Composite analysis of test-well and observation-well data during constant-head test

Yen Ju Chen*, Hund-Der Yeh

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

A constant-head test, keeping the buildup or drawdown constant in the test well, is aimed at determining the aquifer parameters. A skin zone around the wellbore due to well drilling or completion has diverse property to the aquifer. Five parameters including the transmissivities and storage coefficients for each of the skin and aquifer zones and the outer radius of the skin zone are determined via the simulated annealing approach to describe the flow system with a finite-thickness skin. Estimated results indicate that analyzing the single-well responses, i.e., test-well flow rate and observation-well drawdown data separately, is insufficient for obtaining accurate estimates for skin and aquifer parameters. Analysis of specific drawdown in an observation well gives biased results in the negative-skin case. The skin and aquifer parameters appear to be accurately determined when the flow-rate and drawdown data are analyzed sequentially or simultaneously.

原文English
主出版物標題Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009
主出版物子標題Great Rivers
頁面2014-2021
頁數8
DOIs
出版狀態Published - 26 十月 2009
事件World Environmental and Water Resources Congress 2009: Great Rivers - Kansas City, MO, United States
持續時間: 17 五月 200921 五月 2009

出版系列

名字Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
342

Conference

ConferenceWorld Environmental and Water Resources Congress 2009: Great Rivers
國家United States
城市Kansas City, MO
期間17/05/0921/05/09

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