【摘要】 对自行研制的新型快钻剂KZ-1进行了实验室评价。KZ-1具有较低的表面张力和润湿接触角,当加量在其临界胶束浓度0·53%附近,KZ-1可以将固体表面由弱亲水、亲水反转为强亲水状态,其较好的润湿性可有效减小钻具的摩擦。快钻剂KZ-1在钻井液中应用性能表明,KZ-1具有较好的耐温性,对泥页岩地层中粘土有很好的抑制水化、分散及膨胀的作用。快钻剂KZ-1通过改变井底岩石表面亲水性、增加滤失量,而有效减小水力压力造成的压持效应,达到进一步提高钻速的目的。更多还原

【Abstract】 A new type of fast drilling agent KZ-1 developed by ourselves was evaluated in laboratory.With lower interfacial tension and wetting contact angle,KZ-1 changed the solid surface from weak hydrophilicity or hydrophilicity to strong hydrophilicity when its concentration was about 0.53% of CMC.Its good wetting ability decreased the friction of drilling rig effectively.The result of using KZ-1 in drilling fluid showed that it had good temperature tolerance and good rejection capability to hydration,dispersion and swelling of the clay in shale.KZ-1 increased drilling speed by changing the interfacial water affinity,increasing filter loss and decreasing chip hold down effect from water pressure.更多还原