Neural networks are powerful tools for solving the complex regression problems which abound in geosciences. Estimation of prediction confidence from neural networks is an important area. Many procedures are available to date, but it is often tedious for practitioners to implement such procedures without significant modification of the existing learning algorithms. In many cases, the procedures ...

Among many approaches been made to improve interpretation of post stack seismic section, a great effort has been made aimed at increasing the resolution power of interpreting section and mapping the seismic reflection data to lithology. The purpose of sparse spike impedance inversion is aimed at this goal, to obtain a high-resolution impedance profile from low resolution or band limited seismic...

The lateral sealing ability of a normal fault is a major factor in creating hydrocarbon traps. Therefore, a methodology for assessing the sealing ability of faults in the siliciclastic sequences of subsidence basins has been established; moreover, by using this methodology, the uncertainty inherent in hydrocarbon exploration can be decreased. Moreover, the petrophysical properties of fault roc...

We developed several novel two-dimensional (2D) NMR core analysis techniques, which not only enhance the analysis of fluid-saturated rock samples, but also open up an unexplored area for petrophysical research. This is different from the conventional one-dimensional (1D) NMR core analysis, in which only the proton population versus relaxation times, i.e., T1,2 distribution, is displayed to char...

Abstract Cretaceous is the key exploration target layer in eastern depression of North Yellow Sea basin, which has a good prospect for oil and gas exploration. Its huge resource potential attracted great attention from petroleum geologists. In this study, main rock types, reservoir space petrophysical characteristics controlling factors are studied through core observation, thin section identif...

INTRODUCTION The advent of a commercial electromagnetic (EM) multicomponent borehole logging tool with capabilities to measure electric anisotropy, has spearheaded efforts to simulate numerically the tool’s response in complex 3D logging environments (Wang and Fang, 2001; Avdeev et al., 2002; and Newman and Alumbaugh, 2002). Modelling formation electric anisotropy effects is of significance to ...

The purpose of this research is to delineate the structures Lower Goru Formation, investigate fluid properties, and clarify hydrocarbon-prone areas through seismic attributes analysis. First, acquired data was matched by interpretation datum. Structural analysis done performing horizon interpretation, fault contour mapping on C-Interval Formation. Hydrocarbon zones were marked with help attribu...