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    • 7. 发明申请
    • EXCAVATING HEAD
    • 排除头
    • WO2016142910A1
    • 2016-09-15
    • PCT/IB2016/051387
    • 2016-03-11
    • PALMIERI S.P.A.
    • PALMIERI, Silvano
    • E21B7/00E21B10/08
    • E21B7/00E21B10/08
    • The excavating head (1) comprises: an attachment element (2) to a driving machine to place the head (1) in rotation; a plate-shaped body (7) having a first main face (8) and a second main face (9), the first main face (8) being facing to the excavation front and the second main face (9) being opposite to the first main face (8) and connected to the attachment element (2); at least an excavation tool (10) associated with the plate-shaped body (7) so as to protrude at least in part from the first main face (8); and suction means (13) of the excavated material associated with said plate- shaped body (7) and comprising: a plurality of through openings (14, 15) and crossing the plate-shaped body (7) between the first main face (8) and the second main face (9); and a hood-shaped element (17) having a suction mouth (18) adjacent to the second main face (9) and surrounding the through openings (14, 15).
    • 挖掘头(1)包括:安装元件(2)到驱动机器以使头部(1)旋转; 具有第一主面(8)和第二主面(9)的板状体(7),所述第一主面(8)面向所述挖掘前部,所述第二主面(9)与所述第一主面 第一主面(8)并连接到附接元件(2); 至少与所述板状体(7)相关联的挖掘工具(10),以至少部分地从所述第一主面(8)突出; 以及与所述板状体(7)相关联的挖掘材料的抽吸装置(13),并且包括:多个通孔(14,15),并且在第一主面(8)之间穿过板状体 )和第二主面(9); 以及具有与所述第二主面(9)相邻并且围绕所述通孔(14,15)的吸嘴(18)的罩形元件(17)。
    • 10. 发明申请
    • METHODS FOR DETERMINING RHEOLOGICAL QUANTITIES OF A DRILLING FLUID USING APPARENT VISCOSITY
    • 使用安全粘度测定钻井液流变数量的方法
    • WO2016099536A1
    • 2016-06-23
    • PCT/US2014/071381
    • 2014-12-19
    • HALLIBURTON ENERGY SERVICES, INC.
    • JAMISON, Dale E.
    • E21B21/06E21B21/08
    • G01N11/14E21B7/00E21B21/08E21B47/00E21B47/06E21B47/065E21B49/08E21B2049/085
    • Rheological quantities, such as shear stress, can sometimes be difficult to determine under extreme temperature and pressure conditions. In contrast, the relative rheology of a fluid can often be readily determined over a range of temperature and pressure conditions. The relative rheology can then be used to scale a rheological quantity of the fluid to a given temperature and pressure condition. Methods for scaling a rheological quantity can comprise: measuring an apparent viscosity of a drilling fluid at first, second and third reference temperature and pressure conditions; determining a rate of change in apparent viscosity with respect to temperature at a substantially equal pressure; determining a rate of change in apparent viscosity with respect to pressure at a substantially equal temperature; and scaling a rheological quantity from an initial set of temperature and pressure conditions to a final set of temperature and pressure conditions using the rates of change.
    • 在极端的温度和压力条件下,有时难以确定流变量,如剪切应力。 相比之下,流体的相对流变学通常可以容易地在温度和压力条件的范围内确定。 然后可以使用相对流变学来将流体的流变量缩放到给定的温度和压力条件。 缩放流变量的方法可以包括:在第一,第二和第三参考温度和压力条件下测量钻井液的表观粘度; 确定在基本上相等的压力下相对于温度的表观粘度的变化率; 确定在基本相等的温度下相对于压力的表观粘度的变化率; 并使用变化率将流变量从初始温度和压力条件集合缩放到最终的温度和压力条件集合。