With the deepening of oil and gas exploration and development,there are more and more high-temperature,high-pressure,and complex formation wells being drilled.Problems such as unstable wellbore,well leakage,and well collapse often occur,which bring certain safety hazards to drilling construction.Micro nano plugging agents in drilling fluids can effectively block formation fractures and pores,improve wellbore stability,and reduce the risk of wellbore leakage.The main purpose of this study is to investigate the evaluation method of micro nano plugging performance of drilling fluids,laying the foundation for a reasonable evaluation of drilling fluids.
维普
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