准噶尔盆地石南31井区清水河组油气水层分布规律

摘要

针对石南31井区储层岩性多变、油气水关系复杂等问题,按不同岩性识别油气层、水层和干层,据油气不同测井响应特征进一步识别油层和气层.将储层划分为细砂岩、中粗砂岩和砂砾岩3类,识别储层流体性质,分析油藏分布特征,指出油层、隔夹层平面分布特征,探讨油气水层分布规律.结果表明,石南31井区主要有4个油藏.储层所含流体有油、水和气,中北部细砂岩储层为纯油层,南部中粗砂岩储层为水层.气层从南到北分布于全区,主要位于油藏北部和东部局部区域,为今后解释工作具很好指导意义.%Aiming at the problem of Changeable reservoir lithology,Oil and gas complex relationship between water,First to distinguish the oil and gas zones, the water zones according to the different lithological characters; Further distinguish the oil zones and the gas zones again according to the oil gas different log response characteristic. Divides the reservoir into the novaculite, the grit and the granulated substance conglomerate three kind of lithological characters distinguishes the reservoir fluid nature. Based on this, to analyze the oil deposit distribution characteristic, to point out the oil layer, separatethed band plane distribution characteristic, to discuss the oil gas water level distributed rule. The results indicate that the Shinan 31 wellblock mainly have four oil deposits. The reservoir contains the fluid to have the oil, the water and to be also gas, mid-north's novaculite reservoir is the pure oil zones; but south the grit reservoir is a water zones. The gas zones have the distribution from south to north in the entire district, mainly located at the oil deposit north and eastern part the local region, This will have the very good guiding sense to present's explanation work.