Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes
Determining the timing of fracturing is crucial for understanding reservoir evolution and hydrocarbon accumulation in foreland basins. Using fracturing data from cores, borehole images, and outcrops, combined with the clumped isotope (Δ47) and fluid inclusion analyses of carbonate minerals filled in...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-04-01
|
| Series: | Energy Geoscience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666759223001051 |
| _version_ | 1797200823441162240 |
|---|---|
| author | Guoding Yu Wenfang Yuan Kelai Xi Yin Liu Shuai Wang Zhenping Xu Jing Yuan Lu Zhou Keyu Liu |
| author_facet | Guoding Yu Wenfang Yuan Kelai Xi Yin Liu Shuai Wang Zhenping Xu Jing Yuan Lu Zhou Keyu Liu |
| author_sort | Guoding Yu |
| collection | DOAJ |
| description | Determining the timing of fracturing is crucial for understanding reservoir evolution and hydrocarbon accumulation in foreland basins. Using fracturing data from cores, borehole images, and outcrops, combined with the clumped isotope (Δ47) and fluid inclusion analyses of carbonate minerals filled in pores and fractures, this study ascertained the fracturing timing of the Jurassic reservoirs in the Dibei-Tuziluoke Gas Field, Kuqa Foreland Basin. Data from outcrops and borehole images show two dominant fracture sets in the study area: W-E and NE-SW striking fractures. Some W-E striking fractures are carbonate-filled, while NE-SW striking fractures lack mineral fillings. Bitumen veins, not easy to be identified in borehole images, are prevalent in cores. The petrographic analysis reveals that these bitumen veins formed before the calcite cementation in pores and display high viscosity and low maturity. Homogenization temperatures (Th) from primary fluid inclusion assemblages in two representative calcite vein samples were notably lower than TΔ47 values from corresponding samples. This suggests the Δ47 signature underwent alteration due to partial reordering during burial. Thus, Δ47-derived temperatures (apparent temperatures) may not faithfully represent the mineral precipitation temperatures. When plotting these apparent temperatures vs. the burial history, only the possible latest ages of fracturing emerged. These ages were further refined by considering petroleum charging, tectonic evolution, and stress orientation. Bitumen-filled fractures likely resulted from the Late Cretaceous uplift, marking the migration of low-maturity hydrocarbons in the study area. Carbonate-filled E-W striking fractures emerged during the late Miocene (∼13–6.5 Ma) alongside fold development. NE-striking fractures that crosscut W-E ones possibly formed recently due to stress reorientation. |
| first_indexed | 2024-03-10T23:30:07Z |
| format | Article |
| id | doaj.art-cd30bffc1c7e48c3aaa4349128a9b541 |
| institution | Directory Open Access Journal |
| issn | 2666-7592 |
| language | English |
| last_indexed | 2024-04-24T07:37:46Z |
| publishDate | 2024-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy Geoscience |
| spelling | doaj.art-cd30bffc1c7e48c3aaa4349128a9b5412024-04-20T04:17:56ZengKeAi Communications Co., Ltd.Energy Geoscience2666-75922024-04-0152100259Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopesGuoding Yu0Wenfang Yuan1Kelai Xi2Yin Liu3Shuai Wang4Zhenping Xu5Jing Yuan6Lu Zhou7Keyu Liu8Key Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, ChinaResearch Institute of Petroleum Exploration and Development, Tarim Oil Field, CNPC, Korla, 841000, ChinaKey Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, China; Corresponding author.Key Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, ChinaKey Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, ChinaResearch Institute of Petroleum Exploration and Development, Tarim Oil Field, CNPC, Korla, 841000, ChinaKey Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, ChinaResearch Institute of Petroleum Exploration and Development, Tarim Oil Field, CNPC, Korla, 841000, ChinaKey Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao, Shandong, 266580, ChinaDetermining the timing of fracturing is crucial for understanding reservoir evolution and hydrocarbon accumulation in foreland basins. Using fracturing data from cores, borehole images, and outcrops, combined with the clumped isotope (Δ47) and fluid inclusion analyses of carbonate minerals filled in pores and fractures, this study ascertained the fracturing timing of the Jurassic reservoirs in the Dibei-Tuziluoke Gas Field, Kuqa Foreland Basin. Data from outcrops and borehole images show two dominant fracture sets in the study area: W-E and NE-SW striking fractures. Some W-E striking fractures are carbonate-filled, while NE-SW striking fractures lack mineral fillings. Bitumen veins, not easy to be identified in borehole images, are prevalent in cores. The petrographic analysis reveals that these bitumen veins formed before the calcite cementation in pores and display high viscosity and low maturity. Homogenization temperatures (Th) from primary fluid inclusion assemblages in two representative calcite vein samples were notably lower than TΔ47 values from corresponding samples. This suggests the Δ47 signature underwent alteration due to partial reordering during burial. Thus, Δ47-derived temperatures (apparent temperatures) may not faithfully represent the mineral precipitation temperatures. When plotting these apparent temperatures vs. the burial history, only the possible latest ages of fracturing emerged. These ages were further refined by considering petroleum charging, tectonic evolution, and stress orientation. Bitumen-filled fractures likely resulted from the Late Cretaceous uplift, marking the migration of low-maturity hydrocarbons in the study area. Carbonate-filled E-W striking fractures emerged during the late Miocene (∼13–6.5 Ma) alongside fold development. NE-striking fractures that crosscut W-E ones possibly formed recently due to stress reorientation.http://www.sciencedirect.com/science/article/pii/S2666759223001051FractureBorehole imagingBitumen veinClumped isotopeFracturing timing |
| spellingShingle | Guoding Yu Wenfang Yuan Kelai Xi Yin Liu Shuai Wang Zhenping Xu Jing Yuan Lu Zhou Keyu Liu Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes Energy Geoscience Fracture Borehole imaging Bitumen vein Clumped isotope Fracturing timing |
| title | Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes |
| title_full | Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes |
| title_fullStr | Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes |
| title_full_unstemmed | Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes |
| title_short | Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes |
| title_sort | fracturing timing of jurassic reservoirs in the dibei tuziluoke gas field kuqa foreland basin evidence from petrography fluid inclusions and clumped isotopes |
| topic | Fracture Borehole imaging Bitumen vein Clumped isotope Fracturing timing |
| url | http://www.sciencedirect.com/science/article/pii/S2666759223001051 |
| work_keys_str_mv | AT guodingyu fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT wenfangyuan fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT kelaixi fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT yinliu fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT shuaiwang fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT zhenpingxu fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT jingyuan fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT luzhou fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes AT keyuliu fracturingtimingofjurassicreservoirsinthedibeituziluokegasfieldkuqaforelandbasinevidencefrompetrographyfluidinclusionsandclumpedisotopes |