In low temperature and low salinity formation conditions,the overall performance of soluble bridge plug cannot meet the actual operation requirements of some oilfields in China.In view of material selection,struc-tural design and calculation,and operating process,a soluble bridge plug suitable for low temperature and low sa-linity conditions was developed,and tested on site.The results show that the soluble bridge plug can be applied in low temperature and low salinity formation conditions,with a maximum temperature/pressure of 150℃/70 MPa.It can be completely dissolved under the conditions of 20℃to 70℃and Cl-mass concentration of 1 000 to 3 000 mg/L.In field fracturing,the late plug drilling process can be omitted,which significantly improves the field pro-duction efficiency.The soluble bridge plug can be fully dissolved,which significantly reduces the field operation costs,so the selection of a suitable soluble bridge plug can achieve maximum operation effect.The research find-ings provide technical guidance for achieving efficient and low-cost fracturing operation in oilfields.
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维普
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