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  • Hatfield-1102: Identify rock-strewn areas to avoid point loading

 

Identify rock-strewn areas to avoid point loading

Challenge ID:

HCP-1102

Originator:

Onshore: Hatfield

Title:

Identify rock-strewn areas to avoid point loading.

 

Theme:

ON 1.1: Seismic Planning - Areas of poor coupling

Consortium Lead:

RPS Group

Interviewed Company:

RPS Group

Geography:

ON.REG.00 - Generic onshore

Challenge Description

What is not possible / not adequately addressed at present?

Poor data quality is experienced in areas where the source strength is easily absorbed.

If dynamite is used as a source then certain rock types require different drill methods.  Extra effort and time required for receiver line layout if individual receivers need to be drilled in place.

Access issues - extremely rough terrain for trucks/vibroseis vehicles may need a large clearance effort.

What effect does this challenge have on operations?

Surface geology can affect coupling, seismic signal response and seismic acquisition logistics. Large surface and semi-buried rocks in arid environments can affect the vibroseis equipment (vibrating plate may be in contact with buried rocks, leading to poor coupling). Different surface geology can diffuse or deflect seismic signals, while actual surface conditions can affect receiver layout and vehicle and personnel movements.

Thematic information requirements:

Ortho base images

Terrain information

Lithology, structural geology,  surficial geology

What do you currently do to address this challenge? 

How is this challenge conventionally addressed?

Regional geological maps and satellite imagery is used to identify potential areas.

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

A method to estimate rock density or surface roughness. More accurate delineation of surface geological extents could lead to more intricate seismic design.

What is your view on the capability of technology to meet this need?

Are you currently using EO tech? If not, why not?

Would consider reflectance-based assessment to identify rock density or surface roughness from radar.

Challenge Classification

Impact on Lifecycle (0=none, 4=high):

Climate / Topography / Urgency:

Pre-license:

1

Climate class:

Dry

Exploration:

3

Topographic class:

Barren Plains

Development:

2

Seasonal variations:

Any season

Production:

1

Impact area:

Data Quality

Decommissioning:

1

Technology urgency:

3 - Immediately (0-2 years)

Challenge Information Requirements

Update frequency:

Snapshot

Data currently used:

Reconnaissance

Spatial resolution:

Regional, Basin

Thematic accuracy:

Not specific

Required formats:

Not Specific

Timeliness (Vintage):

Reference data

Geographic extents:

Regional

Existing standards:

None