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DOWNHOLE DIFFERENTIATION OF LIGHT OIL AND OIL-BASED FILTRATES BY NMR WITH OLEOPHILIC NANOPARTICLES.
DOWNHOLE DIFFERENTIATION OF LIGHT OIL AND OIL-BASED FILTRATES BY NMR WITH OLEOPHILIC NANOPARTICLES.
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机译:用亲油性纳米粒子通过NMR进行轻质油和基于油的滤液的井下区分。
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摘要
Downhole nuclear magnetic resonance (NMR) methods that utilize oleophilic nanoparticle may allow for differentiation of light oil and oil-based filtrates. For example, a method may involve drilling a wellbore penetrating a subterranean formation using an oil-based drilling fluid that comprises an oil base fluid and a plurality of oleophilic nanoparticles; performing a plurality of NMR measurements at a plurality of depths of investigation (DOI) of a near-wellbore portion of the subterranean formation; and producing an invasion profile of an oil-based drilling fluid filtrate into the near-wellbore portion of the subterranean formation based on the plurality of NMR measurements.
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