Tight Oil Exploration in Northern Songliao Basin

Abstract

Abstract: Tight sandstone oil is distributed in Gaotaizi and Fuyu oil reservoirs in the central depression in northern Songliao Basin, with accumulative resources more than 10×10⁸t. Based on exploration practices, the tight reservoirs are characterized by heterogeneity (vertically unconcentrated, laterally discontinuous, small single sand body, and variable physical properties), so they can not be developed effectively by using conventional techniques. As for heterogeneous characteristics of tight reservoirs in Daqing Oilfield, integrated technical research has been conducted since 2011 in three aspects of fine resource confirmation, horizontal well productivity increase and effective development. A series of tight oil exploration technologies have been developed, with fine resource assessment, fine sweet spot description and fine horizontal well trajectory control and oil reservoir stimulation as the representatives. Moreover, low-cost, high-efficiency factory mode has been formed for purpose of "effective development". It is shown by several years^’ practical exploration that the average oil reservoir encountering rate of horizontal wells remains above 75% and its average daily oil production at the early stage after fracturing is 30t/d, which is 17 times of its neighboring vertical wells. Three test areas are founded, with cumulative oil production more than 7 ×10⁴t and additional 3P reserves more than 2×10⁸t.

Wang Yuhua, Meng Qi’an, Liang Jiangping, Bai Xuefeng, Peng Jianliang, Xue Tao, Wang Jia. Tight Oil Exploration in Northern Songliao Basin[J]. China Petroleum Exploration, 2015, 20(4): 44-53.

