柴西南区岩性油气藏地质特征及控制因素

吴颜雄; 薛建勤; 施奇; 杨芸; 刘君林; 马凤春; 李翔; 王艳清

doi:10.11781/sysydz202401022

柴西南区岩性油气藏地质特征及控制因素

doi: 10.11781/sysydz202401022

吴颜雄^{1, 2,},
薛建勤²,
施奇^{1, 2},
杨芸^{1, 2},
刘君林²,
马凤春²,
李翔³,
王艳清⁴

1.
青海省高原咸化湖盆油气地质重点实验室, 甘肃敦煌 736202
2.
中国石油青海油田分公司, 甘肃敦煌 736202
3.
中国石油勘探开发研究院西北分院, 兰州 730020
4.
中国石油杭州地质研究院, 杭州 310023

基金项目:

国家科技重大专项 2016ZX05046-006

中国石油天然气股份有限公司重大科技专项 2016E-01

详细信息

作者简介:
吴颜雄(1982-), 男, 正高级工程师, 从事油气地质勘探综合研究工作。E-mail: wyxqhyjy@petrochina.com.cn

中图分类号: TE122.3
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- 文章访问数: 380
- HTML全文浏览量: 172
- PDF下载量: 50
- 被引次数: 0
出版历程
- 收稿日期: 2023-06-20
- 修回日期: 2023-12-05
- 刊出日期: 2024-01-28

Geological characteristics and controlling factors of lithologic reservoirs in southwestern Qaidam Basin

WU Yanxiong^{1, 2
,},
XUE Jianqin²,
SHI Qi^{1, 2},
YANG Yun^{1, 2},
LIU Junlin²,
MA Fengchun²,
LI Xiang³,
WANG Yanqing⁴

1.
Qinghai Provincial Key Laboratory of Plateau Saline-Lacustrine Basinal Oil & Gas Geology, Dunhuang, Gansu 736202, China
2.
Qinghai Oilfield Branch Company Ltd., PetroChina, Dunhuang, Gansu 736202, China
3.
Northwest Branch of Exploration and Development Research Institute, PetroChina, Lanzhou, Gansu 730020, China
4.
Hangzhou Research Institute of Geology, PetroChina, Hangzhou, Zhejiang 310023, China

