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发明公开
CN107699222A 一种耐高温交联酸液及其制备方法 无效 - 驳回

一种耐高温交联酸液及其制备方法
摘要：
本发明涉及油田储层改造技术领域，具体涉及一种耐高温交联酸液及其制备方法。其中，所述耐高温交联酸液，按质量百分比计，包括HCl 10-25％，聚合物稠化剂0.8-1.5％，有机锆交联剂1-2％及余量的水。其中，制备所述耐高温交联酸液的方法为：边搅拌边向盐酸和水中加入聚合物稠化剂，溶解均匀形成澄清液体后静置至得到均匀的粘稠液体；边搅拌边向粘稠液体中加入有机锆交联剂，即得耐高温交联酸液。本发明的耐高温交联酸液交联后形成的冻胶，在160℃，170s-1条件下剪切90min，残余粘度可保持在50mPa·s以上。
摘要（英）：

The invention relates to the technical field of oil field reservoir reformation, in particular to high-temperature-resistant crosslinking acid liquid and a preparation method thereof. The high-temperature-resistant crosslinking acid liquid comprises the following components in percentage by mass: 10 to 25 percent of HCl, 0.8 to 1.5 percent of a polymer thickening agent, 1 to 2 percent of an organic zirconium crosslinking agent and the balance of water. The preparation method of the high-temperature-resistant crosslinking acid liquid comprises the following steps: adding the polymer thickeningagent into hydrochloric acid and water while stirring, dissolving uniformly to form clear liquid and standing to obtain uniform viscous liquid; and adding the organic zirconium crosslinking agent intothe viscous liquid while stirring to obtain the high-temperature-resistant crosslinking acid liquid. Jelly formed after the high-temperature-resistant crosslinking acid liquid is crosslinked is sheared for 90 minutes under the conditions of 160 DEG C and 170 s<-1>, and the residual viscosity can maintain 50 mPa*s or above 50 mPa*s.

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