气田水平井完井方式评价与优选

建立了一套气井水平井完井方式优选的规范程序。首先对各种水平井完井方式的适应性进行了归纳,建立了完井方式适应条件知识库;根据气藏的地质特征、生产方式等特点进行水平井井壁稳定性分析和出砂风险评估;利用综合模糊评判方法进行完井方式技术适应性评价;对各种完井方式进行表皮系数分析和产能比评价;最后综合考虑技术适应性指标和产能比指标得出最佳的完井方式。实例应用结果表明所建立的评价优选方法是合理可行的。

Evaluation and Selection of Horizontal Gas Well Completion Methods

A preferred approach to select the best horizontal well completion method was established.The following are the main steps： First,sum up the adaptabilities of every horizontal well completion methods,then construct a knowledge base;second,on the basis of reservoir character and production,evaluate the bore hole stability and sanding probability;third,evaluate the technique adaptability with fuzzy evaluation method;forth,analyze the skin factor and productivity ratio at different completion methods;finally,consider the technique adaptability and productivity ratio to select the best well completion method.The applied results show that this evaluation and selection method is reasonable and practicable.