库车坳陷北部迪北段致密油气来源与勘探方向

doi:10.3969/j.issn.1672-7703.2019.04.009

中国石油勘探 ›› 2019, Vol. 24 ›› Issue (4): 485-497.DOI: 10.3969/j.issn.1672-7703.2019.04.009

库车坳陷北部迪北段致密油气来源与勘探方向

李谨^1,2 ,王超^3,4 ,李剑^1,2 ,马卫^1,2 ,张海祖⁵ ,卢玉红⁵ ,李德江^1,2 , 刘满仓^1,2

1 中国石油勘探开发研究院；2 中国石油天然气集团有限公司天然气成藏与开发重点实验室；3 广东石油化工学院；4 广东省非常规能源工程技术研究中心；5 中国石油塔里木油田公司

出版日期:2019-07-15 发布日期:2019-07-15
通讯作者: 王超（1986-），男，黑龙江依安人，博士，2017 年毕业于东北石油大学，讲师，从事油气成藏与保存条件研究工作。地址：广东省茂名市官渡二路139 号广东石油化工学院，邮政编码：525000，E-mail: 13704897168@163.com
作者简介:李谨（1982-），男，湖北襄阳人，硕士，2007 年毕业于长江大学，高级工程师，主要从事油气地球化学研究工作。地址：河北省廊坊市广阳区万庄石油分院，邮政编码：102249。E-mail: lijin69@petrochina.com.cn
基金资助:
国家科技重大专项“大型气田成藏机制、富集规律与勘探新领域”（2016ZX05007-003）；国家自然科学基金“断层岩古泥质含量恢复及古侧向封闭能力定量评价”（41802138）；中国科学院战略性先导科技专项（A类）“智能导钻技术装备体系与相关理论研究”项目“典型深层气藏成藏主控因素与勘探新领域”（XDA14010403）；广东石油化工学院科研启动基金“油气成藏期断层侧向运聚油气有利部位定量评价”（2018rc04）。

Source and exploration direction of tight oil and gas in the Dibei section of northern Kuqa depression

Li Jin^1,2,Wang Chao^3,4,Li Jian^1,2,Ma Wei^1,2, Zhang Haizu⁵, Lu Yuhong⁵, Li Dejiang^1,2,Liu Mancang^1,2

1 PetroChina Research Institute of Petroleum Exploration & Development; 2 CNPC Key Laboratory for Hydrocarbon Accumulation and Development of Natural Gas; 3 Guangdong University of Petrochemical Technology; 4 Guangdong Unconventional Energy Engineering and Technology Research Center; 5 PetroChina Tarim Oilfield Company

Online:2019-07-15 Published:2019-07-15
Supported by:

摘要/Abstract

摘要： 致密油气为库车坳陷北部构造带迪北段重要勘探领域，但整体勘探程度较低。为了研究迪北段致密油气来源，落实勘探潜力，在不同层系烃源岩地球化学特征分析基础上，通过油气源对比指出下侏罗统阿合组致密储层内油气均以上三叠统烃源岩贡献为主。利用阿合组烃类流体包裹体均一温度测试结果和单井热史、埋藏史的分析，确定阿合组油气具有3 期充注特征；结合迪北段油气成藏过程动态演化分析，认为迪北段油气具有早油晚气的特点，进而建立早期和晚期油气成藏模式，明确烃源岩有效排气强度和致密储层裂缝发育程度共同控制致密气藏的分布，并预测阿合组致密气藏勘探有利区位于迪北边缘。

关键词: 库车坳陷, 油气源对比, 成藏期次, 成藏模式, 有利勘探区

Abstract: Tight oil and gas is an important exploration field in the Dibei section of the structural belt of northern Kuqa depression, but the overall exploration degree is low. In order to investigate the source of tight oil and gas in the Dibei section and ascertain its exploration potential, oil/gas-source correction was carried out after geochemical characteristics of hydrocarbon source rocks in different series of strata were analyzed. It is shown that the oil and gas in the tight reservoirs of Ahe Formation of Lower Jurassic is mainly contributed by the Triassic source rocks. Then, based on the test results of homogeneous temperature of hydrocarbon fluid inclusion in the Ahe Formation and the analysis results of single well thermal history and burial history, it is determined that there are hydrocarbon charging characteristics of three periods in the Ahe Formation. Combined with the dynamic evolution analysis on the hydrocarbon accumulation process in the Dibei section, it is shown that the hydrocarbon in the Dibei section has the characteristics of early oil and late gas. Finally, the early and late hydrocarbon accumulation models were established. It is ascertained that the distribution of tight gas reservoirs is under the joint control of the effective expulsion intensity of source rocks and the fracture development degree of tight reservoirs. What’s more, it is predicted that the favorable exploration area of tight gas reservoirs in Ahe Formation is located along the northern margin of Dibei.

