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    • 17. 发明申请
    • WELL TREATMENT COMPOSITION CROSSLINKERS AND USES THEREOF
    • 井下处理组合物及其用途
    • WO2006095291B1
    • 2007-01-11
    • PCT/IB2006050662
    • 2006-03-02
    • SCHLUMBERGER CA LTDSCHLUMBERGER SERVICES PETROLSCHLUMBERGER HOLDINGSSCHLUMBERGER TECHNOLOGY BVDESSINGES MARIE NOELLEPESSIN JEAN-LOUIS
    • DESSINGES MARIE NOELLEPESSIN JEAN-LOUIS
    • C09K8/68C09K8/60C09K8/64C09K8/70
    • C09K8/887C09K8/64C09K8/685C09K8/703
    • This invention relates to compositions used in treating subterranean formations, which include a hydrated polymer, and a dry blended multi-functional component. The hydrated polymer and dry blended multi-functional component are mixed at the ground surface of a wellsite, and subsequently injected into the formation providing controlled delay in crosslinking to achieve targeted fluid viscosity properties. The hydrated polymer may be a guar, hydroxypropyl guar, carboxymethyl guar, carboxymethylhydroxypropyl guar, synthetic polymers, and guar-containing compounds. The dry blended multi-functional component may include a crosslinker and a chelating agent, and the well treatment fluid may further include an activator mixed with the hydratable polymer. The chelating agent may be a polyols, gluconate, sorbitol, mannitol, carbonate, or any mixtures thereof. The crosslinker may be any source of boron, alkaline earth metal borates, alkali metal borates, zirconium compounds, titanium compounds, or any combination thereof, while the activator may be a caustic soda or magnesium oxide compound. The invention further provides methods for producing a well treatment composition including providing a hydrated polymer, and providing a dry blended multi¬ functional component. Also, methods of hydraulically fracturing a subterranean formation, as well as cleanup operations and gravel packing a wellbore are provided as well.
    • 本发明涉及用于处理地下地层的组合物,其包括水合聚合物和干混多功能组分。 将水合聚合物和干混多功能组分在井场的地表面混合,随后注入地层,从而提供控制的交联延迟以达到目标流体粘度特性。 水合聚合物可以是瓜尔胶,羟丙基瓜尔胶,羧甲基瓜尔胶,羧甲基羟丙基瓜尔胶,合成聚合物和含瓜尔胶的化合物。 干混多功能组分可包括交联剂和螯合剂,井处理流体可进一步包括与可水合聚合物混合的活化剂。 螯合剂可以是多元醇,葡萄糖酸盐,山梨糖醇,甘露醇,碳酸盐或其任何混合物。 交联剂可以是硼,碱土金属硼酸盐,碱金属硼酸盐,锆化合物,钛化合物或其任何组合的任何来源,而活化剂可以是苛性钠或氧化镁化合物。 本发明还提供了用于生产井处理组合物的方法,其包括提供水合聚合物,并提供干混多功能组分。 此外,还提供了水力压裂地层的方法,以及清理操作和砾石包装井眼。