科尔沁油田交2块储集层敏感性试验研究

方法 通过Ｘ－衍射，电镜扫描和电子探针能谱等方法，分析了科尔沁油田交２块储层的敏感性及造成储层敏感性的原因，确定了该油田的粘土矿物含量及其分布。目的 为油田注水开发提供依据。结果 科尔沁油田交２块储集层中粘土含量较高，粘土矿物类型较多，根据速敏流动试验认为，该储层对速度不敏感，但具有水敏性和盐敏性，因此在注水开发时，不宜淡水注入，其矿化度不应低于２０００ｍｇ／Ｌ，结论 造成科尔沁油田交２断块储层敏

Experimental study of reservoir sensitivity in block Jiao 2 of Horqin oil field

Method Using X-ray diffraction, electron microscope scanning and electronic probe spectrum, reservoir sensitivity of block Jiao 2 in Horqin oil field and its contributing factor were analyzed, clay mineral content and distribution in this oil field were determined. Purpose To provied basis for water injection development of the oil field. Result Clay content in reservoirs of block Jiao 2 in Horqin oil field is high, and the clay minerals are various in type; velocity sensitivity experiment showed that this reservoir was not sensible with velocity, but had characteristics of water sensitivity and salt sensitivity, so that during water injection development, fresh water would not be available, the salinity should not lower than 2 000 mg/L. Conclusion High content of clay mineral was the essential reason causing reservoir sensitivity in block Jiao 2 of Horqin oil field; acid treatment may be used as one of the stimulation measures of production wells in this reservoir.