中图分类号:

李谨, 王超, 李剑, 马卫, 张海祖, 卢玉红, 李德江, 刘满仓. 库车坳陷北部迪北段致密油气来源与勘探方向[J]. 中国石油勘探, 2019, 24(4): 485-497.

Li Jin, Wang Chao, Li Jian, Ma Wei, Zhang Haizu, Lu Yuhong, Li Dejiang, Liu Mancang. Source and exploration direction of tight oil and gas in the Dibei section of northern Kuqa depression[J]. China Petroleum Exploration, 2019, 24(4): 485-497.

参考文献

[1] 康玉柱. 中国非常规油气勘探重大进展和资源潜力[J]. 石油科技论坛,2018,37(4):1-7. Kang Yuzhu. Significant exploration progress and resource potential of unconventional oil and gas in China[J]. Oil Forum, 2018,37(4):1-7.
[2] 王珂，张荣虎，方晓刚，王俊鹏，张同辉. 超深层裂缝—孔隙型致密砂岩储层特征与属性建模——以库车坳陷克深8 气藏为例[J]. 中国石油勘探，2018,23(6):87-96. Wang Ke, Zhang Ronghu, Fang Xiaogang, Wang Junpeng, Zhang Tonghui. Characteristics and property modeling of ultra-deep fractured-porous tight sandstone reservoir: a case study on the Keshen 8 gas reservoir in Kuqa depression[J]. China Petroleum Exploration, 2018,23(6):87-96.
[3] 张杨，杨向同，滕起，徐永辉，薛艳鹏，徐国伟，等. 塔里木油田超深高温高压致密气藏地质工程一体化提产实践与认识[J]. 中国石油勘探，2018,23(2):43-50. Zhang Yang, Yang Xiangtong, Teng Qi, Xu Yonghui,Xue Yanpeng, Xu Guowei, et al . Practice and cognition of geology-engineering integration for the production increasing of HTHP ultra-deep tight gas reservoir in Tarim oilfield[J]. China Petroleum Exploration, 2018,23(2):43-50.
[4] 张新顺，马锋，王红军，王克铭，李文浩，秦雁群. 北美典型致密油区可采资源富集规律[J]. 中国石油勘探，2018,23(4):58-66. Zhang Xinshun, Ma Feng, Wang Hongjun, Wang Keming, Li Wenhao, Qin Yanqun. Accumulation laws of recoverable resources in typical tight oil zones in North America[J]. China Petroleum Exploration, 2018,23(4):58-66.
[5] 王凤娇，刘义坤，于苏浩. 苏里格气田东区致密砂岩储层特征[J]. 油气地质与采收率，2017,24(6):43-47. Wang Fengjiao, Liu Yikun, Yu Suhao. Reservoir characteristics of tight sandstone in the eastern Sulige gas field[J]. Petroleum Geology and Recovery Efficiency，2017,24(6):43-47.
[6] 朱柳，李俊武，徐垚，魏毅，魏永辉. 柴西南地区下干柴沟组碳酸盐岩致密油储层特征[J]. 特种油气藏，2018,25(1):58-63. Zhu Liu, Li Junwu, Xu Yao, Wei Yi, Wei Yonghui. Carbonated tight oil reservoir characterization of the Lower Ganchaigou Formation in the southwestern Qaidam Basin[J]. Special Oil & Gas Reservoirs, 2018,25(1):58-63.
[7] 刘涛，石善志，郑子君，纪拥军，王磊. 地质工程一体化在玛湖凹陷致密砂砾岩水平井开发中的实践[J]. 中国石油勘探，2018,23(2): 90-103. Liu Tao, Shi Shanzhi, Zheng Zijun, Ji Yongjun, Wang Lei. Application of geology-engineering integration for developing tight oil in glutenite reservoir by horizontal wells in Mahu sag[J]. China Petroleum Exploration, 2018,23(2):90-103.
[8] 孙金山，刘国宏，孙明安，王朝霞. 库车坳陷侏罗系煤系烃源岩评价 [J]. 西南石油学院学报，2003,25(6):1-4. Sun Jinshan, Liu Guohong, Sun Ming’an, Wang Zhaoxia. Evaluation of Jurassic coal measures source rocks in Kuqa depression[J]. Journal of Southwest Petroleum Institute, 2003, 25(6):1-4.
