Linda Sumrall

• Louisiana State University 1976

• Bachelors of Science in Geology

• Worked for 39 years as a Geophysicist• Gulf Oil

• Union Texas Petroleum

• Energy Development Corporation

• Louisiana Land and Exploration

• Burlington Resources

• Noble Energy

• Explored for oil and gas

• Developed oil and gas fields

With my Twin Daughters

Show and Tell

• Drill Bit

• Core

Data used to Study Earth Layers

• Seismic

• Well Log

Seismic Reflection Data Source

• Loud sound made by

• Air gun

• Dynamite

• Vibrating Truck (Vibroseis)

Seismic Reflection Data

• Sound Bounces off the Layers in the Earth Like an Echo

• Recorded by a Receiver

Layer in the Earth

Source Receiver

Voice EarsWall

Seismic Datasource

Seismic Line Example

Drilling Discoveries

Drilling Discoveries

Drilling a Dry Hole

Drilling a Dry Hole

Earth ChangesPlate Tectonics

The Theory we use to explain the movement of continents