沈84-安12块高凝油注水开发后期原油变化特征

发布时间：2018-05-21 06:50

  本文选题：沈-安块 + 高凝油　； 参考：《特种油气藏》2017年04期

【摘要】：沈84-安12块为辽河油区典型的高凝油注水开发区块,为了系统掌握长期注水开发对高凝油性质变化的影响,采用流变仪、差示扫描量热仪(DSC)、气相色谱仪等分析技术对该区块高凝油开展了析蜡点、熔蜡点、流变性、含蜡量及族组成等方面的系统分析,并利用沈检5井的岩心抽提物进行原油流变性及析蜡点研究。结果表明:该区块高凝油含蜡量为31.73%~39.59%,凝固点为46~50℃,析蜡点为51.60~68.60℃(平均为65.65℃),比开发初期高6.60℃以上;结合取心井中原油析蜡点可知,该区块地层原油析蜡点为70.00℃,已逐渐接近油藏温度,建议采取注热源或其他降低析蜡温度的措施来避免油层的冷伤害。该项研究为高凝油油藏后期注水开发方式调整提供了技术指导。
[Abstract]:Shen-84-An12 block is a typical high-condensable oil injection development block in Liaohe oil area. In order to systematically understand the influence of long-term water injection development on the change of high condensable oil properties, rheometer is used. Differential scanning calorimeter (DSC), gas chromatograph (GC) and other analytical techniques have been used to systematically analyze the wax evolution point, wax melting point, rheology, wax content and group composition of high condensable oil in this block. The rheological properties and waxing point of crude oil were studied by using the core extracts from well Shenqian 5. The results show that the wax content of high pour point oil in this block is 31.73 ~ 39.59, the freezing point is 46 ~ 50 鈩，

本文编号：1918182