前陆冲断带油气资源潜力、勘探领域分析与有利区带优选

doi:10.3969/j.issn.1672-7703.2019.01.006

摘要/Abstract

摘要： "十二五"以来前陆冲断带勘探取得了一些重大成果，推动了前陆盆地大油气区勘探进程，进一步夯实了西气东输的资源基础。近期勘探进展趋于缓慢，既显示出较大增储潜力，也面临较大挑战共存的局面，未来总体勘探前景仍然较大。通过文献调研、勘探和研究进展跟踪，基于第四次油气资源评价结果和近期勘探认识，剖析了塔里木库车、柴西南、川西北、准南缘、塔西南前陆冲断带等近期勘探重点领域和潜力区带的成藏地质条件。结合烃源岩、储层、盖层、成藏要素匹配、圈闭、保存六大成藏条件分析，从勘探层系、有利面积、资源储量规模、构造+圈闭类型与目标储备、有利因素、地质风险六方面开展区带综合评价和有利勘探区带优选，按3个层次优选出前陆冲断带勘探增储的7个现实区带、6个接替区带、9个准备区带，预计未来5年可新增天然气地质储量6500×10⁸m³、石油地质储量3.5×10⁸t。分析了前陆冲断带地质研究上存在的复杂构造三维精细模型构建、有利相带和优质储层预测、油气成藏差异性与要素匹配性、构造圈闭有效性评价四大关键地质问题，勘探技术上面临的复杂构造精准成像、低信噪比、（剩余）静校正、安全高效钻井四大配套技术挑战。以库车前陆北部构造带、塔西南前陆冲断带、川西北前陆冲断带为例，针对前陆冲断带不同类型领域、重点区带勘探面临的关键问题，提出了相应的勘探研究对策和部署建议。

关键词: 前陆冲断带, 勘探现状, 油气资源潜力, 勘探领域, 成藏条件, 综合评价, 有利区带

Abstract: Significant achievements have been made in exploring foreland thrust belts, which promoted the exploration process of large oil and gas provinces in foreland basins since the 12^th Five-Year Plan and further consolidated the resource base of the West-East Gas Pipeline. However, the recent exploration progress has become slow. On the one hand, it brought a large potential for increasing reserves, and on the other hand, there are many challenges. There is a good prospect of exploration in this area. Based on references, follow-up of exploration and research progress, the results of the fourth oil and gas resources evaluation and the latest understanding of exploration, the important exploration fields and potential accumulation conditions have been investigated in the foreland thrust belts in Kuqa of the Tarim Basin, the southwestern Qaidam Basin, the northwestern Sichuan Basin, the southern margin of Junggar Basin, and the southwestern Tarim Basin. Source rocks, reservoirs, caprocks, accumulation factors, traps and preservation conditions have been analyzed, potential favorable zone evaluation and optimization has been finished based on exploration targets, favorable areas, resource scales, structures and trap types, expected reserves, favorable factors and geological risks, and finally 7 implementable zones, 6 alternate zones and 9 preparatory zones are proposed, which will provide natural gas geological reserves of 6500×10⁸m³ and oil geological reserves of 3.5×10⁸t in 5 years. Four key geological problems have been analyzed, involving building complex 3D models, predicting favorable belts and good reservoirs, hydrocarbon accumulation difference and factors configuration, and effective evaluation to structural traps, as well as supporting technologies such as precise imaging of complex structures, low SNR, (residual) static correction, safe and efficient drilling. Taking the northern tectonic belt in Kuqa foreland, the foreland thrust belt in southwestern Tarim, and the foreland thrust belt in northwestern Sichuan Basin as examples, exploration strategies and deployment recommendations are proposed.

Key words: foreland thrust belt, exploration status, oil and gas resources potential, exploration field, accumulation conditions, comprehensive evaluation, favorable zone

中图分类号:

蔚远江, 杨涛, 郭彬程, 许小溪, 詹路锋, 杨超. 前陆冲断带油气资源潜力、勘探领域分析与有利区带优选[J]. 中国石油勘探, 2019, 24(1): 46-59.

Yu Yuanjiang, Yang Tao, Guo Bincheng, Xu Xiaoxi, Zhan Lufeng, Yang Chao. Oil and gas resources potentials, exploration fields and favorable zones in foreland thrust belts[J]. China Petroleum Exploration, 2019, 24(1): 46-59.

