Combined Percussive-Rotary Drilling to Increase Rate of Penetration and Life of Drill Bit in Drilling Hard Rock Formation
- Authors: Zha C.1, Liu G.2, Li J.1, Li Y.1, Xi Y.1, Guo B.3
-
Affiliations:
- College of Petroleum Engineering, China University of Petroleum
- Beijing University of Technology
- University of Louisiana at Lafayette
- Issue: Vol 53, No 2 (2017)
- Pages: 254-262
- Section: Article
- URL: https://journals.rcsi.science/0009-3092/article/view/234926
- DOI: https://doi.org/10.1007/s10553-017-0802-x
- ID: 234926
Cite item
Abstract
It is generally recognized that stick-slip motion of polycrystalline diamond compact (PDC) bits is responsible for the low rate of penetration (ROP) and premature wearing of drill bits while drilling hard rock formations. An innovative tool designated combined percussion jet (CPJ) was developed in this work to solve the problem. Because the tool generates both axial and torsional percussion, drilling with CPJ is referred as combined percussion-rotary drilling approach (CPRDA). The results of dynamics modeling and stress computation showed that the CPRDA induces more shear stresses in rock formations compared to axial percussion drilling and axial percussion-rotary drilling. The CPRDA was tested on two wells drilled in hard rock formation. The results demonstrated that the CPRDA increased ROP by 56.1-60.4% and extended drill bit life. However, for solving the high stress problem, the tool needs to be optimized further.
Keywords
About the authors
Chunqing Zha
College of Petroleum Engineering, China University of Petroleum
Author for correspondence.
Email: chachunqing@163.com
China, Beijing
Gonghui Liu
Beijing University of Technology
Email: chachunqing@163.com
China, Beijing
Jun Li
College of Petroleum Engineering, China University of Petroleum
Email: chachunqing@163.com
China, Beijing
Yumei Li
College of Petroleum Engineering, China University of Petroleum
Email: chachunqing@163.com
China, Beijing
Yan Xi
College of Petroleum Engineering, China University of Petroleum
Email: chachunqing@163.com
China, Beijing
Boyun Guo
University of Louisiana at Lafayette
Email: chachunqing@163.com
United States, Lafayette, LA