Lunchbox Geophysics

Picking the Sweet Spot using Rock Physics

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Ken Titchkosky & Richard Thompson

Sunday, October 21st, 2007 – 12:00 PM MST
Aquitaine Auditorium, +15 level of 540 - 5 Avenue SW

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LunchBox Geophysics is free! Simply bring your own lunch (refreshments provided) and enjoy.


This paper presents the case histories of drilling three successful cretaceous gas sand wells in the WCSB using seismic and rock physics. Ordinary seismic data is used to obtain two key sections of rock properties.

  1. incompressibility of the rock (lambda*rho). This parameter is sensitive to pore fluid type.
  2. rigidity of the rock (mu*rho). This parameter is sensitive to the rock matrix or the lithology.

This presentation goes through the actual steps of interpreting the seismic and rock properties sections as well as the crossplots to show how we:

  1. reduced the risk for drilling well #1.
  2. prevented a shale plug from being drilled for well #2.
  3. confirmed that a bright spot on the seismic section was not a tight streak.

Well #1 and #2 were both producing at about 2 mmcf per day while well #3 has no production data as it was not near a pipeline. Well #3 does have 3 good reservoir gas zones as seen on the logs and the sections. This practical approach using live examples really helps the geophysicist and geologist understand how this AVO/LMR technology can be used to effectively pick the sweet spot.


Ken Titchkosky graduated from the University of Manitoba with a B.Sc. in honours math and physics. He did post graduate work in fourier analysis at the University of Toronto and received a masters in mathematics. Ken is currently the seismic processing operations manager for RPS Energy Canada.

Richard Thompson graduated from the University of Manitoba with a B.Sc. in geophysics. Recently employed by Cypress Energy, Primewest Energy & Cequel Energy. Richard is currently V.P. Exploration at Cyries Energy.