Client: Major oil company
Topic: Survey QC for 2D land seismic

Situation

• The Geo People supported seismic operations on behalf of a major oil company
• 2D land survey 
• Four blocks in Libya
• Two crews to work in separate areas simultaneously

Challenges

• Presence of archaeological remains
• Diverse topography
• High sand dunes 
• Presence of UXO

Actions

• Archaeological remains required to be left undisturbed, documented and reported immediately
• Sand dunes were approximately 30-50m high and bulldozers were needed to create access for the crew’s vibrators
• Clearance of both discovered unexploded ordnance (UXO) from World War II and landmines from the recent Libya/Egypt dispute of 1977
• Full operations supervision, a technical audit and survey QC
• Supervision of construction of GPS control network which used RTK GPS methodology. Modifications were made by our consultants to seismic lines involving extensions, shortening, cancellation and movement
• Reports submitted to client on daily, weekly and monthly basis

Results

• Produced a final GPS network report, a RTK survey report, an ITRF network tying-in report and a general acquisition QC report
• Safe seismic and navigation data acquisition
• Accurately positioned seismic data
• Reinforcement of the results and findings of an initial airborne gravity survey over the same area