Progress of Carboniferous oil and gas survey in Qaidam Basin
LI Zongxing1,2, PENG Bo1,2, MA Yinsheng1,2, HU Junjie1,2, WEI Xiaojie1,2, MA Licheng1,2, FANG Xinxin1,2, YANG Yuanyuan1,2, LIU Kui3
1. Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081,China; 2. Key Laboratory of Shale Oil and Gas Geological Survey, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; 3. SinoProbe Center, Chinese Academy of Geological Sciences, Beijing 100037, China
Abstract：Carboniferous in Qaidam Basin is a new field for marine oil and gas exploration. Based on the investigation of Carboniferous oil and gas geological conditions, the resource potential is evaluated to provide a scientific basis for seeking oil and gas strategic succession areas. With Carboniferous system in Qaidam Basin as the main target, based on investigation and research, the first carbonaceous oil flow in Qaidam Basin was obtained, and the important discovery of oil and gas in Paleozoic marine strata in Qaidam Basin was obtained. Through comprehensive regional survey, balanced profile inversion, vitrinite reflectance and other comprehensive analyses, the authors assertained the main tectonic movement periods in Qaidam Basin. Through basin simulation techniques, reconstruction of the burial history of Carboniferous system, and analyses of oil and gas geochemical index of Carboniferous source rocks in Delingha depression of Qaidam Basin, the authors studied the evolution history of hydrocarbon generation from source rocks. The results show that Carboniferous source rocks in Delingha depression of Qaidam Basin are widely developed, with high abundance of organic matter and great burial depth without metamorphism, and these rocks are in mature-high maturity stage. The burial history of Carboniferous in Delingha depression is mainly characterized by rapid burial period, stable period and strong uplifting and erosion period. The history of subsidence and uplift-erosion has been different since Cenozoic. The thermal evolution history of Carboniferous source rocks is mainly charactered by “secondary hydrocarbon generation and late hydrocarbon generation”, which is mainly controlled by the tectonic movements in this area. The overall thermal evolution of Qaidam Basin is slowly decreasing, mainly controlled by the magmatic thermal events and tectonic activities in Qaidam Basin. The investigation results show that the new layer of Carboniferous has good oil and gas conditions and broad resource prospects, which is the successive layer for following exploration in Qaidam Basin.
李宗星, 彭博, 马寅生, 胡俊杰, 魏小洁, 马立成, 方欣欣, 杨元元, 刘奎. 柴达木盆地石炭系油气调查最新进展[J]. 中国地质调查, 2019, 6(4): 79-87.
LI Zongxing, PENG Bo, MA Yinsheng, HU Junjie, WEI Xiaojie, MA Licheng, FANG Xinxin, YANG Yuanyuan, LIU Kui. Progress of Carboniferous oil and gas survey in Qaidam Basin. , 2019, 6(4): 79-87.
