摘要
油气井压裂酸化后要获得好的增产效果,首先要选取最适合进行增产措施改造的井。传统的选井方法主要依靠经验或生产需求来选择施工井层,具有一定的主观性、盲目性和风险性。影响一口井压裂酸化效果的因素包括地质静态、开发动态及压裂施工等多方面因素,从理论上讲,各因素在不同的层次上对压裂酸化效果起着不同的作用,且各影响因素本身具有模糊性,这些因素很难用常规方法量化研究。文章应用现代数学手段:模糊数学和系统工程层次分析原理,综合考虑影响选井选层因素的复杂性和不均衡性,将各因素按其在不同层次上对事物的影响程度分类,然后确定各因素最终的权重,形成了一种压裂酸化选井选层的模糊分析方法。应用所研究的方法对某气田的6口井进行了实例计算,优选出了最适合压裂措施的井。实例计算表明该方法计算结果正确,符合现场施工实际;计算简单、方便,具有一定的现场实用价值。
The factors affecting the fracture acidizing results of a well include geological conditions, development performance and fracturing servoice, etc., each having various effects on the fracture acidizing results in different hierachies theoretically. These factors themselves are of fuzziness, so that it is difficult to study quantitatively them by the conventional methods. In the paper, by applying fuzzy mathematics and the hierachy analysis principle of system engineering, and in comprehansive consideration of the complexity and non-equilibrium of the factors affecting well-selection and horizon-selection, these factors are classified according to their various effects on things in different hierachies and the final weight of each of them is then determined, thus obtaining a fuzzy analysis method used for optimizing well and horizon for fracture acidizing. Through the case study of six wells in one gas field, the well being most suitable for carrying out fracturing was optimized and it was shown that the calculation results are correct, being accordant to the actual situation, therefore such a method is of a certain value of being applied to field, being simple and convenient to be used.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第2期84-86,共3页
Natural Gas Industry
基金
四川省重点实验室基金项目(省室基金015)
