Development and Application of High-Performance Series Soluble Bridge Plugs
To enhance the applicability and stability of soluble bridge plugs,a kind of soluble rubber with multi-hydrolyzed polymer functional groups,high-strength soluble metal materials,and a specialized formulation system were developed,and then,mechanical and dissolution performance tests were conducted at different temper-atures to validate the material's properties.Based on the structural principles and characteristics of the soluble bridge plugs,the high-performance series of soluble bridge plugs was developed.After that,comprehensive per-formance testing and field trials were conducted.The testing results show that these developed bridge plugs The testing results show that the soluble bridge plugs can ensure an effective sealing for over 24 h at the pressure of 70 MPa and the temperature of 30 to 150℃,and the dissolution time is adjustable and controllable.Field trials and applications across various oil and gas fields show that these plugs exhibit stable and reliable comprehensive per-formance in terms of setting,pressure-bearing,and dissolution,and they can be applied in complex conditions and effectively support operations such as hydraulic fracturing in horizontal wells.The conclusions obtained may provide a strong technical support for the efficient development of unconventional oil and gas resources and for the cost-ef-fective enhancement of staged hydraulic fracturing in horizontal wells.
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