压裂水平井连续油管井温法裂缝诊断技术与现场应用

Tech of Crack Diagnose by Temperature with Continuous Tubing in Fractured Horizontal Well and Its Application

针对水平井人工裂缝识别方法较少且实施困难的现状,提出应用连续油管携带存储式压力井温仪进行压前、压后井温测试的方法进行水平井人工裂缝识别。该工艺现场实施简单,可操作性强,可以识别沿水平井筒方向人工裂缝形成条数和相对改造效果、人工裂缝开启的位置和多段合压时各段改造程度等,可以有效指导压裂设计和施工。现场利用该工艺进行了3井次测试,取得较好效果。

To fact of method for discerning crack is less and conduction of it is difficult, that of applying continuous tube to carry memory temperature and pressure tool to test temperature at time of postfrac and frefrac to distinguish. The produced numbers of manmade crack along horizontal direction, corresponding reformed effect, opening position of manmade crack and reformed degree of every section when integrating pressured for many sections can be discerned which guides fracturing design and operation effectively. Application in 3 wells show that whose effect is perfect.