References

[1] 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):1-13. He Haiqing, Li Jianzhong. PetroChina’s oil and gas exploration results, new geological theories and technological achievements since 11th Five-Year Plan Period[J].China Petroleum Exploration, 2014,19(6):1-13.
[2] 邹才能,陶士振,白斌,等.论非常规油气与常规油气的区别和联系[J].中国石油勘探，2015,20(1):1-16. Zou Caineng, Tao Shizhen, Bai Bin, et al. Differences and relations between unconventional and conventional oil and gas[J]. China Petroleum Exploration, 2015,20(1):1-16.
[3] 孙赞东，贾承造，李相方，等.非常规油气勘探与开发（上册）[M].北京：石油工业出版社，2011. Sun Zandong，Jia Chengzao，Li Xiangfang, et al. Unconventionality oil gas exploration and development(Rudin)[M]. Beijing：Petroleum Industry Press, 2011.
[4] 邹才能，陶士振，侯连华，等.非常规油气地质[M].北京：地质出版社，2011. Zou Caineng, Tao Shizhen, Hou Lianhua, et al. Unconventionality oil gas geology[M]. Beijing：Geological Publishing House, 2011.
[5] 杜金虎，何海清，杨涛，等.中国致密油勘探进展及面临的挑战[J].中国石油勘探，2014,19(1):1-9. Du Jinhu, He Haiqing, Yang Tao, et al. Progress in China^’s tight oil exploration and challenges[J]. China Petroleum Exploration, 2014,19(1):1-9.
[6] 赵继勇,刘振旺,谢启超,等.鄂尔多斯盆地姬塬油田长7致密油储层微观孔喉结构分类特征[J].中国石油勘探，2014,19(5):73-80. Zhao Jiyong, Liu Zhenwang, Xie Qichao, et al. Micro pore throat structural classification of Chang 7 tight oil reservoir of Jiyuan oilfield in Ordos Basin[J]. China Petroleum Exploration, 2014,19(5):73-80.
[7] 付金华,罗安湘,张妮妮,等.鄂尔多斯盆地长7油层组有效储层物性下限的确定[J].中国石油勘探，2014,19(6):82-88. Fu Jinhua, Luo Anxiang, Zhang Nini, et al. Determine lower limits of physical properties of effective reservoirs in Chang 7 oil formation in Ordos Basin[J]. China Petroleum Exploration, 2014,19(6):82-88.
[8] 徐美娥，尹伟，陈冬，等.鄂尔多斯盆地红河油田延长组致密砂岩储层反演预测[J].中国石油勘探，2015,20(1):63-68. Xu Meie, Yin Wei, Chen Dong, et al. Inversion prediction of tight sandstone reservoir of Yangchang Formation of Honghe oilfield in Ordos Basin[J]. China Petroleum Exploration, 2015,20(1):63-68.
[9] 赵政璋，杜金虎.致密油气[M].北京：石油工业出版社，2012. Zhao Zhengzhang, Du Jinhu. Tight oil gas[M]. Beijing: Petroleum Industry Press，2012.
[10] 郭秋麟，陈宁生，吴晓智，等.致密油资源评价方法研究[J].中国石油勘探，2013,18(2):67-76. Guo Qiulin, Chen Ningsheng, Wu Xiaozhi, et al. Method for assessment of tight oil resources[J]. China Petroleum Exploration, 2013,18(2):67-76.
[11] 白斌，朱如凯，吴松涛，等. 非常规油气致密储层微观孔喉结构表征新技术及意义[J]. 中国石油勘探，2014,19(3):78-86. Bai Bin, Zhu Rukai, Wu Songtao, et al. New micro-throat structural characterization techniques for unconventional tight hydrocarbon reservoir[J]. China Petroleum Exploration, 2014, 19(3):78-86.
[12] 贾承造，邹才能，李建忠，等. 中国致密油评价标准、主要类型、基本特征及资源前景[J]. 石油学报，2012,33(3):343-350. Jia Chengzao, Zou Caineng, Li Jianzhong, et al. Assessment criteria, main types, basic features and resource prospects of the tight oil in China[J]. Acta Petrolei Sinica, 2012,33(3):343-350.
[13] 崔俊,周莉,张小波,等.柴达木盆地乌南油田致密砂岩储层特征[J].中国石油勘探, 2013,18(1):22-28. Cui Jun, Zhou Li, Zhang Xiaobo, et al. Characteristics of compact rock reservoir of Wunan oil field in Qaidam Basin[J].China Petroleum Exploration, 2013,18(1):22-28.
[14] 邢福松，秦凤启，王孟华,等. 束鹿凹陷泥灰岩致密油气藏储层预测技术研究与应用[J]. 中国石油勘探, 2013,18(3):46-49. Xing Fusong, Qin Fengqi, Wang Menghua, et al. Research and application of forecast technology on muddy limestone compact hydrocarbon reservoir in Shulu sag[J]. China Petroleum Exploration, 2013,18(3):46-49.
[15] 韩国猛,周素彦,唐鹿鹿,等.歧口凹陷歧北斜坡沙一下亚段致密砂岩油形成条件[J].中国石油勘探，2014,19(6):89-96. Han Guomeng, Zhou Suyan, Tang Lulu, et al. Geological conditions for lower Es1 tight sandstone oil in Qibei slope of Qikou depression[J]. China Petroleum Exploration, 2014,19(6):89-96.
[16] 邹才能，董大忠，王社教，等.中国页岩气形成机理、地质特征及资源潜力[J]. 石油勘探与开发，2010,37(6):641-653. Zou Caineng, Dong Dazhong, Wang Shejiao, et al. Geological characteristics, formation mechanism and resource potential of shale gas in China[J]. Petroleum Exploration and Development, 2010,37(6):641-653.
