Figure 1 - Gauges Overlay & Difference Plot
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1 BONAVISTA PETROLEUM LTD. Figure 1 - Gauges Overlay & Difference Plot Bottom Gauge Defference Top Gauge Time (hours) Pressure difference () Pressure () 23000
2 23000 Figure 2 - Bottom Pressure Vs Temperature Plot Pressure () Temperature (deg C) Bottom Gauge Bottom Temp Time (hours) 86
3 Delta m(p) / Delta Q (2/uPa.s (*1E-06) / m3/day (*1E-03) (st)) Figure 3 - Log - Log Gauge Overlay Plot (using pseudo time) Bottom Gauge Bottom Gauge Derivative Top Gauge Top Gauge Derivative Elapsed Time (hours)
4 23000 Figure 4 - Test Overview Plot Pressure () Bottom Gauge Rate Changes Rate Schedule Gas Flow Rate (m3/day (*1E-03) (st)) Time (hours)
5 40 Bottom Gauge Quick Match Pressure Figure 5 - Cartesian Match Plot (using pseudo time) m(p) (2/uPa.s (*1E-06)) Quick Match Results Interpretation 2 Vertical fracture - infinite conductivity Infinitely acting Constant compressibility Cs = 1.561e-004 m3/ Cphi = Tau = hr k = md kh = md.m Sf = 1.000e-005 Xf = m D = 0 1/(m3/day) Pi = Elapsed Time (hours)
6 Delta m(p) / Delta Q (2/uPa.s (*1E-06) / m3/day (*1E-03) (st)) Figure 9 - Primary Log - Log Plot (using pseudo time) Bottom Gauge SSS Derivative Bottom Gauge Derivative Elapsed Time (hours) Figure 9 - Primary Log - Log Plot Line Details Line type : Free model line Slope : 1 Intercept : Coefficient of Determination : Not Used Line type : Free model line Slope : 0.5 Intercept : Coefficient of Determination : Not Used Line type : Free model line Slope : 0 Intercept : Coefficient of Determination : Not Used Permeability Permeability-thickness Number of Intersections = 0 Free model line md md.m
7 Delta m(p) / Delta Q (2/uPa.s (*1E-06) / m3/day (*1E-03) (st)) Figure 7 - Log - Log Match Plot (using pseudo time) Bottom Gauge Bottom Gauge Derivative Quick Match Pressure Quick Match Derivative Quick Match Results 0.01 Interpretation 2 Vertical fracture - infinite conductivity Infinitely acting Constant compressibility Cs = 1.561e-004 m3/ Cphi = Tau = hr k = md kh = md.m Sf = 1.000e-005 Xf = m D = 0 1/(m3/day) Pi = Elapsed Time (hours)
8 m(p) (2/uPa.s (*1E-06)) Figure 8 - Radial Flow Match Plot (using pseudo time) Bottom Gauge Quick Match Pressure Quick Match Results Interpretation 2 Vertical fracture - infinite conductivity Infinitely acting Constant compressibility Cs = 1.561e-004 m3/ Cphi = Tau = hr k = md kh = md.m Sf = 1.000e-005 Xf = m D = 0 1/(m3/day) Pi = Superposition Time Function Figure 8 - Radial Flow Match Plot Line Details Line type : Free model line Slope : Intercept : Coefficient of Determination : Permeability Skin factor Total mobility Permeability-thickness dp skin (constant rate) Radius of investigation Extrapolated m(p) Extrapolated pressure m(p) at dt = 1 hr Pressure at dt = 1 hour Flow efficiency Number of Intersections = 0 Free model line md md/ md.m m /uPa.s (*1E-06) /uPa.s (*1E-06) e
9 Reservoir Description Fluid type : Gas Well orientation : Vertical Number of wells : 1 Number of layers : 1 Layer Parameters Data Formation thickness Average formation porosity Water saturation Gas saturation Formation compressibility Total system compressibility Layer pressure Temperature Well Parameters Data Layer m e e deg C Well radius Distance from observation to active well Wellbore storage coefficient Storage Amplitude Storage Time Constant Second Wellbore Storage Time Change for Second Storage Well offset - x direction Well offset - y direction Fluid Parameters Data Gas gravity Water-Gas ratio Water salinity Check Pressure Check Temperature Gas density Initial gas viscosity Gas formation volume factor Water density Water viscosity Water formation volume factor Initial Z-factor Initial Gas compressibility Water compressibility Layer 1 Correlations Ug Correlation : Carr et al Ug Correlation : Hall Correlation Well mm m e-4 m3/ hr m3/ hr m m Layer sp grav m3/m ppm e deg C g/cm e-3 m3/m3 (st) g/cm m3/m e e-7-1 Layer 1 Model Data Layer 1 Model Type : Vertical fracture - infinite conductivity
