Foamable drilling fluid
    1.
    发明公开
    Foamable drilling fluid 失效
    SchäumbareBohrflüssigkeit

    公开(公告)号:EP0761798A1

    公开(公告)日:1997-03-12

    申请号:EP96306495.1

    申请日:1996-09-06

    CPC classification number: B01F17/0085 C09K8/22 C09K8/38

    Abstract: A foamable drilling fluid for use in well operations such as deep water offshore drilling where risers are not employed in returning the fluid to the surface mud pit, comprises a prehydrated clay such as bentonite; water; a surfactant selected from α-olefinsulfonates, alkylpolyglycosides, alcohol sulfates and salts of ethoxylated alcohol sulfates; and a stabilizing surfactant such as cocoamine betaine. The drilling fluid can also contain an hydraulic material selected from Portland cement, siliceous material like fumed silica, blast furnace slag and pozzolans such as fly ash.

    Abstract translation: 用于井作业的可发泡钻井液,例如深水海上钻井,其中不使用立管将流体返回到地表泥坑,包括预水泥粘土例如膨润土; 水; 选自α-烯烃磺酸盐,烷基多糖苷,醇硫酸盐和乙氧基化醇硫酸盐的表面活性剂; 和稳定表面活性剂如椰油胺甜菜碱。 钻井液还可以包含选自波特兰水泥,硅质材料如煅制二氧化硅,高炉矿渣和火山灰如飞灰的水硬材料。

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