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火山岩储层是近年发现的一类重要特殊类型储层。针对东北SN火山岩气藏储层敏感性进行了系统的实验评价。通过RXD进行全岩分析粘土矿物含量分析,岩石以斜长石和石英为主,方解石在局部有较多分布,钾长石、赤铁矿和白云石较少。单井粘土矿物绝对含量达6.6%～27%,平均达15%;粘土矿物类型复杂、差异大,以绿泥石、伊利石为主,高岭石和伊/蒙混层有一定分布。按石油天然气行业标准进行室内敏感性实验结果表明:工区储层无速敏、水敏性中等偏强、临界盐度20000mg/L、碱敏中等偏强、土酸敏感性中等偏强—极强。为该区火山岩储层保护措施提供了依据。
Volcanic reservoirs are an important type of reservoir that has been discovered in recent years. A systematic experimental evaluation of reservoir sensitivity of SN volcanic gas reservoirs in Northeast China was carried out. Whole rock analysis by RXD Clay mineral content analysis, mainly plagioclase and quartz rock, calcite in the local distribution, potassium feldspar, hematite and dolomite less. The absolute content of single-well clay minerals reaches 6.6% -27% with an average of 15%. The types of clay minerals are complex and vary greatly, mainly chlorites and illites, with some distribution of kaolinite and Iraq / smells. According to the oil and gas industry standards for indoor sensitivity experiments showed that: the reservoir area is no speed sensitive, moderate water sensitivity, critical salinity 20000mg / L, moderate to moderate alkali sensitivity, moderate to moderate soil acid sensitivity - very strong . It provides the basis for volcanic reservoir protection measures in this area.