参考文献

[1] 甘克文.世界含油气盆地图说明书[M].北京:石油工业出版社,1992. Gan Kewen. Specifications for world atlas of oil and gas basins[M]. Beijing:Petroleum Industry Press, 1992.
[2] 张爱卿,甘克文.世界沉积盆地含油气性分类统计分析[J].石油勘探与开发,1994,21(4):36-42. Zhang Aiqing, Gan Kewen. Statistical analysis for petroleum-bearing quality of sedimentary basins[J]. Petroleum Exploration and Development, 1994,21(4):36-42.
[3] 杜金虎,杨涛,李欣.中国石油天然气股份有限公司"十二五"油气勘探发现与"十三五"展望[J].中国石油勘探,2016,21(2):1-15. Du Jinhu, Yang Tao, Li Xin. Oil and gas exploration and discovery of PetroChina Company Limited during the 12^th Five-Year Plan and the prospect during the 13^th Five-Year Plan[J]. China Petroleum Exploration, 2016,21(2):1-15.
[4] 侯启军,何海清,李建忠,杨涛.中国石油天然气股份有限公司近期油气勘探进展及前景展望[J].中国石油勘探,2018,23(1):1-13. Hou Qijun, He Haiqing, Li Jianzhong, Yang Tao. Recent progress and prospect of oil and gas exploration by PetroChina Company Limited[J]. China Petroleum Exploration, 2018, 23(1):1-13.
[5] 何海清,李建忠.中国石油"十一五"以来油气勘探成果、地质新认识与技术进展[J].中国石油勘探,2014,19(6):1-12. He Haiqing, Li Jianzhong. Petro China's oil and gas exploration results, new geological theories and technological chievements since 11^th Five-Year Plan Period[J]. China Petroleum Exploration, 2014,19(6):1-12.
[6] 付锁堂,马达德,陈琰,张国卿,伍坤宇.柴达木盆地油气勘探新进展[J].石油学报,2016,37(增刊1):1-10. Fu Suotang, Ma Dade, Chen Yan, Zhang Guoqing, Wu Kunyu. New advance of petroleum and gas exploration in Qaidam Basin[J]. Acta Petrolei Sinica, 2016,37(S1):1-10.
[7] 王招明,谢会文,李勇,雷刚林,吴超,杨宪彰,等.库车前陆冲断带深层盐下大气田的勘探和发现[J].中国石油勘探,2013,18(3):1-11. Wang Zhaoming, Xie Huiwen, Li Yong, Lei Ganglin, Wu Chao, Yang Xianzhang, et al. Exploration and discovery of large and deep subsalt gas fields in Kuqa foreland thrust belt[J]. China Petroleum Exploration, 2013,18(3):1-11.
[8] 王招明,李勇,谢会文,能源.库车前陆盆地超深层大油气田形成的地质认识[J].中国石油勘探,2016,21(1):37-43. Wang Zhaoming, Li Yong, Xie Huiwen, Neng Yuan. Geological understanding on the formation of large-scale ultra-deep oil-gas field in Kuqa foreland basin[J]. China Petroleum Exploration, 2016,21(1):37-43.
[9] 管树巍,何登发,雷永良,陈竹新.中国中西部前陆冲断带运动学分类、模型与勘探领域[J].石油勘探与开发,2013,40(1):66-78. Guan Shuwei, He Dengfa, Lei Yongliang, Chen Zhuxin. Kinematic classification, structural modeling and prospective fields of the foreland thrust belts in midwest China[J]. Petroleum Exploration and Development, 2013,40(1):66-78.
[10] 吴疆.前陆盆地研究现状及主要进展[J].内蒙古石油化工,2011(3):126-129. Wu Jiang. Status and major advancements in study of the foreland basin[J]. Inner Mongolia Petrochemical Industry, 2011(3):126-129.
[11] 国土资源部.石油天然气储量计算规范:DZ/T 0217-2005[S].北京:中国标准出版社,2005. Ministry of Land and Resources. Specification for calculation of petroleum and natural gas reserves:DZ/T 0217-2005[S]. Beijing:Standards Press of China, 2005.
[12] 王学军,蔡加铭,魏小东.油气勘探领域地球物理技术现状及其发展趋势[J].中国石油勘探,2014,19(4):30-42. Wang Xuejun, Cai Jiaming, Wei Xiaodong. The current status and development trend of geophysical technology for oil and gas exploration[J]. China Petroleum Exploration, 2014,19(4):30-42.
