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以地质研究为核心技术,在深入分析局部构造、沉积相关系和井组内的注采关系的基础上,提出油井及其井组的剩余油丰度与产层储层结构的配置关系是实施微生物单井吞吐技术增油的重要条件,建立了以井组为地质单元的微生物单井吞吐选井方法。该方法包括3个分析步骤,首先是基础地质参数研究,通过分析试油与测井解释成果,寻找有利于实施微生物单井吞吐技术的目标区;其次是目标区的井组地质特征研究,以地层对比分析为依托,寻找井组内剩余油丰度相对较高的局部小正向构造、次要沉积相分布区和储层结构均匀且无高渗层的注采关系;第三是井组地质模型的匹配关系研究,优选其中的最佳匹配关系。利用该选井方法,在大港油田施工油井14口,9口井获得明显增油效果,成功率64·4%。
Based on the geology research as the core technology, the relationship between the local structure, sedimentary facies and the injection-production relationship within the well group is analyzed. It is proposed that the relationship between the remaining oil abundance of the well and its well group and the reservoir structure of the pay zone is implemented Microbiological single-well huff and puff technology to increase the important conditions of oil, the establishment of a well group of geologic units of micro-organisms single-well Hunting method. The method includes three steps of analysis, the first is the study of basic geological parameters, and the second is the study of the geological characteristics of the well group in the target area by analyzing the results of the test oil and well logging interpretation to find the target area that is conducive to the implementation of single- Strata correlation analysis as the basis, looking for a relatively small residual oil abundance in the well group of local small positive tectonics, secondary sedimentary facies distribution and uniform reservoir structure and high permeability layer injection relationship; the third is the well group Geological model of the matching relationship between the study, the best one of the best match. With this well selection method, 14 oil wells were constructed in Dagang Oilfield, and 9 oil wells were well enhanced with a success rate of 64.4%.