10 Permeability Fracture face skin Fracture half-length Rate dependent skin coefficient (D) Layer 1 P/U/Z Table Zi Layer md e m /(m3/day) Layer 1 P/U/Z Table (cont) Zi
11 Layer 1 P/U/Z Table (cont) Zi Layer 1 P/U/Z Table (cont) Zi
12 Layer 1 P/U/Z Table (cont) Zi Layer 1 U/Ct Table Ct e e e e e e e e e e e-4 Layer 1 U/Ct Table (cont) Ct e e e e e e e e e e e-4
13 Layer 1 U/Ct Table (cont) Ct e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e-4 Layer 1 U/Ct Table (cont) Ct e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e-5
14 Layer 1 U/Ct Table (cont) Ct e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e-5 Layer 1 U/Ct Table (cont) Ct e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e-5
15 Layer 1 m(p) Table m(p) 2/uPa.s (*1E-06) e e Layer 1 m(p) Table (cont) m(p) 2/uPa.s (*1E-06)
16 Layer 1 m(p) Table (cont) m(p) 2/uPa.s (*1E-06) Layer 1 m(p) Table (cont) m(p) 2/uPa.s (*1E-06)
17 Layer 1 m(p) Table (cont) m(p) 2/uPa.s (*1E-06) Rate Change Data Time Hours Pressure Rate m3/day (*1E-03) (st)
18 25000 Sandface Deliverability Plot Extended0 Stabilized Pressure () Flow Rate (m3/day (*1E-03) (st)) Layer 1 Deliverability Data Layer pressure Dietz shape factor Drainage area Permeability (Kpr): Pseudo-radial Skin (Spr): C-coefficient n-coefficient Absolute open flow potential (Gas) Stabilised Pressure Stabilised Rate Stabilised C Stabilised AOF Flow capacity dp skin (constant rate) Flow efficiency Damage Ratio Radius of investigation Time to stabilisation Layer ha md e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st) m3/day (*1E-03) (st) e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st) md.m m hr
19 10000 Sandface C&n Plot 1000 (dp)2 (2 (*1E-06)) 100 Model Results Interpretation 2 Vertical fracture - infinite conductivity Infinitely acting n = 1 C = 5.446e-008 m3/day/2(*1e-03) AOF = m3/day (*1E-03) (st) Flow Rate (m3/day (*1E-03) (st)) Sandface C&n Plot Model Results Vertical fracture - infinite conductivity - Infinitely acting Fair Wellbore Storage n-coefficient C-coefficient Absolute open flow potential (Gas) Sandface C&n Plot Line Details Line type : Extended Flow Slope : 1 Intercept : Coefficient of Determination : Not Used Number of Intersections = 0 Value e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st)
20 19000 Wellhead Deliverability Plot Extended0 Stabilized Pressure () Flow Rate (m3/day (*1E-03) (st)) Layer 1 Deliverability Data Layer pressure Dietz shape factor Drainage area Permeability (Kpr): Pseudo-radial Skin (Spr): C-coefficient n-coefficient Absolute open flow potential (Gas) Stabilised Pressure Stabilised Rate Stabilised C Stabilised AOF Flow capacity dp skin (constant rate) Flow efficiency Damage Ratio Radius of investigation Time to stabilisation Layer ha md e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st) m3/day (*1E-03) (st) e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st) md.m m hr
21 10000 Wellhead C&n Plot 1000 (dp)2 (2 (*1E-06)) 100 Model Results Interpretation 2 Vertical fracture - infinite conductivity Infinitely acting n = 1 C = 9.081e-008 m3/day/2(*1e-03) AOF = m3/day (*1E-03) (st) Flow Rate (m3/day (*1E-03) (st)) Wellhead C&n Plot Model Results Vertical fracture - infinite conductivity - Infinitely acting Fair Wellbore Storage n-coefficient C-coefficient Absolute open flow potential (Gas) Wellhead C&n Plot Line Details Line type : Extended Flow Slope : 1 Intercept : Coefficient of Determination : Not Used Number of Intersections = 0 Value e-8 m3/day/2(*1e-03) m3/day (*1E-03) (st)
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