[13] 石林,汪海阁,纪国栋.中国石油钻井工程技术现状、挑战及发展趋势[J].天然气工业,2013,33(10):1-10. Shi Lin, Wang Haige, Ji Guodong. Current situation, challenges and developing trend of CNPC'S oil & gas drilling[J]. Natural Gas Industry, 2013,33(10):1-10.
[14] 范增辉,王健,游浩,蒲莉萍,李洪刚,陈燕辉.塔西南前陆盆地喀什北区块复杂山地地震采集新进展[J].重庆科技学院学报:自然科学版,2014,16(2):30-33. Fan Zenghui, Wang Jian, You Hao, Pu Liping, Li Honggang, Chen Yanhui. New progress of seismic acquisition in complex mountains of northern Kashi block in foreland Tarim Basin[J].Journal of Chongqing University of Science and Technology:Natural Science Edition,2014,16(2):30-33.
[15] 赵文智,王红军,单家增,王兆云,赵长毅,汪泽成.库车坳陷天然气高效成藏过程分析[J].石油与天然气地质,2005,26(6):703-710. Zhao Wenzhi, Wang Hongjun, Shan Jiazeng, Wang Zhaoyun, Zhao Changyi, Wang Zecheng. Analysis of highly eficient gas reservoiring process in Kuqa depression[J]. Oil & Gas Geology, 2005,26(6):703-710.
[16] 赵文智,王兆云,汪泽成,王红军,张水昌,王云鹏,等.高效气源灶及其对形成高效气藏的作用[J].沉积学报,2005,23(4):709-718. Zhao Wenzhi, Wang Zhaoyun, Wang Zecheng, Wang Hongjun, Zhang Shuichang, Wang Yunpeng, et al. Concept, connotation and evaluation index of high effective gas source kitchen and its action to the formation of high effective gas pool[J]. Acta Sedimentologica Sinica, 2005,23(4):709-718.
[17] 滕学清,李勇,杨沛,杨克基,李宁,谢恩.库车坳陷东段差异构造变形特征及控制因素[J].油气地质与采收率,2017,24(2):15-21. Teng Xueqing,Li Yong,Yang Pei,Yang Keji,Li Ning,Xie En. Differential structural deformation and its control factors in the eastern segment of Kuqa depression[J]. Petroleum Geology and Recovery Efficiency,2017,24(2):15-21.
[18] 杨向同,郑子君,张杨,于银华,冯觉勇,王振兰,等.地质工程一体化在应力敏感型致密储层产能预测中的应用——以库车西部某区块为例[J].中国石油勘探,2017,22(1):61-74. Yang Xiangtong, Zheng Zijun, Zhang Yang, Yu Yinhua, Feng Jueyong, Wang Zhenlan, et al. Application of geology-engineering integration in productivity prediction for stress-sensitive tight reservoir:a case study of×block in western Kuqa[J]. China Petroleum Exploration, 2017,22(1):61-74.
[19] 中国石油集团科学技术研究院,塔里木油田,新疆油田,青海油田,中科院地质与地球物理所,中国石油大学,等.国家重大科技专项"前陆盆地油气成藏规律、关键技术及目标评价(二期)"中期评估报告[R]. 2013:37-40. CNPC Research Institute of Science and Technology, Tarim Oilfield Company, Xinjiang Oilfield Company, Qinhai Oilfield Company, Institute of Geology and Geophysics (CAS), China University of Petroleum, et al. National key science and technology projects "Midterm evaluation report of hydrocarbon accumulation law, key technology and target evaluation (two phase) in foreland basin"[R]. 2013:37-40.
[20] 赵孟军,卓勤功,陈竹新,等. 含盐前陆盆地油气地质与勘探[M].北京:石油工业出版社,2016:14-31. Zhao Mengjun, Zhuo Qingong, Chen Zhuxin, et al. Oil and gas geology and exploration in salt-bearing foreland basin[M]. Beijing:Petroleum Industry Press, 2016:14-31.
[21] 卓勤功,赵孟军,邹开真,付晓飞.中国中西部前陆冲断带油气分布规律及勘探领域[J].新疆石油地质,2018,39(2):125-133. Zhuo Qingong, Zhao Mengjun, Zou Kaizhen, Fu Xiaofei. Petroleum distribution in foreland thrust belts and its exploration areas in midwest China[J]. Xinjiang Petroleum Geology, 2018,39(2):125-133.
