Re-evaluation of hydrocarbon generation potential of the Upper Paleozoic coal-measure source rocks in the Hangjinqi area of Ordos Basin
-
摘要: 鄂尔多斯盆地北缘杭锦旗地区上古生界是中国石化华北油气分公司天然气的重要增储上产领域。及时开展该地区上古生界煤系烃源岩的生烃潜力再评价研究，有利于为下步勘探部署提供参考。综合利用有机地球化学、有机岩石学等技术手段，结合地层孔隙热压生排烃物理模拟、TSM盆地资源评价数值模拟等新方法和勘探新资料，系统分析、对比研究区上古生界烃源岩的沉积环境、品质特征和展布特征，进而深入开展生烃潜力的再评价。杭锦旗断裂带以南地区上古生界烃源岩具有"品质好、演化程度高、厚度大"的总体特征，而断裂带以北地区则相反。基于物理模拟和数值模拟结果计算，杭锦旗地区上古生界煤系烃源岩的总生气量为15.922×1012 m3，断裂带以北地区生气强度一般小于10×108 m3/km2，而断裂以南地区生气强度主要分布于（15~35）×108 m3/km2，具备形成大中型气田的物质基础。Abstract: The Upper Paleozoic strata in the Hangjinqi area of the Ordos Basin are an important field to increase reserves and productions for the North China Oil and Gas Branch, SINOPEC. It is necessary to conduct a re-evaluation of hydrocarbon generation potential for the Upper Paleozoic coal-measure source rocks in time, which is favorable to provide theoretical support for further exploration and deployment. The organic geochemical and organic petrological approaches were carried out in this study and integrated with the physical simulation of hydrocarbon generation and expulsion from formation pore by thermal compression, numerical simulation of TSM basin resource evaluation and new exploration data, in order to systematically analyze and compare the sedimentary environment, quality and distribution of the Upper Paleozoic source rocks, and further to conduct the re-evaluation of hydrocarbon potential. The results indicated that the Upper Paleozoic source rocks of the south of the fault belts in the Hangjinqi area appeared to have characteristics of good quality, high evolution degree, and a great thickness, whereas those in the north part of the fault belts displayed the negative characteristics. As indicated by the physical and numerical simulation results, the Upper Paleozoic coal-measure source rocks in the Hangjinqi area displayed a total gas generation amount of 15.922×1012 m3. The gas generation intensity to the north of the fault belts was less than 1×109 m3/km2, whereas that to the south ranged (1.5-3.5)×109 m3/km2, which has provided a material basis for the generation of large and medium gas fields.
-
图 1 鄂尔多斯盆地杭锦旗地区构造区带及岩心采样井位分布
Figure 1. Distribution of tectonic zones and wells for core sampling in Hangjinqi area, Ordos Basin
图 2 鄂尔多斯盆地杭锦旗地区J7井上古生界太原组、山西组相关微量元素及其比值
Figure 2. Contents and ratios of trace elements in source rocks from Upper Paleozoic Taiyuan and Shanxi formations in well J7, Hangjinqi area, Ordos Basin
图 3 鄂尔多斯盆地杭锦旗地区上古生界太原组、山西组暗色泥岩(a)、煤(b)有机质丰度分布
评价标准据参考文献[13]。
Figure 3. Distribution of organic matter abundance for dark mudstones (a) and coals (b) in Upper Paleozoic Taiyuan and Shanxi formations, Hangjinqi area, Ordos Basin
图 4 鄂尔多斯盆地杭锦旗地区上古生界太原组、山西组烃源岩干酪根碳同位素值分布
Figure 4. Distribution of carbon isotopic values of kerogen in source rocks from Upper Paleozoic Taiyuan and Shanxi formations, Hangjinqi area, Ordos Basin
图 5 鄂尔多斯盆地杭锦旗地区上古生界烃源岩Ro等值线
Figure 5. Ro contours of Upper Paleozoic source rocks in Hangjinqi area, Ordos Basin
图 6 鄂尔多斯盆地杭锦旗地区上古生界太原组、山西组煤层南北向连井剖面
剖面位置见图 1。
Figure 6. SN-trending well-connecting profiles of coal seams in Upper Paleozoic Taiyuan and Shanxi formations, Hangjinqi area, Ordos Basin
图 7 鄂尔多斯盆地杭锦旗地区上古生界暗色泥岩、煤层厚度等值线
Figure 7. Thickness contours of Upper Paleozoic dark mudstones and coal rocks in Hangjinqi area, Ordos Basin
-
