Converted waves applied to fracture detection in the Catatumbo area, Colombia
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| Format: | Artículo científico |
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ECOPETROL S.A.
2006
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| author | Saúl-Ernesto Guevara-Ochoa |
| author_facet | Saúl-Ernesto Guevara-Ochoa |
| contents | Converted waves applied to fracture detection in the Catatumbo area, Colombia Saúl-Ernesto Guevara-Ochoa Peter William Cary Ingeniería wave anisotropy seismic method anisotropy means fractures reservoirs The multicomponent (3C) seismic method is an emerging technology, which allows recording the completewave field, including converted (PS) waves. Methods to obtain information about fractured rockshave been developed from these data since anisotropy, an effect of parallel fracture trains, generatesbirefringence of PS waves. We present here an application of this technology to data from an experimentalseismic survey from a setting of NE Colombia. The geological characteristics of this setting were challengingfor the current processing methods. A 3C seismic line following geological strike and another one followingdip were processed. Coherent noise statics correction and velocity analysis required an iterative approach.The presence of polar anisotropy related to stratification, was taken into account for stacking. This approachgreatly improved the resulting section, verifying its suitability.Three seismic sections, each one corresponding to a component, were obtained for the strike line. An azimuthalanisotropy analysis was carried out on them. Significant results were found, that might imply the presenceof natural fracturing directions. This result requires to be tested with complementary geological information.About the dip line processing, the method applied appear unsatisfactory. There were identified shortcomingsof processing related to dipping strata and complex structures, which became worse by the noisy data. Moreadvanced processing methods would be required in this case 2006 artículo científico 0122-5383 https://www.redalyc.org/articulo.oa?id=46530204 en http://www.redalyc.org/revista.oa?id=465 CT&F Ciencia, Tecnología y Futuro application/pdf ECOPETROL S.A. CT&F Ciencia, Tecnología y Futuro (Colombia) Num.2 Vol.3 |
| format | Artículo científico |
| id | redalyc_46530204 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | ECOPETROL S.A. |
| spellingShingle | Converted waves applied to fracture detection in the Catatumbo area, Colombia Saúl-Ernesto Guevara-Ochoa Ingeniería wave anisotropy seismic method anisotropy means fractures reservoirs Converted waves applied to fracture detection in the Catatumbo area, Colombia Saúl-Ernesto Guevara-Ochoa Peter William Cary Ingeniería wave anisotropy seismic method anisotropy means fractures reservoirs The multicomponent (3C) seismic method is an emerging technology, which allows recording the completewave field, including converted (PS) waves. Methods to obtain information about fractured rockshave been developed from these data since anisotropy, an effect of parallel fracture trains, generatesbirefringence of PS waves. We present here an application of this technology to data from an experimentalseismic survey from a setting of NE Colombia. The geological characteristics of this setting were challengingfor the current processing methods. A 3C seismic line following geological strike and another one followingdip were processed. Coherent noise statics correction and velocity analysis required an iterative approach.The presence of polar anisotropy related to stratification, was taken into account for stacking. This approachgreatly improved the resulting section, verifying its suitability.Three seismic sections, each one corresponding to a component, were obtained for the strike line. An azimuthalanisotropy analysis was carried out on them. Significant results were found, that might imply the presenceof natural fracturing directions. This result requires to be tested with complementary geological information.About the dip line processing, the method applied appear unsatisfactory. There were identified shortcomingsof processing related to dipping strata and complex structures, which became worse by the noisy data. Moreadvanced processing methods would be required in this case 2006 artículo científico 0122-5383 https://www.redalyc.org/articulo.oa?id=46530204 en http://www.redalyc.org/revista.oa?id=465 CT&F Ciencia, Tecnología y Futuro application/pdf ECOPETROL S.A. CT&F Ciencia, Tecnología y Futuro (Colombia) Num.2 Vol.3 |
| title | Converted waves applied to fracture detection in the Catatumbo area, Colombia |
| topic | Ingeniería wave anisotropy seismic method anisotropy means fractures reservoirs |
| url | https://www.redalyc.org/articulo.oa?id=46530204 |