Page 33 - 《橡塑技术与装备》2019年8期(4月下半月塑料)
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理论与研究 康永·油田用聚丙烯酰胺性能研究
analyzed by measuring its intrinsic viscosity. In addition, by changing the salt concentration, the viscosity of
polyacrylamide solution with salt content ranging from 0.1% to 1% NaCl is determined to compare its salt
tolerance. The rheology of polymer and API loss of water are measured in drilling fluid-based slurry or system.
The effects of three kinds of polyacrylamide on drilling fluid properties are compared and analyzed, and the
optimum viscosifier for drilling fluid is selected. The experimental results show that: (1) The molecular weights of
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KYPAM-1, HPAM and MICROG are 2.644×10 ,2.434×10 and 3.13×10 , respectively. (2) KYPAM-1 has the best
salt resistance. When the salt content is 0.1%, the viscosity maintains at 21.2 MPa . s, and changes little with the
increasing of salt content; HPAM has a certain salt resistance, and when the NaCl content reaches 1%, the
viscosity remains above 4 MPa . s; MICROG has poor salt resistance, and the viscosity decreases to 0 under 0.1%
NaCl. At the same concentration, the higher the molecular weight, the higher the viscosity, the better the
salt tolerance. (3) MICROG has the best performance in drilling fluid system, good thermal stability and loss-
of-consideration effect. It is a good rheological regulator of drilling fluid, but its molecular weight is about 3
million. In order to be widely used in actual drilling operations, some methods should be adopted to increase
its molecular weight or introduce some structure or group to improve its salt resistance.
Key words: polyacrylamide; viscosifier; intrinsic viscosity; molecular weight; temperature and salt
resistance; drilling fluid rheology
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美国塑料制品公司贝里 65 亿美元收购英国 RPC
US plastics company Berry acquired UK RPC for $6.5 billion
2019 年 3 月 8 日,美国塑料制造商贝里国际集团 (Berry Global Group Inc.) 宣布,将以每股 793 便士的价
格收购 RPC 集团所有已发行和即将发行的普通股。收购总价预计将达到 50 亿英镑 ( 计 65 亿美金 ),该收购价包
括对 RPC 净负债的再融资。
2019 年 1 月底, RPC 集团曾表示将出售给私募股权公司 Apollo Global Management。而 Berry 收购 RPC 股
权的平均每股 793 便士,比 Apollo 报价高 1.4%。该交易符合惯例成交条件,预计将于 2019 年第三季度初完成。
Berry Global 将以每股 793 便士的价格收购 RPC 集团所有已发行和即将发行的普通股。包括 RPC 债务,该
交易价值 65 亿美元 (57.7 亿欧元 )。
Berry Global 计划通过发行债券为购买提供资金。并打算利用合并后业务增强现金流,来快速降低杠杆率。
Berry 预计,收购交易产生约 1.5 亿美元的年度成本协同效应。
Berry 和 RPC 都是提供塑料包装产品的公司,具备高度的业务协同性和深厚的文化相容性。Berry 在收购建
议之前,今年的预期销售额将达到 81 亿美元 ( 合 72 亿欧元 ),加上 RPC48 亿美元 (42 亿欧元 ) 的年销售额,合
并后的公司年销售额预计将达 130 亿美金,在全球六大洲的员工人数将达到 48 000 名。
RPC 为包装和特定的非包装市场提供塑料和可回收产品,专注于硬塑和软包装领。RPC 在全球 33 个国家拥
有 153 家制造工厂,员工人数近 25 000 名。截止到 2018 年 9 月 30 日的过去 12 个月,RPC 集团的净销售额达
48 亿美金,调整后的息税前利润达 7.68 亿美金。
摘编自“中化新网 “
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年
2019 第 45 卷 ·15·