摘要

摘要: 近年来，柴达木盆地在咸化湖相滩坝砂中发现了多个“小而肥”的岩性油气藏。为了拓展岩性油气勘探规模、发现新的目标及区带，支撑油田规模增储上产，利用岩心、测井和地震资料，开展岩性油气藏成藏条件综合分析。通过解剖已发现岩性油气藏特征，明确控制因素，指出了岩性油气藏勘探接替领域。结果表明，柴西南区具备形成岩性油气藏的四大有利条件：一是发育继承性的七个泉—红柳泉、砂西—跃进、扎哈泉—乌南三大稳定的古斜坡，利于油气聚集成藏；二是临近红狮和扎哈泉两个生烃中心，油源条件优越；三是咸化湖盆发育大型辫状河三角洲、广覆式分布的滨浅湖滩坝砂及藻席—灰云坪沉积，形成碎屑岩和碳酸盐岩两种互补型的储集体；四是发育多种疏导体系，纵向上可以形成多套含油层系。受古构造、沉积、成岩等多因素控制，柴西南区发育砂岩上倾尖灭型、砂岩透镜体型、物性封堵型和白云石化成岩圈闭四种类型岩性油气藏。岩性油气藏受古构造、优质源岩和有效储层三因素控制。古构造决定岩性圈闭的类型和油气运移方向；优质烃源岩控制岩性油气藏的分布及规模；有效储层控制岩性油气藏的富集。综合评价指出，辫状河三角洲前缘砂体是古近系下干柴沟组下段岩性勘探的有利区，主要分布在砂西、尕斯、乌南向盆内的倾末端；白云石化成岩圈闭是古近系下干柴沟组上段岩性勘探的有利区，主要分布在环红狮凹陷周缘；广覆式分布滩坝是新近系上干柴沟组、下油砂山组岩性油气藏勘探的有利区，主要分布在英雄岭、尕斯、扎哈泉、乌南等地区。这一认识支撑了切探2井、尕斯新层系等岩性勘探获得一系列重大突破，可为柴西南区岩性油气藏的下一步勘探提供指导。
- 成藏条件 /
- 控制因素 /
- 岩性油气藏 /
- 勘探潜力 /
- 柴达木盆地
Abstract: In recent years, several small and rich lithologic oil and gas reservoirs have been discovered in the saline lacustrine beach bar sand in the Qaidam Basin. In order to expand the exploration scale of lithologic oil and gas reservoirs, find new exploration targets and zones, and increase storage and production of oilfields, based on coring, logging and seismic data, the controlling factors of oil and gas accumulation in lithologic reservoirs are defined, and some exploration succeeding fields of lithologic reservoirs are pointed out. The results show that: The southwestern Qaidam Basin has four favorable conditions for the formation of lithologic reservoirs. The first is the development of three stable ancient slopes, namely, the Qigequan-Hongliuquan, Shaxi-Yuejin, and Zahaquan-Wunan, which are inherited and conducive to the accumulation of oil and gas. The second is the proximity of two hydrocarbon generation centers, Hongshi and Zahaquan, with superior oil source conditions. The third is that the salt lake basin developed large braided river delta, widely distributed shoal-bar sand and algal hill-gray cloud flat deposits, forming two complementary types of reservoirs of clastic rock and carbonate rock. The fourth is the development of a variety of drainage systems, which can form several sets of oil-bearing strata vertically. Controlled by paleo-structural, sedimentary and diagenetic factors, there are four types of lithologic reservoirs in the southwestern Qaidam Basin: updip pinching out, sandstone lens, physical sealing and dolomitization trap. Lithologic reservoirs are controlled by three factors: paleo-structure, high-quality source rock and effective reservoir. Paleo-structure determines the type of lithologic traps and the direction of hydrocarbon migration. The high-quality source rock controls the distribution and scale of lithologic reservoirs and effective reservoir controls the accumulation of lithologic reservoirs. Comprehensive evaluation shows that the braided river delta front sand body is a favorable area for the exploration of lithologic reservoirs in the lower Ganchaigou Formation of the Lower Paleogene, mainly distributed in the basin dip end of Shaxi, Gasi, and Wunan. The dolomitization trap is a favorable area for exploration of lithologic reservoirs in the upper member of lower Ganchaigou Formation of Paleogene, mainly distributed around the Hongshi Sag. The widely distributed beach bar is a favorable area for lithologic oil exploration in the upper Ganchaigou Formation and lower Youshashan Formation of Neogene, mainly distributed in Yingxiongling, Gasi, Zhahaquan, Wunan, and other areas. This understanding supports a series of major breakthroughs in lithologic exploration, such as well Qietan 2 and the new series of Gasi, with important guiding significance for further exploration of lithologic reservoirs in the southwestern Qaidam Basin.
- reservoir formation condition /
- controlling factor /
- lithologic reservoir /
- exploration potential /
- Qaidam Basin
注释:

利益冲突声明/Conflict of Interests

所有作者声明不存在利益冲突。

All authors disclose no relevant conflict of interests.

作者贡献/Authors’Contributions

吴颜雄、施奇参与论文写作和修改；薛建勤、王艳清提供修改意见；杨芸、刘君林提供样品和资料支持；马凤春、李翔参与文章设计及讨论。所有作者均阅读并同意最终稿件的提交。

WU Yanxiong and SHI Qi participated in the writing and revision of the article. XUE Jianqin and WANG Yanqing provided revision suggestions. YANG Yun and LIU Junlin provided samples and data support. MA Fengchun and LI Xiang participated in the design and discussion of the article. All authors have read the latest version of paper and consented for submission.

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图 1 柴西南区地理位置(a)及其新生界地层综合柱状图(b)

Figure 1. Geographical location map (a) and composite bar chart (b) of southwestern Qaidam Basin

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图 2 柴西地区古近系烃源岩总有机碳含量分布

Figure 2. Total organic carbon content distribution of Paleogene source rocks in western Qaidam Basin

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图 3 咸化湖相烃源岩生烃模式

据参考文献[25]修改。

Figure 3. Hydrocarbon generation model of saline lacustrine source rocks

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图 4 柴西地区早上新世(N₂¹)时期下渐新统(E₃¹)古构造

Figure 4. Paleostructures of Lower Oligocene in western Qaidam Basin during early Pliocene

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图 5 柴西地区各层段沉积相平面分布

Figure 5. Plane distribution of sedimentary facies of each layer in western Qaidam Basin

