Open AccessSimulation and Filed Test on Dynamic Formation Mechanism of the Rotary Percussion Drilling Tool
Author(s) -
Mingxin Ma,
Zongzheng Tian
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/514/2/022046
Subject(s) - drilling , percussion , mechanism (biology) , rate of penetration , enhanced data rates for gsm evolution , dynamical friction , dynamic simulation , mechanical engineering , dynamic pressure , static friction , drilling fluid , dynamic testing , flow (mathematics) , engineering , geology , structural engineering , simulation , mechanics , materials science , aerospace engineering , acoustics , composite material , telecommunications , philosophy , physics , epistemology
Rotary percussion drilling tool can effectively improve the drilling speed in the hard formation. However, due to the impact of drilling fluid, the erosion of the dynamic and static valve disc is serious, which can reduce the impact effect. In this paper, the flow field characteristics and erosion characteristics of the dynamic forming mechanism are analyzed by numerical simulation and test, while the dynamic and static valve disc of dynamic formation mechanism is improved, which is verified by field test. The results show that the pressure from the entrance to the surrounding walls is higher and higher. The maximum velocity of drilling fluid is distributed near the edge of the outlet. The study will provides theoretical and technical guidance for increasing tool life and rate of penetration in hard formations.