Major Controls on the Evolution of the Cambrian Dolomite Reservoirs in the Keping Area, Tarim Basin

Abstract:

The Cambrian dolomite reservoir is an important target in oil and gas exploration. The Penglaiba section in the Keping area is typically examined in studies dealing with the Cambrian dolomite reservoirs of northwestern Tarim Basin. Based on sedimentological, petrographic, and geochemical data, lithofacies and fluids are identified as the major factors that control the dolomite reservoir in the study area. Lithoacies are fundamental to reservoir evolution because they provide suitable channels for dolomitization and dissolution of fluids that, in turn, facilitate the formation of high quality reservoirs. The lithofacies which could form high-quality reservoirs in the study area are: slope slip (collapse) facies, gypsum related facies, and algae dolomite facies. The sources of fluids include seawater, meteoric freshwater, diagenetic/hydrocarbon fluid, and hydrothermal fluid. These fluids lead to dolomitization, penecontemporaneous meteoric dissolution, hypergene dissolution, organic acid dissolution and hydrothermal dissolution that result in secondary porosity, and as such, they have a significant contribution to reservoir evolution.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 377-383
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.377
• Online since: August 2013
• Authors: Qing Li, Xue Lian You, Wen Xuan Hu, Jing Quan Zhu, Zai Xing Jiang
• Keywords: Dolomite Reservoir, Fluids, Keping Area, Lithofacies, Tarim Basin

References

[1] Sun S D. AAPG Bulletin, 1995, 79:186~204.

[2] He Zhiliang, Wei Xiucheng, Qian Yixiong, et al., , Oil & Gas Geology, 2011, 32(4): 489-498. (In Chinese)

[3] Ma Yongsheng, Cai Xunyu, Zhao Peirong, et al., Acta Geologica Sinica, 2010, 84(8): 1087-1094. (In Chinese)

[4] Jia Chengzao. Structual characteristics and oil/gas accumulative regularity in Tarim Basin[J]. Xinjiang Petroleum Geology, 1999, 20(3): 177-183. (In Chinese)

[5] You Xuelian, Sun Shu, Zhu Jingquan, et al. Earth Science Frontiers, 2011. 18(04)：52-64. (In Chinese)

[6] Shen Anjiang, Wang Zhaoming, Zheng Xingping, et al., Marine Origin Petroleum Geology, 2007, 12（2）：23-32. (In Chinese)

[7] Warren J, Earth-Science Reviews, 2000, (52): 1-81.

[8] Wang Zhenyu, Li Yuping, Chen Jingshan, et al. Scientia Geologica Sinica, 2002, 37: 152-160. (In Chinese)

[9] Zhu Jingquan, Wu Shiqiang, Wang Guoxue, et al. Earth Science Frontiers, 2008, 15(2): 67-79. (In Chinese)

[10] He Kai, Zhu Jingquan, You Xuelian, et al. Journal of Palaeogeography, 2012, (in press). (In Chinese)

[11] Surdam R C, Boese S W, Crossey L J. AAPG Bulletion, 1982, 66: 635.

[12] Zhang Jing, Hu Jianyi, Luo Ping, et al. Petroleum Exploration and Development, 2010, 37(2): 203-210. (In Chinese)

[13] Zhang Huiliang, Wang Zhaoming, Zhang Ronghu, et al. Marine Origin Petroleum Geology, 2005. (02): 23-30. (In Chinese)

[14] Zhang Juntao, Hu Wenxuan, Qian Yixiong, et al. Marine and Petroleum Geology, 2009, 26: 1428-1440.

[15] Xing Fengcun, Zhang Wenhuai, Li Sitian. Acta Petrologica Sinica, 2011, 27(1): 266-276. (In Chinese)

[16] Li Qing, Hu Wenxuan, Qian Yixiong, et al. Oil & Gas Geology, 2011, 32(4): 522-530. (In Chinese)