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    • 7. 发明授权
    • Well fluids based on low viscosity synthetic hydrocarbons
    • 基于低粘度合成烃的井液
    • US5691281A
    • 1997-11-25
    • US321006
    • 1994-10-06
    • Henry AshjianSuzzy C. HoMargaret M. Wu
    • Henry AshjianSuzzy C. HoMargaret M. Wu
    • C07C5/25C09K8/34C09K7/02C09K7/06
    • C09K8/34C07C5/2518C07C2529/06
    • Solid, waxy 1-olefins may be converted to low viscosity liquid products by carrying out a double bond isomerization in the presence of a solid acidic catalyst such as an acidic clay or a zeolite under mild conditions. The olefin isomer products are useful in the formulation of well fluids such as drilling muds, especially useful in offshore drilling. The preferred oils for making up the well fluids are formulated with a hydrocarbon oil blend of the low viscosity olefin isomer together with a C.sub.12 to C.sub.18 paraffinic hydrocarbon of petroleum origin and a C.sub.10 to C.sub.32 olefin such as tetradecene-1. The fluids exhibit good biodegradability and are non-toxic to marine organisms; they also meet viscosity and pour points specifications for formulation into oil based muds.
    • 固体蜡状1-烯烃可以在温和条件下在固体酸性催化剂如酸性粘土或沸石的存在下进行双键异构化而转化为低粘度液体产物。 烯烃异构体产物可用于诸如钻井泥浆的井液制备,特别适用于海上钻井。 用于制备井液的优选油用低粘度烯烃异构体的烃油共混物与石油来源的C 12至C 18链烷烃和诸如十四碳烯-1的C 10至C 32烯烃一起配制。 液体表现出良好的生物降解性,对海洋生物无毒; 它们也符合粘度和倾点规格,用于配制成油基泥浆。