水平井的水力特征及其解析解的适用条件

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Volume 28 Issue 5

Sep. 2003

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WAN Jun-wei, SHEN Zhong-zhi, PAN Huan-ying, 2003. Hydraulic Performance of Horizontal Well and Applicability of Its Analytical Solutions. Earth Science, 28(5): 537-544.

Citation:

WAN Jun-wei, SHEN Zhong-zhi, PAN Huan-ying, 2003. Hydraulic Performance of Horizontal Well and Applicability of Its Analytical Solutions. Earth Science, 28(5): 537-544.

WAN Jun-wei, SHEN Zhong-zhi, PAN Huan-ying, 2003. Hydraulic Performance of Horizontal Well and Applicability of Its Analytical Solutions. Earth Science, 28(5): 537-544.

Citation:

WAN Jun-wei, SHEN Zhong-zhi, PAN Huan-ying, 2003. Hydraulic Performance of Horizontal Well and Applicability of Its Analytical Solutions. Earth Science, 28(5): 537-544.

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Hydraulic Performance of Horizontal Well and Applicability of Its Analytical Solutions

Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

Received Date: 2003-05-28
Publish Date: 2003-09-25

Abstract

Abstract

Based on the hydraulic performance of horizontal well, the authors produced a grant sand tank model, by which they took horizontal well pumping testson the different flux, measured the value of the head and flux obtained from time to time, and studied its hydraulic performance. The hydraulic test of the sand tank model showed that(1)several kinds of flow regimes are presented in the horizontal well pipe during the horizontal well pumping, such as transient region of laminar flow, hydraulic smooth region, transient region of turbulent flow and hydraulic roughness region.(2)The head loss of horizontal well pipe, which is neither neglected nor linear, is closely related to the flow regime, so thatitis not perfect to describe a horizontal well-bore with the linear or square sink. The reflectance theory is used to establish the analytical model. On the linear sink basis, when only flow of laminar(Re < 2 320)or flow of laminar and transient regions of laminar flow(Re < 4 000)are presented in the horizontal well pipe, the analytical solution is approaching the test data. However, when flow of laminar, flow of laminar and transient regions of laminar flow, hydraulic smooth region, and transient region of turbulent flow or hydraulic roughness region(Re < 4 000)occur, the analytical solution is not applicable. Then a new combined mathematical model of flow should be used in an aquifer-horizontal well system to obtain a solution.
- horizontal well,
- sand tank model,
- flow regime,
- flow resistance,
- analytical solution

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References(32)

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