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  • OTM-058: Identifying ground conditions susceptible to poor coupling

 

Identifying ground conditions susceptible to poor coupling 

 

Challenge ID

OTM:058

1

Title

Identifying ground conditions susceptible to poor coupling

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Theme ID

ON 1.1: Seismic Planning - Areas of poor coupling

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Originator of Challenge

Onshore: OTM

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Challenge Reviewer / initiator

PEMEX, Statoil, PetroSA, Petronas

 

General description

Overview of Challenge

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

It is necessary to maintain signal transfer and integrity through good coupling between the baseplate and surface.  Obstacles such as  small boulders make it impossible to achieve good coupling and consequently, these can demand a change in the sweep location or even prevent the sweep from taking place.  This impacts the quality of the survey output.

We need to identify where these ground conditions are located and how they interfere with our survey route so that we can plan for these and develop a survey that uses the most efficient lines.

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Thematic information requirements

1. Obtain detailed topographic information, 2. Obtain detailed terrain characterisation,  4. Obtain detailed land-use information,        11. Determine lithology, mineralogy and structural properties of the near surface,

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

The quality of output can be reduced if grid spacing is too varied.  Quality of output can also be reduced if the coupling at the point is not satisfactory. This can ultimately lead to reservoir understanding being hampered, and thus a reduction in potent

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

Scouting team deployed ahead of seismic vehicle, remote sensing, historical mapping (e.g. military maps), online imagery

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

 

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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

 

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Lifecycle stage

Pre license

Exp.

Dev.

Prod.

Decom.

Score from impact quantification [1]

2

3

0

0

0

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Climate classification

NOT CLIMATE SPECIFIC

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Geographic context/restrictions

Generic onshore (Unspecified)

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Topographic classification / Offshore classification

Generic onshore (Unspecified)

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Seasonal variations

Any season

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Impact Area

Data quality, operational cost reduction

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Technology Urgency

(How quickly does the user need the solution)

Immediately (0-2 years)

 

Information requirements

 

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Update frequency

Snap shot requirement

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Data Currently used

scouting, remote sensing, historical mapping (e.g. military maps),

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Spatial resolution

scouting, remote sensing, historical mapping (e.g. military maps),

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Thematic accuracy

 

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Example formats

GeoTIFF / TIFF with TFW. ECW format (better than TIFF for small hand-held devices used on the ground)

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Timeliness

Reference data - timeliness not important

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Geographic Extent

Reservoir footprint / area of seismic survey

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Existing standards

None relevant


 


[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