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Estimation

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Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19142-MS
.... , and Yabusaki , S. B. ( 2013 ). Effects of error covariance structure on estimation of model averaging weights and predictive performance . Water Resources Research , 49 ( 9 ): 6029 – 6047 . Luo , X. , Lorentzen , R. , Valestrand , R. , and Evensen , G. ( 2018 ). Correlation-based...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, November 1–3, 2010
Paper Number: SPE-136304-MS
..., leading to an increase in torque, decrease in force transfer to the bit, and lose control on the bottomhole pressure. Finally, drilling rate decreases. Estimation of total concentration inside the wellbore is not an easy task. Moreover, moving cuttings and fluid dragging them to move have different...
Proceedings Papers

Paper presented at the SPE Production and Operations Conference and Exhibition, June 8–10, 2010
Paper Number: SPE-133555-MS
... Abstract CODE tool is a software built by Eni used to calculate both on and off-shore production plants OPEX estimation during the project development and operations phases. The tool from a database used as reference baseline, through specific algorithm give as output the estimation of the all...
Journal Articles
Int. J. Offshore Polar Eng. 17 (01).
Paper Number: ISOPE-07-17-1-047
Published: 01 March 2007
... temperature estimation laboratory-scale experiment permeability injection differential pressure Methane gas reservoir numerical study sand column MH saturation International Journal of Offshore and Polar Engineering (ISSN 1053-5381) Copyright © by The International Society of Offshore and Polar...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-1103
... . Summary When interpreting reflection seismic data, inaccuracies in estimating correct zero-phase wavelets can often be overlooked. Adverse consequences, such as unknown seismic polarity and phase, well miss-ties, and erroneous structural / stratigraphic interpretation, may not be realized...
Proceedings Papers

Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-1500
... ABSTRACT No preview is available for this paper. upstream oil & gas imaging procedure operator estimation velocity model estimation point location time migrated section bolte geophysics hegge geometry velocity estimation boundary reservoir characterization field part...
Journal Articles
SPE Drill & Compl (2021)
Paper Number: SPE-196179-PA
Published: 16 November 2021
... wells. The objective of this paper is to apply machine-learning (ML) tools to increase precision of the APB estimation, and thereby improve the fluid and casing design for APB mitigation in a given well. The APB estimation methods in literature involve theoretical and computational tools...
Proceedings Papers

Publisher: Unconventional Resources Technology Conference
Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 16–18, 2021
Paper Number: URTEC-208358-MS
... for the identification of top of residual oil zones and producing oil water contact. This estimate is verified by gas chromatograph data from mud logs and core-tube gas analysis. Comparison of gas data and shows in cutting and core clearly indicate a depleted/residual oil zone in close agreement with the overlay...
Journal Articles
SPE Res Eval & Eng 24 (04): 765–779.
Paper Number: SPE-205502-PA
Published: 10 November 2021
...Hesham Mokhtar Ali; Mahmoud Abu El Ela; Ahmed El-Banbi Summary The nonparametric transformation is a data-driven technique, which can be used to estimate optimal correlations between a dependent variable (response) and a set of independent parameters (predictors). This study introduces a systematic...
Journal Articles
SPE Res Eval & Eng (2021)
Paper Number: SPE-208579-PA
Published: 09 November 2021
...A. A. Kasha; A. Sakhaee-Pour; I. A. Hussein Summary Capillary pressure plays an essential role in controlling multiphase flow in porous media and is often difficult to be estimated at subsurface conditions. The Leverett capillary pressure function J provides a convenient tool to address...
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/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580936
... The amplitudes of depth-migrated seismic data can be biased by uneven illumination in the presence of complex geology and/or limitations of the acquisition geometry. If not accounted for, the imprint of non-geological illumination variations compromises acoustic or elastic properties estimated...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580679
... of estimating the wavefield emitted from the seismic vessel using data recorded by towed streamers and using this wavefield for imaging the subsurface. After a description of a method for estimating the acoustic wavefield generated by the seismic vessel from towed streamer data acquired without an active source...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581975
...The estimation of permeability using the shape parameter of the Weibull distribution Ryo Masumura, Hitoshi Mikada, Junichi Takekawa (Kyoto University) Summary Suppose we can find some relationship between the permeability and the Weibull distribution parameters. It In the present study, we...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583573
... independent lateral components of the strain carried by seismic waves (primarily ground roll in this case). Both straight and helically wound fibre are included in the DDS. The resulting estimated tensors are almost identical for both fiber types after trace scaling. The amplitudes of the strain-rate tensors...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3577905
... saturation estimation and uncertainty evaluation by modeling-data-driven gaussian mixture conditional generative adversarial networks Shuai Sun1*, Junguang Nie2, Zhipeng Qu3, Yuanfeng Cheng3, Xingmou Wang3, Jianbing Zhu3, Jianhua Geng1, 2 1 State Key Laboratory of Marine Geology, Tongji University 2 School...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584963
... Predicting high Total Organic Carbon (TOC) zones within an unconventional reservoir is very important to determine favorable geological areas for producing oil and gas. In this paper, we use combined analysis of seismic attributes and well logs for estimating probable TOC values among a portion...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3585407
... come from one designated direction and simulate several urban DAS ambient noise data with different Rayleigh to Love waves ratios (RLrs). Then we estimate the RLrs from each synthetic data. The results show that the estimated ratios generally match the references. Finally, we apply this method to two...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582868
... deviation machine learning test data decision tree learning applied geoscience porosity estimation reservoir property uncertainty quantification estimation A Random Forest regressor based uncertainty quantification of porosity estimation from multiple seismic attributes Caifeng Zou*, Luanxiao...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583265
... Wavefront attributes, such as local dips and curvatures of seismic events, are used in different seismic data processing methods, from prestack data enhancement to migration to tomography. The attributes’ estimation for prestack data is a time-consuming and computationally expensive process. We...

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