reservoir characterization plays an important role in different parts of an industrial project. the results from a reservoir characterization study give insight into rock and fluid properties which can optimize the choice of drilling locations and reduce risk and uncertainty. delineating hydrocarbon bearing zones within a reservoir is the main objective of any seismic reservoir characterization...

Reservoir characterization plays an important role in different parts of an industrial project. The results from a reservoir characterization study give insight into rock and fluid properties which can optimize the choice of drilling locations and reduce risk and uncertainty. Delineating hydrocarbon bearing zones within a reservoir is the main objective of any seismic reservoir characterization...

Elastic impedance (EI) inversion for partial angle stack seismic data is a key technology in reservoir prediction within the oil and gas industry. EI provides consistent framework to invert data, just as AI does post-stack data. The commonly used process by angle. Hence, inverted different angles may be nonconforming, especially with low signal-to-noise ratio. This paper proposes simultaneously...

Amplitude-versus-angle (AVA) inversion for pre-stack seismic data is a key technology in oil and gas reservoir prediction. Conventional AVA contains two main stages. Stage one estimates the relative change rates of P-wave velocity, S-wave velocity density, stage obtains density based on their through trace integration. An alternative way merges these stages to estimate directly. This less sensi...

We describe the stack of partial stabilizations of prestable curves. We use this description to obtain examples of proper morphisms of schemes having no flattening stratification and to obtain results on the existence of global quotient stack presentations in the setting of moduli stack of prestable curves of genus 0 DOI: https://doi.org/10.1112/blms/bds066 Posted at the Zurich Open Repository ...

During the course of negative provocative test for closed-angle glaucoma using pilocarpine and phenylephrine 60% of eyes develop significant reductions in outflow facility at some stage during the test. It is shown that these reductions can be explained by postulating the presence of partial-angle closure since: (1) A random sample (6) of 53 eyes showing an abnormal response subsequently had a ...

The performance of a polarizing beam splitter based on the one-dimensional photonic crystals (1D-PCs), is theoretically investigated. The polarizing beam splitter consists of a symmetric stack of the low-index quarter-wave plates and the high-index half-wave plates with a central defect layer of air. The linear transmission properties of the polarizing beam splitter are numerically simulat...

This paper presents a general framework for deriving tabular algorithms for a very large class of stack-based computations, not only in context-free parsing but in logic programming as well and more generally for all kinds of \information" domains (abstract domains, constraint domains). Tabular algorithms store traces of computations in a table to achieve computation sharing, which is most usef...