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发明公开
CN105131931A 耐200℃高温压裂施工用冻胶的制备方法 无效 - 撤回

耐200℃高温压裂施工用冻胶的制备方法
摘要：
本发明公开耐200℃高温压裂施工用冻胶的制备方法，该方法包括以下步骤：改性羟丙基胍胶的合成；有机硼锆交联剂的合成；耐200℃高温压裂施工用冻胶的合成，搅拌后即可形成耐200℃高温压裂施工用冻胶。本发明效果是通过在羟丙基胍胶中引入刚性基团改性剂，可将其热稳定性提高30℃-45℃，并能更好地与聚丙烯酰胺进行复配；与有机硼锆交联剂交联所形成的压裂施工用冻胶具有良好的耐温效果，其在200℃和170s-1的剪切速率条件下，体系粘度维持在50mpa·s以上的时间可超过65min，且破胶后水化彻底(＜5mPa·s)、残渣含量低(＜550mg·L-1)、携砂效果好(基液粘度为93mPa·s)。
摘要（英）：

The present invention discloses a 200 DEG C high temperature resistance fracturing construction jelly preparation method, which comprises: synthesizing modified hydroxypropyl guar gum, synthesizing an organic boron-zirconium cross-linking agent, synthesizing a 200 DEG C high temperature resistance fracturing construction jelly, and stirring to form the 200 DEG C high temperature resistance fracturing construction jelly. According to the present invention, the rigid group modifier is introduced into the hydroxypropyl guar gum, such that the thermal stability can be increased by 30-45 DEG C, and the jelly can well compounded with polyacrylamide; the fracturing construction jelly formed through cross-linking with the organic boron-zirconium cross-linking agent has a good temperature resistance effect, wherein the maintaining time of the system viscosity of more than or equal to 50 mpa.s can exceed 65 min at the temperature of 200 DEG C under the shear rate of 170 s<-1>; and the hydration is complete after the gel breaking (less than 5 mPa.s), the residue content is low (less than 550 mg.L<-1>), and the sand carrying effect is good (the base fluid viscosity is 93 mPa.s).

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