[1] 何发岐, 王付斌, 张威, 等. 鄂尔多斯盆地北缘勘探思路转变与天然气领域重大突破[J]. 中国石油勘探, 2020, 25(6): 39-49. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY202006004.htmHE Faqi, WANG Fubin, ZHANG Wei, et al. Transformation of exploration ideas and major breakthrough in natural gas discovery in the northern margin of the Ordos Basin[J]. China Petroleum Exploration, 2020, 25(6): 39-49. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY202006004.htm [2] 李良, 袁志祥, 惠宽洋, 等. 鄂尔多斯盆地北部上古生界天然气聚集规律[J]. 石油与天然气地质, 2000, 21(3): 268-271. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT200003017.htmLI Liang, YUAN Zhixiang, HUI Kuanyang, et al. Accumulation regularity of Upper Paleozoic gas in north Ordos Basin[J]. Oil & Gas Geology, 2000, 21(3): 268-271. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT200003017.htm [3] 徐波, 聂海宽, 王敏, 等. 鄂尔多斯盆地杭锦旗探区烃源岩生烃能力[J]. 油气地质与采收率, 2009, 16(4): 38-40. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS200904014.htmXU Bo, NIE Haikuan, WANG Min, et al. A study of hydrocarbon-generating potential of Hangjinqi prospect area in Ordos Basin[J]. Petroleum Geology and Recovery Efficiency, 2009, 16(4): 38-40. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS200904014.htm [4] 薛会, 张金川, 徐波, 等. 鄂尔多斯北部杭锦旗探区上古生界烃源岩评价[J]. 成都理工大学学报(自然科学版), 2010, 37(1): 21-28. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201001004.htmXUE Hui, ZHANG Jinchuan, XU Bo, et al. Evaluation of Upper Paleozoic source rocks of the Hangjinqi block in the northern Ordos Basin, China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2010, 37(1): 21-28. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201001004.htm [5] 纪文明, 李潍莲, 刘震, 等. 鄂尔多斯盆地北部杭锦旗地区上古生界气源岩分析[J]. 天然气地球科学, 2013, 24(5): 905-914. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201305005.htmJI Wenming, LI Weilian, LIU Zhen, et al. Research on the Upper Paleozoic gas source of the Hangjinqi block in the northern Ordos Basin[J]. Natural Gas Geoscience, 2013, 24(5): 905-914. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201305005.htm [6] 赵桂萍. 鄂尔多斯盆地杭锦旗地区上古生界烃源岩热演化特征模拟研究[J]. 石油实验地质, 2016, 38(5): 641-646. doi: 10.11781/sysydz201605641ZHAO Guiping. Thermal evolution modeling of Neopaleozoic source rocks in Hangjinqi region, Ordos Basin[J]. Petroleum Geology & Experiment, 2016, 38(5): 641-646. doi: 10.11781/sysydz201605641 [7] 邱隆伟, 穆相骥, 李浩, 等. 鄂尔多斯盆地杭锦旗地区二叠系下石盒子组岩屑发育特征及其对储层物性的影响[J]. 石油与天然气地质, 2019, 40(1): 24-33. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201901004.htmQIU Longwei, MU Xiangji, LI Hao, et al. Characteristics of detritus development in the Permian Lower Shihezi Formation in Hangjinqi area and its influence on reservoir physical properties[J]. Oil & Gas Geology, 2019, 40(1): 24-33. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201901004.htm [8] 齐荣. 鄂尔多斯盆地杭锦旗东部断裂特征及对天然气成藏的影响[J]. 特种油气藏, 2019, 26(4): 58-63. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ201904010.htmQI Rong. Fault Characterization and its influences on gas accumulation in the eastern Haggin Banner of Ordos Basin[J]. Special Oil & Gas Reservoirs, 2019, 26(4): 58-63. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ201904010.htm [9] 戴金星, 秦胜飞, 胡国艺, 等. 新中国天然气勘探开发70年来的重大进展[J]. 石油勘探与开发, 2019, 46(6): 1037-1046. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201906004.htmDAI Jinxing, QIN Shengfei, HU Guoyi, et al. Major progress in the natural gas exploration and development in the past seven decades in China[J]. Petroleum Exploration and Development, 2019, 46(6): 1037-1046. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201906004.htm [10] 易非凡, 田景春, 张翔, 等. 杭锦旗地区山西组沉积相及其演化特征[J]. 断块油气田, 2019, 26(4): 439-443. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201904008.htmYI Feifan, TIAN Jingchun, ZHANG Xiang, et al. Sedimentary facies and its evolution characteristics of Shanxi Formation in Hangjinqi area[J]. Fault-Block Oil and Gas Field, 2019, 26(4): 439-443. