无固相聚合物钻井液在香格里拉普朗铜矿区复杂地层钻进中的试验与应用

Application of the Solid-Free Polymer Drilling Fluid in Drilling of the Complex Strata in Pulang Copper Mining Area of Shangri-La

摘要:

针对香格里拉普朗铜矿区所遇到的复杂地层，通过室内试验研究，确定采用植物胶作为主剂、聚丙烯酰胺和LP作为辅剂得到无固相聚合物钻井液，在钻探矿区ZK0409钻孔中的绳索取心钻进中使用，成功解决了该矿区复杂地层的钻进问题。探讨了无固相聚合物钻井液的最佳配方，并分析了其在复杂地层钻进中的作用机理。

Abstract:

Aimed to the complex strata of Pulang copper mining area of Shangri-La, and by the experimental date and theoretical analysis, the solid-free polymer drilling fluid consisting of host agent (vegetable-gum) and assistant agents(PAM & LP) was fixed, which was applied in the wire-line drilling construction for ZK0409, the drilling difficulties in complex strata of Pulang copper mining area of Shangri-La were vercome. The paper discussed the optimum formula of the solid-free polymer drilling fluid and analyzed its action mechanism in complex strata.