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发明公开
CN103254885A 一种缓交联耐高温高密度压裂液 有权

一种缓交联耐高温高密度压裂液
摘要：
本发明涉及一种缓交联耐高温高密度压裂液；由原液及交联液组成，原液与交联液的体积比为10∶1；原液重量百分比为，羟丙基瓜尔胶0.5～0.65％，加重剂A 8～45％，加重剂B 6～30％，ZJ-07助排剂0.5～2％，pH值调节剂A 0.01～0.04％，余量为水；交联液重量百分比为，交联剂YGB 0.5～3％，交联剂HT 1～2％，pH值调节剂B0.1～0.4％，破胶剂0～0.35％，余量为水；该压裂液具有良好的耐温耐剪切性能，耐温能力最高可达145℃，在145℃、170S-1的条件下剪切90min粘度仍然保持在120Pa·S以上。
摘要（英）：

The invention relates to a high-density fracturing fluid capable of slowing crosslinking and resisting high temperature. The fracturing fluid is composed of a stock solution and a crosslinking liquid with a volume ratio of 10 : 1, wherein the stock solution comprises, by weight percent, 0.5-0.65 % of hydroxypropyl guar gum, 8-45 % of a weighting agent A, 6-30 % of a weighting agent B, 0.5-2 % of a ZJ-07 cleanup additive, 0.01-0.04 % of a pH-value conditioning agent A, and the balance being water; the crosslinking liquid comprises, by weight percent, 0.5-3 % of a cross-linking agent YGB, 1-2 % of a cross-linking agent HT, 0.1-0.4 % of a pH-value conditioning agent B, 0-0.35 % of a gel breaker and the balance being water. The fracturing fluid is good in temperature-resistance and shearing-resistance performances, wherein the temperature-resistance performance is up to 145 DEG C, and a viscosity is still more than 120 Pa*S after the liquid is sheared for 90 minutes under 145 DEG C and 170 S<-1>.

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