1. Estimating Reservoir Potential of Wadis by Waveform Inversion and Land Streamers

2. Motivation
To characterize the shallow subsurface at Wadi Qudaid for its water storage and reuse potential.

3. Area of Interest
KAUST

4. Collected Geophysical Data (Seismic Data)

5. Seismic Data CSG Samples
0.0
0.3
232
X (m)
Time (s)
0.0
0.3
232
X (m)
Time (s)
0.0
0.3
232
X (m)
Time (s)
0.0
0.3
232
X (m)
Time (s)

6. Data Processing Apply a bandpass filter of 15 ~ 70 Hz.
Correct for the geometric spreading: 3D → 2D.
Correct for attenuation by an estimated Q.
Mute the near-offset traces within 14 m.
Extract a natural source wavelet by averaging the near-offset first arrivals.

7. Seismic Result

8. Collected Geophysical Data (Resistivity Data)

9. Resistivity Result P2 P1 P2 P1

10. Land Streamer Test
Test # 1 Saudi Arabia

11. Land Streamer Geophysical Field Laboratory at KAUST has
5 land streamers
P-wave geophones
24-channel at each streamer
Up to 2 m geophone interval

12. Test # 1 Data are collected at Saudi Arabia
Two parallel lines are collected
The first is a conventional seismic profile, where geophones are planted in the ground
The second is a land streamer survey

13. 1.5 m
Land Streamer
Shot Location
Conventional Seismic

14. a) CSG # 74, Convention Seismic Data
Trace Comparison
a) CSG # 74, Convention Seismic Data
Time (s)
0.2 93
153
X (m)

15. b) CSG # 74, Land Streamer Seismic Data
Trace Comparison
b) CSG # 74, Land Streamer Seismic Data
Time (s)
0.2 93
153
X (m)

16. Test # 2 Robotec Survey Utah, USA
Land Streamer Test
Test # 2 Robotec Survey Utah, USA

17. Test # 2 Robotic Land Streamer
Data are collected at Utah, USA
One profile is collected with 10 CSGs
In each shot gather the land streamer moved 10 times to give a total number of traces/shot gather of 231
Shot Loc.
…………
Position 1
Position 2
Position 3
Position 10

19. Test # 2 CSG Sample Sample interval = 2 ms 0.0 Sample 550 0.0 17.56
X (m)
Sample interval = 2 ms