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首页> 外文会议>Workshop on Geothermal Reservoir Engineering >Design Considerations for Applying Multi-Zonal Isolation Techniques in Horizontal Wells in a Geothermal Setting
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Design Considerations for Applying Multi-Zonal Isolation Techniques in Horizontal Wells in a Geothermal Setting

机译：在地热井中应用多地井的多地隔离技术的设计考虑因素

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The petroleum industry has had considerable success in recent decades in developing unconventional shale plays using horizontal drilling and multi-zonal isolation and stimulation techniques to fracture tight formations to enable the commercial production of oil and gas. Similar well completions could be used in Enhanced Geothermal Systems (EGS) to create multiple fractures from horizontal wells. However, the technologies and techniques from the petroleum industry would have to be adapted to accommodate the higher temperatures, high water production injection and flow rates, and large-diameter completions encountered in geothermal settings. This study assesses whether well completion techniques used in the unconventional shale industry to create multi-stage fractures can be applied to an enhanced geothermal system, with a focus on the completion of the EGS injection well. Several zonal isolation systems commonly used in the shale gas industry, such as "plug and perf" and "port and packer" systems, were evaluated. A review of technologies used in these systems was performed to determine if commercially available equipment from the petroleum industry could be used at the temperatures, pressures, and sizes encountered in geothermal settings. The study found no major technical barriers to employing shale gas multi-zonal completion techniques in a horizontal well in a geothermal setting for EGS development.
机译：近几十年来发展石油工业取得了相当大的成功，在利用水平钻井和多地隔离和刺激技术来破坏紧密地层，以实现石油和天然气的商业生产，近几十年来开发非传统页岩竞争。类似的井完井可以用于增强的地热系统（EGS）中，从水平井中产生多个裂缝。然而，石油工业的技术和技术必须适用于适应较高的温度，高水产注射和流速，以及在地热环境中遇到的大直径完成。本研究评估了在不传达的页岩行业中使用的井完井技术是否可以应用于增强的地热系统，专注于EGS注入井的完成。评估了页岩气体工业中常用的若干区域隔离系统，例如“插头和完善”和“港口和包装机”系统。进行了对这些系统中使用的技术的综述，以确定石油工业的市售设备是否可以在地热环境中遇到的温度，压力和尺寸处使用。该研究发现，在地热井中在水平井中采用页岩气多地完井技术的主要技术障碍在egoherma的情况下，可以进行EGS开发。

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