Development and Performance Evaluation of Soluble Bridge Plug Used in Low Temperature and Low Salinity Conditions
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.
NETL
NSTL
万方数据
维普
