Title
Geological and computer traps in petroleum exploration
Document Type
Article
Publication Date
1-1-1986
Abstract
Structure contour maps on top of the Viola Limestone in the southern portion of the Forest City Basin were computer contoured for 5-year intervals from 1950 to 1985 using raw data and first-through sixth-degree trend surfaces and residuals. The trend surfaces show maximum improvement in correlation coefficient and sum of squares in 1960. A shift in the position of positive residuals from west to east was located in going from low to higher ordered surfaces. Production was concentrated in the + 60 to + 79-ft residual contour interval. Prediction of residual value is poor for most contour intervals but, for the time interval 1980-1985, is about 75% accurate. Errors are within one contour interval. Combining probabilities gives +60 to +79-ft as the best interval to drill at present. A prediction of remaining producing or show in the area was arrived at by calculating the frequency distribution of all holes drilled and of dry holes drilled for 50-ft contour intervals using Johnson distributions. The result suggests a number of shows and producers yet to be located, particularly in the subsea elevations below - 1800-ft and above - 1500-ft. Potential is best, of course, where these raw data subsea elevations coincide with a positive residual from the third-degree surface of + 60-+ 79-ft. © 1986.
Publication Title
Computers and Geosciences
Recommended Citation
Nordeng, S.,
Ruotsala, A.,
&
Nordeng, S.
(1986).
Geological and computer traps in petroleum exploration.
Computers and Geosciences,
12(4), 527-536.
http://doi.org/10.1016/0098-3004(86)90067-1
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5578