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首页> 外文会议>Geothermal Resources Council Annual Meeting >Improved Efficiency of Solid Trap in Brine Injection Pipeline of Tongonan Geothermal Field, Leyte, Philippines
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Improved Efficiency of Solid Trap in Brine Injection Pipeline of Tongonan Geothermal Field, Leyte, Philippines

机译：高昂南地热场，菲律宾盐水注射管道固体陷阱效率提高

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摘要

The existing 20" single pipeline solid traps installed in Tongonan and in most geothermal fields in the Philippines are ineffective in capturing minute solids carried by the brine, resulting to capacity decline in injection wellbores. Installation of a modified and enlarged solid trap consisting of 36" parallel pipeline was completed last January 2003. The minute solids that go with the brine are removed by significantly reducing the velocity in the enlarged solid trap allowing the solids to settle first in the solid trap. When it was opened and evaluated in June 2003 after 167 days of utilization, the solids collected at the modified solid trap were composed of polymerized silica (50percent), corrosion products (40percent) consisting of magnetite and hematite, and formation materials (10percent). The total weight of solids collected was 3,445 kgs. for an estimated deposition rate of 21 kgs/day. Iron catalyzed or enhanced polymerization of silica also likely occurred in the brine enriched with magnetite, which induced polymeric silica formation as evidenced from the debris collected. This will become a major factor in the decline in injection capacity. Removing the bulk of the solids from the brine before it is injected would greatly reduce its potential to polymerize and minimize the decline in the injection capacity of the well. The documentation and evaluation showed that the modified solid trap was successful in attaining its objective.
机译：安装在通尼南的现有20“单管道实心陷阱和菲律宾大多数地热领域在捕获盐水捕获的微小固体中无效，导致注入井筒的产能下降。安装由36”的改进和放大的固体陷阱。并行管道于2003年1月完成。通过显着降低允许固体在固体阱中首先沉降的速度下的速度来除去与盐水一起使用的微小固体。在2003年6月在利用167天开放和评估时，在改性固体阱中收集的固体由聚合的二氧化硅（50％），由磁铁矿和赤铁矿组成的腐蚀产物（40°）组成，以及形成材料（10％）。收集的固体总重量为3,445千克。估计沉积率为21千克/天。二氧化硅的铁催化或增强的聚合也可能发生在富含磁铁矿的盐水中，这诱导聚合物二氧化硅形成，从收集的碎屑中证明。这将成为注射能力下降的主要因素。在注射之前从盐水中取出大部分固体将大大降低其聚合和最小化井的喷射能力下降的潜力。文献和评估表明，改良的固体陷阱成功地实现了其目标。

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