I. Preexploration 



A. Broad area reconnaisance 



1. Gravity methods 



2. Magnetometer 



3. Natural oil seep inspection 



4. Electric log correlations over long distances 



5. Aerial photographs 



B. Site-specific surveys 

 1. Seismic surveys 



a. Land methods 



1) Explosive charge (1-2 km/day) 



a) Surveyor entry and staking 



b) Clearing of vegetation for roadway 



c) Vehicle entry 



(1) Drilling truck 



(2) Clearing of vegetation for roadway 



(3) Measuring van 



d) Drilling of shot tubes and tube placement 



e) Placement of charges, seismometers, and cable 



f) Shooting 



g) Retrieval of seismometers 

 h) Retrieval of shot tubes 

 i) Clean up of area 



j) Ancillary problems - trash, oil drainage, poaching 

 k) Vehicle exit 



2) Thumper, Dinoseis (1-2 km/day) 



a) Surveyor entry and staking 



b) Clearing of vegetation for roadway 



c) Vehicle entry 



(1) Supply truck 



(2) Measuring van 



(3) Thumper truck 



d) Placement of seismometers and cables 



e) Thumper strikes earth 



f) Retrieval of seismometers and cables 



g) Cleanup of area 



h) Ancillary problems - trash, oil drainage, poaching 

 i) Equipment exit 



b. Water methods (recording methods: 2-6 km/hr) 

 1) Sparkers 



a) Vehicle entry to boat launch (if necessary) 



b) Clear vegetation or dig out area for vessel 

 launching (if necessary) 



c) Launch vessel (if necessary) 



d) Set navigation beacons 



e) Vessel movement to and from shore 



f) Seismic activity and recording on vessel 



g) Retrieval of vessel 

 h) Cleanup of area 



i ) Equipment exit 

 2. Propane - oxygen gun - see steps I.B.l.b.l.a to I.B.l.b.l.i 



3) Vibroesis - see steps I.B.l.b.l.a to I.B.l.b.l.i 



4) Air guns - see steps I.B.l.b.l.a to I.B.l.b.l.i 



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