田一井位于周口坳陷午阳凹陷田庄鼻状构造上 ,地层含有较厚的盐层、盐膏层以及极易水化膨胀分散的泥页岩。优选出一套欠饱和盐水聚合物钻井液体系 ,该体系性能稳定 ,抑制性强 ,抗污染效果好 ,防卡、防塌 ,满足施工需要 ,为在该地区安全、经济、快速钻井提供了可靠保证。 Tian Yijing is located in the nose-shaped structure of Tianzhuang Depression in Zhoukou Depression. The strata contain thick salt layers, salt-gypsum layers and shale that is easily hydrated and dispersed. A set of undersaturated brine polymer drilling fluid system is preferred. The system has the characteristics of stable performance, strong inhibition, good anti-pollution effect, anti-jamming and anti-collapse, which meets the construction needs and provides reliable, economical and rapid drilling in the area Guarantee.