MaHW6004井泵送桥塞射孔联作复杂情况处理

MaHW6004井是中石油在玛18井区部署的一口重点评价井，采用泵送桥塞多簇射孔联作分段压裂完井工艺，其压裂后的产量决定着该区块后续施工井的部署及开发。利用井下微地震检测仪、压裂施工数据及曲线图，分析判断井内出现的桥塞未丢手、桥塞坐封失效及下桥塞遇阻、压裂砂堵等复杂情况，制定了大修穿心打捞、连续油管冲砂、压裂后大排量清洗井筒的解决方案，并提出了一系列有针对性的防范措施。研究表明，下入的桥塞应与套管钢级相适应，采用井下微地震监测可以有效监测到桥塞点火坐封、裂缝起裂位置及走向等信息，为压裂施工提供了基础数据资料，为同类井施工提供了参考借鉴。

Complex case processing of pumping bridge plug and clustering perforation for the well MaHW6004

Well MaHW6004 is an important appraisal well, which is arranged in the Ma 18 well area by CNPC. Combination technique of pumping bride plug, clustering perforation and multi-stake fractured completion was used, and the deployment and development of the follow-up constructed wells in this block were decided by the production rate after fracturing. By using downhole microseismic detector, fracturing operation data and curve, we have analyzed and judged the complicated conditions such as the bridge plugging without releasing, bridge plug moving, bridge plug stuck, sand plugging after fracturing and so on. The solution for the fishing through drill pipe technique, coiled tubing sand washing, and large displacement cleaning of wellbore after fracturing is formulated, and a series of preventive measures are put forward. The study shows that the the bride plug which was run down to shall meet the steel grade of casings. The adopted downhole microseismic monitoring method can effectively detect bride plug igniting setting, the location and strike of facture initiation and etc, which provides basic data and reference for fracturing operation in similar wells in the future.