...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemical and Petroleum Engineering >ANALYSIS OF SCROLL-CENTRIFUGE EFFICIENCY FOR CLEANING OF DRILLING MUDS
【24h】

ANALYSIS OF SCROLL-CENTRIFUGE EFFICIENCY FOR CLEANING OF DRILLING MUDS

机译：钻井泥浆清洁的离心力效率分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Preliminary assessment of the efficiency of facilities for cleaning drilling mud of drilled rock, especially the more expensive facilities - centrifuges - is critical to the design stage of well construction. The development of computational rela- tionships that make it possible to predict the cleaning capacity 9 provided by centrifuges (the ratio of the volume of the solid phase removed from the drilling mud by the centrifuge to the total volume of solid phase contained in the mud prior to cen-trifuging) is urgent in this connection. Let us examine the design diagram of the flow of drilling mud in the rotor of a scroll centrifuge (Fig. 1), where rapidly rotating hollow cylindrical-conical rotor 8, slurry collector 3, cleaned-mud collector 7, and screw conveyer 2 are shown. A minimal gap is established between conveyer flight 4 and the internal wall of the rotor. The mud, which contains drilled rock and which is subject to cleaning, proceeds into the centrifuge via pipe 5. The mud is discharged through window 1 into the space between the conveyer drum and rotor 8, where it moves toward overflow board 6. Movement of the mud occurs in a closed spiral channel with a rectangular section. The channel is formed by the flights and drum of conveyer 2, and also by the internal surface of rotor 8. As the drilling mud flows from window 1 to board 6, particles of drilled rock settle onto the internal surface of the rotor under centrifugal force. Since the conveyer is rotating slowly with respect to the rotor, it transports the settled rock to the conical section of the rotor, and thereafter discharges it through the narrow end of the rotor into sediment collector 3. The mud, which has been cleaned of rock, overflows sideboard 6, and proceeds into collector 3 from where it is returned to the circulation system of the drilling rig.
机译：初步评估清理岩石钻探泥浆的设备的效率，尤其是较昂贵的设备（离心机），对井的设计阶段至关重要。计算关系的发展，使得可以预测离心机提供的清洁能力9（离心机从钻探泥浆中除去的固相体积与之前泥浆中所含固相总体积之比）。在这方面迫切需要）。让我们检查一下涡旋离心机转子（图1）中钻探泥浆的流动设计图，在该转子中，快速旋转的空心圆柱转子8，泥浆收集器3，清洁泥浆收集器7和螺旋输送机2组成。如图所示。在输送机刮板4和转子的内壁之间建立了最小的间隙。包含钻孔岩石并经过清洗的泥浆通过管道5进入离心机。泥浆通过窗口1排入输送机滚筒和转子8之间的空间，并在此向溢流板6移动。泥浆出现在具有矩形截面的封闭螺旋通道中。该通道是由输送机2的刮板和转鼓以及转子8的内表面形成的。随着钻探泥浆从窗口1到板6的流动，在离心力的作用下，钻出的岩石颗粒沉降到转子的内表面。由于输送机相对于转子缓慢旋转，因此将沉降的岩石输送到转子的圆锥形部分，然后通过转子的狭窄端将其排入沉淀物收集器3。已清除了岩石的泥浆侧板6溢流，进入收集器3，从收集器3返回到钻机的循环系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号