Simulation of wellbore flow pattern and optimization of flow pattern of simplified horizontal well in Pengshui block

WEI Ruiling; WANG Guangbiao; WEI Fengling; DUAN Chenglian; LIU Jing; WU Xiaoding

doi:10.13809/j.cnki.cn32-1825/te.2020.01.011

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Simulation of wellbore flow pattern and optimization of flow pattern of simplified horizontal well in Pengshui block
Vol. 10, Issue 1, Pages: 71-76(2020)
Published：2020
DOI： 10.13809/j.cnki.cn32-1825/te.2020.01.011
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DOI：

WEI Ruiling, WANG Guangbiao, WEI Fengling, et al. Simulation of wellbore flow pattern and optimization of flow pattern of simplified horizontal well in Pengshui block[J]. Petroleum Reservoir Evaluation and Development, 2020, 10(1): 71-76. DOI： 10.13809/j.cnki.cn32-1825/te.2020.01.011.

摘要

准确判断产水水平气井井筒流型是预测井筒生产动态、合理选取人工举升措施的关键。基于彭水区块气井实际生产情况

设计了一套可视化、可变角度的空气、水两相流动模拟实验装置

并且采用相似准则开展5种管斜角、6种气速、5种液速共150组两相流动模拟实验

归纳出4种流型类型

再分析角度、气速、液速对流型的影响：气速对垂直、倾斜管段流型影响较大

随气速的降低

流型依次表现为环状流、搅动流、段塞流;而液流速对各管段流型影响较小。最后将实验流型与文献中典型流型图板进行对比优选

确定了适用于彭水区块的两相流流型图板：垂直管AZIZ流型图+倾斜管GOULD流型图+水平管GOIVER流型图。其研究成果能有效预测井筒流态变化

为后续人工举升工艺的选取提供技术支撑。

Abstract

Accurate judgement of the wellbore flow pattern of water producing horizontal gas wells is the key to predict the wellbore production dynamics and reasonable selection of artificial lift measures. Based on the gas well production data of Pengshui block

a set of visual air-water two-phase flow simulation experimental device with variable deviation angle is designed. And the similarity criterion is used to carry out 150 groups of two-phase flow simulation experiments

including five pipe bevel angles

six gas velocities and five liquid velocities. Finally

four flow types are summarized and the influences of angle

gas velocity and liquid velocity on the convection type are analyzed. Gas velocity has a great influence on flow pattern in vertical and inclined pipe sections. With the decrease of gas velocity

flow pattern shows in turn as annular flow

agitating flow and slug flow. However

the liquid velocity has little effect on the flow pattern of each section. By comparing the experimental flow pattern with the typical flow pattern chart of the reference articals

the two-phase flow pattern chart suitable for the Pengshui block is optimized

that is

AZIZ flow pattern chart of vertical pipe + GOULD flow pattern chart of inclined pipe + GOIVER flow pattern chart of horizontal pipe. The research results can effectively predict wellbore flow pattern changes and provide technical support for the adoption of subsequent artificial lifting process.