Sidewell Coring Geo-logging Evaluation Technique And Its Application Of Putaohua Oil Layer Of Xujiaweizi In Daqing Oil Field

With the deepening of oilfield development work, the deep study of development objects is more and more complicated, such as the Putaohua oil layer of Xujiaweizi in Daqing oilfield, most reservoirs have thin or poor layers that contain a lot of mud or calcium. Moreover, it has active hydrodynamic and complicated relationship between oil and water in this area. The explanation of reservoir is very hard. In order to achieve precise evaluation of the reservior and provide better service for oilfield development, it is necessary to set up the perfect and adaptive explanation standard by using each geo-logging technology and combining reservior characteristics.For development well, sidewall coring is the way of geo-logging. By analyzing the sample, summarizing the regularity and combining logging data, we set up the evaluation method of light hydrocarbon, gas chromatography and micro-pictures of fluorescence.By using the data of gas chromatography, we set up gas chromatography quantitative interpretation chart. By analyzing sample in pyrolysis, we gain quantitative evaluation parameters.Using these parameters and combining logging data, we set up quantitative oil water layer interpretation chart and production capability evaluation chart. The rate of interpretation accuracy of this achievement raises 9.4 percentage through a year application. It fits the demand of development completely. This reserch achievement can judge the fluid property and evaluate the productivity of reservior much accurately, and it can also provide important basis to formulate reasonable development project.