Investigation of the Variation in Well Performance over Time Using Step Drawdown Tests

Abstract

The purpose of this study is to investigate the variation in well performance over years by performing step drawdown test. The well used in this study was drilled by Neojen Engineering in the unconfined aquifer in Bursa Küçük Sanayi region and is 27 meters deep. The first step drawdown test was carried out on November 2, 2012. The test was repeated on March 23, 2017 in the same well. The step drawdown test data obtained from the field study were solved by the Hantush-Bierschenk and Rorabaugh analytical methods and the well performance parameters were obtained. The change in well efficiency and specific capacity were investigated between the dates of the two tests. Suggestions are presented to increase the well performance.

Keywords

• Pumping well,Step drawdown test,Well efficiency

KADEMELİ POMPALAMA TESTLERİ İLE KUYU PERFORMANSININ ZAMAN İÇİNDE DEĞİŞİMİNİN İNCELENMESİ

Abstract

Bu çalışmanın amacı, kademeli pompalama testi ile kuyu performansının yıllar içerisindeki değişimini incelemektir. Çalışmada Neojen Mühendislik tarafından Bursa Küçük Sanayi bölgesindeki basınçsız akiferde açılan 27 metre derinliğindeki kuyu kullanılmıştır. İlk olarak 2 Kasım 2012 tarihinde bir adet kademeli pompalama testi yapılmıştır. Kademeli pompalama testi, aynı kuyuda 23 Mart 2017 tarihinde tekrar yapılmıştır. Arazi çalışması sonucu elde edilen kademeli pompalama test verileri Hantush-Bierschenk analitik metoduyla çözülüp kuyu performans parametreleri elde edilmiştir. İki testin uygulandığı tarih arasında kuyu verimindeki ve özgül kapasitedeki değişim incelenmiştir. Kuyu performansının artırılması için öneriler sunulmuştur.

Keywords

• Kuyu verimi,Kademeli pompalama testi,Pompaj kuyusu,Kuyu verimi

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