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201904008.htm [11] HATCH J R, LEVENTHAL J S. Relationship between inferred redox potential of the depositional environment and geochemistry of the Upper Pennsylvanian (Missourian) stark shale member of the Dennis limestone, Wabaunsee County, Kansas, U.S.A. [J]. Chemical Geology, 1992, 99(1/3): 65-82. [12] 王彤, 朱筱敏, 董艳蕾, 等. 基于微量元素分析的古沉积背景重建: 以准噶尔盆地西北缘古近系安集海河组为例[J]. 地质学报, 2020, 94(12): 3830-3851. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE202012021.htmWANG Tong, ZHU Xiaomin, DONG Yanlei, et al. Trace elements as paleo sedimentary environment indicators: a case study of the Paleogene Anjihaihe Formation in the northwestern Junggar Basin[J]. Acta Geologica Sinica, 2020, 94(12): 3830-3851. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE202012021.htm [13] PETERS K E. Guidelines for evaluating petroleum source rock using programmed pyrolysis[J]. AAPG Bulletin, 1986, 70(3): 318-329. [14] 徐旭辉, 申宝剑, 李志明, 等. 页岩气实验地质评价技术研究现状及展望[J]. 油气藏评价与开发, 2020, 10(1): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202001002.htmXU Xuhui, SHEN Baojian, LI Zhiming, et al. Status and prospect of experimental technologies of geological evaluation for shale gas[J]. Reservoir Evaluation and Development, 2020, 10(1): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202001002.htm [15] 陈建平, 梁狄刚, 张水昌, 等. 中国古生界海相烃源岩生烃潜力评价标准与方法[J]. 地质学报, 2012, 86(7): 1132-1142. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201207009.htmCHEN Jianping, LIANG Digang, ZHANG Shuichang, et al. Evaluation criterion and methods of the hydrocarbon generation potential for China's Paleozoic marine source rocks[J]. Acta Geologica Sinica, 2012, 86(7): 1132-1142. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201207009.htm [16] 秦建中. 中国烃源岩[M]. 北京: 科学出版社, 2005.QIN Jianzhong. Source rocks of China[M]. Beijing: Science Press, 2005. [17] TISSOT B, DURAND B, ESPITALIE J, et al. Influence of nature and diagenesis of organic matter in formation of petroleum[J]. AAPG Bulletin, 1974, 58(3): 499-506. [18] 熊德明, 马万云, 张明峰, 等. 干酪根类型及生烃潜力确定新方法[J]. 天然气地球科学, 2014, 25(6): 898-905. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201406013.htmXIONG Deming, MA Wanyun, ZHANG Mingfeng, et al. New method for the determination of kerogen type and the hydrocarbon potential[J]. Natural Gas Geoscience, 2014, 25(6): 898-905. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201406013.htm [19] 秦建中, 申宝剑, 陶国亮, 等. 优质烃源岩成烃生物与生烃能力动态评价[J]. 石油实验地质, 2014, 36(4): 465-472. doi: 10.11781/sysydz201404465QIN Jianzhong, SHEN Baojian, TAO Guoliang, et al. Hydrocarbon-forming organisms and dynamic evaluation of hydrocarbon generation capacity in excellent source rocks[J]. Petroleum Geology & Experiment, 2014, 36(4): 465-472. doi: 10.11781/sysydz201404465 [20] 倪春华, 周小进, 王果寿, 等. 鄂尔多斯盆地南部平凉组烃源岩特征及其成烃演化分析[J]. 石油实验地质, 2010, 32(6): 572-577. doi: 10.11781/sysydz201006572NI Chunhua, ZHOU Xiaojin, WANG Guoshou, et al. Characteristics and hydrocarbon generation evolution of Pingliang Formation source rocks, southern Ordos Basin[J]. Petroleum Geology & Experiment, 2010, 32(6): 572-577. doi: 10.11781/sysydz201006572 [21] 刘学珍, 杨迎春, 周翔. 鄂尔多斯盆地代家坪地区延长组原油成因及成藏期次[J]. 新疆石油地质, 2019, 40(4): 414-421. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD201904004.htmLIU Xuezhen, YANG Yingchun, ZHOU Xiang. Genesis and accumulation periods of oil in Yanchang Formation of Daijiaping area, Ordos Basin[J]. Xinjiang Petroleum Geology, 2019, 40(4): 414-421. