CONCRETE COMPOSITIONS OPTIMIZED FOR HIGH WORKABILITY
    4.
    发明申请
    CONCRETE COMPOSITIONS OPTIMIZED FOR HIGH WORKABILITY 审中-公开
    优化组合物,以实现高可用性

    公开(公告)号:WO2009085425A1

    公开(公告)日:2009-07-09

    申请号:PCT/US2008/083751

    申请日:2008-11-17

    Abstract: Concrete compositions have a fine-to-coarse aggregate ratio optimized for decreased viscosity and increased workability. The concrete compositions include at least water, cement, coarse aggregate, and fine aggregate and have a slump of at least 1 inch and a 28-day compressive strength of at least about 1500 psi. Workability is improved by minimizing the viscosity as a function of the aggregate content. To improve workability, the concrete compositions include between 45% and 65% fine aggregate and between 35% and 55% coarse aggregate as a function of total aggregate volume. For relatively low strength concrete (1500-4500 psi), the fine aggregate is 55-65% of the total aggregate volume. For medium strength concrete (4500-8000 psi), the fine aggregate is 50-60% of the total aggregate volume. For high strength concrete (>8000 psi), the fine aggregate is 45-55% of the total aggregate volume. Overall workability can be maintained or improved even if slump is decreased.

    Abstract translation: 混凝土组合物具有优化用于降低粘度和增加可加工性的细至粗骨料比。 混凝土组合物至少包括水,水泥,粗骨料和细骨料,并具有至少1英寸和28天抗压强度至少为约1500psi的坍落度。 通过最小化作为聚集体含量的函数的粘度来改善可加工性。 为了提高可加工性,具体组合物包括45%至65%的细骨料和35%至55%之间的粗骨料作为总总体积的函数。 对于相对较低强度的混凝土(1500-4500psi),细骨料占总骨料体积的55-65%。 对于中强度混凝土(4500-8000psi),细骨料占总骨料体积的50-60%。 对于高强度混凝土(> 8000 psi),细骨料为总骨料体积的45-55%。 即使坍落度下降,总体可操作性也可以保持或提高。

    METHOD OF ENHANCING STABILITY OF CEMENT SLURRIES IN WELL CEMENTING OPERATIONS
    10.
    发明申请
    METHOD OF ENHANCING STABILITY OF CEMENT SLURRIES IN WELL CEMENTING OPERATIONS 审中-公开
    提高水泥浆在稳定运行中的稳定性的方法

    公开(公告)号:WO2016154363A1

    公开(公告)日:2016-09-29

    申请号:PCT/US2016/023846

    申请日:2016-03-23

    Abstract: The disclosure relates to a method of delaying viscosification of a well treatment fluid within a well by introducing into the well a cement slurry containing particulates of a hydratable viscosifying agent having a minimum of 90% retention on a 20 mesh screen. The presence of the hydratable viscosifying agent in the slurry prevents settling of the cement after the slurry is pumped into the well. The stability of the slurry is thus enhanced by the presence of the hydratable viscosifying agent.

    Abstract translation: 本公开涉及一种通过将包含在20目筛上具有最小90%保留度的可水合增稠剂的颗粒的水泥浆料引入孔中来延迟井内的井处理流体的粘稠度的方法。 浆料中的可水合增稠剂的存在防止了在将浆料泵入孔中后水泥的沉降。 因此,通过存在可水合的增稠剂,浆料的稳定性得到提高。

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