Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta
This work presents a modern procedure for understanding seismic data wavelets through well-toseismic tie on an onshore field in the Nigerian Delta using the state-of-the-art techniques. The purpose of this work is the correlation of formation tops and seismic reflectors in the field. The objective...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2021-03-01
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| Series: | Journal of Applied Sciences and Environmental Management |
| Subjects: | |
| Online Access: | https://www.ajol.info/index.php/jasem/article/view/205413 |
| _version_ | 1797228085107490816 |
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| author | S. Inichinbia P.O. Saule |
| author_facet | S. Inichinbia P.O. Saule |
| author_sort | S. Inichinbia |
| collection | DOAJ |
| description |
This work presents a modern procedure for understanding seismic data wavelets through well-toseismic tie on an onshore field in the Nigerian Delta using the state-of-the-art techniques. The purpose of this work is the correlation of formation tops and seismic reflectors in the field. The objectives among others include the calibration of the seismic data in terms of polarity and phase, as well as to ensure that the seismic data is descriptive to well markers and discoveries, extending knowledge from the well location to rest of the field and reducing uncertainties. Logs from the two wells on the field and also logs from three wells on neighbouring fields were used to establish lateral continuity of the reservoirs H1000 and H4000. Their results show that the top, base and thickness of both reservoirs are quite variable laterally and this posed some challenges in the correlation from well to well. The field does not have checkshot data, so checkshot data from one of the wells on the neighbouring field was borrowed. Calibrated sonic and density logs of well01 and well-02 were used to assess the seismic ties at the well locations. Strong correlations at the wells are fundamental to the evaluation of the spatial extent of the horizons around the wells from the seismic data. Seismic-to-well ties are a very important part of the interpreter’s business as they provide a means of correctly identifying horizons to pick, and estimating the wavelet for inverting seismic data to impedance and rock property indicators.
Keywords: Seismic, horizons, correlation, synthetics
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| first_indexed | 2024-04-24T14:51:05Z |
| format | Article |
| id | doaj.art-3b2e1dc2a1dc481eba1aa61f3db7208e |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T14:51:05Z |
| publishDate | 2021-03-01 |
| publisher | Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) |
| record_format | Article |
| series | Journal of Applied Sciences and Environmental Management |
| spelling | doaj.art-3b2e1dc2a1dc481eba1aa61f3db7208e2024-04-02T19:48:32ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992021-03-0125110.4314/jasem.v25i1.7Well-to-Seismic Tie of a Field Onshore of the Nigerian DeltaS. InichinbiaP.O. Saule This work presents a modern procedure for understanding seismic data wavelets through well-toseismic tie on an onshore field in the Nigerian Delta using the state-of-the-art techniques. The purpose of this work is the correlation of formation tops and seismic reflectors in the field. The objectives among others include the calibration of the seismic data in terms of polarity and phase, as well as to ensure that the seismic data is descriptive to well markers and discoveries, extending knowledge from the well location to rest of the field and reducing uncertainties. Logs from the two wells on the field and also logs from three wells on neighbouring fields were used to establish lateral continuity of the reservoirs H1000 and H4000. Their results show that the top, base and thickness of both reservoirs are quite variable laterally and this posed some challenges in the correlation from well to well. The field does not have checkshot data, so checkshot data from one of the wells on the neighbouring field was borrowed. Calibrated sonic and density logs of well01 and well-02 were used to assess the seismic ties at the well locations. Strong correlations at the wells are fundamental to the evaluation of the spatial extent of the horizons around the wells from the seismic data. Seismic-to-well ties are a very important part of the interpreter’s business as they provide a means of correctly identifying horizons to pick, and estimating the wavelet for inverting seismic data to impedance and rock property indicators. Keywords: Seismic, horizons, correlation, synthetics https://www.ajol.info/index.php/jasem/article/view/205413Seismic, horizons, correlation, synthetics |
| spellingShingle | S. Inichinbia P.O. Saule Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta Journal of Applied Sciences and Environmental Management Seismic, horizons, correlation, synthetics |
| title | Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta |
| title_full | Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta |
| title_fullStr | Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta |
| title_full_unstemmed | Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta |
| title_short | Well-to-Seismic Tie of a Field Onshore of the Nigerian Delta |
| title_sort | well to seismic tie of a field onshore of the nigerian delta |
| topic | Seismic, horizons, correlation, synthetics |
| url | https://www.ajol.info/index.php/jasem/article/view/205413 |
| work_keys_str_mv | AT sinichinbia welltoseismictieofafieldonshoreofthenigeriandelta AT posaule welltoseismictieofafieldonshoreofthenigeriandelta |