【作者】 张敏；

【导师】 厉子龙； 刘江；

【作者基本信息】 浙江大学 ， 地质学， 2009， 硕士

【摘要】 与勘探阶段的静态环境相比,注水开发方式下油藏及储层特征都处于动态变化中,已开发油田测井解释及评价过程中暴露出一系列问题,本研究针对这些问题,在实验结论及理论研究的基础上,对实际高含水开发区块进行测井评价,通过理论与实际相结合,完善注水开发油田中新完钻井的测井评价方法,提高开发区块的测井解释符合率。研究结果表明：电阻增大率与含水饱和度的关系发生变化,当含水饱和度达到一定值以后,储层中的水成为连续流动相,此后电阻率对油水饱和度的变化不再敏感.地层水矿化度不同,饱和度解释模型中参数的特征不同,在矿化度较低的情况下岩电参数随矿化度的降低而减小,在高矿化度情况下基本不发生变化。水驱过程中形成的大孔道及其它高渗透条带对储层电阻率产生影响,虽然储层中的剩余油饱和度还较高,但是低阻的含水条带却会导致电阻率显著降低。流动电位是与注水开发过程密切相关的一种岩石物理现象,其产生的本质原因是开发过程中的压力异常,流动电位使自然电位曲线表现异常。更多还原

【Abstract】 For the problems of reservoir properties evaluation and well logging interpretation during the oilfield development, relationship between log information and characteristics of reservoir was studied in detail through theory analysis and petrophysical experiments. In the process of water flooding, relationships between water saturation and resistivity index are different. When the water saturation increases to a critical value, water in reservoir becomes continous phase state and resistivity curve can’t reflect water saturation. If water salinities of reservoir are different, parameter characteristics of saturation models are different. When the water salinities are high enough, saturation parameters maintain steady, do not change obviously with saline solution. Large pores widely spread in water flooding oilfield, which make the resistivity of the pay zone decrease obviously, though the oil saturation is still large enough. Electrokinetic phenomenon is related with oil field development. Abnormal pressure caused by development is the main factors. SP curve were the expressions of the streaming potential in waterflooded zone.更多还原