Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.059
Y. Soares, S. Nogueira, A. Carrasco
Neural networks can learn complex non-linear relationship, even when the input information is noise and less precise. It has made advances in classification, pattern recognition and process modeling. It is well know that shaly formations gives some effects on the reservoir as reduction in storage capacity by reducing effective porosity and reduces the ability to transmit fluids by lowering permeability. The presence of clay in a reservoir has two effects on petrophysical logs: lowers resistivity and it causes the porosity logs (sonic, neutron and density) to generally record too high a porosity (Asquith, 1990). For neural application, the back propagation network was used, taking as reference the well logging and core data from three wells of Namorado Field of Campos Basin (Brazil) Finally, and error analysis was done taking the permeability values obtained from cores as reference.
{"title":"Application of neural networking for calculation of permeability parameters in shaly formations using well logging and core data","authors":"Y. Soares, S. Nogueira, A. Carrasco","doi":"10.22564/16cisbgf2019.059","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.059","url":null,"abstract":"Neural networks can learn complex non-linear relationship, even when the input information is noise and less precise. It has made advances in classification, pattern recognition and process modeling. It is well know that shaly formations gives some effects on the reservoir as reduction in storage capacity by reducing effective porosity and reduces the ability to transmit fluids by lowering permeability. The presence of clay in a reservoir has two effects on petrophysical logs: lowers resistivity and it causes the porosity logs (sonic, neutron and density) to generally record too high a porosity (Asquith, 1990). For neural application, the back propagation network was used, taking as reference the well logging and core data from three wells of Namorado Field of Campos Basin (Brazil) Finally, and error analysis was done taking the permeability values obtained from cores as reference.","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132361675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.060
Tainá Souza, Tiago Barros, R. Lopes
Reflection seismic is a technique widely used for geophysical studies of petroleum. However, during the seismic acquisition, operational obstacles cause the acquired seismic data to be irregular, containing distortions and gaps. This irregular sampling impairs several stages of seismic processing such as imaging, elimination of multiple, migration and inversion. Interpolation and regularization methods can solve both missing data and irregular sampling. Thereby, the regularization of seismic data is an important problem to be addressed. As we intend to show in this work, the common reflection surface method for common offset (CO-CRS) with global attributes search strategy is a good alternative for regularization, since it can reconstruct traces from the acquired data and also is capable of improving the definition of reflection events existing in the data.
{"title":"Application of the CO-CRS method for seismic data regularization","authors":"Tainá Souza, Tiago Barros, R. Lopes","doi":"10.22564/16cisbgf2019.060","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.060","url":null,"abstract":"Reflection seismic is a technique widely used for geophysical studies of petroleum. However, during the seismic acquisition, operational obstacles cause the acquired seismic data to be irregular, containing distortions and gaps. This irregular sampling impairs several stages of seismic processing such as imaging, elimination of multiple, migration and inversion. Interpolation and regularization methods can solve both missing data and irregular sampling. Thereby, the regularization of seismic data is an important problem to be addressed. As we intend to show in this work, the common reflection surface method for common offset (CO-CRS) with global attributes search strategy is a good alternative for regularization, since it can reconstruct traces from the acquired data and also is capable of improving the definition of reflection events existing in the data.","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128107666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.318
L. Cypriano, Ziqing Yu, Denis Ferreira, B. Huard, Roberto Pereira, F. Jouno, A. Khalil, E. Urasaki, Nathalia da Cruz, Ailin Yin, D. Clarke, Carlos Jesus
{"title":"OBN for pre-salt imaging and reservoir monitoring – Potential and road ahead","authors":"L. Cypriano, Ziqing Yu, Denis Ferreira, B. Huard, Roberto Pereira, F. Jouno, A. Khalil, E. Urasaki, Nathalia da Cruz, Ailin Yin, D. Clarke, Carlos Jesus","doi":"10.22564/16cisbgf2019.318","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.318","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128116394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.096
J. Lima, S. Hegna, T. Klüver
{"title":"Continuous wavefields methodology – A field trial in the Potiguar Aracati area, Brazil","authors":"J. Lima, S. Hegna, T. Klüver","doi":"10.22564/16cisbgf2019.096","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.096","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132017058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.011
A. Oliveira, H. Haas
In this paper, an alternative greed algorithm for interpolation/regularization of irregularly-sampled seismic data in the Fourier domain is described in connection with the approximate irregular discrete Fourier transform (AIDFT). The greed algorithm is used to fill in empty bins, generated by defective sampling, under statistical and/or physical constraints, so as to achieve an acceptable Fourier spetrum. Much like in other implementations, a least square norm Fourier spectrum is the input for the process. Here, this least square initial solution is provided by the AIDFT. The greed algorithm proposed is an iterative procedure that consists in, step by step, correcting for survey’s footprints of main Fourier components.