[9] 卢玉红，钱玲，鲁雪松，余和中，张科，赵青. 迪北地区致密气藏地质条件及资源潜力[J]. 大庆石油地质与开发，2015,34(4):8-14. Lu Yuhong, Qian Ling, Lu Xuesong, Yu Hezhong, Zhang Ke, Zhao Qing. Geological conditions and resource potential of the tight gas reservoirs in Dibei area[J]. Petroleum Geology & Oilfield Development in Daqing, 2015,34(4):8-14.
[10] 陈建平, 赵长毅, 何忠华. 煤系有机质生烃潜力评价标准探讨[J]. 石油勘探与开发，1997,24(1):1-5,91. Chen Jianping, Zhao Changyi, He Zhonghua. Criteria for evaluating the hydrocarbon generating potential of organic matter in coal measures[J]. Petroleum Exploration and Development, 1997,24(1):1-5,91.
[11] 王飞宇，杜治利，李谦，张水昌，陈建平，肖中尧，等. 塔里木盆地库车坳陷中生界油源岩有机成熟度和生烃历史[J]. 地球化学， 2005,34(2):136-146. Wang Feiyu, Du Zhili, Li Qian, Zhang Shuichang, Chen Jianping, Xiao Zhongyao, et al . Organic maturity and hydrocarbon generation history of the Mesozoic oil source rocks in the Kuqa depression, Tarim Basin[J]. Geochemistry, 2005, 34(2):136-146.
[12] 傅家谟，盛国英，许家友，贾蓉芬，范善发，彭平安，等. 应用生物标志化合物参数判识古沉积环境[J]. 地球化学，1991,3(1):1-12. Fu Jiamo, Sheng Guoying, Xu Jiayou, Jia Rongfen, Fan Shanfa, Peng Ping’an, et al . Identification of paleos e d i m e n t a r y e n v i r o n m e n t u s i n g b i o m a r k e r c o m p o u n d parameters[J]. Geochemistry, 1991,3(1):1-12.
[13] Shen Ping, Xu Yongchang. Isotope composition of gas hydrocarbon characteristics and identification of coal-associated gas[J]. Science China (B) , 1987,17(6):647-656.
[14] 戴金星. 各类烷烃气的鉴别[J]. 中国科学B 辑：化学，1992,22(2): 185-193. Dai Jinxing. Identification and distinction of various alkane gases[J]. Science in China Series B: Chemistry, 1992,22(2): 185-193.
[15] 戴金星. 天然气碳氢同位素特征和各类天然气鉴别[J]. 天然气地球科学，1993,4(2/3):1-40. Dai Jinxing. Carbon and hydrogen isotope characteristics of natural gas and identification of various genetic gas[J]. Natural Gas Geoscience, 1993,4(2/3):1-40.
[16] 戴金星，戚厚发．我国煤成烃气的δ 13C-Ro(%) 的关系[J]．科学通报， 1989,34(9):690-692. Dai Jinxing, Qi Houfa. The δ 13C-Ro relation of coal-formed hydrocarbon in China[J]. Chinese Science Bulletin, 1989,34(9): 690-692.
[17] 胡惕麟，戈葆雄，张义纲，刘斌. 源岩吸附烃和天然气轻烃指纹参数的开发应用[J]. 石油实验地质，1990,12(4):375—379. Hu Tilin, Ge Baoxiong, Zhang Yigang, Liu Bin. The development and application of fingerprint parameters for hydrocarbons absorbed by source rocks and light hydrocarbons in natural gas[J]. Petroleum Geology & Expeximent, 1990, 12(4):375-379.
[18] 卢斌，李剑，冉启贵，林潼，李德江，刘卫红. 塔里木盆地库车坳陷东部烃源岩热模拟轻烃特征及成因判识[J]. 天然气地球科学， 2015,26(6):1129-1136. Lu Bin, Li Jian, Ran Qigui, Lin Tong, Li Dejiang, Liu Weihong. Characteristics and genesis of thermal simulation of hydrocarbon source rocks in the eastern Kuqa depression, Tarim Basin[J]. Natural Gas Geoscience, 2015,26(6):1129-1136.
