Scholarly record
DEVELOPMENT OF A COMBINED SPUD BIT FOR DRILLING TECHNOLOGICAL WELLS IN KAZAKHSTAN
Abstract
The development of efficient drilling tools tailored to the unique geological conditions of Kazakhstan's drilling sites is paramount for optimizing well construction operations. This study focuses on the design, fabrication, and evaluation of a combined spud bit specifically engineered for drilling technological wells in Kazakhstan. The combined spud bit integrates both polycrystalline diamond compact (PDC) and carbide cutters within a single robust structure to enhance drilling performance across a diverse range of rock formations. It is an annular housing with stepped weapons, and a pilot is attached to the lower end of the housing, at the end of which alternating weapons are placed: a carbide cutter-PDC cutter. Mixed stepped blades equipped with weapons are welded onto the side surface of the annular pilot with their transverse direction towards the face. The main design solution is to raise the blades of carbide cutters above the edges of the blades of PDC cutters, i.e. the former are located closer to the face than the latter. This makes it possible to work out initially carbide cutters when the face is destroyed. In addition, the latter are located further from the axis of rotation of the tool and will have greater wear resistance. As drilling progresses, the height of the carbide cutter edges decreases and, finally, their height becomes equal to the height of the PDC cutter edges. As a result, the speed of deepening the well to the design depth increases sharply. The findings of this study contribute valuable insights into the development of advanced drilling technologies tailored to Kazakhstan's geological challenges, with implications for improved well construction practices and resource extraction efficiency
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- CrossRef - Citation Indexes: 4
- Scopus - Citation Indexes: 5
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Publication details
References19
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Number of times cited according to Crossref: 4
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