两参数井温仪在压裂测试中的应用

Practice of Borehole Thermometer with Two Parameters in Oil-Well Test

测试油井压裂作业前后的地层温度变化,是间接评价压裂效果的重要方法。油井温度测试,方法简便,成本低廉,但压裂后的井温测试要注意测试时间的选择和仪器下井速度和过程的控制。根据132井次的测试结果分析发现,压裂后目的层温度在测试时段呈负异常(即下降)的占70.8%,呈正异常(即上升)的占20%,无明显变化的占9.2%。压裂效果的判断和评价,需根据测井资料进行综合评判。

The important method for indirectly evaluating fracturing effect is to test the variation of formation temperature before and after well fracturing.Testing the temperature of oil wells is easy and cheap,but attention should be paid to the choice of testing time and the control of instrument＇s velocity and course while testing hole temperature after fracturing.After testing 132 wells and analyzing their results,The authors have found that negative anomaly of temperature of target layer appearing at testing time interval accounts for 70.8%,positive anomaly for 20%,and non-obvious change for 9.2%.Therefore,they think that judging and evaluating the fracturing effect requires overall evaluation on the basis of well logging data.