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Nekhoroshkov A.M.
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amnekhoroshkov@tnnc.rosneft.ru |
“Tyumen petroleum research center” LLC Tyumen |
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Novokreshchin A.V.
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avnovokreschin@tnnc.rosneft.ru |
“Tyumen petroleum research center” LLC Tyumen |
DOI: 10.24412/2076-6785-2023-8-20-24
Abstract
The paper considers some conventional methods used for building structural maps of net reservoirs. Two-dimensional forecast of the average velocity that is based on the difference in geometry of lower and upper reflectors is proposed as an alternative. In case of the dynamically expressed and confidently traced upper reflector, the proposed method can be used as an alternative tool in order to improve the accuracy of structural maps.
Materials and methods
Materials: geological and geophysical, field information, results interpretation of seismic data.
Methods: estimation of the standard error determining the depths of the top of the VB1 productive reservoir based on empirical dependencies: two-way time – depth, effective depth (the product of the two-way time of the reflected wave and the effective velocity of the reflected wave) –
depth, estimated optimal depth (the product of the two-way time of the reflected wave and the average estimated velocity obtained on the basis of two-dimensional regression) – depth.
Keywords
velocity model, reflector, regression, empirical dependence, standard deviation, two-dimensional forecast
