Wilberth Herrera

Wilberth Herrera
University of Texas at Austin | UT · Department of Petroleum & Geosystems Engineering

PhD

About

9
Publications
360
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
33
Citations
Citations since 2017
2 Research Items
24 Citations
20172018201920202021202220230246810
20172018201920202021202220230246810
20172018201920202021202220230246810
20172018201920202021202220230246810

Publications

Publications (9)
Article
Full-text available
In this work a subseries of the ISS is isolated, with the specific task of removing internal multiples of first-order, with downward reflection at the shallowest reflector. The algorithm predicts both the phase and exact amplitude of the internal multiples and does not modify any primary; therefore the internal multiples are removed surgically. Thi...
Article
We develop a new method to process and interpret sonic waveforms acquired in high-angle (HA) and horizontal (HZ) wells in the vicinity of layer boundaries. Numerical simulations are examined for HA/HZ fluid-filled borehole models where sonic tools with monopole and dipole sources operate across a horizontal bed boundary in hard and soft formations,...
Conference Paper
The Inverse Scattering Series (ISS) is capable of directly achieving all processing objectives through specific-task subseries and without any subsurface information. In this work a subseries of the ISS is isolated, with the specific task of removing internal multiples of first-order, with downward reflection at the shallowest reflector. The algori...
Article
Full-text available
In Ramírez (2007), a subseries of the Inverse Scattering Subseries (ISS) was isolated, whose specific task is to eliminate internal multiples of first order. This subseries naturally splits into two subseries: the Leading-Order Internal-Multiple-Eliminator Subseries (LOIMES) and the Higher-Order Internal-Multiple-Eliminator Subseries (HOIMES). The...
Article
Full-text available
In this work we study the generalization of twisted homology to geometric and nongeometric backgrounds. In the process, we describe the necessary conditions to wrap a network of D-branes on twisted cycles. If the cycle is localized in time, we show how by an instantonic brane mediation, some D-branes transform into fluxes on different backgrounds,...
Article
Full-text available
A classification of D-branes in Type IIB Op− orientifolds and orbifolds in terms of Real and equivariant KK-groups is given. We classify D-branes intersecting orientifold planes from which are recovered some special limits such as the spectrum for D-branes on top of Type I Op− orientifold and the bivariant classification of Type I D-branes. The gau...
Article
Full-text available
Gauged WZW and coset models are known to be useful to prove holomorphic factorization of the partition function of WZW and coset models. In this note we show that these gauged models can be also important to quantize the theory in the context of the Berezin formalism. For gauged coset models Berezin quantization procedure also admits a further holo...

Network

Cited By