Analysis of the gas hydrate accumulation condition in Quemocuo area of Qiangtang Basin
ZHANG Shuai1, ZHU Youhai1, WANG Pingkang1, FU Xiugen2, WANG Dayong3, WU Xinhe1, PANG Shouji1, XIAO Rui1
1. Oil and Gas Survey, China Geological Survey, Beijing 100083, China; 2. Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China; 3. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
Abstract：Based on the survey results of QK-8 gas hydrate drilling test well and the clue of high hydrocarbon gas in Quemocuo area, the authors systematically analyzed the influence of permafrost thickness on natural gas hydrate accumulation, hydrocarbon source rocks characteristics, reservoir space, mitigation system and other geological factors, considering the geological factors affecting gas hydrate accumulation in permafrost regions. The potential of gas hydrate accumulation was also clarified. The results show that the thickness of permafrost is large (100 m). Hydrocarbon source rocks of Triassic have a overall performance of high abundance of organic matter, with kerogen type Ⅱ2 and higher maturity (Ro about 1.3%~1.5%). The reservoir space is mainly composed of cavity - fractured reservoirs, followed by fracture and pore types. It has an effective migration pathway and a good regional cap layer. At the same time, natural gas hydrate associated minerals such as calcite and pyrite were well developed in the multilayer sections. It is concluded that there is a certain potential for gas hydrate accumulation in Quemocuo area after comprehensive analysis, which is the main direction for the comprehensive energy resources investigation of the gas hydrate petroleum system.
张帅, 祝有海, 王平康, 付修根, 王大勇, 伍新和, 庞守吉, 肖睿. 羌塘盆地雀莫错地区天然气水合物成藏条件分析[J]. 中国地质调查, 2020, 7(4): 10-19.
ZHANG Shuai, ZHU Youhai, WANG Pingkang, FU Xiugen, WANG Dayong, WU Xinhe, PANG Shouji, XIAO Rui. Analysis of the gas hydrate accumulation condition in Quemocuo area of Qiangtang Basin. , 2020, 7(4): 10-19.
[1] Demirbas A.Methane hydrates as potential energy resource:Part 1—importance,resource and recovery facilities[J].Energ Convers Manage,2010,51(7):1547-1561. [2] Sloan E D.Clathrate Hydrates of Natural Gases[M].New York:Marcel Dekker,1998:1-730. [3] Makogon Y F,Holditch S A,Makogon T Y.Natural gas-hydrates—a potential energy source for the 21st Century[J].J Pet Sci Eng,2007,56(1/2/3):14-31. [4] 祝有海,张永勤,文怀军,等.青海祁连山冻土区发现天然气水合物[J].地质学报,2009,83(11):1762-1771. [5] Dickens G R.Hydrocarbon-driven warming[J].Nature,2004,429(6991):513-515. [6] Hester K C,Brewer P G.Clathrate hydrates in nature[J].Ann Rev Mar Sci,2009,1:303-327. [7] Makogon Y F,Trebin F A,Trofimuk A A.Finding of a pool of gas in the Hydrate State[J].Moscow,DAN SSSR,1971,196(1):197-206. [8] Collett T S,Bird K J,Magoon L B.Subsurface temperatures and geothermal gradients on the North Slope of Alaska[J].Cold Reg Sci Technol,1993,21(3):275-293. [9] Collett T S.Natural gas hydrates of the Prudhoe Bay and Kuparuk River Area,North Slope,Alaska[J].AAPG Bull,1993,77(5):793-812. [10] Koji Y,Scott D.Mallik hydrate research project progress[C].Fire in the Ice,2008:1-6. [11] 张洪涛,张海启,祝有海.