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Thermally Induced Wettability Alteration To Improve Oil Recovery In Fractured Reservoirs

机译:热诱导润湿性改变以改善裂缝性油藏中的油采收率

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摘要

Many naturally fractured reservoirs are oil-wet; during water injection, water will not imbibe into the matrix but will flow preferentially through the fractures, resulting in very low oil recoveries. For instance, the Ghaba North field in Oman is an extensively fractured, oil-wet carbonate that ahs achieved only 2/100 recovery after more than 20 years of production. Experiments on core form fields in Oman and elsewhere have Indicated that the rock will undergo a transition from oil-wet to Water-wet as the temperature increases.
机译:许多自然裂缝的油藏都是油湿的。在注水过程中,水不会吸收到基体中,而是会优先流过裂缝,导致采油率非常低。例如,阿曼的Ghaba North油田是一个广泛裂缝的油湿碳酸盐,经过20多年的开采,仅获得2/100的采收率。在阿曼及其他地区进行的岩心形态实验表明,随着温度的升高,岩石将从油湿向水湿过渡。

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