首页> 外国专利> METHOD AND PROCESS FOR SHALE OIL AND GAS EXTRACTION BY FRACTURING AND CHEMICAL RETORTING IN OIL SHALE IN SITU HORIZONTAL WELL

METHOD AND PROCESS FOR SHALE OIL AND GAS EXTRACTION BY FRACTURING AND CHEMICAL RETORTING IN OIL SHALE IN SITU HORIZONTAL WELL

机译:水平井油页岩的压裂和化学蒸馏萃取页岩油气的方法和过程

摘要

A method for shale oil and gas extraction by fracturing and chemical retorting in an oil shale in situ horizontal well. An inclined well is drilled from the ground to the upper part of an underground oil shale stratum, and a horizontal well is drilled in parallel to the oil shale stratum in the upper part of the oil shale stratum. Behind the horizontal well and the inclined well in the upper part, an inclined well leading to the lower part of the oil shale stratum is drilled, and a horizontal well is drilled in parallel to the lower part of the oil shale stratum. Highly pressurized media (air, water, and quartz sand) are injected into the horizontal well in the upper part of the oil shale stratum, cracks of 1 to 3 mm are fractured in the oil shale stratum with the horizontal well in the upper part of the oil shale stratum serving as the center and are filled with a gap filler, and, an oil and gas channel connecting the horizontal well in the lower part is established. A heating apparatus is added into the horizontal well in the upper part of the oil shale stratum, the oil shale stratum is heated to 550 °C, the oil shale is initially retorted, shale oil and gas are extracted, and the shale oil and gas are led out of the ground from the horizontal well in the lower part via the oil and gas channel, and then are introduced to an oxidizer for oxidization reaction with asphaltenes and fixed carbon contained in the oil shale when retorted, where the heat generated is used as a heat source for subsequent retorting, thus implementing underground in situ shale oil extraction. The shale oil that is led out of the ground is separated via a ground-level gas-liquid separation apparatus, and the separated shale oil is transferred to a product oil tank for storage and sale, while a combustible gas is transferred to a combustible gas power generation apparatus for use in power generation. This solves the worldwide problem that existing ground-level retorting has in terms of great costs, difficult treatment of tailings, a variety of environmental issues, and large land-use footprint. In addition, disclosed are a process implementing the method and a nozzle used in the method.
机译:一种通过油井原位水平井的压裂和化学蒸馏提取页岩油气的方法。从地面到地下油页岩层的上部钻一个斜井,并在油页岩层的上部平行于油页岩层钻一个水平井。在水平井和上部的斜井的后面,钻到通向油页岩地层下部的倾斜井,并平行于油页岩地层的下部钻水平井。将高压介质(空气,水和石英砂)注入到油页岩地层上部的水平井中,在油页岩地层的上部水平井中裂开1至3 mm的裂缝。油页岩地层为中心,并填充有缝隙填充剂,并在下部建立了与水平井连接的油气通道。在油页岩地层上部的水平井中加装加热装置,将油页岩地层加热至550℃,初步蒸干油页岩,抽出页岩油和气,页岩油和气从下部水平油气井通过油气通道从地下引出地面,然后引入到氧化炉中,经蒸馏后与油页岩中的沥青质和固定碳进行氧化反应,利用产生的热量作为后续蒸馏的热源,从而实现了地下原位页岩油的开采。从地面引出的页岩油通过地面气液分离装置进行分离,分离出的页岩油被转移到成品油罐中进行存储和销售,而可燃气体则转移到可燃气体中。用于发电的发电装置。这解决了现有的地面干馏在成本高昂,尾矿处理困难,各种环境问题以及大量土地使用方面都存在的全球性问题。另外,公开了实现该方法的方法和该方法中使用的喷嘴。

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