嵩县多金属矿区复杂地层岩心钻探施工综合技术

Comprehensive Technology of Coring Drilling in Complex Formation of Poly-metallic Deposit in Song County

摘要:

总结了嵩县多金属矿区复杂地层岩心钻探的经验，着重介绍了处理金刚石钻头打滑的磨砂方法，在风化层中的跟管钻进方法，多级套管护孔，水泥护壁，801堵漏剂与植物胶、锯末的试用，植物胶锯末泥浆堵漏，润滑减阻等复杂地层综合治理措施。实践证明，采取这些技术措施后，降低了施工成本，提高了钻进效率。

Abstract:

The paper summed up the coring drilling experience in complex formation of poly-metallic miming area in Song County and emphatically introduced the comprehensive treatment measures of quartz grinding method for diamond bit slipping; drilling with simultaneous casing in weathered layer; different size casing for hole protection; wall cementing; 801 LCM, plant gum and sawdust for leaking stoppage. The construction cost was lowered and drilling efficiency was improved by these technical measures.