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察尔汗盐湖的岩盐层的渗透性主要受岩盐的粒径、孔隙度、不均质系数盐卤水理化性质等因素影响。采用实验室研究的手段并参考野外抽水试验的结果提出了一些计算渗透性系数的公式、并对其分布作出预测。 相似文献
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基于数理和地层控制等基础理论,对岩盐水溶开采中,岩盐溶爱覆岩的移动规律进行了研究,得到了岩盐溶胶顶板岩层中任一点处于沉表达式及溶胶中点不同深度处置岩的沉降及变形公式。 相似文献
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宜宾市岩盐资源开发利用现状及发展建议 总被引:1,自引:0,他引:1
综述了宜宾市岩盐资源开发利用现状与中国盐化工产业现状。分析了宜宾岩盐开采及中国盐化工产业中存在的问题,即存在岩盐地质勘查程度低、开采技术不成熟、盐化工产品结构单一等问题。针对以上问题提出了岩盐资源开发利用发展建议,即要统筹规划和管理岩盐资源、延伸盐化工产业链、加强技术攻关提高技术水平等。并展望了岩盐开发利用的发展前景。 相似文献
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浅析水溶开采对衡阳地区地表沉降的影响张治平(湖南化学工业设计院)衡阳地区地下岩盐资源十分丰富。目前,在该地区进行开采的有湘衡盐矿、衡阳卤水矿和正在建设的衡阳2万t/a烧碱厂。随着岩盐矿资源的强化开采,对地表沉降,地面建、构筑物的破坏,将越来越被人01... 相似文献
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本文以地下储气库盐岩单轴蠕变试验为例,对盐岩的蠕变特性进行了分析,建立了盐岩的蠕变模型;通过最小二乘法原理回归得出了盐岩蠕变模型中的各个参数。利用该模型对地下天然气储气库进行了数值计算分析,结果表明模型可以很好的反映盐岩的蠕变规律且可用来预测盐岩天然气储气库的长期稳定性。 相似文献
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在油气田的勘探开发过程中,只有减少对油气层的损害,才有可能获取更大的综合经济效益。油气层损害是指在油气井钻井、完井、增产措施施工中,各种工作液在井周附近储层中造成的减少油气层产能的现象。而维持储层产能的重要条件是岩石的渗透性,渗透率越高,流体导流能力越高,储层产能越高。因此,保护油气层的核心问题就是如何保持储层的渗透率。川东北陆相气藏埋藏深,储层类型复杂,泥质含量高,勘探作业施工过程中的入井液体与地层流体不配伍,易引起水敏、盐敏、压敏等现象。文中对试气作业施工可能造成储层损害的因素及采取的相应保护措施进行了详细分析,目的在于提高陆相气藏储层保护水平,确保气藏产能得以彻底解放。 相似文献
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In this article the use of the direct osmosis test as a complementary experiment to the reverse osmosis test is described. The membranes investigated are cellulose acetate membranes reinforced with mineral fillers. In both tests the same influence of the type of fillers on the water permeability coefficients is found. The salt permeability coefficients indicate the presence of pressure sensitive defects in the reinforced membranes. The direct osmosis test is found to be a suitable test to confirm and predict the membrane properties under reverse osmosis conditions. 相似文献
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Nitika Kalia 《Chemical engineering science》2009,64(2):376-390
The influence of medium heterogeneities on wormhole formation in carbonates is studied using a two-scale continuum model. The model describes the coupling between the transport and reaction processes occurring at the pore and Darcy scales. The medium heterogeneity is represented through initial porosity (or permeability) field by introducing a randomly generated normal distribution of local porosity values. Heterogeneity in the rock is characterized by the magnitude of maximum variation in local porosity value from the average porosity and by the length scale over which this variation occurs. It is found that heterogeneity in a rock affects not only the structure of the patterns formed during reactive dissolution but also the amount of acid required to achieve a given increase in permeability. The volume of acid required decreases as the heterogeneity magnitude or length scale are increased and this is particularly noticeable at high injection rates of acid. At intermediate injection rates, the required acid volume decreases gradually and an optimum value in heterogeneity magnitude may exist. This has been attributed to excessive branching in a pattern when the medium becomes extremely heterogeneous. In addition, the amount of acid required to breakthrough is found to depend on the initial rock porosity and dimensions of the rock being acidized. Finally, a novel way to characterize heterogeneity is defined, where heterogeneity at the core-scale is expressed using a heterogeneity parameter, ? as a product of the heterogeneity magnitude and length scale, and is validated for a given rock type at different injection conditions. 相似文献