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一种新型活动式井下节流器

China Petroleum Machinery(2010)

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Abstract
为了解决老式节流器在使用中存在的打捞困难及密封皮碗与油管之间的摩擦问题,同时大幅度降低节流器打捞时的上提力,研制了新型活动式井下节流器。该节流器主要由滤砂管、外套管、密封皮碗、卡瓦、剪切销钉和投送接头等组成,保留了老式节流器定位准确、密封良好、耐压差高的优点,同时也克服了老式节流器打捞难的缺点。苏里格苏75区块10口井的应用表明,与同类产品相比,该节流器打捞性能及节流降压效果均更好,值得大面积推广应用。
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Key words
choke,unfreezing,gas well,fishing operation
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