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DF1井氮气泡沫欠平衡钻井实践与认识
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Practice and Experience on Under-balanced Drilling with Nitrogen-foam
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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。

    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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俞宪生. DF1井氮气泡沫欠平衡钻井实践与认识[J].钻探工程,2009,36(1):14-17.
YU Xian-sheng. Practice and Experience on Under-balanced Drilling with Nitrogen-foam[J]. Drilling Engineering, 2009,36(1):14-17.

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  • 收稿日期:2008-06-24
  • 出版日期: 2009-01-25
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