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发明公开
CN103911138A 密度可调型复合加重压裂液 无效 - 驳回

密度可调型复合加重压裂液
摘要：
本发明公开了一种密度可调型复合加重压裂液，按质量百分比由以下各组分配制而成：增稠剂0.25-1.0％、粘土稳定剂0.2-0.6％、助排剂0.2-0.6％、发泡剂0.2-0.6％、温度稳定剂0.1-0.5％、PH调节剂0.03-0.3％、杀菌剂0.05-0.5％、交联剂0.3-1.0％、加重剂1-80％、余量为水。所述加重剂为氯化钠、氯化钾、溴化钠、溴化钾中的一种或两种任意比的混合物。本发明的压裂液可以应用于深井致密油气藏储层压裂施工，能有效的达到减小施工压力的目的，从而可以保护地面承压管汇。
摘要（英）：

The invention discloses density adjustable type composite weighted fracturing fluid. The density adjustable type composite weighted fracturing fluid is prepared from the following components in percentage by mass: 0.25-1.0% of thickening agent, 0.2-0.6% of clay stabilizer, 0.2-0.6% of cleanup agent, 0.2-0.6% of foaming agent, 0.1-0.5% of temperature stabilizer, 0.03-0.3% of PH regulator, 0.05-0.5% of sterilizing agent, 0.3-1.0% of crosslinking agent, 1-80% of weighting agent and the balance of water, wherein the weighting agent is one of or a mixture of two of sodium chloride, potassium chloride, sodium bromide and potassium bromide. The density adjustable type composite weighted fracturing fluid disclosed by the invention can be applied to the fracturing construction of deep well compact oil and gas reservoirs and is capable of effectively achieving the purposes of reducing construction pressure, thus a ground pressure-bearing manifold can be protected.

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