[17] 赵靖舟. 非常规油气有关概念、分类及资源潜力[J].天然气地球科学，2012,23(3):393-406. Zhao Jingzhou. Conception, classification and resource potential of unconventional hydrocarbons[J]. Natural Gas Earth Science, 2012,23(3):393-406.
[18] 高瑞祺，蔡希源.松辽盆地油气田形成条件与分布规律[M].北京：石油工业出版社，1997. Gao Ruiqi, Cai Xiyuan. Oil-gas field formation and distribution in Songliao Basin[M]. Beijing：Petroleum Industry Press, 1997.
[19] 冯志强，张顺，冯子辉.在松辽盆地发现^“油气超压运移包络面^”的意义及油气运移和成藏机理探讨[J]. 中国科学：地球科学版，2011，41(12):1872-1883. Feng ZhiQiang, Zhang Shun, Feng Zihui. Discovery of^"enveloping surface of oil and gas overpressure migration^"in the Songliao Basin and its bearings on hydrocarbon migration and accumulation mechanisms[J]. Science China:Earth Science,2011,41(12):1872-1883.
[20] 刘云武,唐振国,张永清.松辽盆地两江地区扶余油层河道储层描述方法与应用[J].中国石油勘探,2011,16(2):44-48. Liu Yunwu,Tang Zhenguo, Zhang Yongqing.Reservoir description of river channel of Fuyu reservoir in Two-river area of Songliao Basin[J].China Petroleum Exploration, 2011,16(2):44-48.
[21] 侯启军，冯志强，冯子辉.松辽盆地陆相石油地质[M].北京：石油工业出版社，2009. Hou qijun, Feng zhiqiang, Feng Zihui. Terrestrial petroleum geology of Songliao Basin[M]. Beijing: Petroleum Industry Press, 2009.
[22] 张庆国，鲍志东，那未红，等. 松辽盆地中央凹陷南部下白垩统泉头组四段沉积相[J]. 古地理学报，2007,9(3):267-276. Zhang Qingguo, Bao Zhidong, Na Weihong, et al. Sedimentary facies of the Member 4 of Quantou Formation of Lower Cretaceous in southern Central depression of Songliao Basin[J]. Journal of Palaeogeography, 2007,9(3):267-276.
[23] 王始波，李忠权，王丽丽，等.松辽盆地朝长地区扶余油层沉积特征[J].大庆石油地质与开发，2011,30(5):1-7. Wang Shibo, Li Zhongquan, Wang Lili, et al. Sedimentary characteristics of Fuyu oil layers in Chaochang region of Songliao Basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2011,30(5):1-7.
[24] 黄薇，梁江平，赵波，等.松辽盆地北部白垩系泉头组扶余油层致密油成藏主控因素[J]. 古地理学报，2013,15(5):635-644. Huang Wei, Liang Jiangping, Zhao Bo, et al. Main controlling factors of tight oil accumulations in the Fuyu layer of Cretaceous Quantou Formation in northern Songliao Basin[J]. Journal of Palaeogeography, 2013,15(5):635-644.
[25] 刘雪雪，付广，李冬春，等.松北探区扶余油层油气成藏有利区预测[J].大庆石油地质与开发，2012,31(6):15-19. Liu Xuexue, Fu Guang, Li Dongchun, et al. Prediction of the favorable hydrocarbon reservoir formation in Fuyu oil layers of Songbei exploratory area[J]. Petroleum Geology & Oilfield Development in Daqing, 2012,31(6):15-19.
[26] 黎菁，杨勇，王少飞，等.苏里格气田东区致密砂岩储层物性下限值的确定[J].特种油气藏，2011,1(6):52-57. Li Jing, Yang Yong, Wang Shaofei, et al. Determination of the lower limits of the physical properties of consolidated sandstone reservoirs in eastern Sulige gas field[J]. Special Oil and Gas Reservoirs, 2011,1(6):52-57.
[27] 贾承造，郑民，张永峰.中国非常规油气资源与勘探开发前景[J]. 石油勘探与开发，2012,39(2):129-136. Jia Chengzao, Zheng Min, Zhang Yongfeng. Unconventional hydrocarbon resources in China and the prospect of exploration and development[J]. Petroleum Exploration and Development, 2012,399(2):129-136.
[28] 郭秋麟，周长迁，陈宁生，等. 非常规油气资源评价方法研究[J]. 岩性油气藏，2011,23(4):12-19. Guo Qiulin, Zhou Changqian, Chen Ningsheng, et al. Evaluation methods for unconventional hydrocarbon resources[J]. Lithologic Reservoirs, 2011,23(4):12-19.
[29] 金成志，杨东，张永平，等. 松辽盆地北部非均质致密油水平井增产改造设计优化技术[J].中国石油勘探，2014,19(6):40-46. Jin Chengzhi, Yang Dong, Zhang Yongping, et al. Optimization techniques for stimulation design of horizontal wells of heterogeneous tight oil in northern Songliao Basin[J]. China Petroleum Exploration, 2014,19(6):40-46.
[30] 任勇，冯长青，胡相君，等.长庆油田水平井体积压裂工具发展浅析[J].中国石油勘探，2015,20(2):75-81. Ren Yong, Feng Changqing, Hu Xiangjun, et al. Analysis of volume-fracturing tools developed for horizontal wells in Changqing oilfield[J]. China Petroleum Exploration, 2015,20(2):75-81.
[31] 杨华，李士祥，刘显阳.鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报，2013,34(1):1-11. Yang Hua, Li Shixiang, Liu Xianyang. Characteristics and resource prospects of tight oil and shale oil in Ordos Basin[J]. Acta Petrolei Sinica, 2013,34(1):1-11.