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1995年中国石油天然气总公司发布的《砂岩储层敏感性评价试验方法的行业标准》,不能完全满足对砂岩储层敏感性评价的需要。针对标准存在的问题 ,主要以水敏、速敏、盐敏和酸敏评价试验为研究内容 ,确定了含油岩样的敏感性试验方法 ;研究了含油与不含油岩样的敏感性 ,得出不含油岩样的敏感性比含油岩样的强 ;研究了盐度梯度大小对盐敏试验结果的影响 ,盐度梯度越大 ,临界矿化度越高 ,盐敏性伤害越严重 ;讨论了速敏性评价标准的不合理性 ,并提出了修改意见。
The “Industry Standard for Sandstone Reservoir Sensitivity Evaluation Test Method” promulgated by China National Petroleum Corporation in 1995 can not fully meet the needs of the sensitivity evaluation of sandstone reservoirs. In view of the problems existing in the standard, the sensitivity test of oil-bearing rock samples was determined mainly based on water-sensitive, speed sensitive, salt-sensitive and acid-sensitive evaluation tests. The sensitivity of oil-bearing and non-oil- The sensitivity of oil-bearing rock samples is stronger than that of oil-bearing rock samples. The effects of salinity gradient on salt-sensitive test results are studied. The salinity gradient is larger and the critical salinity is higher and salt-sensitive damage is more serious. Sensitivity evaluation criteria of the unreasonable, and proposed amendments.