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD201904004.htm [22] 武英利, 朱建辉, 倪春华, 等. 松辽盆地南部中小断陷白垩系烃源岩成熟度综合评价: 以彰武、昌图断陷为例[J]. 石油实验地质, 2020, 42(2): 289-295. doi: 10.11781/sysydz202002289WU Yingli, ZHU Jianhui, NI Chunhua, et al. Comprehensive evaluation of Cretaceous source rock maturity in medium and small fault depressions in southern Songliao Basin: a case study of Zhangwu and Changtu fault depressions[J]. Petroleum Geology & Experiment, 2020, 42(2): 289-295. doi: 10.11781/sysydz202002289 [23] 郑伦举, 秦建中, 何生, 等. 地层孔隙热压生排烃模拟实验初步研究[J]. 石油实验地质, 2009, 31(3): 296-302. doi: 10.11781/sysydz200903296ZHENG Lunju, QIN Jianzhong, HE Sheng, et al. Preliminary study of formation porosity thermocompression simulation experi-mentof hydrocarbon generation and expulsion[J]. Petroleum Geology & Experiment, 2009, 31(3): 296-302. doi: 10.11781/sysydz200903296 [24] 郑伦举, 马中良, 王强, 等. 烃源岩有限空间热解生油气潜力定量评价研究[J]. 石油实验地质, 2011, 33(5): 452-459. doi: 10.11781/sysydz201105452ZHENG Lunju, MA Zhongliang, WANG Qiang, et al. Quantitative evaluation of hydrocarbon yielding potential of source rock: application of pyrolysis in finite space[J]. Petroleum Geology & Experiment, 2011, 33(5): 452-459. doi: 10.11781/sysydz201105452 [25] 巢前, 蔡进功, 周祺盛, 等. 东营凹陷沙河街组Es3/Es4烃源岩热解特征及生烃差异研究[J]. 高校地质学报, 2017, 23(4): 688-696. https://www.cnki.com.cn/Article/CJFDTOTAL-GXDX201704013.htmCHAO Qian, CAI Jingong, ZHOU Qisheng, et al. Characteristics of rock-eval pyrolysis and hydrocarbon generation for source rocks of Eocene Shahejie Third and Fourth Members, Dongying Depression[J]. Geological Journal of China Universities, 2017, 23(4): 688-696. https://www.cnki.com.cn/Article/CJFDTOTAL-GXDX201704013.htm [26] 杨恒, 龚文平, 郑伦举. 煤系烃源岩油气生成、排出与滞留特征[J]. 石油实验地质, 2021, 43(3): 498-506. doi: 10.11781/sysydz202103498YANG Heng, GONG Wenping, ZHENG Lunju. Characteristics of oil and gas generation, expelling and retention of coaly source rock[J]. Petroleum Geology & Experiment, 2021, 43(3): 498-506. doi: 10.11781/sysydz202103498 [27] 徐陈杰, 叶加仁, 刘金水, 等. 东海西湖凹陷平湖组Ⅲ型干酪根暗色泥岩生排烃模拟[J]. 石油与天然气地质, 2020, 41(2): 359-366. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202002013.htmXU Chenjie, YE Jiaren, LIU Jinshui, et al. Simulation of hydrocarbon generation and expulsion for the dark mudstone with type-Ⅲ kerogen in the Pinghu Formation of Xihu Sag in East China Sea Shelf Basin[J]. Oil & Gas Geology, 2020, 41(2): 359-366. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202002013.htm [28] 杨风丽, 周晓峰, 胡虞杨, 等. 新元古代扬子克拉通TSM盆地原型分析[J]. 石油实验地质, 2020, 42(5): 742-755. doi: 10.11781/sysydz202005742YANG Fengli, ZHOU Xiaofeng, HU Yuyang, et al. TSM prototype basins on the Neoproterozoic Yangtze Craton[J]. Petroleum Geology & Experiment, 2020, 42(5): 742-755. doi: 10.11781/sysydz202005742 [29] 戴金星, 邹才能, 陶士振, 等. 中国大气田形成条件和主控因素[J]. 天然气地球科学, 2007, 18(4): 473-484. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX200704001.htmDAI Jinxing, ZOU Caineng, TAO Shizhen, et al. Formation conditions and main controlling factors of large gas fields in China[J]. Natural Gas Geoscience, 2007, 18(4): 473-484. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX200704001.htm [30] 倪春华, 刘光祥, 朱建辉, 等. 鄂尔多斯盆地杭锦旗地区上古生界天然气成因及来源[J]. 石油实验地质, 2018, 40(2): 193-199. doi: 10.11781/sysydz201802193NI Chunhua, LIU Guangxiang, ZHU Jianhui, et al. Origin and source of natural gas in the Upper Paleozoic in Hangjinqi area, Ordos Basin[J]. Petroleum Geology & Experiment, 2018, 40(2): 193-199. doi: 10.11781/sysydz201802193 -
下载:
图(8)
计量
- 文章访问数: 702
- HTML全文浏览量: 190
- PDF下载量: 93
- 被引次数: 0
苏公网安备32021102000780号