Research and application of PDC bit for geothermal drilling in high temperature hard rock in Tianyang Basin

WANG Yongjun; NIE Dejiu; YUAN Baohong; YUAN Baoxin; ZHAO Changliang; ZHANG Tao; LIU Zhenxin

doi:10.12143/j.ztgc.2024.06.016

2024 Vol. 51, No. 6

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Article navigation > DRILLING ENGINEERING > 2024 > 51(6): 125-131

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WANG Yongjun, NIE Dejiu, YUAN Baohong, YUAN Baoxin, ZHAO Changliang, ZHANG Tao, LIU Zhenxin. 2024. Research and application of PDC bit for geothermal drilling in high temperature hard rock in Tianyang Basin. DRILLING ENGINEERING, 51(6): 125-131. doi: 10.12143/j.ztgc.2024.06.016

Citation:

WANG Yongjun, NIE Dejiu, YUAN Baohong, YUAN Baoxin, ZHAO Changliang, ZHANG Tao, LIU Zhenxin. 2024. Research and application of PDC bit for geothermal drilling in high temperature hard rock in Tianyang Basin. DRILLING ENGINEERING, 51(6): 125-131. doi: 10.12143/j.ztgc.2024.06.016

Research and application of PDC bit for geothermal drilling in high temperature hard rock in Tianyang Basin

1. The Second Hydrogeology and Engineering Geology Brigade of Shandong Provincial Bureau of Geological Survey (Lubei Geological Engineering Survey Institute of Shandong Province ), Dezhou Shandong 253072, China;
2. Shandong Engineering Technology Research Center for Geothermal Clean Energy Exploration and Reinjection, Dezhou Shandong 253072, China;
3. 273 Geological Brigade of Shandong Nuclear Industry, Yantai Shandong 264006, China;
4. Drilling Engineering Technology Research Center of Shandong Bureau of Geology and Mineral, Yantai Shandong 264004, China

More Information

Corresponding author: NIE Dejiu

Received Date: 08 April 2024

Revised Date: 28 May 2024

Abstract

Abstract

In the drilling construction of high-temperature geotherm in the Tianyang Basin,affected by the lithology and high temperature of the hard rock strata of the metamorphic rock system,the cone bit has low mechanical drilling efficiency,serious wear,and short service life,which seriously affects the drilling construction. As a result,the application of PDC bit was explored. Aimed at the lithological characteristics,the key technologies such as the selection and layout of bit body,blade,profile and composite pieces were explored and optimized in drilling practice. A PDC bit with good impact resistance and suitable for metamorphic hard rock formations is developed,which effectively improves the mechanical drilling speed and reduces the drilling cost,which provides technical support for the smooth implementation of the high-temperature geothermal drilling project in the Tianyang Basin.
- high-temperature hard rock /
- geothermal drilling /
- PDC bit /
- composite sheet selection and layout

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References

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