中国天然气水合物调查研究现状及其进展[J].中国地质,2007,34(6):953-961. [12] 莫杰,王文海,彭娜娜,等.我国海洋地质调查研究新进展[J].中国地质调查,2017,4(4):1-8. [13] 杨胜雄,梁金强,刘昌岭,等.海域天然气水合物资源勘查工程进展[J].中国地质调查,2017,4(2):1-8. [14] Gong J L,Sun X M,Xu L,et al.Contribution of thermogenic organic matter to the formation of biogenic gas hydrate:Evidence from geochemical and microbial characteristics of hydrate-containing sediments in the Taixinan Basin,South China Sea[J].Mar Pet Geol,2017,80:432-449. [15] Lu Z Q,Zhu Y H,Liu H,et al.Gas source for gas hydrate and its significance in the Qilian Mountain permafrost,Qinghai[J].Mar Pet Geol,2013,43:341-348. [16] Wang P K,Huang X,Pang S J,et al.Geochemical dynamics of the gas hydrate system in the Qilian Mountain permafrost,Qinghai,Northwest China[J].Mar Pet Geol,2015,59:72-90. [17] 祝有海,赵省民,卢振权.中国冻土区天然气水合物的找矿选区及其资源潜力[J].天然气工业,2011,31(1):13-19. [18] 祝有海,张永勤,文怀军,等.祁连山冻土区天然气水合物及其基本特征[J].地球学报,2010,31(1):7-16. [19] 徐学祖,程国栋,俞祁浩.青藏高原多年冻土区天然气水合物的研究前景和建议[J].地球科学进展,1999,14(2):201-204. [20] 伊海生,时志强,刘文均,等.青藏高原多年冻土区天然气水合物形成潜力及远景[J].西藏地质,2002(1):45-52. [21] 陈多福,王茂春,夏斌.青藏高原冻土带天然气水合物的形成条件与分布预测[J].地球物理学报,2005,48(1):165-172. [22] 郭祖军,陈志勇,胡素云,等.天然气水合物分布及青藏高原有利勘探区[J].新疆石油地质,2012,33(3):266-271. [23] 吴青柏,蒋观利,蒲毅彬,等.青藏高原天然气水合物的形成与多年冻土的关系[J].地质通报,2006,25(1/2):29-33. [24] He J L,Wang J,Fu X G,et al.Assessing the conditions favorable for the occurrence of gas hydrate in the Tuonamu area Qiangtang basin,Qinghai-Tibetan,China[J].Energ Convers Manage,2012,53(1):11-18. [25] 王剑,丁俊,王成善,等.青藏高原油气资源战略选区调查与评价[M].北京:地质出版社,2009:1-22. [26] 王成善,伊海生,李勇,等.西藏羌塘盆地地质演化与油气远景评价[M].北京:地质出版社,2001:86-128. [27] 李才,翟庆国,董永胜,等.青藏高原龙木错—双湖板块缝合带与羌塘古特提斯洋演化记录[J].地质通报,2007,26(1):13-21. [28] 赵政璋,李永铁,叶和飞,等.青藏高原大地构造特征及盆地演化[M].北京:科学出版社,2001. [29] 赵政璋,李永铁,叶和飞,等.青藏高原羌塘盆地石油地质[M].北京:科学出版社,2001:1-367. [30] 青海省地质矿产局.青海省岩石地层[M].武汉:中国地质大学出版社,1997:273-287. [31] 西藏自治区地质矿产局.西藏自治区区域地质志[M].北京:地质出版社,1993:1-707. [32] 王平康,祝有海,卢振权,等.浅析祁连山冻土区天然气水合物成藏体系[C]//海峡两岸天然气水合物学术交流会论文集.青岛:中国地质学会,2010:52. [33] 张永勤,刘晖,王婷,等.祁连山冻土区天然气水合物成藏系统[C]//中国地质学会2013年学术年会论文集.昆明:中国地质学会,2013:459-461. [34] Wang P K,Zhu Y H,Lu Z Q,et al.Gas hydrate stability zone migration occurred in the Qilian mountain permafrost,Qinghai,Northwest China:evidences from pyrite morphology and pyrite sulfur isotope[J].Cold Reg Sci Technol,2014,98:8-17. [35] Collett T S,Johnson A H,Knapp C C,et al.Natural gas hydrates:a review[M]//Collett T S,Johnson A,Knapp C,et al.Natural Gas Hydrates-Energy Resource Potential and Associated Geologic Hazards.Tulsa,OK:AAPG Memoir,2009,89:153-162.
2020, Vol. 7 