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图 6 水槽实验模拟不同盐度条件陆源碎屑搬运距离

Figure 6. Flume experiment simulating terrigenous debris transport distance under different salinity conditions

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图 7 柴西南区岩性油气藏储层储集空间类型

a.七6-5井，2 449.04 m，E₃¹，辫状河三角洲前缘水下分流河道，粉砂岩，粒间孔和溶蚀孔，铸体薄片；b.七102井，2 464.16 m，E₃¹，辫状河三角洲前缘水下分流河道，细砂岩，粒间孔和溶蚀孔，铸体薄片；c.扎401井，3 274.43 m，N₁，滨浅湖滩坝，中细砂岩，粒间孔和溶蚀孔发育，铸体薄片；d.扎平1井，3 136.2 m，N₁，滨浅湖滩坝，细砂岩，粒间孔和溶蚀孔，铸体薄片；e.七34井，E₃¹，3 136.61 m，辫状河三角洲前缘水下分流河道，细砂岩，粒间孔和溶蚀孔，铸体薄片；f.扎2井，3 236.2 m，N₁，滨浅湖滩坝，细砂岩，粒间孔和溶蚀孔，扫描电镜；g.跃新4-6井，3 380.40 m，E₃²，滨浅湖，藻灰云岩，溶蚀孔隙，铸体薄片；h.狮41-6-1井，E₃²，3 857.9 m，浅湖，泥晶灰云岩，晶间孔和溶蚀孔，铸体薄片；i.狮41-2井，4 080 m，E₃²，白云石晶间孔，扫描电镜。

Figure 7. Effective reservoir types of lithologic reservoirs in southwestern Qaidam Basin

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图 8 柴西南区岩性圈闭类型

a.砂体上倾尖灭型：水下分流河道砂体沿物源或某一方向发生尖灭，前端为泥质沉积，后期构造抬升，形成上倾尖灭；b.砂岩透镜体：滨浅湖滩坝砂，周围被泥岩所包围，形成透镜体；c.物性封堵型：横向稳定的砂体后期受原始沉积和后期成岩作用影响，造成物性差异，形成物性封堵；d.白云石化成岩圈闭：碳酸盐岩的白云石化程度差异较大，白云石化强，孔隙发育，物性好，相反周围物性差，形成成岩圈闭。

Figure 8. Types of lithologic traps in southwestern Qaidam Basin

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图 9 柴西南区岩性圈闭及岩性油气藏分布模式

Figure 9. Distribution patterns of lithologic traps and reservoirs in southwestern Qaidam Basin

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图 10 柴西地区七个泉下渐新统岩性油气藏接力式分布模式

Figure 10. Relaying distribution pattern of lithologic reservoirs in Lower Oligocene, Qigequan area, western Qaidam Basin

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参考文献(30)

