ROTARİ SONDAJ MATKAPLARININ OPTİMUM SEÇİMİ VE İŞLETİLMESİ İÇİN YENİ BİR YÖNTEM

Bu çalışmada rotari sondaj matkaplarının seçimi ve kullanımını optimize eden yeni bir yöntem tanıtılmaktadır. Çalışmanın amacı, delinebilirliğe etki eden kayaç parametreleri ile gerçek boyutlu laboratuvar delik delme çalışmaları ve yerinde arazi uygulamalarından elde edilen datalar arasında regresyon analizi ile delme hızı tahmin modellerinin geliştirilmesidir. Bu çalışmada; öncelikle kayaç örneklerinin fiziksel ve mekanik özellikleri belirlenecektir. Kayaç koşullarına uygun olan farklı üreticilerin tavsiye ettikleri gerçek boyutlu matkaplar, bu matkapların kontrollü koşullarda test edilmesine imkân tanıyan yatay sondaj makinesinde sistematik olarak test edilip; delme hızı, matkap tasarımı ve işletme parametreleri en uygun matkabı bulmak amacıyla araştırılacaktır. Yatay sondaj makinesinde baskı kuvveti ve rotasyon parametrelerinin etkisi sistematik olarak test edilebilmektedir. Elde edilen verilerin detaylı analizleri ışığında matkapların spesifik delme hızı, spesifik aşınma ve spesifik enerji tüketimi belirlenmektedir

A NEW METHOD TO OPTIMIZE THE ROTARY DRILL BIT SELECTION AND OPERATION

This paper reviews current state to the art to rotary drill bit selection and operation and also introduce a new method for optimizing this process. The research done so far are examined those are the rock properties affecting the drillability, the full scale laboratory studies, the observation of field practice and the regression analysis of this data to develop penetration rate estimation models. In the new method introduced at this paper; the physical and mechanical parameters of rock samples are firstly determined. Then, systematic drilling tests are carried out in Horizontal Drill Rig using real bits recommended by different manufacturers according to rock conditions. The relation between the penetration rate and the bit design and operational parameters are investigated to find the most suitable bit. In the light of data produced the detailed analysis are carried out to define the specific penetration rate, specific wear rate and specific energy consumption for different bits

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