形变悬浮胶体聚合物的实验研究

Experimental researches on deformational suspensoid polymer

形变悬浮胶体聚合物是一种高弹性胶体颗粒,具有溶涨速度快、吸水性强、分散均匀、溶液无色透明的特点。在较低的浓度条件下形成的胶体溶液无游离水,颗粒体积分数大,具有形变压差小、形变能力强的优点。研究表明:形变悬浮胶体聚合物溶液稳定性好、抗剪切性能强。通过在多孔介质中的堆积、形变和运移,能够有效降低高渗透层渗透率,不会对低渗透层造成堵塞,可同时解决层内和层间的矛盾。在聚驱中及聚驱后应用可进一步提高原油采收率。

Deformational suspensoid polymer is a kind of colloidal solid with high elasticity, featured by the characteristics of rapid swelling rate, strong water absorbability, symmetrical dispersion and colorless transparent solution. The colloidal solution formed under lower concentration conditions has zero free water and is with large volume fraction, the advantage of which is good deformational ability at low pressure gradient. Research shows that the deformational suspensoid solid solution is stable with outstanding shear resistance. It can reduce the permeability of the high permeable layers by depositing, deforming and migrating in the porous media, but will not plug the low permeability layers. It can be used to improve the oil recovery both in and after polymer flooding.