29 ,  E21B43/34

摘要： The invention is an improvement in borehole mining which overcomes the conventional problem in hydraulic mining of removing rock fragments and ore from beneath the surface by utilizing a foam/air conveyance technique. This eliminates the need for a pump and overcomes the drawback of short pump life that is ordinarily encountered when pumps are engaged in pumping fluid slurries containing a high component of fragmented rock. A foaming agent, such as an organic sulfonic acid surfactant is introduced into the borehole, preferably combined in the water used to dislodge the particles thereby foaming during mining. The foam containing the entrained particles is removed to the surface by a gas, e.g., air under sufficient pressure and rate to maintain the flow from the well bore. The foam is broken at the surface by conventional methods and the mined particles recovered.

摘要翻译： 本发明是钻孔开采的改进，其克服了通过利用泡沫/空气输送技术在水下开采中从表面下方去除岩石碎片和矿石的常规问题。 这消除了对泵的需要，并且克服了当泵接合泵送包含碎片岩石的高组分的流体浆料时通常遇到的短泵寿命的缺点。 将诸如有机磺酸表面活性剂的发泡剂引入钻孔中，优选在用于移除颗粒的水中组合，从而在开采期间发泡。 含有夹带的颗粒的泡沫通过气体例如空气在足够的压力和速率下被移除到表面以保持来自井眼的流动。 通过常规方法在表面破裂泡沫，并回收开采的颗粒。