泡沫欠平衡钻井液在中生界地层的应用

Advances in Fine Petrochemicals(2009)

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Abstract
中生界古潜山构造的生油层属于裂缝性油气藏,在开发时常发生漏失。针对此条件,采用抗高温可循环泡沫钻井液实施欠平衡钻井。本研究所用可循环泡沫钻井液具有密度低、有利于保护油气层、防止漏失的特点,其密度在0.85~1.00 g/cm~3可调、抗温达135℃且具较好抗盐性。该钻井液在中原油田户部寨区块成功地进行了应用,较好地解决了中生界油藏开采过程中存在的井漏、坍塌、高温等复杂问题。
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Key words
mesozoic,temperature resistance and salt tolerance,circulating foam drilling fluid,underbalanced driling technology
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