| DF1井氮气泡沫欠平衡钻井实践与认识 |
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| 引用本文： | 俞宪生.DF1井氮气泡沫欠平衡钻井实践与认识[J].探矿工程,2009,36(1):14-17. |
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| 作者姓名： | 俞宪生 |
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| 作者单位： | 中石化华北分公司工程监督中心,河南郑州450006 |
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| 摘 要： | 氮气加泡沫欠平衡钻井是当前国际上已经成熟的一种钻井新技术。其优点是静液柱压力低，漏失量小，携屑能力强，对油气层损害小，保证水敏性地层钻井安全；可及时发现油气层，提高单井产量；因而能够最大限度地发现和保护中、低压低渗油气藏，以获取比常规过压钻井高得多的经济效益。在大牛地气田DF1井的施工应用中，针对本工区低压、低渗、水敏的特点，使用该项技术，很好地解决了工区内使用普通泥浆造成对产层污染的问题，并取得了成功。
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| 关 键 词： | DF1井 氮气泡沫 欠平衡钻井 负压控制 定向钻进 |
| 收稿时间： | 2008/6/24 0:00:00 |
Practice and Experience on Under-balanced Drilling with Nitrogen-foam |
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| YU Xian-sheng.Practice and Experience on Under-balanced Drilling with Nitrogen-foam[J].Exploration Engineering(Drilling & Tunneling),2009,36(1):14-17. |
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| Authors: | YU Xian-sheng |
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| Institution: | YU Xian-sheng (Engineering Supervision Center of North China Branch Company, SINOPEC, Zhengzhou Henan 450006, China) |
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| Abstract: | Under-balanced drilling with nitrogen-foam is an international mature technology with advantages of low pressure of hydrostatic, less leakage, strong cutting carrying capacity, less damage to oil-gas layer and safe drilling in water-sensitive layer. With this technology, low pressure and low permeability oil-gas reservoir can be discovered and protected furthest for much higher economic benefit than conventional over-pressure well. It was applied in DF1 Well of Danudi gas field of low pressure and water-sensitive layer, and pollution on producing formation by ordinary slurry was solved. |
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| Keywords: | DF1 Well nitrogen-foam under-balanced drilling negative-pressure control directional drilling |
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