WES Trainings

Drilling Engineering

Course Outline

Day - 1

Paper work prior to spud the well 

  • Final Investment Decision (FID) or Board Resolution 
  • Permits, environmental approvals and RA 
  • Statement of Requirements (SoR) 
  • AFE (cost estimate with contingency plan NPT) 
  • Drill Well on Paper 
  • Peer review 
  • Drilling program 

Contracting strategy 

  • Drilling schedule 
  • Tender phase (clarifications, technical & commercial evaluation) 
  • Fax of Award (contracts for rig and all third parties) 

 

Identifying the Geological concepts 

  • Rock types 
  • Reservoir characteristics 
  • Porosity & Permeability and saturation 
  • Formation pressure, fracture gradient 
  • Stress affected on formation & Well bore stability  
  • Leak off test curve & application 
Day - 2

Drilling fluids (mud) 

  • Types (OBM, WBM, Slica, spud, Polymers, etc…) 
  • Functions & applications 
  • Parameters & rheology 
  • Chemical additives 

Directional drilling principles 

  • Reasons for direction drilling 
  • Well types & how to drill 
  • Directional equipment 
  • PDM types & specifications 
  • MWD & LWD 
  • RSS types (push the bit & point the bit) 
  • Coordinates, survey types, uncertainties and anti-collision 
  • Horizontal & multilateral wells 

Design for the Critical drilling parameters for each phase 

  • WOB, RPM, GPM, ROP 
  • Hole cleaning issues & how to avoid 
  • BUR, TR, DLS (calculation & best  practices) 
  • T&D analysis (causes & effects) 
  • Hydraulics roles to enhance well condition 
  • Buckling causes & effect 
  • Kick tolerance 
  • Surge & swap effect 
Day - 3

Well control 

  • Equipment & functions (BOP, accumulator, driller panel, choke manifold, choke line, kill line & MGS, etc…) 
  • Killing procedures & method 
  • Kick tolerance design 
  • BOP responding time 

Casing & Cementing 

  • Casing types & setting depth criteria 
  • Casing design as per formation specifications 
  • Design for casing accessories placement for better cement job 
  • Casing running procedures & limitations 
  • Cement composition & calculation with excess volumes 
  • CBL plan to evaluate CMT 
Day - 4

Hole problems & best practices 

  • Wellbore instability 
  • Hole cleaning 
  • Formation damage 
  • Stuck pipe (mechanical & differential) 
  • Lost circulation 
  • Equipment failures 
  • Unexpected high formation pressures 
  • Case studies & lessons learned 

Planning for Formation Evaluation program 

  • LWD 
  • Open hole logs 
  • Cased hole logs 
  • Samples & coring program 
Day - 5

Completion types & applications 

  • Cased hole 
  • Open hole 
  • Slotted liner 
  • Dual completion 
  • Smart completion 

KPI’s to follow for better performance 

  • Time Vs. depth chart 
  • Cost Vs. depth chart 
  • Survey plot (actual Vs. plan) 
  • Borehole quality (gauge hole in W/L logging) 
  • Dead time evaluation (M/up, L/D BHA, Trip performance, N/up, N/D BOP, Running Casing speed, rig move time) 
  • Downhole tools reliability (tool failure frequency) 
  • Hole cleaning (annular velocity, mud yield point, shear strength) 
  • Well control team efficiency (kick volume if any, respond time for BOP & personnel at kick drills) 
  •  Over-run budget if any or cost saving 
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