[1] Jin Q,Zha M,Liu Z,et al.Geology and geochemistry of source rocks in the Qaidam Basin,NW China[J].J Petrol Geol,2002,25(2):219-238. [2] 高长海,查明.柴达木盆地北缘北西(西)向断裂及其油气地质意义[J].地球学报,2007,28(3):283-290. [3] 高斌斌,徐耀辉,李可文.柴达木盆地柴北缘侏罗系烃源岩特征分析[J].长江大学学报:自然科学版,2014,11(1):21-23. [4] 付锁堂. 柴达木盆地天然气勘探领域[J].中国石油勘探,2014,19(4):1-10. [5] 邵龙义,李猛,李永红,等.柴达木盆地北缘侏罗系页岩气地质特征及控制因素[J].地学前缘,2014,21(4):311-322. [6] 付锁堂,马达德,陈琰,等.柴达木盆地油气勘探新进展[J].石油学报,2016,37(增刊):1-10. [7] 李元奎,奎万仓,铁成文,等.柴达木盆地英东地区地质综合评价及勘探目标优选[J].地球学报,2012,33(1):57-64. [8] Fan Q S,Ma H Z,Lai Z P,et al.Origin and evolution of oilfield brines from Tertiary strata in western Qaidam Basin:Constraints from 87Sr/86Sr,δD,δ18O,δ34S and water chemistry[J].Chin J Geochem,2010,29(4):446-454. [9] Guo Z Q,Sun P,Li J,et al.Natural gas types,distribution controlling factors,and future exploration in the western Qaidam Ba-sin[J].Acta Geol Sin (Engl Ed),2014,88(4):1214-1226. [10] Mo X Y,Zhang M.Geochemical characteristics of aromatic hydrocarbons in saline lacustrine crude oils and their significance as exemplified by the south area of western Qaidam Basin[J].Chin J Geochem,2012,31(4):476-484. [11] 王万春,刘文汇,王国仓,等.沉积有机质微生物降解与生物气源岩识别——以柴达木盆地三湖坳陷第四系为例[J].石油学报,2016,37(3):318-327. [12] 沙威,翟志伟,杨红梅,等.柴东三湖地区天然气成因及成藏特征研究[J].天然气技术与经济,2016,10(3):21-23,62. [13] 田继先,曾旭,王文卓,等.柴达木盆地第四系疏松砂岩地层生物气含气检测方法探讨[J].石油物探,2016,55(3):408-413. [14] 张英,李剑,张奎,等.柴达木盆地三湖地区第四系生物气源岩中可溶有机质丰度及地质意义[J].地质学报,2007,81(12):1716-1722. [15] 管志强,夏斌,吕宝凤.柴达木盆地三湖地区生物气成藏基本要素及其配置性[J].天然气地球科学,2008,19(2):165-170. [16] 汤良杰,金之钧,张明利,等.柴达木盆地构造古地理分析[J].地学前缘,2000,7(4):421-429. [17] 牟泽辉. 青海柴达木板块石炭纪沉积特征与构造作用[J].西北地质,1989(2):8-13. [18] 杨超,陈清华,王冠民,等.柴达木地区晚古生代沉积构造演化[J].中国石油大学学报:自然科学版,2010,34(5):38-43,49. [19] 孙娇鹏,陈世悦,刘成林,等.柴达木盆地东北部晚古生代盆地构造环境:来自碎屑岩地球化学的证据[J].地学前缘,2016,23(5):45-55. [20] 代昆,刘成林,肖敦清,等.柴达木盆地欧龙布鲁克地区构造演化研究[J].地学前缘,2016,23(5):33-44. [21] 牛永斌,钟建华,段宏亮,等.柴达木盆地石炭系沉积相及其与烃源岩的关系[J].沉积学报,2010,28(1):140-149. [22] 杨平,胡勇.柴达木盆地石炭纪古生态与沉积环境[J].新疆石油地质,2006,27(3):280-284. [23] 马寅生,尹成明,刘成林,等.柴达木盆地石炭系油气资源调查评价进展[J].地球学报,2012,33(2):135-144. [24] 李守军,张洪.柴达木盆地石炭系地层特征与分布[J].地质科技情报,2000,19(1):1-4,10. [25] 王训练,高金汉,张海军,等.柴达木盆地北缘石炭系顶、底界线再认识[J].地学前缘,2002,9(3):65-72. [26] 万传治,乐幸福,陈迎宾.柴达木盆地东部地区石炭系分布规律与生烃潜力评价[J].天然气地球科学,2006,17(5):663-667. [27] 刘成林,马寅生,周刚,等.柴达木盆地石炭系生烃证据[J].石油学报,2012,33(6):925-931. [28] 邵文斌,彭立才,汪立群,等.柴达木盆地北缘井下石炭系烃源岩的发现及其地质意义[J].石油学报,2006,27(4):36-39. [29] 文志刚,王正允,何幼斌,等.柴达木盆地北缘上石炭统烃源岩评价[J].天然气地球科学,2004,15(2):125-127. [30] 杨元元,马寅生,刘成林,等.风化作用对烃源岩有机质丰度的影响:以柴北缘石灰沟克鲁克组为例[J].地学前缘,2016,23(5):113-118. [31] 陈世悦,刘金,马帅,等.柴北缘东段克鲁克组泥页岩储层特征[J].地学前缘,2016,23(5):56-65. [32] 彭博,刘成林,李宗星,等.柴达木盆地东部石炭系葡萄状灰岩缝洞的发现及成因分析[J].地学前缘,2016,23(5):66-74. [33] 邱楠生. 中国西部地区沉积盆地热演化和成烃史分析[J].石油勘探与开发,2002,29(1):6-8,23. [34] 林腊梅,金强.柴达木盆地北缘和西部主力烃源岩的生烃史[J].石油与天然气地质,2004,25(6):677-681. [35] 汤良杰,金之钧,庞雄奇.多期叠合盆地油气运聚模式[J].石油大学学报:自然科学版,2000,24(4):67-70. [36] 施俊,真允庆,吴金凤,等.柴达木盆地石炭纪油气资源的找藏前景[J].地质调查与研究,2008,31(1):43-51. [37] 李会军,鄢犀利,郭娟,等.柴达木盆地源自石炭系油气显示特征及其意义[J].断块油气田,2011,18(1):14-17. [38] 葛岩,刘成林,谢英刚,等.柴达木盆地石炭系油气勘探前景[J].油气地质与采收率,2014,21(2):57-61. [39] Gleadow A J W,Duddy I R,Lovering J F.Fission track analysis:A new tool for the evaluation of thermal histories and hydrocarbon potential[J].APEA J,1983,23:93-102. [40] 李宗星,邱楠生,马寅生,等.柴达木盆地东部古生代以来构造-热演化[J].地学前缘,2017,24(3):157-167.
2019, Vol. 6 