[19] 姜振学，林世国，庞雄奇，王杰. 两种类型致密砂岩气藏对比[J]. 石油实验地质，2006,28(3):210-214. Jiang Zhenxue, Lin Shiguo, Pang Xiongqi, Wang Jie. The comparison of two types of tight sand gas reservoir[J]. Petroleum Geology & Experiment, 2006,28(3):210-214.
[20] 朱光有，张水昌，陈玲，杨海军，杨文静，张斌，等. 天然气充注成藏与深部砂岩储集层的形成——以塔里木盆地库车坳陷为例[J]. 石油勘探与开发，2009,36(3):347-357. Zhu Guangyou, Zhang Shuichang, Chen Ling, Yang Haijun, Yang Wenjing, Zhang Bin, et al . Coupling relationship between natural gas charging and deep sandstone reservoir formation: a case from the Kuqa depression, Tarim Basin[J]. Petroleum Exploration and Development, 2009,36(3):347-357.
[21] 张宝收，鲁雪松，孙雄伟，芦慧，卢玉红，田华. 塔里木盆地迪北致密砂岩气藏储层物性下限研究[J]. 岩性油气藏，2015,27(1):81-88. Zhang Baoshou, Lu Xuesong, Sun Xiongwei, Lu Hui, Lu Yuhong, Tian Hua. Study on the lower limit of physical properties of tight sandstone gas reservoirs in Dibei area, Tarim Basin[J]. Lithologic Reservoirs, 2015,27(1):81-88.
[22] 赵靖舟，李军，曹青，白玉彬，耳闯，王晓梅，等. 论致密大油气田成藏模式[J]. 石油与天然气地质，2013,34(5):573-583. Zhao Jingzhou, Li Jun, Cao Qing, Bai Yubin, Er Chuang, Wang Xiaomei, et al . Hydrocarbon accumulation patterns of large tight oil and gas fields[J]. Oil & Gas Geology,2013,34(5):573-583.
[23] 林潼，易士威，叶茂林，冉启贵，魏红兴，刘卫红. 库车坳陷东部致密砂岩气藏发育特征与富集规律[J]. 地质科技情报，2014, 33(2):116-122. Lin Tong, Yi Shiwei, Ye Maolin, Ran Qigui, Wei Hongxing, Liu Weihong. Characteristic of Tight sandstone gas reservoir and the enrichment regularity in eastern Kuqa depression[J]. Geological Science and Technology Information, 2014, 33(2):116-122.
[24] 严一鸣. 依奇克里克构造带侏罗系阿合组储层成岩特征研究[D]. 青岛：中国石油大学( 华东)，2016. Yan Yiming. Reservoir diagenesis characteristic of the Ahe Formation of Jurassic in Yiqikelike structural belt[D]. Qingdao: China University of Petroleum (East China), 2016.
[25] 樊阳，查明，姜林，张少鹏，张洪. 致密砂岩气充注机制及成藏富集规律[J]. 断块油气田，2014,21(1):1-6. Fan Yang, Zha Ming, Jiang Lin, Zhang Shaopeng, Zhang Hong. Charging mechanism of tight sandstone gas reservoir and its pattern of accumulation and enrichment[J]. Fault-Block Oil & Gas Field, 2014,21(1):1-6.
[26] Guo Xiaowen, Liu Keyu, Jia Chengzao. Effects of early petroleum charge and overpressure on reservoir porosity preservation in the giant Kela-2 gas field, Kuqa depression, Tarim Basin, northwest China[J]. AAPG Bulletin, 2016, 100(2):191-212.
[27] 王华超，韩登林，欧阳传湘，周嘉义，王倩倩，马力. 库车坳陷北部阿合组致密砂岩储层特征及主控因素[J]. 岩性油气藏，2019, 31(2):115-123. Wang Huachao, Han Denglin, Ouyang Chuanxiang, Zhou Jiayi, Wang Qianqian, Ma Li. Characteristics and main controlling factors of tight sandstone reservoir of Ahe Formation in northern Kuqa depression[J]. Lithologic Reservoirs, 2019, 31(2):115-123.
[28] 王业飞，王所良，徐怀民，于维钊，齐自远，吕恒宇. 沥青质与石英表面相互作用及润湿性改变机理[J]. 油气地质与采收率，2011, 18(4):72-74,81. Wang Yefei, Wang Suoliang, Xu Huaimin, Yu Weizhao, Qi Ziyuan, Lv Hengyu. Interaction between asphaltene and mechanisms of wettability alteration[J]. Petroleum Geology and Recovery Efficiency, 2011,18(4):72-74,81.
