vdocuments.mx_well-completion-petronas.ppt
- 2. The purpose of well completion is to provide communication between the reservoir and the surface production facilities.
- 3. TYPICAL WELL COMPLETION CONFIGURATION
- 4. Why well completion is so important ? To effectively drain out the reservoir fluids to surface. Proper completion design is crucial in maximizing recovery. To provide subsurface and surface flow control and safety. Several zones could be produced selectively or commingle it. Isolate gas and water zones. To support wellbore and avoid excessive sand production.
- 5. The well completion provides : • Pressure control • A replaceable conduit for produced fluids • Selectivity of produced intervals • Simple well killing facilities • Potential for the exclusion of solids
- 6. Mechanical Consideration Method of Well Completion Type of W ell Completion Design Data Requirement Special Studies Requirement Design Process ELEMENTS OF WELL COMPLETION DESIGN Reservoir Consideration Well Completion Design Consideration 2 1 3 4 5 6 7
- 7. 1. Design Data Requirement Well Testing Data • Production rate • Productivity Index, Skin and AOF • Basic Sediment and Water • Reservoir Pressure, Pr • Bottom Hole Flowing Pressure, Pwf Temperature • Gas Oil Ratio (GOR), Gas Lliquid Ratio (GLR) and Watercut (WC) • Type of fluid (oil, gas or water) • Degree API • Viscosity • Density • H2S, CO2 content • Fluid composition
- 8. 1. Design Data Requirement ( cont..) Reservoir Rock Properties • Depth • Thickness • Porosity and Permeability • Capillary pressure • Rock strength (Brinell Hardness Number and compressive strength) • Stresses • Young Modulus • Poissons ratio • Formation grain size (sieve analysis)
- 9. IPR with various Water Cut and GORsensitivity 10% WC 40% WC > 60% WC Increasing water cut Pressure, Psi Production Rate, Q High GOR scf/stb GOR 400 scf/stb GOR 100 scf/stb Increasing GOR Pressure, Psi Production Rate, Q IPC TPC Notes: IPR – Inflow Performance Relationship; TPC – Tubing Performance Curve; GOR- Gas Oil Ratio 2. Design Process – Tubing Selection
- 10. IPR with THP and Pr Sensitivity Increasing THP THP 500 psi THP 100 psi THP 200 Pressure, Psi Production Rate, Q Initial Pr Depleted Pr Pressure, Psi Production Rate, Q Note: Pr – Reservoir Pressure
- 11. To as large as 9 5/8” Tubing size ranges from 2 3/8” 7” 2 7/8” 3 1/2” 4” 4 1/2” 5 1/2” Completion Tubing Sizes
- 14. Production casing Perforation Tubing Tubing hanger SCSSV Landing/Seating nipple SSD Wireline Entry Guide 1/4” control line Gaslift mandrel (Side pocket mandrel) Flow coupling Dual packer Blast joint Telescopic joint No-go nipple Single packer Completion Accessories
- 15. 3. Special Study Requirement • PVT • Core Analysis • Metallurgy • Formation Water/Crude Analysis
- 16. • Production rate /Inflow performane • Formation strength • Fluid type (corrosion, scale and wax/asphaltene) • Reservoir permeability • Reservoir pressure • No. of reservoirs • Reservoir management 4. Reservoir Considerations
- 17. There are various types of well completion : 5. Types of Well Completion • Single string / selective single • Dual string • Gravelpack • slim well • monobore • horizontal • multilateral • twin well / triple well • Y Block completion • smart / intelligent well
- 18. Selective Zone Selective Zone Gravel Packed Gravel Packed Cased Hole Well Completion: Single String Types With and without gravel packed Cased Hole Cased Hole Cased Hole
- 19. Well Completion Dual Strings Types With & Without Gravel Packed Cased Hole No Gravel Packed Short String Selective/Non Selective Cased Hole With All Gravel Packed/ Only Shallower Reservoirs Gravel Packed
- 20. Slim Well Drilling small hole sizes and completing with smaller casing scheme. This will enable faster drilling with less casing tubular, cement and associated drilling materials hence lower cost.