[22] 邵绪鹏,靳久强,沈亚,孟庆洋,王鹏,伍坤宇,等.柴西地区新生代构造变形时空次序及油气意义[J].油气地质与采收率,2018, 25(1):14-20. Shao Xupeng,Jin Jiuqiang,Shen Ya,Meng Qingyang,Wang Peng,Wu Kunyu,et al. Spatial and temporal order of Cenozoic structure deformation in the western Qaidam Basin and its hydrocarbon significance[J]. Petroleum Geology and Recovery Efficiency,2018,25(1):14-20.
[23] 李国辉,李楠,谢继容,杨家静,唐大海.四川盆地上三叠统须家河组前陆大气区基本特征及勘探有利区[J].天然气工业,2012,32(3):15-21,122. Li Guohui, Li Nan, Xie Jirong, Yang Jiajing, Tang Dahai. Basic features of large gas play fairways in the upper Triassic Xujiahe Formation of the Siochuan Foreland Basin and evaluation of favorable exploration zones[J]. Natural Gas Industry,2012,32(3):15-21,122.
[24] 郑志红,李登华,白森舒,贾君,昝昕,刘卓亚,等.四川盆地天然气资源潜力[J].中国石油勘探,2017,22(3):12-20. Zheng Zhihong, Li Denghua, Bai Senshu, Jia Jun, Zan Xin, Liu Zhuoya, et al. Resource potentials of natural gas in Sichuan Basin[J]. China Petroleum Exploration, 2017,22(3):12-20.
[25] 罗兰,王兴志,李勇,张芮,王楠.川西北地区中二叠统沉积相特征及其对储层的影响[J]. 特种油气藏,2017,24(4):60-66. Luo Lan, Wang Xingzhi, Li Yong, Zhang Rui, Wang Nan. Sedimentary facies in middle Permian series in northwest Sichuan and its effect on reservoirs[J]. Special Oil & Gas Reservoirs, 2017,24(4):60-66.
[26] 金之钧,蔡勋育,刘金连,张宇,程喆.中国石油化工股份有限公司近期勘探进展与资源发展战略[J].中国石油勘探,2018,23(1):14-25. Jin Zhijun, Cai Xunyu, Liu Jinlian, Zhang Yu, Cheng Zhe. The recent exploration progress and resource development strategy of China Petroleum and Chemical Corporation[J]. China Petroleum Exploration, 2018,23(1):14-25.
[27] 管树巍,陈竹新,方世虎.准噶尔盆地南缘油气勘探的三个潜在领域:来自构造模型的论证[J].石油勘探与开发,2012,39(1):37-44. Guan Shuwei,Chen Zhuxin,Fang Shihu. Three potential exploration areas of southern Junggar Basin discussed by structural modeling[J]. Petroleum Exploration and Development,2012,39(1):37-44.
[28] 赵孟军,卓勤功,鲁雪松.我国中西部前陆冲断带断裂-盖层控藏组合、油气有序聚集与大型油气田分布[C].北京:第六届中国石油地质年会,2015:14-31. Zhao Mengjun, Zhuo Qingong, Lu Xuesong. Fault-cap rock reservoir-controlling assemblage, orderly hydrocarbon accumulation and distribution of large oil and gas fields in the foreland thrust belts of midwest China[C]. Beijing:The sixth China Petroleum Geology Annual Meeting, 2015:14-31.
[29] 牛嘉玉,姜雪竹,刘海涛,蒋凌志,吴小洲. 成熟探区精细勘探分层系区带评价方法[J].石油勘探与开发,2013,40(1):27-35. Niu Jiayu, Jiang Xuezhu, Liu Haitao, Jiang Lingzhi, Wu Xiaozhou. Detailed assessment of a single-combination oil-gas accumulation zone in a mature exploration basin,China[J]. Petroleum Exploration and Development, 2013,40(1):27-35.
[30] 庞雄奇,夏庆龙,林畅松,姜福杰.油气分布门限与成藏区带预测[M].北京:科学出版社,2015. Pang Xiongqi,Xia Qinglong,Lin Changsong,Jiang Fujie. Hydrocarbon distribution threshold and accumulation areaprediction[M]. Beijing:Science Press, 2015.
[31] 甘克文.漫谈前陆逆掩断层带油气勘探的经验教训[J].石油与天然气地质,2004,25(2):149-155. Gan Kewen. An informal discussion on experiences and lessons of petroleum exploration in foreland over-thrust zone[J]. Oil & Gas Geology,2004,25(2):149-155.