2014 - maintenantParticipate in the development of different modules of DrillScan Software:
• Drill-string Torque & Drag & Buckling model:
+ Soft-string TnD; Stiff-string TnD; Buckling.
+ Knuckle-joint behavior on drill-string in well (Snake completion): algorithm using stiff TnD model.
+ Bow Spring Centralizer: algorithm using stiff TnD model.
+ New hydraulic charges in drill-string TnDnB calculation: Pressure area load; Fluid movement loads on drill-string
• Drilling Hydraulic: Pressure loss; Surge and Swab Pressure.
• Casing wear model:
+ Calculation Step by Step.
+ 3D casing wear with contact force direction.
+ New casing wear non-linear model (based on contact pressure).
+ Take into account tool-joint or hardbanding wear
• Drill-pipe fatigue: Cumulative fatigue of dill-pipe during drilling operation.
• Drilling torsional vibration “Stick-slip”: Pure torsion problem; Numerical resolution (discretization, solve…)
Mines ParisTech
- Doctorant
2009 - 2014• Different approaches for metal fatigue in engineering.
• Drill-stem design calculations according to current standards (e.g. API RP 7G, ISO 10407 …), especially drill-pipe fatigue.
• 3D drill-string mechanical behavior in complex wellbores (Formulation & Software)
- ABIS code (Mines ParisTech): a stiff-string model of Torque & Drag, resolution of equilibrium and elastic equations by direct numerical integration method coupling with a contact algorithm. This code allows to determine drill-string deformation within the well, internal forces in drill-string, contact points and contact forces between drill-string and well-bore.
• Analytical model of bending stress for drill-pipe in a curved section of the well (Formulation & Programming).
• Develop a cumulative fatigue model for drill-pipes during drilling operation:
- Drill-pipe fatigue data (drill-pipe S-N curves, drill-pipe fatigue tests);
- Incremental computation of drill-pipe cumulative fatigue during rotary drilling operation (Shell-script and C programming).
• Developing a fatigue crack growth model for drill-pipes during drilling operation:
- Fracture mechanic.
- Finite element simulation of cracked structure (CASTEM Finite Element code, GIBIANE programming).
- Calculation of different parameters in fracture mechanic using finite element method.
- Construction of a stress intensity factor database for a semielliptical surface crack in a drill-pipe subjected to rotary bending and tension loads (CASTEM and G-thêta method).
- Realization of crack growth rate tests for different steel grades used in drill-pipes.
- Fatigue crack growth code (C programming).
- Incremental computation of fatigue crack growth during rotary drilling operation (Shell-script and C programming).
