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Method of enhancing fracture conductivity

机译:增强裂缝传导性的方法

摘要

The method includes the introduction of a proppant-free stage and a proppant laden stage into the wellbore and/or subterranean formation. The method increases the effective fracture width and enhances fracture conductivity within the formation. Either the proppant-free stage or the proppant laden stage contains a breaker. At least one of the proppant-free stage or proppant laden stage contains a viscosifying agent to which the breaker has affinity. The viscosifying agent may be a superabsorbent, a viscosifying polymer (other than a superabsorbent) or a viscoelastic surfactant. The breaker has greater affinity for the viscosifying agent not present in the same stage as the breaker. Either the proppant-free stage or the proppant laden stage may be foamed.
机译:该方法包括将无支撑剂阶段和载有支撑剂的阶段引入井眼和/或地下地层中。该方法增加了有效裂缝宽度并增强了地层内的裂缝传导率。无支撑剂阶段或载有支撑剂的阶段都包含破碎剂。无支撑剂阶段或载有支撑剂的阶段中的至少一个包含增粘剂,其与破胶剂具有亲和力。增粘剂可以是超吸收剂,增粘聚合物(除超吸收剂以外)或粘弹性表面活性剂。破乳剂对与破乳剂不在同一阶段的增粘剂具有更大的亲和力。不含支撑剂的阶段或载有支撑剂的阶段均可发泡。

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