Inversion-based petrophysical interpretation of logging-while-drilling nuclear and resistivity measurements
نویسندگان
چکیده
منابع مشابه
Schemes for improving efficiency of pixel-based inversion algorithms for electromagnetic logging- while-drilling measurements
We present an application of the two-and-half dimensional (2.5D) multiplicative-regularized Gauss-Newton inversion method for the interpretation of the directional resistivity measurements [electromagnetic logging-while-drilling (LWD) measurements]. In this work, an inversion algorithm is employed for obtaining a two-dimensional (2D) resistivity distribution (pixel-based) of the subsurface. Sev...
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We simulate electromagnetic (EM) measurements acquired with a logging-while-drilling (LWD) instrument in a borehole environment. The measurements are used to assess electrical properties of rock formations. Logging instruments as well as rock formation properties are assumed to exhibit axial symmetry around the axis of a vertical borehole. The simulations are performed with a self-adaptive goal...
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Petrophysical information is sometimes available from well logs, laboratory measurements, etc. It has been shown that incorporation of such information into geophysical inversions can greatly improve the recovered models. However, when the known petrophysical information is not applicable throughout the entire region, the application of petrophysical constraints to geophysical inversions could ...
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ژورنال
عنوان ژورنال: GEOPHYSICS
سال: 2013
ISSN: 0016-8033,1942-2156
DOI: 10.1190/geo2013-0175.1