论文部分内容阅读
开展冀东油田模拟注水驱油实验,以稳态法测定油-水相对渗透率,制备饱和油,低、中、高含水及残余油的不同产水率的岩样,按物性条件分为一、二类储层,对岩样进行岩石热解、饱和烃气相色谱及荧光显微图像分析。一类储层随着含水上升,饱和烃气相色谱峰值逐渐降低,峰型从正态峰型向扁平型变化;二类储层与一类储层峰型变化类似,只是降低幅度不同。总体上两类储层热解含油气总量均随含水上升呈降低趋势,一类储层降低的幅度差大于二类储层,特低孔特低渗储层变化不大。两类储层随着产水率的上升,反映岩石含油丰度的参数饱和烃总面积、Pg值总体上均从未水洗的饱和油到残余油有规律地下降,证明地化参数可以反映产水率的变化。水驱油不同产水率的荧光显微图像特征,证明该技术能够对油层的不同水洗程度进行判别。下一步将根据冀东油田水驱油实验分析资料,利用投产井及密闭取心井分析资料建立解释标准及图版,对开发区块新钻调整井进行解释。
To carry out simulated flooding experiments in Jidong Oilfield, steady-state method was used to determine the relative permeability of oil-water to prepare rock samples with different water-producing rates of saturated oil, low, middle and high water-cut and residual oil. According to the physical conditions, , Two kinds of reservoirs, rock pyrolysis of rock samples, saturated hydrocarbon gas chromatography and fluorescence microscopy image analysis. With the increase of water cut in a kind of reservoir, the peak of gas chromatogram of saturated hydrocarbon gradually decreases and the peak shape changes from normal peak to flat type. The change of peak shape of a kind of reservoir is similar to that of a kind of reservoir except that the decreasing amplitude is different. Generally speaking, the total amount of pyrolysis oil and gas in both types of reservoirs decreases with the rise of water cut. The difference between the first class of reservoirs is larger than that of the second type and the lowest is the lowest. With the increase of water production rate, the two types of reservoir reflect the total area of saturated hydrocarbon, the Pg value generally decreases from the unwashed saturated oil to the residual oil, which proves that the geochemical parameters can reflect the production Changes in water rate. Fluorescence microscopic image characteristics of water flooding with different water production rates show that this technology can discriminate the different degrees of water washing. The next step will be based on the Jidong Oilfield water flooding experimental analysis of the data, the use of wells and closed coring well analysis of data to establish the interpretation of standards and charts, the development block new drilling adjustment wells to explain.