Joint VSP and Full Azimuth 3D Seismic Exploration

Integrated inversion of VSP and surface seismic

Integrated interpretation of VSP and surface seismic

Joint acquisition of VSP and surface seismic

Parameter estimation using VSP data

Joint processing of VSP and surface seismic

Fracture stick map overlaid on the coherence slice

Azimuth gather

Processing result of ZVSP & surface seismic Spectrum of ZVSP and surface seismic

Field operation 160 levels of 3D VSP VSP fold map Geometry of full-azimuth 3D seismic

Velocity estimation Q estimation on up-going ZVSP Anisotropic parameters evaluation

Volcano structure on the coherent slice Volcano structure interpretation

AVO intercept and poisson’s ratio slices Integrated structure and AVO attribute Hydrocarbon prediction

Intercept A T0_T4c+00

σσA+B 0_T4c+00

Intercept A T0_T4c+12

σA+B T0_T4c+12

Intercept A T0_T4c+20

σA+B T0_T4c+20

P-wave (intercept) amp. with Incidence angle

Poisson’s ratio

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

XS21-1

XS21-4

XS21-3

XS21-2

XS21

T0_T4+00T0_T4+00T0_T4+12T0_T4+12T0_T4+20T0_T4+20

Dry well Low gasLow gasGas wellWater well JY-1

Structural + crater reservoirStructural + crater reservoir

Stratigraphic

Stratigraphic reservoir inSedimentary rockStratigraphic reservoir insedimentary rock

AZIM 1-360 vel_stkvel_stk+e0.24

azimuth

AZIM 1-360 vel_stkAZIM 1-360 vel_stkvel_stk+e0.24

azimuth Dry wellDry wellDry well

VSP Surface seismic

Raw data

VSP

Processing resultSurface seismicVSP Surface seismic

Raw data

VSP Surface seismic

Raw data

VSP Surface seismic

Raw data

VSP

Processing resultSurface seismic

Processing resultSurface seismic

Spectrum of final result

legend

Freq. Hz

AMP. (db)

legend

Freq. Hz

AMP. (db)

Spectrum of input

Spectrum of VSPand surface data

Surface

VSP

1500 2000 2500 3000 3500 4000 4500 5000 5500 60000

1000

2000

3000

4000

5000

6000

velocity(m/s)

tim

e (m

s)

seismic

seismic nihe

zero nihe

result

ZVSPZVSP

Surface fitting

SeismicSeismic fittingZVSP fittingFinal velocity

1500 2000 2500 3000 3500 4000 4500 5000 5500 60000

1000

2000

3000

4000

5000

6000

velocity(m/s)

tim

e (m

s)

seismic

seismic nihe

zero nihe

result

ZVSPZVSP

Surface seismic

SeismicSeismic fittingZVSP fittingFinal velocity

T com. + Q 20

T com. + Q 80

T compensatio

n

T com. + Q 50

T com. + Q 20

T com. + Q 80

T compensatio

n

T com. + Q 50 X--coordinate

Y--c

oord

inate

S__time - Paul: 2438.408(m) [range : -32--172(204)]

692000 693000 694000 695000 696000 697000 698000 699000

5095000

5096000

5097000

5098000

5099000

5100000

5101000

5102000

-20

0

20

40

60

80

100

120

140

160

Residual Δt analysis of ray travel timeCorrection In isotropic media

0 500 1000 1500 2000 2500 3000 3500 4000 4500-50

0

50

100

150

200depth :2438.4674 aita :0.23

depth：2438m；η=0.23

0 500 1000 1500 2000 2500 3000 3500 4000 4500-150

-100

-50

0

50

100S__time - Paul - aita( 0.025):2438(m) [range : -81--27(108)]

offset(m)X--coordinate

Y--c

oord

inate

S__time - Paul - aita( 0.23):2438(m) [range : -81--27(108)]

692000 693000 694000 695000 696000 697000 698000 699000

5095000

5096000

5097000

5098000

5099000

5100000

5101000

5102000

-80

-70

-60

-50

-40

-30

-20

-10

0

10

20

Residual Δt analysis of ray travel timeCorrection In anisotropic media

Residual Δt analysis of ray travel timeCorrection In isotropic media

Residual Δt analysis of ray travel timeCorrection In anisotropic media

X--coordinate

Y--c

oord

inate

S__time - Paul: 2438.408(m) [range : -32--172(204)]

692000 693000 694000 695000 696000 697000 698000 699000

5095000

5096000

5097000

5098000

5099000

5100000

5101000

5102000

-20

0

20

40

60

80

100

120

140

160

Residual Δt analysis of ray travel timeCorrection In isotropic media

0 500 1000 1500 2000 2500 3000 3500 4000 4500-50

0

50

100

150

200depth :2438.4674 aita :0.23

depth：2438m；η=0.23

0 500 1000 1500 2000 2500 3000 3500 4000 4500-150

-100

-50

0

50

100S__time - Paul - aita( 0.025):2438(m) [range : -81--27(108)]

offset(m)X--coordinate

Y--c

oord

inate

S__time - Paul - aita( 0.23):2438(m) [range : -81--27(108)]

692000 693000 694000 695000 696000 697000 698000 699000

5095000

5096000

5097000

5098000

5099000

5100000

5101000

5102000

-80

-70

-60

-50

-40

-30

-20

-10

0

10

20

Residual Δt analysis of ray travel timeCorrection In anisotropic media

X--coordinate

Y--c

oord

inate

S__time - Paul - aita( 0.23):2438(m) [range : -81--27(108)]

692000 693000 694000 695000 696000 697000 698000 699000

5095000

5096000

5097000

5098000

5099000

5100000

5101000

5102000

-80

-70

-60

-50

-40

-30

-20

-10

0

10

20

Residual Δt analysis of ray travel timeCorrection In anisotropic media

Residual Δt analysis of ray travel timeCorrection In isotropic media

Residual Δt analysis of ray travel timeCorrection In anisotropic media

3D VSP receiver array

Surface receiver area

Common source area

3D VSP(276~2700)＋Walkway VSP

Low relief + Low relief + stratigraphic reservoir

reservoir inStratigraphic reservoir insedimentary rock

Final V