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  • OTM-054: Understanding the near-surface for anticipating seismic signal absorption properties

 

Understanding the near-surface for anticipating seismic signal absorption properties

 

Challenge ID

OTM:054

1

Title

Understanding the near-surface for anticipating seismic signal absorption properties

2

Theme ID

ON 2.3: Surface Geology Mapping - Lithological discrimination

3

Originator of Challenge

Onshore: OTM

4

Challenge Reviewer / initiator

PEMEX

 

General description

Overview of Challenge

5

What is the nature of the challenge? (What is not adequately addressed at present?)

Understanding the near surface.  This is a key challenge in seismic imaging as it is where most of the seismic signal is lost.

6

Thematic information requirements

2. Obtain detailed terrain characterisation,         11. Determine lithology, mineralogy and structural properties of the near surface,

7

Nature of the challenge - What effect does this challenge have on operations?

Any additional understanding that could be obtained would enable better calibration of models and analysis of the acquired data.

 

8

What do you currently do to address this challenge?/ How is this challenge conventionally addressed?

Currently near surface models are created; it can be with an uphole survey for example, or pre-existing seismic data. Some specialist companies have Rayleigh wave inversion techniques that provide a proven valuable method of studying the near surface. Com

9

What kind of solution do you envisage could address this challenge?

 

10

What is your view on the capability of technology to meet this need? – are you currently using EO tech? If not, why not?

 

 

Challenge classification

 

11

Lifecycle stage

Pre license

Exp.

Dev.

Prod.

Decom.

Score from impact quantification [1]

2

4

0

0

0

12

Climate classification

NOT CLIMATE SPECIFIC

13

Geographic context/restrictions

Generic onshore (Unspecified)

14

Topographic classification / Offshore classification

Generic onshore (Unspecified)

15

Seasonal variations

Any season

16

Impact Area

Decision enabler, improved quality of seismic output

17

Technology Urgency

(How quickly does the user need the solution)

Immediately (0-2 years)

 

Information requirements

 

18

Update frequency

Snap shot requirement

19

Data Currently used

 

20

Spatial resolution

 

21

Thematic accuracy

 

22

Example formats

 

23

Timeliness

Reference data - timeliness not important

24

Geographic Extent

reservoir footprint

25

Existing standards

 


 


[1] Impact quantification scores: 4 – Critical/ enabling; 3 – Significant/ competitive advantage; 2 – Important but non-essential; 1 – Nice to have; 0 – No impact, need satisfied with existing technology