- 21. Monobore Big bore Monobore (e.g. 3 1/2” tubing with 3 1/2” liner) 4”-7” tubular
- 22. DUAL SLIMHOLE MONOBORE 23” hole Flush Joint
- 23. Horizontal Well
- 24. Twin well - Horizontal Requires special wellhead and x-mas tree arrangement Two wells in one conductor
- 25. TAML (Technology Advancement MultiLateral) - 7" SC1AH Packer - 4.00" Sealbore Extension 3.1/2" Float Shoe, Float Collar and Landing Collar Level 6 FORMation Junction 9.5/8"X7"X7" LOWER LATERAL - Xover 4.1/2" 12.6 N Vam to 3.1/2" 9.2ppf New Vam - Perforations in N-Series Sands 7" SC1AH Packer - 4.00" Sealbore Extension - Xover 4.1/2" 12.6 N Vam to 3.1/ 2" 9.2ppf New Vam - Perforations in N-Series Sands 3.1/2" Float Shoe, Float Collar and Landing Collar Size 51B Baker GT Dual 3.1/2"X3.1/2" Dual Completion Baker 9.5/8"X3.1/2"X3.1/2" Dual Completion Module (DCM) Size 80-40 Locator Seal Assembly Level 6
- 27. • The Triple Wellhead is now a proven technology • It will make a marginal field economical to be developed • It has the potential also to enhance project economics with installation of smaller platforms to drill the same number of wells Triple Well Head
- 28. • Three wells drilled and completed from one shared conductor • It provides 6 production strings Triple well
- 29. Y Block Completion Without Y Block, selectivity on short string is not possible (for gravelpack completion). Typical Dual string Completion
- 30. Over the Coupling Umbilical Clamp 9 5/8" PES HF-1 Hydraulic Feed Through Packer Note all lines fed thru from Flatpack to respective tool 3 1/2" LV Ball Valve 3 1/2" PES Triple Gauge w External Port to Lower Zone 3 1/2" CC-1 Sleeve 1/4" Hydraulic Tube terminated from PDG to LV 3 1/2" SCSSV PES 5 Line Flatpack 1/4" Hydraulic Tube from Gauge transducer to LV Valve Advantages 1-Shorter Manufacturing Time 2-Significantly Lower Capex 3-Two Less Electronic Connections Dual Zone Completion with Triple P/T Gauge Mandrel SCSSV Line PT Gauge I Wire Control Valve Hydraulic Line PES Taper Lock Clamp (Stabilizes Flatpack End) Hydraulic Splice Sub w Cover Sleeves (Acts as Hydraulic Termination Point & Take off for Hydraulic lines to surface, also a hydraulic tee for "common hydraulic line") bottom CC-1 Sleeve) SMART well with downhole inflow control and P/T gauges
- 31. SMART 2 SMART VALVES • Under Balanced Drilling • SMART Commingling • Expandable Sand Screen • Triple Gauge • Interval Control Valve • Lubricator Valve 150 ftah (50 ft tvd) 8 1/2” hole, TD at 8113 ft (3890 ftss, 69 deg) 9 5/8” csg @ 7864 ftah (3630 ftss, 69 deg) 13 3/8” csg at 4000 ftah (2461 ftss, 69 deg) 26” conductor @ 600 ftah 7” Tbg L80 CS 3 1/2” Tbg L80 CS 3.1/2” SSD 3.1/2” Ball Valve with P/T gauges 18 5/8” surface casing @ 1600 ftah (1445 ft.tvd, 37 deg) H1 L1 L2 SSD • • • • 2 ICV LV 1 3 L H
- 32. 6. Methods of Well Completion • Cased hole • Open hole Open Hole Cased Hole
- 33. METHOD OF WELL COMPLETION Conventional Single/dual Slimhole- monobore 26” 13-3/8” 9-5/8” 7” 24” / 20”x 13-3/8” 9-5/8” 3-1/2” tbg 2 x 7” 2 x 3-1/2” Slimhole Single 3-1/2” 7” 26” TD = 5450-8000 ft 4-1/2”
- 34. Sequence of Completion Operations : • Well cleanout • Perforate • Kill well • (Sand exclusion - if required) • Run and set completion string • Install X-mas tree • Flowline Tie-in • Unloading well • Handover to production
- 35. reservoir reservoir reservoir reservoir Well Preparation And Cleaning Clean Out Assembly Bit and Scraper + Cleanout Fluid
- 39. Production Flow Line Tie-In Production header To Production system well
- 40. reservoir reservoir reservoir reservoir Unloading Well and Handover To Production Operations
- 41. • Safety • Simplicity/Reliability • Well Surveillance/Monitoring Requirement • Tubing Stress and Movement • Future Slick/E-line Intervention Technology • Future Work-over and Abandonment. 7. Mechanical Considerations
- 42. There are different ways of completing wells with different types of artificial lift Types of artificial lift : • Gas lift • Sucker rod (Bean Pump) • Progressing Cavity Pump (PCP) • Electrical Submersible Pump (ESP) • Subsurface Hydraulic Jet Pump (SHJP) • Plunger Lift
- 43. Artificial lift – Gaslifting Well GAS LIFT WELL Injection gas Produced fluid Gas Sold or Flared SEPARATOR Oil & Water out GAS SOURCE WELL GAS LIFT WELL Injection gas Produced fluid Gas Sold or Flared SEPARATOR Oil & Water out GAS SOURCE WELL
- 44. Gaslift System Side Pocket Mandrel with Gas-Lift Valve Gas-Lift Completion—SPMs and Retrievable Valves Artificial Lift
- 45. Sucker rod (Bean Pump) Artificial Lift
- 46. Artificial Lift Sucker Rod Pump (SRP)
- 47. Progressing Cavity Pump (PCP) Artificial Lift
- 48. Artificial Lift Progressive Cavity Pump (PCP) PCP Down Hole Equipment PCP Surface Facilities
- 49. Artificial Lift Progressive Cavity Pump (PCP)
- 50. Artificial Lift Electrical Submersible Pump (ESP)
- 51. Electrical Submersible Pump (ESP) Artificial Lift
- 52. Artificial Lift Hydraulic Jet Pump (HJP)
- 53. Artificial Lift Hydraulic Jet Pump (HJP)
- 55. THANK YOU
- 56. PCSB's well completion review • Most of PCSB's wells are cased hole either single or dual completion. However, there are a few wells completed opened hole (slotted liner). • Tubing size used range from 2-3/8" to 5-1/2 OD. • PCSB has completed horizontal wells, multilateral wells, wells with gravel packing completion, slim well and one twin well. • Completion with 1 packer to 6 packers, completing from 1 to 5 zones in a single wellbore.