Method of Using Asparaginase as a Polyacrylamide Enzyme Breaker
    3.
    发明申请
    Method of Using Asparaginase as a Polyacrylamide Enzyme Breaker 有权
    使用天冬酰胺酶作为聚丙烯酰胺酶切断器的方法

    公开(公告)号:US20120285685A1

    公开(公告)日:2012-11-15

    申请号:US13467906

    申请日:2012-05-09

    IPC分类号: E21B43/27 C09K8/62 E21B43/26

    摘要: Asparaginase, such as asparaginase derived from Aspergillus oryzae, may be used to break down or defragment polyacrylamides in oil field applications. The asparaginase is useful in reducing the viscosity of a fracturing fluid containing polyacrylamide and a crosslinking agent. The asparaginase is also useful in breaking down or defragmenting a polyacrylamide friction reducing agent, such as in a slickwater fracturing operation. Asparaginase may also be used to break down or defragment filter cakes containing polyacrylamide.

    摘要翻译: 天冬酰胺酶,例如源自米曲霉的天冬酰胺酶,可用于在油田应用中分解或碎片聚丙烯酰胺。 天冬酰胺酶可用于降低含有聚丙烯酰胺和交联剂的压裂液的粘度。 天冬酰胺酶也可用于分解或碎片聚丙烯酰胺减摩剂,例如在滑水压裂操作中。 也可以使用天冬酰胺酶来分解或碎片含有聚丙烯酰胺的滤饼。

    Compositions and Methods of Treating High Temperature Subterranean Formations
    4.
    发明申请
    Compositions and Methods of Treating High Temperature Subterranean Formations 有权
    处理高温地下地层的组成和方法

    公开(公告)号:US20120006551A1

    公开(公告)日:2012-01-12

    申请号:US13236378

    申请日:2011-09-19

    IPC分类号: E21B43/26 C09K8/70

    摘要: Well treatment fluids and methods of treating high temperature subterranean formations of up to about 500° F. (260° C.) are provided. The well treatment fluids and methods utilize a high molecular weight synthetic copolymer and a pH buffer than maintains a pH in a range of about 4.5 to about 5.25 for the fluids. The high molecular weight synthetic copolymer is derived from acrylamide, acrylamidomethylpropanesulfonic acid, and vinyl phosphonates. The well treatment fluids may be energized or foamed.

    摘要翻译: 提供了处理液和处理高达约500°F(260℃)的高温地下地层的处理流体和方法。 良好的处理流体和方法利用高分子量合成共聚物和pH缓冲液,而不是将pH保持在流体的约4.5至约5.25的范围内。 高分子量合成共聚物衍生自丙烯酰胺,丙烯酰胺基甲基丙烷磺酸和乙烯基膦酸酯。 良好的处理流体可以被通电或发泡。

    Method of Treating Subterranean Formations With Porous Ceramic Particulate Materials
    5.
    发明申请
    Method of Treating Subterranean Formations With Porous Ceramic Particulate Materials 有权
    用多孔陶瓷颗粒材料处理地下地层的方法

    公开(公告)号:US20090008094A1

    公开(公告)日:2009-01-08

    申请号:US12211741

    申请日:2008-09-16

    IPC分类号: E21B43/267 E21B43/02

    摘要: Methods and compositions useful for subterranean formation treatments, such as hydraulic fracturing treatments and sand control that include porous materials. Such porous materials may be selectively configured porous material particles manufactured and/or treated with selected glazing materials, coating materials and/or penetrating materials to have desired strength and/or apparent density to fit particular downhole conditions for well treating such as hydraulic fracturing treatments and sand control treatments. Porous materials may also be employed in selected combinations to optimize fracture or sand control performance, and/or may be employed as relatively lightweight materials in liquid carbon dioxide-based well treatment systems.

    摘要翻译: 用于地下地层处理的方法和组合物,例如水力压裂处理和包括多孔材料的防砂处理。 这种多孔材料可以是选择性地构造的多孔材料颗粒,其被选择的玻璃材料,涂层材料和/或穿透材料制造和/或处理以具有期望的强度和/或表观密度,以适应特定的井下条件以进行良好的处理,例如水力压裂处理和 防沙治疗。 也可以选择组合使用多孔材料以优化断裂或防砂性能,和/或可用作基于液体二氧化碳的井处理系统中相对较轻的材料。

    Cellulosic Particulates and Method of Manufacture and Use Thereof
    10.
    发明申请
    Cellulosic Particulates and Method of Manufacture and Use Thereof 有权
    纤维素颗粒及其制造和使用方法

    公开(公告)号:US20090044942A1

    公开(公告)日:2009-02-19

    申请号:US12191255

    申请日:2008-08-13

    IPC分类号: E21B43/267

    摘要: Spherical porous and non-porous cellulose particulates for use in sand control as well as stimulation procedures, may be prepared by first dissolving cellulosic materials (such as fibrous cellulose, wood pulp linters, cotton balls and/or paper), in the substantial absence of water or a nitrogen-containing base, in an ionic liquid. The solution is then combined with a cellulose-insoluble liquid to render the spherical particulates. The surface of the cellulosic particulates may be treated with a coating or penetrating layer.

    摘要翻译: 用于防砂和刺激方法的球形多孔和无孔纤维素颗粒可以通过首先将纤维素材料(例如纤维状纤维素,木浆短绒,棉球和/或纸)溶解在基本上不存在 水或含氮碱,在离子液体中。 然后将溶液与不溶于纤维素的液体混合以制成球形颗粒。 可以用涂层或渗透层处理纤维素颗粒的表面。