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考虑井壁径向流入的大位移井井筒压降计算
引用本文:曾祥林,林玲,杜志敏,何冠军.考虑井壁径向流入的大位移井井筒压降计算[J].西南石油学院学报,2002,24(6):40-43.
作者姓名:曾祥林  林玲  杜志敏  何冠军
作者单位:[1]西南石油学院研究生院,四川南充637001 [2]西南石油学院
摘    要:根据大位移进井筒流动特征,应用质量守衡,动量守衡原理建立了考虑井壁流体径向流入的任意倾角的大位移井筒压降计算模型。普通水平管内单相液流压降模型和Dikken的压降模型是所建模型的特例,在井筒为单相层流、紊流的情况下,对考虑了井壁流体流入的摩擦系数进行了分析讨论,对不同井长和井产量用实例分别计算了单相流情况下井筒的压力分布和压降,计算结果表明,在井筒较长,井产量较高时,不能忽略井筒压力降。

关 键 词:井壁  径向流入  大位移井  井筒压降  计算  摩阻系数  油气井
文章编号:1000-2634(2002)06-0040-04
修稿时间:2002年3月21日

Wellbore Pressure Drop Calculation Considering the Radial Inflow Through Wall in the Extended Reach Well
ZENG Xiang-lin.Wellbore Pressure Drop Calculation Considering the Radial Inflow Through Wall in the Extended Reach Well[J].Journal of Southwest Petroleum Institute,2002,24(6):40-43.
Authors:ZENG Xiang-lin
Abstract:According to the characters of wellbore flow in the extended reach well, wellbore pressure drop calculation model considering radial inflow through wall in the extended reach well with arbitrary dip angle was established by using the principle of mass conservation and momentum conservation. The calculation model about monophasic fluid pressure drop in the ordinary horizontal pipe and the Dikken's pressure drop model are special examples of the model set up in this paper. Under the condition of laminar or turbulent flow in the wellbore, the wall friction factor considering inflow through wall was analyzed and discussed. As an applied example, the pressure distribution and pressure drop along the well bore of varying well-length and well production in the case of single-phase flow in the wallbore was calculated. The result of calculation shows that the pressure drop in the long well bore and high production can not be neglected.
Keywords:extended reach well  radial inflow  wellborn pressure drop  friction factor
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