While-drilling fine time-depth prediction method based on FFC-resistivity
The invention discloses a while-drilling fine time-depth prediction method based on FFC-resistivity. The while-drilling fine time-depth prediction method comprises the steps of: S1, integrating seismic and well logging data, proposing to consider lithological information classification velocity pred...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
02.11.2018
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a while-drilling fine time-depth prediction method based on FFC-resistivity. The while-drilling fine time-depth prediction method comprises the steps of: S1, integrating seismic and well logging data, proposing to consider lithological information classification velocity prediction, and calculating a mudstone velocity value by adopting a formula 1 shown in description; S2,integrating regional well logging data, proposing to consider pore fluid information velocity prediction, and solving a water bearing sandstone velocity by adopting a formula 2 shown in description; S3, calculating a gas reservoir fluid replacing water layer resistivity value, and solving a stratum velocity value by utilizing the mudstone velocity value, a gas-bearing sandstone resistivity value and a water sand resistivity value according to a statistical relation between a resistivity curve and a longitudinal wave velocity curve. The while-drilling fine time-depth prediction method has the beneficial effects of havi |
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Bibliography: | Application Number: CN20181223045 |