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子北油田黄家川1068区块初期依靠地层能量开采,产量递减较快。本文对研究区开发初期的油井自然能量的动态分析,储层的润湿性评价、岩心驱油试验和敏感性评价,以及注入水与地层水的配伍性评价进行了分析,研究结果表明:子北油田1068注水区块中长61储层呈现出较弱酸敏性、较弱碱敏性、无水敏性、中等盐敏性、中等偏弱速敏性,并具有亲水的特征。因此,采用注水开采是行之有效的方案,而且在注水开采时可以忽略速敏、酸敏和碱敏对储层的影响,但是当地层水与注入水配伍性较差时需考虑盐敏的影响。
Huangjiachuan 1068 sub-North Oilfield early rely on stratigraphic energy recovery, production decline rapidly. In this paper, the dynamic analysis of the natural energy of oil well, the evaluation of reservoir wettability, core oil displacement test and sensitivity evaluation, and the evaluation of compatibility of injected water and formation water are carried out in the initial stage of development of the study area. The results show that: In the 1068 waterflooding block of the North Oilfield, the Chang 61 reservoir shows weak acid sensitivity, weak alkali sensitivity, no water sensitivity, moderate salt sensitivity, moderate weakness, and is hydrophilic. Therefore, the use of water injection is an effective solution, and can be ignored in the water injection of the quick-sensitive, acid-sensitive and alkali-sensitive reservoir, but when the formation water and injection of water is poor when the need to consider the impact of salt sensitivity .