HPHT Drilling Design & OperationsDRIL/HPHTE

Who should attend?

  • This course aims to provide a comprehensive knowledge on how to design and execute an HPHT well in an exploration or development context.
Audience :
  • Drilling engineers, drilling supervisors, drilling superintendents.

Level : Advanced

Course Content

  • GENERALITIES

      • Applications, terms and definitions.
      • PPFG aspects of HPHT reservoirs (effect of depletion, geomechanics).
      • Well architecture specificities of HPHT wells.
  • BASIC DESIGN ENGINEERING

      • Casing design specific to HPHT (thermal simulations/introduction to limit-state and reliability based design/survival loads).
      • OCTG choice (material grade, SSC, qualification).
      • OCTG connector choice (test and qualification).
      • Well equipment (liner, wellheads, casing hangers…).
      • Annulus management systems (N2 cushion, burst discs, crushable foams…).
      • Subsea HPHT specificities (wellhead fatigue, X-Mas tree choice, APB).
  • ADVANCED HPHT WELL ENGINEERING

      • Casing wear (modeling, measurement, remedial).
      • Wellhead growth (modeling and impacts, heat island effect).
      • Fluids & cement aspects of HT environments.
      • Kick tolerance modeling (dispersed modeling w/drill bench or equivalent, limitations of single bubble in HPHT).
      • Hydraulic modeling in HPHT operations.
      • Logging (current HT limitations on MWD tooling).
      • Introduction to MPD.
      • In-field drilling (depletion and stress caging…).
  • OPERATIONAL PREPARATION

      • Rig inspection program for HPHT operations.
      • Equipment specific to HPHT (mud coolers, kick assembly, early-kick-detection…).
      • Hydrates (formation mechanisms, prevention).
      • HPHT checklists.
      • HPHT procedures (pit management and discipline, breaking circulation, connections, flow checks, tripping procedures, pump out of hole).
      • HPHT coring and wireline logging.
  • OPERATIONAL EXECUTION

      • ECD management.
      • Wellbore breathing (breathing vs. kick, loss-gain scenarios, supercharging mechanisms, fracture…).
      • Well control aspects.
      • (E)LOT/FIT in HPHT.
      • Mud weight management.
      • Fingerprinting (dummy) connections, swab & surge, compressibility test, drain back/flow volume…).
      • Case studies (HPHT train wrecks, database analysis of exploration and development wells).

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • understand the design concepts related to an HPHT well,
  • learn about required operational preparedness aspects of HPHT drilling operations,
  • assimilate the key aspects for executing successful operations in HPHT drilling.

Ways & Means

  • Presentations.
  • Exercises.
  • Application to real cases.