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首页> 外文期刊>SPE production & operations >Correlations To Predict Frictional Pressure Loss of Hydraulic-Fracturing Slurry in Coiled Tubing
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Correlations To Predict Frictional Pressure Loss of Hydraulic-Fracturing Slurry in Coiled Tubing

机译：预测连续油管中压裂泥浆摩擦压力损失的相关性

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摘要

Compared with conventional-tubing fracturing, coiled-tubing (CT) fracturing has several advantages. CT fracturing has become an effective stimulation technique for multizone oil and gas wells. It is also an attractive production-enhancement method for multi-seam coalbed-methane wells, and wells with bypassed zones. The excessive frictional pressure loss through CT has been a concern in fracturing. The small diameter of the string limits the cross-sectional area open to flow. Furthermore, the tubing curvature causes secondary flow and results in extra flow resistance. This increased frictional pressure loss results in high surface pumping pressure. The maximum possible pump rate and sand concentration, therefore, have to be reduced. To design a CT fracturing job properly, it is essential to predict the frictional pressure loss through the tubing accurately.
机译：与常规油管压裂相比，连续油管（CT）压裂具有多个优势。 CT压裂已成为多区油气井的有效增产技术。对于多煤层煤层气井和带旁路区的井，这也是一种有吸引力的增产方法。通过CT造成的过度摩擦压力损失一直是压裂中的一个问题。细绳的小直径限制了开放流通的截面积。此外，管道曲率会引起二次流动并导致额外的流动阻力。这种增加的摩擦压力损失导致较高的表面泵送压力。因此，必须降低最大可能的泵速和沙子浓度。为了正确设计CT压裂作业，必须准确预测通过油管的摩擦压力损失。

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