阿莫科的钻井人员在墨西哥湾钻井中采用了一种新型的氯化钙和聚合物基钻井液。在超深水域中钻井眼顶部粘泥地层时,这种钻井液能够较好地抑制住或包住活性粘泥,把钻头和井底钻井总成的泥包排除或降至最小,从而提高机械钻速,降低每米的钻井成本。这种钻井液具有好的流变性和流动性,既能把钻屑从井底举升到地面,又能在钻高活性粘泥地层时防止地层水化,稳定井筒。此外,它还能包住钻屑,使其不受水化而与隔水管、井口、钻杆柱、井底钻井总成、套管等粘在一起,从而大大降低与钻井有关的事故。氯化钙和聚合物钻井液的成本低于部分水解聚丙酰 Amoco drillers used a new type of calcium chloride and polymer-based drilling fluid in the Gulf of Mexico drilling. When ultra-deep waters are drilled at the top of clay slime formations, this drilling fluid is better at inhibiting or enveloping the activated slime, removing or minimizing the mud bits from the bit and downhole well assembly, increasing the mechanical ROP, lower drilling costs per meter. This drilling fluid has good rheology and fluidity. It not only raises drilling cuttings from the bottom of the well to the ground, but also prevents formation hydration and stabilizes the wellbore when drilling high activity slime formations. In addition, it encases drill cuttings from hydration and adheres to risers, wellheads, drill string, downhole drilling assemblies, casing, etc., significantly reducing drilling-related accidents. The cost of calcium chloride and polymer drilling fluids is lower than that of partially hydrolyzed polypropionyl