Accumulation condition and exploration direction of natural gas in the central paleo-uplift belt of the northern Songliao Basin

被引：0
|
作者：
Sun L. [1 ]
Lu J. [1 ]
Yang B. [1 ]
Liu J. [1 ]
Li J. [1 ]
Zhang Y. [1 ]
Dai S. [1 ]
Xu Y. [1 ]
Cai D. [1 ]
机构：
[1] Exploration and Development Research Institute, Daqing Oilfield Limited Company, Daqing
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2020年 / 41卷 / 10期
关键词：
Bedrock weathering crust; Central paleo-uplift belt; Gas accumulation condition; Inner bedrock; Northern Songliao Basin;
D O I：
10.7623/syxb202010001
中图分类号：
学科分类号：
摘要：
The central paleo-uplift belt is one of the important exploration fields in Songliao Basin. The exploration discoveries of Well LP1 and Well LT2 in the Changde uplift show that the central paleo-uplift belt has good exploration prospects. By analyzing the structural characteristics, gas source conditions, reservoir characteristics, caprock conditions and accumulation pattern of deep gas in the central paleo-uplift belt of Songliao Basin, this paper expects to re-understand the accumulation conditions of gas in the central paleo-uplift belt and points out favorable exploration zones and exploration directions. The study shows that the source rocks of Shahezi Formation in the Xujiaweizi fault depression are characterized by large hydrocarbon generation intensity, sufficient gas source, and large hydrocarbon-supplying window. The gas accumulation pattern is shown as a "late gas generation in old reservoir" type. Large-scale structures developed under the tectonic setting of intense compression in the early period and continuous extension in the later period provide good trap conditions for the migration and accumulation of gas. A large area of weathering crust reservoir formed by long-term denudation of the central paleo-uplift belt has good reservoir property. The Lower Cretaceous Denglouku Formation mudstone covering the upper part of the central paleo-uplift belt is a regional caprock. The central paleo-uplift belt has developed three types of structural gas reservoirs: overlying type, bedrock weathering crust type and inner bedrock fracture type. The Zhaozhou uplift, Changde uplift and Wangjiatun uplift are three favorable exploration zones within the central paleo-uplift belt. © 2020, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：1163 / 1173
页数：10
相关论文
共 22 条
  • [1] JIAO Guihao, LUO Xia, YIN Changhai, Et al., Gas pooling conditions and exploration direction in deep Songliao Basin, Natural Gas Industry, 29, 9, pp. 28-31, (2009)
  • [2] REN Yanguang, ZHU Defeng, WAN Chuanbiao, Et al., Natural gas accumulation rule of Xujiaweizi depression in Songliao Basin and future exploration target, Petroleum Geology & Oilfield Development in Daqing, 23, 5, pp. 26-29, (2004)
  • [3] CAI Dongmei, SUN Lidong, QI Jingshun, Et al., Reservoir characteristics and evolution of volcanic rocks in Xujiaweizi fault depression, Acta Petrolei Sinica, 31, 3, pp. 400-407, (2010)
  • [4] FENG Zihui, YIN Changhai, QI Jingshun, Et al., Main factors controlling hydrocarbon accumulation in large volcanic gas fields: a case study of the Qingshen gas field in the Songliao Basin, Acta Petrologica Sinica, 26, 1, pp. 21-32, (2010)
  • [5] DU Jinhu, Analysis of natural gas accumulation conditions and exploration perspective in the central paleo-uplift belt (north), Songliao Basin, China Petroleum Exploration, 22, 5, pp. 1-14, (2017)
  • [6] LIU Yongjiang, ZHANG Xingzhou, JIN Wei, Et al., Late paleozoic tectonic evolution in Northeast China, Geology in China, 37, 4, pp. 943-951, (2010)
  • [7] CHEN Yi, KANG Zhihong, YANG Xiaofeng, Et al., Study on tectonic systems and sedimentary characteristics of Permo-Carboniferous in Songliao Basin and its periphery, Science Technology and Engineering, 15, 2, pp. 47-57, (2015)
  • [8] ZHANG Xiaodong, YU Jing, ZHANG Dazhi, Et al., Accumulating conditions and exploration prosopects for Shahezi-Formation tight sandstone gas in Xujiaweizi fault depression, Petroleum Geology and Oilfield Development in Daqing, 33, 5, pp. 86-91, (2014)
  • [9] CHI Yuanlin, YUN Jinbiao, MENG Qi'an, Et al., Mantle framework, basin forming dynamic and hydrocarbon migration and accumulation in the Songliao Basin, (2002)
  • [10] GAO Ruiqi, CAI Xiyuan, The Forming condition and distribution regularity of the oil & gas field in songliao Basin, pp. 12-46, (1997)
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