Slide 1: Integrated Field Development Strategy of F5000 and G8000 Reservoirs in Obom Field
Centre of Excellence in Geoscience and Petroleum Engineering University of Benin INTEGRATED FIELD DEVELOPMENT STRATEGY OF F5000 AND G8000 RESERVOIRS IN OBOM FIELD. Presenter: Onome Okobiebi
Slide 2: Outline; Project Objectives and Deliverables
OUTLINE q Field Overview q Upscaled logs/ Facies model q Data review/ Study workflow q Petrophysical Modelling q Stratigraphic correlation/ Facies identification q Reservoir Volumetrics q Sequence Stratigraphic Framework q Development Opportunities q Conceptual model q Conclusion q Fault interpretat
Slide 3: Field Overview
FIELD OVERVIEW Location East Niger Delta OBOM- OBOM- OBOM- 006 003 002 Area Onshore, Land Discovery History 1965 by OBOM-001 Drilled Wells 14 wells Structural Geology The field is a simple rollover structure elongated in the east-west direction, and bounded by a curved growth fault in the north-west
Slide 4: Data Review/ Study Workflow
DATA REVIEW/ STUDY WORKFLOW STUDY WORKFLOW OBOM-001 OBOM-002 OBOM-003 OBOM-004 OBOM-005 OBOM-006 OBOM-007 OBOM-008 OBOM-009 OBOM-010 OBOM-011 OBOM-012 OBOM-013 OBOM-014 Centre of Excellence in Geoscience University of Benin 4
Slide 5: Stratigraphic Correlation/Facies Identification
STRATIGRAPHIC CORRELATION/FACIES IDENTIFICATION Strike Section q Correlation of OBOM wells on west – east direction(W-E) along q Correlation of OBOM wells on west – east direction(W-E) along strike showing the lateral continuity of reservoir. strike showing the lateral continuity of reservoir. q Dip
Slide 6: Sequence Stratigraphic Framework
SEQUENCE STRATIGRAPHIC FRAMEWORK Obom_012 [SSTVD] Obom_003 [SSTVD] Obom_008 [SSTVD] Two 3rd order depositional cycles occurred from the G8000 sands to the F5000 sands with a retrogradation sequence Highstand systems tract Transgressive systems tract BASINWARD Lowstand systems tract 6 Centre of Excel
Slide 7: F5000 and G8000 Conceptual Models
F5000 AND G8000 CONCEPTUAL MODELS G8000 F5000 § Evidence from well log correlation, SWS description and Sequence Stratigraphy § Evidence from well log correlation, SWS description and Sequence Stratigraphy indicates that the G8000 sand was deposited in a channelized shoreface indicates that the F500
Slide 8: Fault/Horizon Interpretation
FAULT/HORIZON S N INTERPRETATION OBOM FIELD FAULT BLOCK OGWUGWU FIELD OBOM Main Growth Fault F5000 HORIZON G8000 HORIZON G8000 HORIZON Notes q Horizons were interpreted by picking event on a grid of 4inlines & 4xlines sections q Faults were interpreted every 5lines (125m intervals) in the inline dir
Slide 9: Structural Modelling
STRUCTURAL MODELLING § Structural model were built to capture the trapping mechanism of the OBOM field in NW OBOM0 OBOM0OBOM0OBOM0 01 03L 11L 04 SE 3D. One major growth fault was modelled in the OBOM Field. § Faults were modelled to best represent the subsurface using seismic volume and semblance sl
Slide 10: Upscale Logs/Facies Model
UPSCALE LOGS/FACIES MODEL OBOM003L [SSTVD] OBOM011L [SSTVD] OBOM005L [SSTVD] § The facies model was built using Sequential Indicator Simulation algorithm. § To capture flow units the G8000 reservoir model is subdivided into 4 zones § To further capture reservoir heterogeneities the flow G8000 units
Slide 11: Petrophysical Modeling for G8000
PETROPHYSICAL MODELING FOR G8000 q Built using the q Built using the Sequential Gaussian Sequential Gaussian simulation algorithm simulation algorithm and cokrigged to Average = 0.23% porosity. Average =2137mD PERMEABILTY POROSITY G8000 MODEL G8000 MODEL q Built using the Saturation model was Sequen
Slide 12: Reservoir Volumetrics
OBOM G8000 S TOIIP(MMstb) RESERVOIR VOLUMETRICS GRV § Using the different structural realizations resulting in different GRVs NTG SAT static volumes were estimated. POR § Imported saturations from the Reservoir Engineer used to compute Low Case -20 -10 0 10 20 volumes. AVERAGE PROPERTIES/VOLUMES POR
Slide 13: Development Opportunities
DEVELOPMENT q After Integrating with the Reservoir Engineer both reservoirs OPPORTUNITIES q Well OBOM-001 at the top of gas cap of Reservoir Merit Map After HM OBOM0 01 F5000 OBOM006 OBOM012 OBOM006 OBOM0 OBOM003 L 01 OBOM0 OBOM011 OBOM0 OBOM01OBOM008 OBOM002 02 L OBOM009 OBOM010 OBOM008 OBOM009 OBO
Slide 14: Conclusion
CONCLUSION q Deterministic Base case in-Place volumes of 261Bscf of gas and 47MMstb of oil for G8000 reservoir and 37.4Bscf of gas for F5000 reservoir. q Depositional Environment: The G8000 reservoir was deposited in a channelized shoreface environment and the F5000 reservoir a Lower shoreface depos
Slide 15: Thank you for listening
Thank you for listening Centre of Excellence in Geoscience University of Benin 15