{"title":"A greed algorithm for seismic data interpolation using the approximate irregular discrete Fourier transform","authors":"A. Oliveira, H. Haas","doi":"10.22564/16cisbgf2019.011","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.011","url":null,"abstract":"In this paper, an alternative greed algorithm for interpolation/regularization of irregularly-sampled seismic data in the Fourier domain is described in connection with the approximate irregular discrete Fourier transform (AIDFT). The greed algorithm is used to fill in empty bins, generated by defective sampling, under statistical and/or physical constraints, so as to achieve an acceptable Fourier spetrum. Much like in other implementations, a least square norm Fourier spectrum is the input for the process. Here, this least square initial solution is provided by the AIDFT. The greed algorithm proposed is an iterative procedure that consists in, step by step, correcting for survey’s footprints of main Fourier components.","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134256977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.288
M. A. Carvalho, L. Marinho, C. Dias, A. N. Barreto, V. Santos
{"title":"Relationship between the relaxation time distribution function from IP Effect’s Dias model and petrophysical parameters of reservoir rock samples","authors":"M. A. Carvalho, L. Marinho, C. Dias, A. N. Barreto, V. Santos","doi":"10.22564/16cisbgf2019.288","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.288","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133808406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.315
Thiago Mendes, M. Falleiros, M. de Matos, W. Borges, Carlos Larrosa, Rafael R Felix
{"title":"Seismic acquisition and rotary drilling study to a Hydroelectric Generating Plant (HGP) building in Pindaíba river","authors":"Thiago Mendes, M. Falleiros, M. de Matos, W. Borges, Carlos Larrosa, Rafael R Felix","doi":"10.22564/16cisbgf2019.315","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.315","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133838546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.049
F. Antonelli, F. Ferreira
{"title":"Annual effective dose and air absorbed dose based on airborne and ground gamma-ray spectrometry - Serra do Carambeí and Joaquim Murtinho granites, southern Brazil","authors":"F. Antonelli, F. Ferreira","doi":"10.22564/16cisbgf2019.049","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.049","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122857900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.249
J. Espinoza, I. Zoukaneri, J. Krueger, A. Souza, D. Mondini, T. L. Canu, E. Porto, Roberto Pereira, J. Manrique, B. Cabral, A. Khalil
{"title":"The impact of internal multiple attenuation in pre-salt areas of Santos Basin","authors":"J. Espinoza, I. Zoukaneri, J. Krueger, A. Souza, D. Mondini, T. L. Canu, E. Porto, Roberto Pereira, J. Manrique, B. Cabral, A. Khalil","doi":"10.22564/16cisbgf2019.249","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.249","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128016850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.22564/16cisbgf2019.272
Cleverson Silva, E. Goulart, J. Correa, Ana Santos, Gilberto Raitz, Beatriz Melo
{"title":"Seismic amplitude signal classification applied to seafloor morphological and textural characterization","authors":"Cleverson Silva, E. Goulart, J. Correa, Ana Santos, Gilberto Raitz, Beatriz Melo","doi":"10.22564/16cisbgf2019.272","DOIUrl":"https://doi.org/10.22564/16cisbgf2019.272","url":null,"abstract":"","PeriodicalId":332941,"journal":{"name":"Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121255573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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