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公开(公告)号：US10150903B2
公开(公告)日：2018-12-11
申请号：US15203007
申请日：2016-07-06
发明人： Yongxue Lin , Xianguang Wang , Zhoujun Li , Xiuzhen Han , Sheng Li , Xiaohua Yang , Xiong Li , Jianwu Zhen , Suli Zhao
摘要： A composition and use thereof are disclosed herein. The composition comprises at least two selected from the group of amphiphilic block copolymer, polyurethane and acidic ionic compound. Also an oil-based drilling fluid comprising the composition and a method improving shearing force of oil-based drilling fluid are disclosed. The composition disclosed herewith can raise the shearing force of oil-based drilling fluid.
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公开(公告)号：US20130079257A1
公开(公告)日：2013-03-28
申请号：US13628017
申请日：2012-09-26
发明人： Yongxue Lin , Xiaohua Yang , Lin Wang , Lishan Cai , Xiaoqiang Dong , Long Chai
CPC分类号： C09K8/035
摘要： The present invention provides a dispersant and a drilling fluid containing the dispersant. The dispersant comprises the product obtained from the reaction of water, lignin, phenol, sulfonating agent, telogen and catalyst at 140-220° C., preferably at 160-180° C.; the catalyst is one or more selected from the group consisting of sulfamic acid, p-toluenesulfonic acid and benzenesulfonic acid. The dispersant provided by the present invention not only can significantly lower the viscosity of the drilling fluid but also plays a role in reducing filtration loss.
摘要翻译： 本发明提供了含有分散剂的分散剂和钻井液。 分散剂包括在140-220℃，优选在160-180℃下由水，木质素，苯酚，磺化剂，脱水剂和催化剂的反应获得的产物。 催化剂是选自氨基磺酸，对甲苯磺酸和苯磺酸中的一种或多种。 本发明提供的分散剂不仅可显着降低钻井液的粘度，而且还可降低过滤损失。
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公开(公告)号：US10774257B2
公开(公告)日：2020-09-15
申请号：US16129177
申请日：2018-09-12
发明人： Yongxue Lin , Xiaohua Yang , Lin Wang , Jian He , Junbin Jin , Fan Yang , Haibo Wang
IPC分类号： C09K8/24 , C08F293/00 , C08F220/56
摘要： A random copolymer, a preparation method of the random copolymer, a drilling fluid containing the random copolymer. The random copolymer contains structural unit (A) represented by formula (1), structural unit (B) represented by formula (2), structural unit (C) represented by formula (3), and structural unit (D) represented by formula (4) or (5): wherein X is halogen. When the random copolymer is used as a filter loss reducer in a high-calcium drilling fluid, the filter loss of the high-calcium drilling fluid can be reduced.
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公开(公告)号：US10538484B1
公开(公告)日：2020-01-21
申请号：US16129285
申请日：2018-09-12
发明人： Xiaohua Yang , Yongxue Lin , Jian He , Lin Wang , Haibo Wang , Fan Yang , Zhoujun Li , Xiaoqiang Dong
IPC分类号： C07C235/28 , C07H5/04 , C07C231/02 , C07C309/21 , C07C309/29 , C07C235/30
摘要： A maleamic acid monomer, and a preparation method and a use of the maleamic acid monomer. The structural formula of the monomer is as follows: formula (1), wherein, R is selected from The maleamic acid monomer provided in the present invention may be used as a comonomer to prepare temperature-tolerant and calcium salt-tolerant polymers.
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公开(公告)号：US09243180B2
公开(公告)日：2016-01-26
申请号：US13628020
申请日：2012-09-26
发明人： Xiaohua Yang , Lin Wang , Yongxue Lin , Sheng Li , Long Chai , Xiaoqiang Dong
摘要： The present invention provides a filtration control agent and a drilling fluid containing the same. The filtration control agent comprises the product obtained from the reaction of water, lignite, aldehyde and sulfonate polymer at 180-220° C. and the units containing sulfonate groups in the molecular chains of sulfonate polymer are at least 30 wt %. The filtration control agent provided by the present invention features a good filtration loss reduction effect and a low viscosity effect and can improve the rheological behavior of the drilling fluid, thereby meeting the requirements of the drilling of deep wells, ultra-deep wells and ultra high pressure formations.
摘要翻译： 本发明提供一种过滤控制剂和含有该过滤控制剂的钻井液。 过滤控制剂包括在180-220℃下由水，褐煤，醛和磺酸盐聚合物的反应获得的产物和在磺酸聚合物的分子链中含有磺酸基的单元为至少30重量％。 本发明提供的过滤控制剂具有良好的过滤损失降低效果和低粘度效应，可以改善钻井液的流变行为，从而满足深井，超深井和超高深度钻井的要求 压力层。
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6.发明申请MODIFIED STARCH, PREPARATION METHOD AND USE OF THE SAME, AND DRILLING FLUID 审中-公开改性淀粉，其制备方法及其用途和钻井液公开(公告)号：US20140186626A1
公开(公告)日：2014-07-03
申请号：US14031366
申请日：2013-09-19
发明人： Zhifa WANG , Zhi Yang , Yongxue Lin , Xiaohua Yang , Jiang Xu , Long Chai , Zhoujun Li , Guo Zhang , Yang Xu , Haibo Wang , Yong Kong
IPC分类号： C09K8/035
摘要： The present invention provides a modified starch, preparation method and use of the same, also provides a drilling fluid comprising the modified starch which contains bi-substituted starch structural units and tri-substituted starch structural units, wherein, the tri-substituted starch structural units are represented by the following formula (1), the bi-substituted starch structural units are the structural units represented by the following formula (2) and/or the structural units represented by the following formula (3), and the total content of the bi-substituted starch structural units and tri-substituted starch structural units accounts for 20 wt % or more of the modified starch, preferably 20-30 wt %, the weight-average molecular weight of the etherified starch is 50,000-600,000, preferably 80,000-580,000, wherein, R1, R2, and R3 are C1-C5 alkylene respectively, and M1, M2, and M3 are H, alkali metal element, or alkaline earth metal element respectively.
摘要翻译： 本发明提供了改性淀粉及其制备方法及用途，还提供了含有二取代淀粉结构单元和三取代淀粉结构单元的改性淀粉的钻井液，其中，三取代淀粉结构单元 由下式（1）表示，双取代淀粉结构单元是由下式（2）表示的结构单元和/或下式（3）表示的结构单元， 二取代淀粉结构单元和三取代淀粉结构单元占改性淀粉的20重量％或更多，优选20-30重量％，醚化淀粉的重均分子量为50,000-600,000，优选80,000- 580,000，其中R1，R2和R3分别为C1-C5亚烷基，M1，M2和M3分别为H，碱金属元素或碱土金属元素。
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