IOCAS-IR
Temperature and pressure characteristics of Ordovician gas condensate reservoirs in the Tazhong area, Tarim Basin, northwestern China
Liu, Yifeng1,2,3; Qiu, Nansheng1,2; Hu, Wenxuan3; Li, Huili4; Shen, Fangyu1,2,5; Yao, Qianying6
2019-06-01
Source PublicationAAPG BULLETIN
ISSN0149-1423
Volume103Issue:6Pages:1351-1381
Corresponding AuthorLiu, Yifeng(liuyf1103@foxmail.com)
AbstractThis paper investigates the temperature and pressure distribution characteristics and their evolution in the Upper Ordovician strata in the Tazhong area, Tarim Basin, northwestern China. Based on hundreds of temperature data from boreholes, the present-day temperature ranges from 100 degrees C to 130 degrees C, increasing from the southeast to the northwest and having a "cool" belt in the central fault horst. Pore pressures in the Upper Ordovician reservoirs range from 35 to 62 MPa (5076 to 8992 psi). Overpressures developed in the southwestern region and along the eastern segment of the central fault horst to the northern slope. The Lower Ordovician reservoirs in the east reached 140 degrees C during the Late Ordovician, but those in the west heated continuously and reached the maximum temperature (>130 degrees C) during present day. Paleopressures reconstructed from fluid inclusion data indicate that overpressures caused by hydrocarbon generation were formed in the areas away from fault belts but were absent in the area around the no. 1 fault belt. The temperature evolution indicates that the middle-lower Cambrian source rocks reached gas generation stage (vitrinite reflectance [R-o] > 2.0%) at the end of the Ordovician, whereas the Middle-Upper Ordovician source rocks are still in the high-maturity stage (R-o < 1.3%) at the present day. Deep oil and gas migration is driven by overpressure, and commercial reservoirs are predominantly distributed in the normally pressured zones along the no. 1 fault belt. The formation of gas condensate is controlled by specific temperature and pressure characteristics.
DOI10.1306/1115181617017043
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[2016ZX05007-003] ; China Postdoctoral Science Foundation[2016M601776] ; PetroChina Innovation Foundation[2017D-5007-0102] ; Foundation of State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing[PRP/open-1702]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000474793800004
PublisherAMER ASSOC PETROLEUM GEOLOGIST
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/161945
Collection中国科学院海洋研究所
Corresponding AuthorLiu, Yifeng
Affiliation1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China
2.China Univ Petr, Res Ctr Basin & Reservoir, Beijing, Peoples R China
3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Jiangsu, Peoples R China
4.Sinopec, Explorat & Prod Res Inst, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Qingdao, Shandong, Peoples R China
6.PetroChina Hangzhou Inst Geol, Hangzhou, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yifeng,Qiu, Nansheng,Hu, Wenxuan,et al. Temperature and pressure characteristics of Ordovician gas condensate reservoirs in the Tazhong area, Tarim Basin, northwestern China[J]. AAPG BULLETIN,2019,103(6):1351-1381.
APA Liu, Yifeng,Qiu, Nansheng,Hu, Wenxuan,Li, Huili,Shen, Fangyu,&Yao, Qianying.(2019).Temperature and pressure characteristics of Ordovician gas condensate reservoirs in the Tazhong area, Tarim Basin, northwestern China.AAPG BULLETIN,103(6),1351-1381.
MLA Liu, Yifeng,et al."Temperature and pressure characteristics of Ordovician gas condensate reservoirs in the Tazhong area, Tarim Basin, northwestern China".AAPG BULLETIN 103.6(2019):1351-1381.
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