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Keywords: pre-stack inversion
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750865
... Due to large buried depth and complicated geological conditions of Paleogene strata in Bohai Oilfield, the seismic data is commonly not amplitude-preserved and thus conventional post-stack methods are often difficult to characterize the reservoirs effectively. Pre-stack inversion can better...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579873
... Joint pre-stack inversion of PP- and PS-wave data is shown to significantly improve estimation of in particular S-impedance but also P-impedance and density. For reservoir characterization, improvements in these parameters can better identify reservoir rock and fluid properties. For reservoir...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215071
... ABSTRACT A pre-stack inversion is performed to estimate elastic properties like VP, VS, r of the earth’s subsurface. Pre-stack inversions are generally solved employing a global or local optimization technique and performed on each CDPs (common-depth-point) separately to estimate the elastic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215455
... parameters such as P-impedance, S-impedance, and density by the integration of pre-stack data and well logs allows us to quantitatively characterize the reservoirs, and to distinguish them from the surrounding rocks. In this study, we use pre-stack inversion of the petrophysical parameters for the gas...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-W6-01
... estimation joint inversion pre-stack inversion frequency native time domain joint ppps-ss inversion reservoir characterization amplitude seg international exposition angle stack elastic property A preliminary look at joint PP-PS-SS inversion in native time domain Benjamin Roure* and Brian...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17776104
... network analysis porosity machine learning inversion reservoir characterization upstream oil & gas resolution multi-linear regression pre-stack inversion neural network analysis annual meeting log data Dafour , J. , J. Squires , A. Edmunds , I. Shook...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17783002
... trachyte reservoir elastic parameter fracture inversion method inversion reservoir prediction upstream oil & gas reservoir characterization volcanic reservoir pre-stack frequency-dependent avo inversion seg seg international exposition pre-stack inversion information facies...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17251390
... characterization upstream oil & gas brittleness pre-stack inversion impedance annual meeting ifp energy nouvelle annual international meeting seismic data wave field quadri-joint inversion inversion quadri-joint multi-component inversion Agullo , Y. , Macé , D. , Labat , K...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13859010
... for a complex parameter space. In 2006, Wei Chao developed the theory of Quantum Monte Carlo and realized the inversion of log data based on Quantum annealing. In 2015, Badr Alulaiw and Mrinal K. Sen applied QA algorithm in a seismic pre-stack inversion to Cana field. The idea of Quantum annealing applied...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13530388
... is known as geology "sweet spot", while the later, we try to analyze here, is named as engineer "sweet spot" or "frackable zones". It has been fully demonstrated that geomechanical properties derived from pre-stack inversion possess a great value for horizontal well design and optimizing completions...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13525149
... for the inversion process to run, constant density acoustic type of wave equation is generally used. It provides us with P-wave velocity information only. Here we extend the work-flow by performing a model based simultaneous pre-stack inversion using the primary velocity information computed from acoustic FWI...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13688732
... anisotropy anisotropy amplitude low frequency pre-stack inversion pass inversion low-frequency model upstream oil & gas mesdag elastic property frequency azimuthal variation reservoir characterization azimuthal inversion anisotropy magnitude azimuth orientation inversion...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13781280
... . Zhang , Y. , Z. Sun , C. Fan , and H. Bai , 2011 , Data conditioning for Pre-stack inversion-A case study from Xingma Area, Liaohe Oil Field, China . 73th Annual International Conference and Exhibition, EAGE, Extended Abstracts , 10.3997/2214-4609.20149593...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13844905
... ABSTRACT Pre-stack inversion is used to generate p-impedance, s-impedance, density and V / V volumes as well as other volumes. However, a density volume that is produced from a pre-stack inversion project is often not reliable because the range of incident angles within the input CDP gathers...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5906165
... prediction pre-stack inversion avo response Summary In this paper we describe a workflow to evaluate amplitude for net-to-gross and net-pay thickness estimation in an unpenetrated area, downdip of a producing reservoir in Gulf of Mexico (GOM) using Ocean Bottom Node (OBN) data. OBN seismic is rich...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5919139
... fluids, DEM-Gassmann rock physic model is employed to address this complex reservoir before pre-stack inversion. Based on the fluid substitution results from a field well, the feasibility of fluid identification at this area is discussed through systematically modeling and pre-stack inversion...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5821194
... Summary Conventional pre-stack inversion for lithologic parameters are mostly based on the approximation formula of the isotropic theory, and it only uses P-P wave data. This method has some shortcomings both in theories and accuracy of invsion, and multi-solution of the inversion is its...

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