彭水区块水平井简化全井段流态模拟及流型图版优选

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

Abstract

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.

Key words: Pengshui block, horizontal well, two-phase tube flow, experiment, flow pattern

CLC Number:

TE33

WEI Ruiling,WANG Guangbiao,WEI Fengling,DUAN Chenglian,LIU Jing,WU Xiaoding. Simulation of wellbore flow pattern and optimization of flow pattern of simplified horizontal well in Pengshui block[J].Reservoir Evaluation and Development, 2020, 10(1): 71-76.

Figures/Tables 10

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References 22

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液速/（m·s^-1）	气速/（m·s^-1）	实验观测流型
液速/（m·s^-1）	气速/（m·s^-1）	90°	75°	45°	15°	0°
0.01	1	段塞流	段塞流	段塞流	段塞流	分层流
	7	搅动流	搅动流	段塞流	段塞流	分层流
	13	搅动流	搅动流	搅动流	环状流	分层流
	19	环状流	环状流	搅动流	环状流	分层流
	22	环状流	环状流	环状流	环状流	环状流
	25	环状流	环状流	环状流	环状流	环状流
0.05	1	段塞流	段塞流	段塞流	段塞流	分层流
	7	搅动流	搅动流	搅动流	段塞流	分层流
	13	搅动流	搅动流	搅动流	环状流	分层流
	19	环状流	环状流	搅动流	环状流	环状流
	22	环状流	环状流	搅动流	环状流	环状流
	25	环状流	环状流	环状流	环状流	环状流
0.1	1	段塞流	段塞流	段塞流	段塞流	分层流
	7	搅动流	搅动流	搅动流	段塞流	分层流
	13	搅动流	搅动流	搅动流	环状流	分层流
	19	环状流	搅动流	搅动流	环状流	环状流
	22	环状流	环状流	环状流	环状流	环状流
	25	环状流	环状流	环状流	环状流	环状流
0.2	1	段塞流	段塞流	段塞流	段塞流	分层流
	7	搅动流	搅动流	搅动流	段塞流	分层流
	13	搅动流	搅动流	环状流	环状流	分层流
	19	环状流	环状流	环状流	环状流	环状流
	22	环状流	环状流	环状流	环状流	环状流
	25	环状流	环状流	环状流	环状流	环状流
0.4	1	段塞流	段塞流	段塞流	段塞流	分层流
	7	搅动流	搅动流	环状流	段塞流	分层流
	13	搅动流	搅动流	环状流	环状流	分层流
	19	环状流	环状流	环状流	环状流	环状流
	22	环状流	环状流	环状流	环状流	环状流
	25	环状流	环状流	环状流	环状流	环状流

管段类型	实验数据点	模型	超出预测范围数据点	预测范围内准确度/%
垂直管段（90°）	30	DUNS-ROS	21	30.00
		HWITT	12	60.00
		AZIZ	2	93.33
		GOULD	13	56.67
倾斜管段（45°）	30	GOULD	7	76.67
水平管段（0°）	30	GOIVER	3	90.00
水平管段（0°）	30	MANDHANE	7	76.67

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

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