超深井钻井液固控系统配套合理性探讨

深井、超深井钻井时井下问题更为复杂，这对钻井液性能提出了更高的要求。目前国内超深井固控系统设计不太合理，技术性能较落后，钻井液固相含量控制、加重剂的回收及油基钻井液的处理效果达不到预期要求。通过分析钻井液中固相颗粒特性，结合超深井地层特点以及国内油田现有固控设备的配置及使用问题，探讨满足超深井要求的固控系统的合理配置。优化后的固控系统提高了固控效率，可以实现加重剂、钻井液的双相回收及利用。优化思路可以为油田固控系统配置的合理性改进提供参考和借鉴。

Matching rationality discussion of ultra-deep well drilling fluid solid control system

Deep and ultra-deep well drilling is very common in petroleum industry. With the deepening of strata, downhole problems become more complex, and safety accidents become more frequent, which puts forward higher requirements for drilling fluid quality. At present, solid control system design is lack of rationality, and the technical properties have fallen behind, making it unable to reach the desired effect that the drilling fluid solid control, recycling of weighting agent, and the processing of oil-based drilling fluid. By analyzing the characteristics of the drilling fluid solid phase particles, combined with ultra-deep strata characteristics and the existing solid control equipment configuration and the using problem in domestic oil fields, the rational allocation of solid control system satisfying the ultra-deep well requirements was discussed. The optimized solid control system increased the solid control efficiency, and achieved the bidirectional recovery of weighting agent and drilling fluid. The idea provides references for the rationality improvement of solid control system configuration.