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发明公开
CN105754576A 页岩气滑溜水压裂液用防膨剂及其制备方法 无效 - 驳回

页岩气滑溜水压裂液用防膨剂及其制备方法
摘要：
本发明属于低渗透油气田开采技术领域，具体地，涉及一种页岩气滑溜水压裂液用防膨剂其制备方法。页岩气滑溜水压裂液用防膨剂，质量百分比组成如下：阳离子碳氢表面活性剂10％～20％，胍盐10％～20％，阳离子氟碳表面活性剂0.5％～1％，乙醇5～10％，余量为水。本发明采用不含无机盐的有机复合防膨剂，利用防膨剂的协同效应，有效防止页岩膨胀，同时降低表面张力，防止水锁，工艺简单，防页岩膨胀效果显著。
摘要（英）：

The invention belongs to the technical field of low-permeability oil and gas field exploitation and particularly relates to an anti-swelling agent for shale gas slickwater fracturing fluid and a preparation method of the anti-swelling agent.The anti-swelling agent comprises, by weight percentage, 10-20% of positive-ion hydrocarbon surfactant, 10-20% of guanidinium, 0.5-1% of positive-ion fluorocarbon surfactant, 5-10% of ethanol and the balance of water.The anti-swelling agent has the advantages that the organic composite anti-swelling agent which does not contain inorganic salt is used, the synergic effect of the anti-swelling agent is used to effectively prevent shale swelling, surface tension is lowered, water blocking is prevented, simpleness in process is achieved, and an evident shale swelling preventing effect is achieved.

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