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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >RHEOLOGICAL AND HYDRAULIC PROPERTIES OF DRILLING, COMPLETION, AND STIMULATION FLUIDS IN STRAIGHT AND COILED TUBINGS
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RHEOLOGICAL AND HYDRAULIC PROPERTIES OF DRILLING, COMPLETION, AND STIMULATION FLUIDS IN STRAIGHT AND COILED TUBINGS

机译：直管和直管的钻井液，完井液和增稠液的流变学和液压性能

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摘要

The rheological properties and friction pressure losses of several fluids that are most commonly used as well drilling, completion, and stimulation fluids have been investigated experimentally. These fluids include polymeric fluids -Xanthan gum, partially hydrolyzed polyacrylamide (PHPA), guar gum, and hydroxyethyl cellulose (HEC), bentonite drilling mud, oil-based drilling mud, and guar-based fracturing slurries. Rheological measurements using a Bohlin CS 50 rheometer and a model 35 Fann viscometer showed that these fluids exhibit shear thinning and thermal thinning behavior except the bentonite drilling mud whose viscosity increased as the temperature was raised. Flow experiments using a full-scale coiled tubing test facility showed that the friction pressure loss in coiled tubing is significantly higher than in straight tubing. Since the polymeric fluids displayed drag reducing property, their drag reduction behavior in straight and coiled tubings was analyzed and compared. It was found that the drag reduction (DR) in coiled tubing is much lower than that in straight tubing. Plots of drag reduction vs. generalized Reynolds number indicate that the drag reduction in coiled tubing was not affected by polymer concentration as much as in straight tubing. The onsets of turbulence and drag reduction in coiled tubing were significantly delayed as compared with straight tubing. The effect of solids content on the friction pressure losses in coiled tubing is also briefly discussed.
机译：已通过实验研究了几种最常用的钻井，完井和增产液的流变特性和摩擦压力损失。这些流体包括高分子流体-黄原胶，部分水解的聚丙烯酰胺（PHPA），瓜尔豆胶和羟乙基纤维素（HEC），膨润土钻探泥浆，油基钻探泥浆和瓜尔胶基压裂泥浆。使用Bohlin CS 50流变仪和35型Fann粘度计进行的流变学测量表明，这些流体表现出剪切稀化和热稀化行为，但膨润土钻探泥浆的粘度随温度升高而增加。使用全尺寸连续油管测试设备进行的流量实验表明，连续油管中的摩擦压力损失明显高于直管。由于聚合物流体显示出减阻性能，因此分析和比较了它们在直管和连续油管中的减阻性能。结果发现，连续油管的减阻（DR）远低于直管的减阻。减阻与广义雷诺数的关系图表明，与直管相比，连续油管的减阻不受聚合物浓度的影响大。与直管相比，连续管的紊流和减阻作用明显延迟。还简要讨论了固含量对连续油管中摩擦压力损失的影响。

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