基于邻井数据耦合的压裂井干扰试井工艺研究与应用

大庆油田随着压裂频次的增加和井网的完善程度影响,压裂引起的井间干扰问题逐渐引起重视,目前缺少有效手段监测压裂井压裂施工对邻井的影响。针对上述问题,参考物联网数据访问技术提出了基于物联网管理系统的压裂井干扰试井工艺,制定了邻井井口压力分级预警机制,并进行了大量现场试验。施工结果显示,整个监测过程中压裂井干扰试井监测设备工作稳定,测试的数据准确无干扰,数据传输连续且传输速度较快。27口监测井中16口井与压裂井产生了联动响应,通过采取措施仅有1口井出现了压窜的现象。现场实验结果表明,采用该技术可以有效降低压裂井压裂时对邻井的干扰程度。

Research on Fracturing Interference Monitoring System Based on Coupling Data of Adjacent Wells

With the increase of fracturing frequency and the improvement of well pattern in Daqing Oilfield,the interwell interference caused by fracturing has gradually attracted attention.At present,there is a lack of effective means to monitor the impact of fracturing wells on adjacent wells during fracturing construction.In view of the above problems,a fracturing interference monitoring system based on the bottom hole pressure data of adjacent wells is proposed by using the idea of Internet of Things technology.At the same time,the principle of early warning of wellhead pressure in adjacent wells with different grades is formulated.Field tests were carried out.The construction results show that disturbance monitoring system based on cloud services and Internet of Things access technology can transmit pressure data in time and continuously.In 27 monitoring wells,16 wells and fracturing wells were monitored to produce linkage response.Only one well has been fractured by taking measures.It shows that the interference degree of fractured wells to adjacent wells during fracturing is effectively reduced by using this technology.