New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin
Amplitude versus offset (AVO) analysis integration to well log analysis is considered one of the advanced techniques to improve the understanding of facies and fluid analysis. Generating AVO attributes are one solution to give an accurate result in facies and fluid characterization. This study is fo...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-11-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/10/21/7786 |
| _version_ | 1797548998262784000 |
|---|---|
| author | Tsara Kamilah Ridwan Maman Hermana Luluan Almanna Lubis Zaky Ahmad Riyadi |
| author_facet | Tsara Kamilah Ridwan Maman Hermana Luluan Almanna Lubis Zaky Ahmad Riyadi |
| author_sort | Tsara Kamilah Ridwan |
| collection | DOAJ |
| description | Amplitude versus offset (AVO) analysis integration to well log analysis is considered one of the advanced techniques to improve the understanding of facies and fluid analysis. Generating AVO attributes are one solution to give an accurate result in facies and fluid characterization. This study is focused on a field of Northern Malay basin, which is associated with a fluvial-deltaic environment, where this system has high heterogeneity, whether it is vertically or horizontally. This research is aimed to demonstrate an application of the scale of quality factor of P-wave (SQp) and the scale of quality factor of S-wave (SQs) AVO attributes for facies and fluid types separation in field scale. These methods are supposed to be more sensitive to predict the hydrocarbons and give less ambiguity. SQp and SQs are the new AVO attributes, which derived from AVO analysis and created according to the intercept product (A) and gradient (B). These new attributes have also been compared to the common method, which is the Scaled Poisson’s Ratio attribute. By comparing with the Scaled Poisson’s Ratio attribute, SQp and SQs attributes are more accurate in determining facies and hydrocarbon. SQp and SQs AVO attributes are integrated with well log data and considered as the best technique to determine facies and fluid distribution. They are interpreted by using angle-stack seismic data based on amplitude contrast on interfaces. Well log data, e.g., density and sonic logs, are used to generate synthetic seismogram and well tie requirements. The volume of shale, volume of coal, porosity, and water saturation logs are used to identify facies and fluid in well log scale. This analysis includes AVO gradient analysis and AVO cross plot to identify the fluid class. Gassmann’s fluid substitution modeling is also generated in the well logs and AVO synthetics for in situ, pure brine, and pure gas cases. The application of the SQp and SQs attributes successfully interpreted facies and fluids distributions in the Northern Malay Basin. |
| first_indexed | 2024-03-10T15:07:38Z |
| format | Article |
| id | doaj.art-fce2e93fe85646eb8b1f3961edd4b486 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T15:07:38Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-fce2e93fe85646eb8b1f3961edd4b4862023-11-20T19:39:35ZengMDPI AGApplied Sciences2076-34172020-11-011021778610.3390/app10217786New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay BasinTsara Kamilah Ridwan0Maman Hermana1Luluan Almanna Lubis2Zaky Ahmad Riyadi3Centre of Seismic Imaging, Department of Geosciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaCentre of Seismic Imaging, Department of Geosciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaCentre of Seismic Imaging, Department of Geosciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaCentre of Seismic Imaging, Department of Geosciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaAmplitude versus offset (AVO) analysis integration to well log analysis is considered one of the advanced techniques to improve the understanding of facies and fluid analysis. Generating AVO attributes are one solution to give an accurate result in facies and fluid characterization. This study is focused on a field of Northern Malay basin, which is associated with a fluvial-deltaic environment, where this system has high heterogeneity, whether it is vertically or horizontally. This research is aimed to demonstrate an application of the scale of quality factor of P-wave (SQp) and the scale of quality factor of S-wave (SQs) AVO attributes for facies and fluid types separation in field scale. These methods are supposed to be more sensitive to predict the hydrocarbons and give less ambiguity. SQp and SQs are the new AVO attributes, which derived from AVO analysis and created according to the intercept product (A) and gradient (B). These new attributes have also been compared to the common method, which is the Scaled Poisson’s Ratio attribute. By comparing with the Scaled Poisson’s Ratio attribute, SQp and SQs attributes are more accurate in determining facies and hydrocarbon. SQp and SQs AVO attributes are integrated with well log data and considered as the best technique to determine facies and fluid distribution. They are interpreted by using angle-stack seismic data based on amplitude contrast on interfaces. Well log data, e.g., density and sonic logs, are used to generate synthetic seismogram and well tie requirements. The volume of shale, volume of coal, porosity, and water saturation logs are used to identify facies and fluid in well log scale. This analysis includes AVO gradient analysis and AVO cross plot to identify the fluid class. Gassmann’s fluid substitution modeling is also generated in the well logs and AVO synthetics for in situ, pure brine, and pure gas cases. The application of the SQp and SQs attributes successfully interpreted facies and fluids distributions in the Northern Malay Basin.https://www.mdpi.com/2076-3417/10/21/7786AVO attributeScaled Poisson’s RatioSQpSQsfaciesfluid |
| spellingShingle | Tsara Kamilah Ridwan Maman Hermana Luluan Almanna Lubis Zaky Ahmad Riyadi New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin Applied Sciences AVO attribute Scaled Poisson’s Ratio SQp SQs facies fluid |
| title | New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin |
| title_full | New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin |
| title_fullStr | New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin |
| title_full_unstemmed | New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin |
| title_short | New AVO Attributes and Their Applications for Facies and Hydrocarbon Prediction: A Case Study from the Northern Malay Basin |
| title_sort | new avo attributes and their applications for facies and hydrocarbon prediction a case study from the northern malay basin |
| topic | AVO attribute Scaled Poisson’s Ratio SQp SQs facies fluid |
| url | https://www.mdpi.com/2076-3417/10/21/7786 |
| work_keys_str_mv | AT tsarakamilahridwan newavoattributesandtheirapplicationsforfaciesandhydrocarbonpredictionacasestudyfromthenorthernmalaybasin AT mamanhermana newavoattributesandtheirapplicationsforfaciesandhydrocarbonpredictionacasestudyfromthenorthernmalaybasin AT luluanalmannalubis newavoattributesandtheirapplicationsforfaciesandhydrocarbonpredictionacasestudyfromthenorthernmalaybasin AT zakyahmadriyadi newavoattributesandtheirapplicationsforfaciesandhydrocarbonpredictionacasestudyfromthenorthernmalaybasin |