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压裂是国内外各油田对储层进行改造并行之有效的一项技术措施,但在压裂过程中出现的卡钻事故严重制约着施工的进度和压裂质量。在轮古××井进行油管拖动分层喷射射孔和酸压新工艺的先导实验过程中,环空里的压裂砂堵导致砂卡。介绍了该井砂卡的处理过程,分析了砂卡的原因,并给出了处理类似水平井井下复杂情况或事故的注意事项。
Fracturing is a technical measure that is effective for reservoirs in oilfields both at home and abroad. However, the occurrence of stuck pipe accidents in the process of fracturing severely restricts the progress of construction and the quality of fracturing. During the pilot experiment of the new technology of stratified injection by oil pipe dragging and acid pressure in Well Lun Xugu, fracturing sand blockage in the annulus led to sand card. The process of sand well card is introduced, the reason of sand card is analyzed, and some precautions to deal with the complicated situation or accident of horizontal well are given.