The damage during hydraulic fracturing mainly included clay swelling and grainmigration, built up created by mechanical impurities, the damage of fracture conductivity and so on.
The countermeasures are proposed to prevent fine-grainmigration. The experimental study is conducted emphatically for the evaluation method of anti-swelling durability of clay stabilizer.
并提出了预防微粒运移技术对策，重点对粘土稳定剂的防膨长效性评价方法进行了探讨性的试验研究。
3
It is shown from TEM analysis that the fine grained matrix materials are mainly derived from the huge clasts by subgrain rotation and local grain boundary migration.