For the water flooding development of water sensitive reservoir, pretreatment must be carried out to prevent the clay swelling.
对于水敏油藏注水开发，必须进行防膨预处理。
To improve well-operation performance, capillary suction-time testing was performed to determine salt concentration required to prevent clay swelling.
为了提高井下作业的效果，通过测试毛管渗吸时间来确定抑制黏土膨胀所需的盐浓度。
The damage during hydraulic fracturing mainly included clay swelling and grain migration, built up created by mechanical impurities, the damage of fracture conductivity and so on.
水力压裂过程中存在的损害主要包括粘土膨胀与颗粒运移损害、机械杂质引起堵塞损害、支撑裂缝导流能力的损害等。
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