Downhole well lubricant
    24.
    发明授权
    Downhole well lubricant 失效
    井下润滑油

    公开(公告)号:US5700767A

    公开(公告)日:1997-12-23

    申请号:US531795

    申请日:1995-09-21

    Inventor: Ernest K. Adams

    CPC classification number: C09K8/22 C09K8/12 C09K2208/02 C09K2208/34

    Abstract: A downhole well lubricant includes at least about 50#/bbl of a surfactant, preferably at least about 10#/bbl of a viscosifier, the balance being about 20-50% filming amine, 20-80% activator, balance being a diluent. The activator is VARSOL, coconut oil, terpene, xylene, mineral oil, turpentine, d-limonene and mixtures thereof. The surfactant is a stearate, preferably aluminum stearate, and the viscosifier is an oil compatible bentonite or polyacrylamide polymer. The resultant product is a thin pigmented solution of low viscosity. When the lubricant is dispersed in a water based drilling or completion fluid, the filming amine is attracted to and coats metal in the well. When the metal rubs against anything, such as coiled tubing rubbing against the side of the production string, a lubricious emulsion is created on the metal at locations where it is rubbing against something.

    Abstract translation: 井下孔润滑剂包括至少约50#/ bbl的表面活性剂,优选至少约10#/ bbl的增粘剂,余量为约20-50%的成膜胺,20-80%的活化剂,余量为稀释剂。 活化剂是VARSOL,椰子油,萜烯,二甲苯,矿物油,松节油,d-柠檬烯及其混合物。 表面活性剂是硬脂酸盐,优选硬脂酸铝,并且增粘剂是与油相容的膨润土或聚丙烯酰胺聚合物。 所得产物是低粘度的薄着色溶液。 当润滑剂分散在水基钻井或完井液中时,成膜胺被吸引到井中并涂覆在金属中。 当金属摩擦任何东西,例如连续管道摩擦生产线的一侧时,在金属上摩擦某物的地方产生润滑乳液。

Patent Agency Ranking