Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/03291817297 |
Pore structure and spontaneous imbibition characteristics of marine and continental shales in China | |
Gao, Zhiye1,2; Hu, Qinhong3 | |
2018-10-01 | |
发表期刊 | AAPG BULLETIN
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ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2018 |
卷号 | 102期号:10页码:1941-1961 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The pore structure of shale has a significant effect on hydrocarbon migration and the long-term gas supply of shale gas wells. The present study investigates the spontaneous imbibition characteristics to evaluate the pore connectivity and wettability of marine Longmaxi shale samples from the southeastern Chongqing area and continental Yanchang shale samples from the Ordos Basin. The pore-size distribution obtained from N-2 adsorption and mercury intrusion porosimetry, field emission-scanning electron microscopy, and focused ion beam-scanning electron microscopy photos are used to interpret the imbibition behaviors. Our results show that the difference in dominant pore type between marine and continental samples, which is dominated by thermal maturity, controls on their imbibition behaviors as well as their wettability. Organic matter (OM) pores within Yanchang samples are poorly developed because of their low thermal maturity, and a large amount of water-wet inorganic pores are preserved in these samples because of relatively weak compaction. Oil-wet OM pores are well developed in Longmaxi samples with higher thermal maturity, and inorganic pores have been largely eliminated because of strong compaction. The low pore connectivity to water for both the Longmaxi and Yanchang samples is indicated by the low water imbibition slopes. Furthermore, the more oil-wet property of the Longmaxi samples and more water-wet characteristics of the Yanchang samples are obtained by comparing the directional water/oil imbibition slopes. In addition, the positive meaning of quartz in the protection of pore spaces is found in both the Longmaxi and the Yanchang samples used in this study. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447260300002 |
WOS关键词 | MISSISSIPPIAN BARNETT SHALE ; SILURIAN LONGMAXI FORMATION ; TRIASSIC YANCHANG SHALE ; SICHUAN BASIN ; ORDOS BASIN ; GAS-ADSORPTION ; ORGANIC-RICH ; SOUTH CHINA ; POROUS-MEDIA ; MERCURY INTRUSION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24441 |
专题 | 地球科学 |
作者单位 | 1.China Univ Petr, State Key Lab Petr Resources & Prospecting, 18 Fuxue Rd, Beijing 102249, Peoples R China; 2.China Univ Petr, Unconvent Nat Gas Inst, 18 Fuxue Rd, Beijing 102249, Peoples R China; 3.Univ Texas Arlington, Dept Earth & Environm Sci, 701 South Nedderman Dr, Arlington, TX 76019 USA |
推荐引用方式 GB/T 7714 | Gao, Zhiye,Hu, Qinhong. Pore structure and spontaneous imbibition characteristics of marine and continental shales in China[J]. AAPG BULLETIN,2018,102(10):1941-1961. |
APA | Gao, Zhiye,&Hu, Qinhong.(2018).Pore structure and spontaneous imbibition characteristics of marine and continental shales in China.AAPG BULLETIN,102(10),1941-1961. |
MLA | Gao, Zhiye,et al."Pore structure and spontaneous imbibition characteristics of marine and continental shales in China".AAPG BULLETIN 102.10(2018):1941-1961. |
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