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ZWITTERIONIC POLYMERS COMPRISING BETAINE-TYPE UNITS AND USE OF ZWITTERIONIC POLYMERS IN DRILLING FLUIDS
ZWITTERIONIC POLYMERS COMPRISING BETAINE-TYPE UNITS AND USE OF ZWITTERIONIC POLYMERS IN DRILLING FLUIDS
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机译:包含牛磺酸型单元的两性离子聚合物及其在钻井液中的使用
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摘要
The invention relates to novel polymers comprising betaine-type units and to the use of zwitterionic polymers in drilling fluids, for example, as a clay swelling inhibitor and/or as an accretion-inhibiting agent and/or as a fluid-rheology-controlling agent and/or a filtrate-reducing agent and/or a lubricant.
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