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    DEGRADABLE MATERIALS
    6.
    发明申请
    DEGRADABLE MATERIALS 审中-公开
    可降解材料

    公开(公告)号：US20130338271A1

    公开(公告)日：2013-12-19

    申请号：US13994331

    申请日：2011-12-08

    申请人： Michael D. Crandall ,  Rudolf J. Dams ,  Michelle M. Hewitt ,  Ignatius A. Kadoma ,  Siegmund Papp ,  Yong K. Wu ,  Jay M. Jennen ,  Sasha B. Myers

    发明人： Michael D. Crandall ,  Rudolf J. Dams ,  Michelle M. Hewitt ,  Ignatius A. Kadoma ,  Siegmund Papp ,  Yong K. Wu ,  Jay M. Jennen ,  Sasha B. Myers

    IPC分类号： C08L67/04

    CPC分类号： C08L67/04 ,  C08K5/0016 ,  C08L2201/06 ,  C08L2205/02

    摘要： The present disclosure relates to a degradable material comprising (a) from about 60 weight percent to about 97 weight percent of a first material based on the total weight of the degradable material, and (b) from about 3 weight percent to about 40 weight percent of a second material based on the total weight of the degradable material, where the second material is an oligomer comprising lactate and giycolate. In another aspect, the present disclosure provides a degradable material comprising (a) poly lactic acid, and (b) an oligomer comprising lactate and giycolate, wherein the degradable material has a Tg less than 56° C. In still another aspect, the present disclosure provides a degradable material comprising (a) poly lactic acid, and (b) an oligomer comprising lactate and giycolate, wherein the degradable material has a tan delta peak of less than 65° C. It has been surprisingly found that the degradable materials according to the present disclosure provide physical properties that are not inherent to poly lactic acid alone. It has also been surprisingly found that the degradable materials disclosed herein provide improvements with respect to the processability, production costs, flexibility and ductility without decreasing their degradability.

    摘要翻译： 本公开内容涉及可降解材料，其包含（a）基于可降解材料的总重量的约60重量％至约97重量％的第一材料，和（b）约3重量％至约40重量％ 基于可降解材料的总重量的第二种材料，其中第二种材料是包含乳酸盐和双羟萘酸盐的低聚物。 另一方面，本公开提供了一种可降解材料，其包含（a）聚乳酸和（b）包含乳酸盐和木糖苷的低聚物，其中所述可降解材料的Tg小于56℃。另一方面，本发明 公开提供了一种可降解材料，其包含（a）聚乳酸和（b）包含乳酸盐和木糖醇的低聚物，其中所述可降解材料具有小于65℃的tanδ峰值。令人惊奇地发现， 本公开提供了单独聚乳酸不固有的物理性质。 还惊奇地发现，本文公开的可降解材料提供了相对于可加工性，生产成本，柔韧性和延展性而不降低其降解性的改进。

    METHODS OF TREATING SUBTERRANEAN WELLS USING CHANGEABLE ADDITIVES
    7.
    发明申请
    METHODS OF TREATING SUBTERRANEAN WELLS USING CHANGEABLE ADDITIVES 有权
    使用可变添加剂处理土层的方法

    公开(公告)号：US20100288495A1

    公开(公告)日：2010-11-18

    申请号：US12808115

    申请日：2008-12-05

    申请人： Dean Michael Willberg ,  James G. Carlson ,  Ignatius A. Kadoma ,  Yong K. Wu ,  Michael D. Crandall

    发明人： Dean Michael Willberg ,  James G. Carlson ,  Ignatius A. Kadoma ,  Yong K. Wu ,  Michael D. Crandall

    IPC分类号： E21B43/04 ,  E21B43/16 ,  E21B43/267 ,  E21B43/26

    CPC分类号： C09K8/80 ,  C09K8/887 ,  E21B43/04 ,  E21B43/26

    摘要： Fluid compositions and methods of making and using same are described, one composition comprising a well treatment fluid and an additive combined with the well treatment fluid, wherein the additive is selected from solids, liquids and combinations thereof, the additive having a surface shape, at least one property of the surface shape enabling it to change under influence of a controllable parameter after the composition is deployed into a hydraulic fracture or gravel pack. In methods of the disclosure, the additive exists initially in a first state, and then is changed to a second state. The first state may increase proppant flowback efficiency, while the second state may increase hydraulic conductivity. In certain embodiments, the additive may change back to its first state.

    摘要翻译： 描述了制备和使用它们的流体组合物和方法，一种组合物包含井处理流体和与井处理流体组合的添加剂，其中添加剂选自固体，液体及其组合，添加剂具有表面形状， 表面形状的至少一个性质使得其在组合物部署到水力裂缝或砾石包装之后在可控参数的影响下变化。 在本公开的方法中，添加剂最初存在于第一状态，然后变为第二状态。 第一种状态可能会增加支撑剂回流效率，而第二种状态可能会增加水力传导性。 在某些实施方案中，添加剂可以改变回其第一状态。