Gas Chimney Effect and Formation of Quaternary Gas Pool in Sanhu Ar ea, Qaidam Basin

Abstract

Abstract: The high resolution seismic data show that gas chimneys exist around Quaternary gas reservoirs in Sanhu area of Qaidam basin.The Quaternary system is characterized by high geothermal gradient, with low scope of overpressure in its deep and shale caprock saturated with formation water of high salinity. The Gansenquan-Xiaochaidan basement faults affect the integrality of gas reservoir structures. These interacted factors result in the formation of gas chimney. The existence of gas chimney can explain the mixed source characters of Quaternary gas composition and ethane carbon isotope, thus resolving the contradictions between source rock hydrocarbongenerating potentials and gas reserves of each sequence. In conclusion, the gas chimney as a vertical path of natural gas migration plays an important role in Quaternary gas accumulation in this area.

Key words: Qaidam basin, gas chimney, overpressure, natural gas, hydrocarbon migration

CLC Number:

TE112.12

LIANG Quan-sheng, LIU Zhen, CHANG Mai, LI He-yong. Gas Chimney Effect and Formation of Quaternary Gas Pool in Sanhu Ar ea, Qaidam Basin[J]. Xinjiang Petroleum Geology, 2006, 27(2): 156-159.

[1]	LIAO Li, OU Baoming, CHEN Jun, WU Cheng, JIANG Qi, NI Yong, ZHAO Yu. Plugging Mechanism and Plugging Removal Technology for Unconsolidated Sandstone Gas Reservoirs in Sebei Gas Field [J]. Xinjiang Petroleum Geology, 2023, 44(1): 100-104.
[2]	CHAI Xiaoying, WANG Yan, LIU Junfeng, CHEN Fenjun, YANG Huijie, TAN Zhiwei. Water-Gas Ratio and Early Warning of Water Invasion in Unconsolidated Sandstone Gas Reservoirs in Sebei Gas Field，Qaidam Basin [J]. Xinjiang Petroleum Geology, 2023, 44(1): 51-57.
[3]	BAI Zhenqiang, WANG Qinghua, SONG Wenbo. Lower Limits of Pore Throat Producing in Natural Gas Drive Reservoirs Based on Nuclear Magnetic Resonance [J]. Xinjiang Petroleum Geology, 2023, 44(1): 58-63.
[4]	TANG Yong, LEI Dewen, CAO Jian, LIU Yin, HUANG Liliang, LI Hui. Total Petroleum System and Inner-Source Natural Gas Exploration in Permian Strata of Junggar Basin [J]. Xinjiang Petroleum Geology, 2022, 43(6): 654-662.
[5]	GONG Deyu, LIU Hailei, YANG Haibo, LI Zonghao, WANG Ruiju, WU Weian. Gas Generation Potential of Fengcheng Formation Source Rocks and Exploration Fields in Junggar Basin [J]. Xinjiang Petroleum Geology, 2022, 43(6): 674-683.
[6]	CHEN Shijie, SUN Lei, PAN Yi, WANG Yajuan, LIN Youjian, CHEN Fenjun. Experimental Evaluation on Microsphere-Natural Gas Flooding in Buried-Hill Reservoirs [J]. Xinjiang Petroleum Geology, 2022, 43(4): 468-473.
[7]	ZHOU Liming, HAN Zheng, ZHANG Daoyong, REN Jihong, FENG Zhigang, ZHANG Chenshuo. Characteristics of Incremental Proven Oil and Natural Gas Geological Reserves in China [J]. Xinjiang Petroleum Geology, 2022, 43(1): 115-121.
[8]	LU Xuesong, ZHANG Fengqi, ZHAO Mengjun, ZHUO Qingong, GUI Lili, YU Zhichao, LIU Qiang. Genesis of Overpressure and Sealing Ability of Caprocks in Well Gaotan 1 in the Southern Margin of Junggar Basin [J]. Xinjiang Petroleum Geology, 2021, 42(6): 666-675.
[9]	WEI Xuebin, SHA Wei, SHEN Xiaoshuang, SI Dan, ZHANG Guoqing, REN Shixia, YANG Mei. Petroleum Exploration History and Enlightenment in Qaidam Basin [J]. Xinjiang Petroleum Geology, 2021, 42(3): 302-311.
[10]	SUN Xiujian, MA Feng, BAI Yadong, WANG Bo, GUAN Bin, LUO Na, WEI Shunke. Differentiated Hydrocarbon Enrichment Factors of Bedrock Gas Reservoir in Piedmont Belt of Altun Mountain, Qaidam Basin [J]. Xinjiang Petroleum Geology, 2020, 41(4): 394-401.
[11]	DU Xiaodong, PENG Guangrong, WU Jing, ZHANG Zhiwei, XU Xinming, ZHU Dingwei. Faults and Its Impacts on Petroleum Accumulation in Eastern Yangjiang Sag, Pearl River Mouth Basin [J]. Xinjiang Petroleum Geology, 2020, 41(4): 414-421.
[12]	WANG Dongming. Development of Ultra-Low Permeability and Strong Water Sensitivity Reservoirs in Deep Strata of Shuang229-Wa111 Blocks [J]. Xinjiang Petroleum Geology, 2020, 41(4): 464-470.
[13]	MA Wanyun, Dilidaer ROUZI, LI Ji, LIAO Jiande, WANG Haijing, HE Dan. Hydrocarbon Generation of Jurassic Source Rocks in the Southern Margin of Junggar Basin [J]. Xinjiang Petroleum Geology, 2020, 41(1): 31-37.
[14]	TIAN Mingzhi, LIU Zhanguo, SONG Guangyong, LI Chang, TIAN Han, LI Yafeng, XIA Xiaomin. Identification and Prediction of Effective Source Rocks for Tight Oil in Zhahaquan Area, Qaidam Basin [J]. Xinjiang Petroleum Geology, 2019, 40(zk(English) ): 536-542.
[15]	ZHANG Daowei1, MA Dade1, CHEN Yan1, WU Kunyu1, CAI Zhihong1, ZHAO Jian1, WANG Jiangong2. Research Progress on Oil and Gas Geology and Exploration Practice in Qaidam Basin [J]. , 2019, 40(5): 1-1.

Gas Chimney Effect and Formation of Quaternary Gas Pool in Sanhu Ar ea, Qaidam Basin

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments