Hydrocarbon potential and accumulation model in Chepaizi uplift, Junggar Basin

Abstract

Abstract: Sinopec’s licensed block in the western margin of the Junggar Basin is predominantly distributed in the Chepaizi uplift. Since it is far from oil sources and has complicated geologic conditions, the block is less explored with protracted exploration cycle. To clarify the hydrocarbon potential in the block and thereby provide effective guidance for future exploration operations, in-depth researches were conducted based on the distribution of formations and sedimentary facies within the Chepaizi uplift to analyze oil sources, reservoir-cap rock assemblages and other reservoir conditions systematically. Research results show that the study area has favorable petroleum geologic conditions for hydrocarbon accumulation. As the final destination for long-term migration of hydrocarbons, the block has great hydrocarbon potential. Through correlation of oil sources and investigation on accumulation periods, the fault-blanket sandstone conductivity was determined, and the hydrocarbon accumulation model characterized by “hydrocarbons supplied by lateral sources, with faults providing vertical conductivity and blanket sandstones providing horizontal conductivity, and accumulated at blanket margins” was established. In accordance with these conclusions, drilling operations were successfully deployed, and a series of discoveries with commercial values were obtained.

Key words: hydrocarbon potential, fault-blanket sandstone conductivity, accumulation model, Junggar Basin, Chepaizi uplift

Song Mingshui, Lu Mingjiu, Zhao Leqiang, Sui Fenggui. Hydrocarbon potential and accumulation model in Chepaizi uplift, Junggar Basin[J]. China Petroleum Exploration, 2016, 21(3): 83-91.

References

[1] 陈业全，王伟锋.准噶尔盆地构造演化与油气成藏特征[J]. 石油大学学报，2004,28(3):4-8. Chen Yequan, Wang Weifeng. Structural evolution and pool-forming in Junggar Basin[J]. Journal of the University of Petroleum, 2004,28(3):4-8.
[2] 吴晓智，张年富，石昕，等. 准噶尔盆地车莫古隆起构造特征与成藏模式[J].中国石油勘探，2006,11(1):65-70. Wu Xiaozhi, Zhang Nianfu, Shi Xin, et al. Characteristics and reservoiring mode of Chepaizi-Mosuowan paleo-uplift in Junggar Basin[J]. China Petroleum Exploration, 2006,11(1):65-70.
[3] 金鑫,陆永潮,卢林. 准噶尔盆地车排子地区中、新生界沉降史分析[J]. 海洋石油，2007,27(3):51-56. Jin Xin, Lu Yongchao, Lu Lin. Analysis of the Mesozoic-Cenozoic subsidence history in Chepaizi area, Junggar Basin [J].Offshore Oil, 2007,27(3):51-56.
[4] 洪太元，王离迟，张福顺，等. 准噶尔盆地西缘车排子地区地层沉积特征[J]. 中国西部油气地质，2006,2(2):164-174. Hong Taiyuan, Wang Lichi, Zhang Fushun, et al. Study on the stratigraphic and depositional features in Chepaizi uplift of western Junggar Basin[J]. West China Petroleum Geosciences, 2006,2(2):164-174.
[5] 庄新明.准噶尔盆地车排子凸起石油地质特征及勘探方向[J]. 新疆地质，2009,27(1):70-74. Zhuang Xinming. Petroleum geology features and prospecting targets of Chepaizi uplift, Junggar Basin[J]. Xinjiang Geology, 2009,27(1):70-74.
[6] 何登发，尹成，杜社宽，等. 前陆冲断带构造分段特征——以准噶尔盆地西北缘断裂构造带为例[J].地学前缘，2004,11(3):91-101. He Dengfa, Yin Cheng, Du Shekuan, et al. Characteristics of structural segmentation of foreland thrust belts-a case study of the fault belts in the northwestern margin of Junggar Basin[J].Earth Science Frontiers, 2004,11(3),91-101.
[7] 隋风贵. 准噶尔盆地西北缘构造演化及其与油气成藏的关系[J]. 地质学报，2015,89(4):779-793. Sui Fenggui. Tectonic evolution and its relationship with hydrocarbon accumulation in the northwest margin of Junggar Basin[J] Acta Geologica Sinica, 2015,89(4),779-793.
[8] 刘传虎,王学忠. 准噶尔盆地西缘车排子地区沙湾组沉积与成藏控制因素[J]. 中国石油勘探，2012,17(4):15-19. Liu Chuanhu, Wang Xuezhong. Sedimentary and hydrocarbon accumulation control factors about Shawan Formation of Chepaizi area in western Junggar Basin[J]. China Petroleum Exploration, 2012,17(4):15-19.
[9] 曹剑,胡文瑄,张义杰，等. 准噶尔盆地红山嘴—车排子断裂带含油气流体活动特点地球化学研究[J]. 地质论评, 2005,51(5):591-599. Cao Jian, Hu Wenxuan, Zhang Yijie, et al. Geochemical analysis on petroleum fluid activity in the Hongshanzui-Chepaizi fault zone , the Junggar Basin[J]. Geological Review, 2005,51(5):591-599.
[10] 徐兴友. 准噶尔盆地车排子地区油气成藏期次研究[J]. 石油天然气学报，2008,30(3):40-49. Xu Xingyou. Study on pool-forming stages of oil in Chepaizi area of Junggar Basin[J].Journal of Oil and Gas Technology, 2008,30(3):40-49.
[11] 邱楠生,查明,王绪龙．准噶尔盆地热演化历史模拟[J]．新疆石油地质，2000,21(1):38-42． Qiu Nansheng, Zha Ming, Wang Xulong. Simulation of geothermal evolution history in Junggar Basin[J].Xinjiang Petroleum Geology, 2000,21(1):38-42．
[12] 高长海，查明，曲江秀，等. 准噶尔盆地西北缘不整合储层流体包裹体特征与油气成藏期次[J]. 天然气工业，2015,35(11): 23-32. Gao Changhai, Zha Ming, Qu Jiangxiu, et al. Fluid inclusion characteristics and hydrocarbon accumulation stages of unconformable reservoirs in the northwest margin of the Junggar Basin[J]. Natural Gas Industry, 2015,35(11):23-32.
[13] 牟中海,何琰,唐勇,等．准噶尔盆地陆西地区不整合与油气成藏的关系[J]．石油学报,2005,26(3):16-20. Mu Zhonghai, He Yan, Tang Yong, et al. Relation of unconformity with hydrocarbon accumulation in Luxi area of Junggar Basin[J]. Acta Petrolei Sinica, 2005,26(3):16-20.
[14] 匡立春,唐勇,雷德文,等.准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践[J].中国石油勘探，2014,19(6)：14-23. Kuang Lichun, Tang Yong, Lei Dewen, et al. Exploration of fan-controlled large-area lithologic oil reservoirs of Triassic Baikouquan Formation in slope zone of Mahu depression in Junggar Basin[J]. China Petroleum Exploration, 2014,19(6):14-23.
[15] 张立宽，罗晓容，宋国奇，等. 油气运移过程中断层启闭性的量化表征参数评价[J]．石油学报，2013,34(1):92-100. Zhang Likuan, Luo Xiaorong, Song Guoqi, et al. Quantitative evaluation of parameters to characterize fault opening and sealing during hydrocarbon migration[J]. Acta Petrolei Sinica, 2013,34(1):92-100.
[16] 李素梅，庞雄奇，刘可禹，等. 一种快速检测油包裹体的新方法——颗粒包裹烃定量荧光分析技术及其初步应用[J]．石油实验地质, 2016,28(4):386-390. Li Sumei, Pang Xiongqi,Liu Keyu, et al. A new approach to discriminate oil fluid inclusions quickly quantitative grain fluorescence (QGF) techniques and its application[J]. Petroleum Geology & Experiment, 2016,28(4):386-390.
[17] 隋风贵，林会喜，赵乐强，等. 准噶尔盆地周缘隆起带油气成藏模式[J].新疆石油地质，2015,36(1):1-7. Sui Fenggui, Lin Huixi, Zhao Leqiang, et al. Hydrocarbon accumulation patterns in peripheral uplift belts of Junggar Basin[J]. Xinjiang Petroleum Geology, 2015,36(1):1-7.
[18] 张善文，林会喜，沈扬. 准噶尔盆地车排子凸起新近系“网毯式”成藏机制剖析及其对盆地油气勘探的启示[J]. 地质论评，2013,59(3):489-500. Zhang Shanwen, Lin Huixi, Shen Yang. Analysis on meshwork-carpet pool-forming mechanism of Chepaizi uplift and enlightenment on petroleum exploration of Junggar Basin[J]. Geological Review, 2013,59(3):489-500.