Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield
Abstract The primary purpose of this study is to identify the high reservoir quality area for drilling and perforation of new wells using interrelated geological, petrophysical, and seismic data. Various datasets such as, core analysis data (two wells), petrophysical logs (twenty wells) and 3D seism...
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2025-01-01
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| Series: | Journal of Petroleum Exploration and Production Technology |
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| Online Access: | https://doi.org/10.1007/s13202-024-01909-1 |
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| author | Vali Mehdipour Ahmad Reza Rabbani Ali Kadkhodaie David A. Wood |
| author_facet | Vali Mehdipour Ahmad Reza Rabbani Ali Kadkhodaie David A. Wood |
| author_sort | Vali Mehdipour |
| collection | DOAJ |
| description | Abstract The primary purpose of this study is to identify the high reservoir quality area for drilling and perforation of new wells using interrelated geological, petrophysical, and seismic data. Various datasets such as, core analysis data (two wells), petrophysical logs (twenty wells) and 3D seismic cube were used to consider different scenarios for optimum well placement based on the availability and accuracy of the data. Considering four criteria (structure, reservoir property, fracture network, and heterogeneity), various data were combined to assess reservoir potential. A static reservoir model was constructed to reduce the uncertainty of the well location determination. A range of scenarios were implemented based on this static reservoir model or by relying only on the available seismic data. Electrofacies analysis was conducted to establish representative facies with which to guide the forecasting of locations suitable for drilling the new wells. Six facies were determined based on multi-resolution graph-based clustering (MRGC) method. In parallel, 3D seismic data was applied to determine seismic facies and seismic attributes to identify high-quality reservoir areas for well placement. As high fracture intensity is an essential feature required for high oil/gas production rates, a continuous fracture model (CFM) was constructed, and average intensity fracture maps were developed to determine the best production locations and to avoid low-productivity (or potential loss-of-circulation zones) from a drilling perspective. Some structural issues, such as distances from transition zones and/or faults, were also considered for well-placement purposes. Coefficient of variation (as a heterogeneity criteria) was also taken into account for well-placement decision-making. The results indicate that applying the developed integrated approaches reduces well-placement uncertainty and delineates high-quality reservoir zones (or sweet spots) with more confidence. |
| format | Article |
| id | doaj-art-0df4e9bf3b00422788b9f0effaa6f588 |
| institution | Kabale University |
| issn | 2190-0558 2190-0566 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
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| series | Journal of Petroleum Exploration and Production Technology |
| spelling | doaj-art-0df4e9bf3b00422788b9f0effaa6f5882025-02-09T12:13:25ZengSpringerOpenJournal of Petroleum Exploration and Production Technology2190-05582190-05662025-01-0115111810.1007/s13202-024-01909-1Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfieldVali Mehdipour0Ahmad Reza Rabbani1Ali Kadkhodaie2David A. Wood3Department of Petroleum and Geoenergy Engineering, Amirkabir University of TechnologyDepartment of Petroleum and Geoenergy Engineering, Amirkabir University of TechnologyEarth Sciences Department, Faculty of Natural Science, University of TabrizDWA Energy LimitedAbstract The primary purpose of this study is to identify the high reservoir quality area for drilling and perforation of new wells using interrelated geological, petrophysical, and seismic data. Various datasets such as, core analysis data (two wells), petrophysical logs (twenty wells) and 3D seismic cube were used to consider different scenarios for optimum well placement based on the availability and accuracy of the data. Considering four criteria (structure, reservoir property, fracture network, and heterogeneity), various data were combined to assess reservoir potential. A static reservoir model was constructed to reduce the uncertainty of the well location determination. A range of scenarios were implemented based on this static reservoir model or by relying only on the available seismic data. Electrofacies analysis was conducted to establish representative facies with which to guide the forecasting of locations suitable for drilling the new wells. Six facies were determined based on multi-resolution graph-based clustering (MRGC) method. In parallel, 3D seismic data was applied to determine seismic facies and seismic attributes to identify high-quality reservoir areas for well placement. As high fracture intensity is an essential feature required for high oil/gas production rates, a continuous fracture model (CFM) was constructed, and average intensity fracture maps were developed to determine the best production locations and to avoid low-productivity (or potential loss-of-circulation zones) from a drilling perspective. Some structural issues, such as distances from transition zones and/or faults, were also considered for well-placement purposes. Coefficient of variation (as a heterogeneity criteria) was also taken into account for well-placement decision-making. The results indicate that applying the developed integrated approaches reduces well-placement uncertainty and delineates high-quality reservoir zones (or sweet spots) with more confidence.https://doi.org/10.1007/s13202-024-01909-1SarvakInfill well placementReservoir sweet spotContinuous fracture modelElectrofacies |
| spellingShingle | Vali Mehdipour Ahmad Reza Rabbani Ali Kadkhodaie David A. Wood Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield Journal of Petroleum Exploration and Production Technology Sarvak Infill well placement Reservoir sweet spot Continuous fracture model Electrofacies |
| title | Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield |
| title_full | Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield |
| title_fullStr | Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield |
| title_full_unstemmed | Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield |
| title_short | Exploring integrated approaches for optimal well placement: a compelling case study of the Sarvak carbonate reservoir within an Iranian oilfield |
| title_sort | exploring integrated approaches for optimal well placement a compelling case study of the sarvak carbonate reservoir within an iranian oilfield |
| topic | Sarvak Infill well placement Reservoir sweet spot Continuous fracture model Electrofacies |
| url | https://doi.org/10.1007/s13202-024-01909-1 |
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