非离子聚合物稳定水敏岩层的应用研究

水敏岩层机械破碎出露的新鲜岩面遇水侵蚀产生软化或泥化现象，致使孔（槽）壁变形量增大而失稳。实验表明，低聚合度、非离子型、结晶性好的高分子聚合物无固相稳定液，能以较快的竞争吸附速度在岩石的内、外表面产生渗析胶结和吸附胶结，并在不可逆的作用力下成膜，因而能抑制由水引起的岩石软化、泥化和崩解，可用以解决使用各类泥浆自由水滤失量大且泥皮易脱落而造成的孔（槽）壁坍塌问题。

Applied research on stabilization of water-sensitive strata with non-ionic ploymers

That water-sensitive stratum's fresh surface exposed by engineering machine are softened and argillizated by water will cause the deformation of rock increasing and lead the hole (pit) wall to be unsteady. Experiments indicate that non-solid phase stabilizing fluid of macromolecule polymeric of low polymerization degree, non-ion and good crystallization is able to produce dialytic and absorbent cementation on the inner and outer surfaces of the rock with rapider competitive absorption rate and form a film under a irreversible agent. Therefore, PAA non-ionic polymers can be used to solve hole (pit) wall collapsing problems caused by a great quantity of free water filtered from mud and the mud skin easy to fall off since they restrain water's softening, argillizating and calving.