Effects of mix-wet porous mediums on gas flowing and one mechanism for gas migration
文献类型：期刊论文
| 作者 | Shi Hui1; Luo Xiaorong1; Li Xing2; Liu Naigui1; Qi Yukai1; Fang Tao2; Zhang Likuan1; Lei Yuhong1 |
| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 152页码:60-66 |
| 关键词 | Mixed Wettability Gas Migration Imbibition Low-permeability Reservoir Nuclear Magnetic Resonance |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petro1.2017.02.009 |
| 文献子类 | Article |
| 英文摘要 | Mixed wetting pores commonly develop in oil and gas sandstone reservoirs and affect the percolation behavior of multiphase flows; thus, these pores represent a key problem that is frequently addressed in studies on hydrocarbon migration and accumulation and oil recovery enhancement. This paper aims to determine the effects of oil-wetting pores on gas migration in a mixed porous medium. We have conducted gas migration experiments in mixed wetting bead models saturated with water in which the beads were composed of oil wetting and water-wetting beads. Nuclear magnetic resonance is employed to investigate the migration processes and elucidate the mechanisms under which gas flows freely in mixed wetting pores. The experimental results indicate that the likelihood of gas migration driven by buoyancy increases with the fraction of oil-wetting grains in the mixed wetting models as a logarithmic function. Gas migrates spontaneously in mixed pore media with more than 60% oil-wetting beads. Oil-wetting pore throats that are mainly composed of oil-wetting grains also improve the dynamic conditions that favor the migration of gas phase. The connectivity of oil-wetting pore throats in the vertical dimension is critical for the free migration of gas in mixed wetting porous media. Gas can only invade porous media by spontaneous imbibition after sufficient oil-wetting components are available to form a continuous pathway for the nonaqueous phase. Early oil emplacements have been widely identified in low-permeability sandstone reservoirs of various gas plays, and they can lead to wettability alterations of some grain surfaces. The creation of mixed wetting conditions may offset the decreased reservoir quality for late gas migration in terms of nonaqueous fluid flows. |
| WOS关键词 | PORE-THROAT SIZES ; SPONTANEOUS IMBIBITION ; TIGHT SANDSTONES ; OIL-RECOVERY ; WETTABILITY ; SYSTEMS ; ENTRAPMENT ; POROSITY ; SHALES ; WATER |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000401042000006 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China(41372151 ; CAS-CNPC Strategic Cooperation Project(RIPED-2015-JS-272) ; 41102078) ; National Natural Science Foundation of China(41372151 ; CAS-CNPC Strategic Cooperation Project(RIPED-2015-JS-272) ; 41102078) ; National Natural Science Foundation of China(41372151 ; CAS-CNPC Strategic Cooperation Project(RIPED-2015-JS-272) ; 41102078) ; National Natural Science Foundation of China(41372151 ; CAS-CNPC Strategic Cooperation Project(RIPED-2015-JS-272) ; 41102078) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/52916]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Luo Xiaorong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.China Univ Petr, Sch Geosicences, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi Hui,Luo Xiaorong,Li Xing,et al. Effects of mix-wet porous mediums on gas flowing and one mechanism for gas migration[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2017,152:60-66. |
| APA | Shi Hui.,Luo Xiaorong.,Li Xing.,Liu Naigui.,Qi Yukai.,...&Lei Yuhong.(2017).Effects of mix-wet porous mediums on gas flowing and one mechanism for gas migration.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,152,60-66. |
| MLA | Shi Hui,et al."Effects of mix-wet porous mediums on gas flowing and one mechanism for gas migration".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 152(2017):60-66. |
入库方式： OAI收割
来源：地质与地球物理研究所
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