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发明授权
US4840292A Method and apparatus for dispensing oil well proppant additive 失效
油井支撑剂添加剂的分配方法和装置

Method and apparatus for dispensing oil well proppant additive
摘要：
An apparatus for dispensing an additive (70) into a stream (14) of well proppant includes a sealed housing (42), (44), (52) containing a first chamber (102), a second chamber (104), and an additive dispenser (64), (72) operably connected to a motor (92). The upper chamber (102) is adapted to contain the additive (70), and the lower chamber (104) communicated with the pressurized well proppant stream (14). The additive dispensing means (64), (72) is disposed between the upper chamber (102) and the lower chamber (104). Pressure equalizing tubes (98 and 99) within said housing (42), (44), (52) extend from the upper chamber (102) through the additive dispenser (64), (72) to the lower chamber (104) to equalize the fluid pressure existing in the lower chamber (104) with the fluid pressure existing in the upper chamber (102) during the dispensing of the additive ( 70) from the upper chamber (102) to the lower chamber (104). In the preferred embodiment the additive dispenser (64), (72) consists of a screw or auger (72) disposed within an auger ring (64), and the additive (70) flows through the additive dispenser (64), (72) to the lower chamber (104) under the force of gravity. Where the additive (70) consists of radioactive sand used as a tracer for well logging purposes, the apparatus may be provided with an electrical power end control circuit (106) to remotely control the dispensing of radioactive sand (70).
摘要（中）：

用于将添加剂（70）分配到井支撑剂的料流（14）中的装置包括密封壳体（42），（44），（52），其包含第一室（102），第二室（104）和 添加剂分配器（64），（72），可操作地连接到马达（92）。 上室（102）适于容纳添加剂（70），下室（104）与加压井支撑剂流（14）连通。 添加剂分配装置（64），（72）设置在上室（102）和下室（104）之间。 在所述壳体（42），（44），（52）内的压力均衡管（98和99）从上室（102）通过添加剂分配器（64），（72）延伸到下室（104） 在从上室（102）到下室（104）分配添加剂（70）期间，存在于下室（104）中的流体压力具有存在于上室（102）中的流体压力。 在优选实施例中，添加剂分配器（64）（72）由设置在螺旋钻环（64）内的螺杆或螺旋钻（72）组成，并且添加剂（70）流过添加剂分配器（64），（72） 在重力作用下向下腔室（104）传递。 当添加剂（70）由用作测井目的的示踪剂的放射性砂组成时，该装置可以设置有电力端控制电路（106），以远程控制放射性砂（70）的分配。

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