Origin and distribution model of the lower Paleozoic carbonate reservoirs in Pingfangwang-Pingnan buried hills, Dongying Sag

被引：0
|
作者：
Cheng X. [1 ]
Cao Y. [1 ,2 ]
Yuan G. [1 ,2 ]
Wang Y. [1 ,2 ]
Zan N. [1 ]
机构：
[1] Key Laboratory of Deep Oil and Gas in China University of Petroleum(East China), Qingdao
[2] Function Laboratory of Marine Geo-Resource Evaluation and Exploration Technology, Qingdao
来源：
Cao, Yingchang (cyc8391680@163.com) | 1600年 / University of Petroleum, China卷 / 44期
关键词：
Carbonate rocks; Distribution model; Origin of reservoirs; Pingfangwang-Pingnan buried hills; The lower Paleozoic;
D O I：
10.3969/j.issn.1673-5005.2020.03.001
中图分类号：
学科分类号：
摘要：
In view of the complexity of both the distribution and origin of the lower Paleozoic carbonate reservoirs in the Bohai Bay Basin as well as its importance to hydrocarbon exploration, the characters and origin of the lower Paleozoic carbonate reservoirs of Pingfangwang-Pingnan buried hills in Dongying Sag were studied using drilling cores and production data as well as a combination of conventional petrophysical property analysis, thin section analysis and element geochemistry. The distribution model of the reservoirs was established accordingly. The results show that the reservoirs are dominated by secondary pores, caves and fissures. The complex origin and distribution of the reservoirs resulted from a combination of several geological processes, such as epikarst, faulting and magma intrusion. The monadnock-type buried hills experienced two generations of epikarst which took place in the Caledonian and Indosinian-Yanshan stages, resulting in the pore-cave-fissure compound reservoirs at the top of the buried hills. Meanwhile, the magma intrusion at the lower part and accompanied dissolution led to pore-fissure type inner reservoirs. As for the fault block buried hills, the fracturing effect of fault or its combination with the Caledonian stage epikarst caused pore-cave-fissure compound reservoirs at the top of the buried hills. The lower part is characterized by induced joints caused by faults or magma intrusion with a small portion of dissolution, forming pore-fissure type inner reservoirs. © 2020, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.
引用
收藏
页码：1 / 14
页数：13
相关论文
共 35 条
  • [1] ZHANG Kuihua, MA Liquan, Restudy of inner reservoir of buried hill of low-Paleozoic carbonate rocks in Jiyang Depression, Petroleum Geology and Recovery Efficiency, 14, 4, pp. 26-28, (2007)
  • [2] LI Xin, YAN Weipeng, CUI Zhouqi, Et al., Prospecting potential and targets of buried-hill oil and gas reservoirs in Bohai Bay Basin, Petroleum Geology and Experiment, 34, 2, pp. 140-152, (2012)
  • [3] WANG Yongshi, LI Jiyan, Characteristics and main controlling factors of layered reservoir in buried hill of carbonate rock in Pingfangwang Oilfield, Jiyang Depression, Journal of China University of Petroleum(Edition of Natural Science), 41, 4, pp. 27-35, (2017)
  • [4] ZHAO Xianzheng, WU Zhaohui, YAN Baoyi, Et al., Distribution and types of buried hill oil-gas reservoir in Jizhong Depression, Xinjiang Petroleum Geology, 31, 1, pp. 4-6, (2010)
  • [5] MA Lichi, Genetic study of inner buried hill reservoirs in lower Palaeozoic of Jiyang Depression, Special Oil and Gas Reservoir, 10, 3, pp. 13-14, (2003)
  • [6] YANG Minghui, Diversity of buried-hill sand comparison of their hydrocarbon-pooling factors in the Bohai Bay Basin, Oil & Gas Geology, 29, 5, pp. 623-630, (2008)
  • [7] WANG Zongli, LI Jun, LI Zhengwen, Et al., Hydrocarbon accumulation characters and exploration prospects of deep-seated oil-gas reservoirs in Bohai Bay basin, Marine Geology & Quaternary Geology, 30, 3, pp. 105-112, (2010)
  • [8] GAO Changhai, ZHANG Xinzheng, ZHA Ming, Et al., Characteristics of buried hill reservoir in Jizhong Depression, Lithologic Reservoirs, 23, 6, pp. 6-12, (2011)
  • [9] WU Xingning, LI Guojun, TIAN Jiqiang, Et al., Characters and main controlling factors of reservoir in carbonate rock buried hill in Jizhong Depression, Special Oil & Gas Reservoirs, 18, 2, pp. 22-25, (2011)
  • [10] ZHAO Xianzheng, WANG Quan, JIN Fengming, Et al., Main controlling factors and exploration practice of subtle buried-hill hydrocarbon reservoir in Jizhong Depression, Acta Petrolei Sinica, 33, pp. 71-79, (2012)
1234