A5033899582- Tunneling and Rock Mechanics
- Drilling and Well Engineering
- Geotechnical and Geomechanical Engineering
- Landslides and related hazards
- Electrospun Nanofibers in Biomedical Applications
- Geotechnical Engineering and Underground Structures
- Oil and Gas Production Techniques
- Rock Mechanics and Modeling
- Geotechnical Engineering and Soil Mechanics
PetroChina Southwest Oil and Gas Field Company (China)
2021-2023
Southwest Petroleum University
2021-2023
Hohai University
2023
Jiangsu University of Science and Technology
2023
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2021
Abstract Vibro-impact drilling has been proven to be a viable technique for enhancing the rate of penetration (ROP) in deep and ultra-deep well drilling. It is essential study effects impact parameters on energy rock-drilling efficiency tool design operating parameter optimization. In this paper, influences including frequency, dynamic loading amplitude, were analyzed by theoretical method. Then, full-scale experiment was conducted efficiency. The results are as follows: optimal frequency...
Drilling technologies based on oil-based drilling fluids and strong inhibitory saltwater are affected by drawbacks such as downhole accidents where sticking wellbore instabilities occur. Existing polyamine also exhibit problems easy decomposition poor inhibition performances. In order to mitigate these issues, additives can be used, inhibitors the synthesis of nanometer filtrate reducers. Tests conducted in frame this study with a fluid show that has same inhibitory, plugging, lubricating,...
In order to study the effect of wall thickness on penetration process steel cylinders, we carried out physical tests and numerical simulations cylinders with different thicknesses in sandy soil foundations, focusing analyzing force uplift during cylinders. The results show that coupled Eulerian-Lagrangian (CEL) approach can be used simulate During thicknesses, relationship between depth approximated by a quadratic function. larger is, plug volume inside cylinder penetration. research provide...
In recent years, the high impact resistance of ridged PDC cutters has made them widely used in hard heterogeneous formations. However, theoretical studies on are still lacking. this paper, we conduct linear cutting tests and found that surface cutter can prevent accumulation compaction rock debris, which significantly reduces force mechanical specific energy (MSE), thereby increasing efficiency. Then, when analysed vibration amplitude, frequency rate change load simulation, approximate...
In recent years, non-planar PDC cutters such as ridged cutter have been effectively and widely applied in hard heterogeneous formations. However, the theoretical studies on optimization of cutting surface are still lacking. this paper, we conduct linear tests using three types cutters, i.e., axe-shaped, axe-tip, planar cutters. It is found that force considerably lower than The experiments show unique can prevent accumulation compaction cuttings, which significantly reduces axial force,...