...-resolution, representative earth model. The model building workflow implemented full-waveform inversion (FWI) with multiple frequency bands, using an enhanced template matching (ETM) objective function, followed by multi-azimuth common image point tomography with well-depth marker constraints. This model...

... reservoir simulation artificial intelligence upstream oil & gas exploration geophysicist 10 algorithm bayesian inference problem uncertainty quantification tmcmc algorithm underground formation characterization seg international exposition earth model markov chain monte carlo sampling...

... of a meshfree model discretization is that issues related to stability and efficiency in generating quality meshes in order to conform to complex geometries in an earth model can be avoided. The proposed meshfree method also supports the use of unstructured points and avoids numerical quadrature...

... of the subsurface. The preliminary An earth model of the CaMI-FRS inter-well subsurface inversion based on the current seismic baseline datasets (OB1-OB2) was built based on by linear interpolation from shows a good match between calculated and modeled P- compressional wave velocity logs acquired in OB1 and OB2...

...Ocean-bottom node and full-waveform inversion for high-resolution earth model, deep-offshore Nigeria Suyang Chen1, Netifetu Usman-Lecky1, Tamunoemi Okougbo1, Emmanuel Saragoussi1, Jean-Patrick Mascomère 2, Eric Tawile 2, Salvador Pou Palomé 2, Tapesh Tyagi 2, Olatunbosun Olagundoye 2 1IDSL...

... Type: Oral seg international exposition reservoir characterization time-reverse imaging witten imaging condition media earth model s-wave velocity model shragge eic gather perturbation ps energy velocity model upstream oil & gas geophysics anisotropy separation sensitivity...

... Method (FEM). Reversible jump Markov chain Monte Carlo (rjMCMC) method is applied with SEM for inversion, and we introduce supervised classification to support the rjMCMC for mesh partitioning to define geologic layers as classified groups. Synthetic shallow earth models, generated from soil profiles...

... frontier area. In this work, we illustrate how exploration risks were mitigated through contemporary controlled phase and amplitude broadband processing, interpretation-guided earth model building, multiphysics input to interpretation, and integrated reconnaissance AVO inversion. Presentation Date...

... Presentation Time: 10:35 AM Location: 221B Presentation Type: Oral velocity model operto earth model approximation seg international exposition field data procedure reservoir characterization full waveform inversion waveform inversion western australian data full-waveform inversion...

... multiples and converted waves, assuming all surface multiples have been removed. We created an elastic forward-modeled synthetic propagating through an earth model based on key features or challenges of the area. Then, we implemented different coherent-noise-attenuation techniques as a proof of concept...

... ABSTRACT In this work, we solve the seismic inversion problem of obtaining an elastic model of the subsurface from recorded seismic data using a convolutional neural network (CNN). For simplicity we consider a 1D layered earth model and normal incidence seismic data. We systematically test...

... aem forward modeling earth model aem response basis function modeling seg international exposition integration meshfree method relative error subdivision accuracy forward modeling mesh subdivision reservoir characterization coefficient matrix conductivity numerical integration...

... ABSTRACT The advancement in azimuthal propagation resistivity tools enables them to see much further into the formation compared to previous tools, which indicates that multiple layers earth models are necessary for inversion. However, the multilayer inversion is of tentimes highly nonlinear...

... as an integrated team to meet the project objectives. The project utilized a multifaceted approach of combining ocean-bottom node seismic data, optimizing preprocessing, building a high-resolution earth model, and using high-end imaging techniques to significantly improve the overall quality of the seismic image...

... the earth model. Presentation Date: Thursday, October 18, 2018 Start Time: 8:30:00 AM Location: 204C (Anaheim Convention Center) Presentation Type: Oral depth-domain inversion boundary seismic image earth model inversion upstream oil & gas illumination effect annual meeting gulf case...

... ABSTRACT Geosteering inverse problems become challenging since the new generation of extra-deep EM geosteering tools with a much larger depth of detection has emerged on the market. The earth model to be inverted will have more detailed layer structures. Hence, the associated inverse problems...

... ABSTRACT In this paper we describe a data classification method that is designed to estimate pore fluid type. In practice, this method will use Vp, Vs, density, porosity and pore fluid type information from well logs to estimate pore fluid type in an earth model where Vp, Vs and density have...

... ABSTRACT Acquisition of appropriate and fit to purpose geophysical data can reduce exploration risk and improve efficiency. If there is a real strategy behind the acquisition and integration of multi-geophysical data, a less uncertain earth model can be produced. Two case studies illustrate...

... ABSTRACT Conventional full waveform inversion (FWI) has been extensively applied to real seismic data and has successfully generated high-fidelity earth models for better seismic imaging and structural interpretation. Considering the nonlinearity and illposedness of the problem...

... a more realistic air/earth model. Presentation Date: Tuesday, October 18, 2016 Start Time: 11:35:00 AM Location: 140 Presentation Type: ORAL weglein reference medium traction reservoir characterization receiver displacement ground roll assumption annual international meeting vacuum...