A Regression-Fractal Interpolation Method for Reversing Log Shear Wave Time Difference
A technology of shear wave time difference and fractal interpolation, which is used in earthwork drilling, wellbore/well components, geophysical measurement, etc. It can solve the problems affecting the accuracy of rock mechanical parameter calculation, weakening the difference of longitudinal and shear waves, etc., and achieve high practical value. , the effect of low prediction accuracy
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[0030] The patent of the present invention takes the Y285 block of Huaqing Oilfield as an example to illustrate the specific implementation project of the present invention. Huaqing Oilfield is located in Huachi County, Gansu Province, with an area of about 300 square kilometers. It belongs to the loess plateau landform. The surface is covered by Quaternary loess with a thickness of 100-200m. In the deep valley cut by the river, exposed rocks can be seen. The ground elevation is 1350-1660m, and the relative height difference is about 310m. Belongs to the southern part of the northern Shaanxi slope in the Ordos Basin, a local uplift formed by differential compaction, generally a gentle west-dipping monocline, with east-west low-amplitude row-like nose-shaped uplifts developed on the monocline background; it belongs to lithologic oil reservoirs, deltas In frontal lake bottom slump turbidite fan sedimentary system, the distribution direction of sand bodies is generally northea...
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