Boots – shoes – and leggings
Patent
1979-03-12
1982-02-02
Smith, Jerry
Boots, shoes, and leggings
324323, 324339, 324351, G06F 1520, E21B 4700
Patent
active
043143393
ABSTRACT:
A method of computer generating a subsurface characteristic model which is substantially consistent with readings taken in a well with the well logging device. A set of actual measurement values which represent readings taken over a given depth interval of the well is derived. An initial trial model of the subsurface characteristic under investigation is then selected. The model includes discretely-boundaried beds, the location of boundaries being based on subsurface characteristic data. A simulated measurement value at a particular depth level is generated by applying the approximate response characteristic of the logging device to the model. The simulated measurement value at the particular depth level is compared to the actual measurement value at that depth level and the model is then modified in accordance with the comparison. In a preferred embodiment of the invention, the location of model boundaries are determined by computing the variance of subsurface characteristic data and then selecting model boundaries at local maxima of the variance.
REFERENCES:
patent: 3166709 (1965-01-01), Doll
patent: 3405349 (1968-10-01), Moran
patent: 3457496 (1969-07-01), Schuster
patent: 3457497 (1969-07-01), Schuster
patent: 3457499 (1969-07-01), Tanguy
patent: 3457500 (1969-07-01), Schuster
Schlumberger Limited
Smith Jerry
LandOfFree
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