Integrating geophysical logs for reservoir assessment of paleocene reservoir, Manzalai gas field, Kohat Basin, Pakistan
文献类型：期刊论文
| 作者 | Hussain, Sartaj2,3; Cui, Lan2,3; Hussain, Wakeel1; Ali, Nafees2,3; Gao, Yuan3 |
| 刊名 | CARBONATES AND EVAPORITES
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 40期号:2页码:20 |
| 关键词 | Petrophysical analysis Well logs Manzalai gas field Hangu Formation |
| ISSN号 | 0891-2556 |
| DOI | 10.1007/s13146-025-01107-y |
| 英文摘要 | The Hangu Formation in the Manzalai gas field (MGF), Kohat Basin, Pakistan, carries momentous hydrocarbon potential, yet its reservoir characteristics remain underexplored. This study incorporates advanced petrophysical and soft computing techniques including self-organizing maps (SOMs), cluster analysis, and M/N cross-plots to assess reservoir rock types (RRT), lithofacies, and spatial heterogeneity utilizing geophysical logs from three wells. Results exhibit that the Hangu Formation encompasses quartz-rich sandstone interbedded with minor shale, revealing low shale volume (Vsh: 17-25%), favorable porosity (5-8%), permeability (0.5-12 mD), and high gas saturation (52-62%). SOM-based electrofacies classification recognized three lithotypes: sandstone (dominant), shaly sand, and shale, while cluster analysis designated four reservoir rock types, with facies 1 and 2 showing excellent reservoir quality. The Thomas Stieber model inveterate dispersed and laminated shale distributions. Pickett plot analysis appraised low water saturation (Sw: 38-48%), further authenticated by irreducible water saturation thresholds from Buckles plots. Pearson's correlation investigation exhibited strong positive and negative relationships between log parameters, such as a perfect negative correlation (r = - 1.00) between porosity and bulk density, which improves the consistency of reservoir predictions. Spatial maps highlight NE-trending zones with higher reservoir properties, particularly in Manzalai-04, where an 8% porosity and 12 mD permeability are associated with 62% gas saturation. These petrophysical outcomes align with the geological model, where the quartz-rich sandstone and little shale content imitate a high-energy fluvial/deltaic depositional environment, contributing to the reservoir's quality and categorization.This study emphasizes the Hangu Formation's robust gas potential, providing a data-driven basis for future exploration and enhanced production in the Kohat Basin. |
| 资助项目 | Directorate General of Petroleum Concession (DGPC), Pakistan ; ANSO Scholarship for Young Talents Program ; Chinese Academy of Sciences (UCAS), China[2024-PhD] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001483019700001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36011]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Cui, Lan |
| 作者单位 | 1.China Univ Geosci, Sch Geophys & Geomat, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hussain, Sartaj,Cui, Lan,Hussain, Wakeel,et al. Integrating geophysical logs for reservoir assessment of paleocene reservoir, Manzalai gas field, Kohat Basin, Pakistan[J]. CARBONATES AND EVAPORITES,2025,40(2):20. |
| APA | Hussain, Sartaj,Cui, Lan,Hussain, Wakeel,Ali, Nafees,&Gao, Yuan.(2025).Integrating geophysical logs for reservoir assessment of paleocene reservoir, Manzalai gas field, Kohat Basin, Pakistan.CARBONATES AND EVAPORITES,40(2),20. |
| MLA | Hussain, Sartaj,et al."Integrating geophysical logs for reservoir assessment of paleocene reservoir, Manzalai gas field, Kohat Basin, Pakistan".CARBONATES AND EVAPORITES 40.2(2025):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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