[29] 鲁雪松，柳少波，李伟，卢玉红，李勇，张宝收. 低勘探程度致密砂岩气区地质和资源潜力评价——以库车东部侏罗系致密砂岩气为例 [J]. 天然气地球科学, 2014,25(2):178-184. Lu Xuesong, Liu Shaobo, Li Wei, Lu Yuhong, Li Yong, Zhang Baoshou. Geological and resource evaluation in tight sandstone gas plays of low exploration degree:a case of Jurassic tight sandstone gas in east Kuqa Basin[J]. Natural Gas Geoscience, 2014,25(2):178-184.
[30] 邹才能，朱如凯，吴松涛，杨智，陶士振，袁选俊，等. 常规与非常规油气聚集类型、特征、机理及展望——以中国致密油和致密气为例 [J]. 石油学报，2012,33(2):173-187. Z o u C a i n e n g , Z h u R u k a i , W u S o n g t a o , Y a n g Z h i , T a o Shizhen,Yuan Xuanjun, et al . Types,characteristics,genesis and prospects of conventional and unconventional hydrocarbon accumulations:taking tight oil and tight gas in China as an instance[J]. Acta Petrolei Sinca, 2012,33(2):173-187.
[31] 魏红兴，谢亚妮，莫涛，王佐涛，黎立，史玲玲. 迪北气藏致密砂岩储集层裂缝发育特征及其对成藏的控制作用[J]. 新疆石油地质， 2015,36(6):702-707. Wei Hongxing, Xie Yani, Mo Tao, Wang Zuotao, Li Li, Shi Lingling. Fracture characteristic and its contribution to hydrocarbon accumulation in tight sandstone reservoir in Dibei gas pool in Kuqa depression, Tarim Basin[J]. Xinjiang Petroleum Geology, 2015,36(6):702-707.
[32] 康海亮，林畅松，李洪辉，王开忠库车坳陷依南地区阿合组致密砂岩气储层特征与有利区带预测[J]. 石油实验地质，2016,38(2): 162-169. Kang Hailiang, Lin Changsong, Li Honghui, Wang Kaizhong. Reservoir characteristics and favorable zone prediction of tight sandstone gas of the Ahe Formation in Yinan area， Kuqa depression[J]. Petroleum Geology & Experiment, 2016, 38(2):162-169.
[33] 鲁雪松，赵孟军，刘可禹，卓勤功，范俊佳，于志超，等. 库车前陆盆地深层高效致密砂岩气藏形成条件与机理[J]. 石油学报，2018, 39(4):365-378. Lu Xuesong, Zhao Mengjun, Liu Keyu, Zhuo Qingong, Fan Junjia, Yu Zhichao, et al . Forming condition and mechanism of highly effective deep tight sandstone gas reservoir in Kuqa foreland basin[J]. Acta Petrolei Sinica, 2018,39(4):365-378.
[34] 琚岩，孙雄伟，刘立炜，谢亚妮，魏红兴. 库车坳陷迪北致密砂岩气藏特征[J]. 新疆石油地质，2014,35(3):264-267. Ju Yan, Sun Xiongwei, Liu Liwei, Xie Yani, Wei Hongxing. Characteristics of Jurassic tight sandstone gas reservoir in Dibei area of Kuqa depression, Tarim Basin[J]. Xinjiang Petroleum Geology, 2014,35(3):264-267.
[35] 刘立炜，孙雄伟，赵英杰，金江宁. 库车坳陷迪北致密砂岩气藏油气分布特征及聚集机理[J]. 新疆石油地质，2016,37(3):257-261. Liu Liwei, Sun Xiongwei, Zhao Yingjie, Jin Jiangning. Hydrocarbon distribution and accumulation mechanism of Dibei tight sandstone gas reservoir in Kuqa depression, Tarim Basin[J]. Xinjiang Petroleum Geology, 2016,37(3):257-261.

库车坳陷北部迪北段致密油气来源与勘探方向

Source and exploration direction of tight oil and gas in the Dibei section of northern Kuqa depression

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