[1]	赵文智, 汪泽成, 王红军, 等. 中国中、低丰度大油气田基本特征及形成条件[J]. 石油勘探与开发, 2008, 35(6): 641-650. doi: 10.3321/j.issn:1000-0747.2008.06.001 ZHAO Wenzhi, WANG Zecheng, WANG Hongjun, et al. Principal characteristics and forming conditions for medium-low abundance large scale oil/gas fields in China[J]. Petroleum Exploration and Development, 2008, 35(6): 641-650. doi: 10.3321/j.issn:1000-0747.2008.06.001
[2]	刘震, 赵政璋, 赵阳, 等. 含油气盆地岩性油气藏的形成和分布特征[J]. 石油学报, 2006, 27(1): 17-23. LIU Zhen, ZHAO Zhengzhang, ZHAO Yang, et al. Predominant characteristics of formation and distribution for lithologic reservoirs in petroliferous basin[J]. Acta Petrolei Sinica, 2006, 27(1): 17-23.
[3]	邹才能, 贾承造, 赵文智, 等. 松辽盆地南部岩性—地层油气藏成藏动力和分布规律[J]. 石油勘探与开发, 2005, 32(4): 125-130. ZOU Caineng, JIA Chengzao, ZHAO Wenzhi, et al. Accumulation dynamics and distribution of lithostratigraphic reservoirs in south Songliao Basin[J]. Petroleum Exploration and Development, 2005, 32(4): 125-130.
[4]	李丕龙, 张善文, 宋国奇, 等. 断陷盆地隐蔽油气藏形成机制: 以渤海湾盆地济阳坳陷为例[J]. 石油实验地质, 2004, 26(1): 3-10. doi: 10.11781/sysydz200401003 LI Pilong, ZHANG Shanwen, SONG Guoqi, et al. Forming mechanism of subtle oil pools in fault basins: taking the Jiyang Depression of the Bohaiwan Basin as an example[J]. Petroleum Geology and Experiment, 2004, 26(1): 3-10. doi: 10.11781/sysydz200401003
[5]	赵贤正, 金凤鸣, 刘震, 等. 二连盆地地层岩性油藏"多元控砂—四元成藏—主元富集"与勘探实践(Ⅰ): "多元控砂"机理[J]. 岩性油气藏, 2007, 19(2): 9-15. doi: 10.3969/j.issn.1673-8926.2007.02.002 ZHAO Xianzheng, JIN Fengming, LIU Zhen, et al. "Multi-factor controlling, four-factor entrapping and key-factor enrichment" of stratigraphic-lithologic reservoirs and exploration practice in Erlian Basin(Ⅰ): "Multi-factor controlling" mechanism[J]. Lithologic Reservoirs, 2007, 19(2): 9-15. doi: 10.3969/j.issn.1673-8926.2007.02.002
[6]	付金华, 魏新善, 黄道军. 鄂尔多斯大型含煤盆地岩性气藏成藏规律与勘探技术[J]. 石油天然气学报(江汉石油学院学报), 2005, 27(S1): 137-141. FU Jinhua, WEI Xinshan, HUANG Daojun. Law of reservoir formulation and exploration techniques of natural gas lithologic reservoir in Ordos Basin[J]. Journal of Oil and Gas Technology (Journal of Jianghan Petroleum Institute), 2005, 27(S1): 137-141.
[7]	杨海军, 邬光辉, 孙丽霞, 等. 塔中北斜坡志留系岩性油藏形成条件与勘探方向[J]. 新疆石油地质, 2007, 28(3): 286-288. YANG Haijun, WU Guanghui, SUN Lixia, et al. Condition and explorative direction of lithologic reservoir of Silurian in northern slope of Tazhong Uplift[J]. Xinjiang Petroleum Geology, 2007, 28(3): 286-288.
[8]	匡立春, 吕焕通, 齐雪峰, 等. 准噶尔盆地岩性油气藏勘探成果和方向[J]. 石油勘探与开发, 2005, 32(6): 32-37. KUANG Lichun, LÜ Huantong, QI Xunfeng, et al. Exploration and targets for lithologic reservoirs in Junggar Basin, NW China[J]. Petroleum Exploration and Development, 2005, 32(6): 32-37.
[9]	贾承造, 赵文智, 邹才能, 等. 岩性地层油气藏勘探研究的两项核心技术[J]. 石油勘探与开发, 2004, 31(3): 3-9. JIA Chengzao, ZHAO Wenzhi, ZOU Caineng, et al. Two key technologies about exploration of stratigraphic/lithologicai reservoirs[J]. Petroleum Exploration and Development, 2004, 31(3): 3-9.
[10]	贾承造, 赵文智, 邹才能, 等. 岩性地层油气藏地质理论与勘探技术[J]. 石油勘探与开发, 2007, 34(3): 257-272. JIA Chengzao, ZHAO Wenzhi, ZOU Caineng, et al. Geological theory and exploration technology for lithostratigraphic hydrocarbon reservoirs[J]. Petroleum Exploration and Development, 2007, 34(3): 257-272.
[11]	刘震, 赵阳, 杜金虎, 等. 陆相断陷盆地岩性油气藏形成与分布的"多元控油—主元成藏"特征[J]. 地质科学, 2006, 41(4): 612-635. LIU Zhen, ZHAO Yang, DU Jinhu, et al. Characteristics of "multi-factor controlling and key factor entrapping" of formation and distribution of lithologic petroleum reservoirs in continental rift Basin[J]. Chinese Journal of Geology, 2006, 41(4): 612-635.
[12]	刘震, 赵阳, 金博, 等. 沉积盆地岩性地层圈闭成藏主控因素分析[J]. 西安石油大学学报(自然科学版), 2006, 21(4): 1-5. LIU Zhen, ZHAO Yang, JIN Bo, et al. Analysis of the key control factors of the formation of lithological stratigraphic traps in sedimentary basins[J]. Journal of Xi'an Shiyou University (Natural Science), 2006, 21(4): 1-5.
[13]	刘震, 陈艳鹏, 赵阳, 等. 陆相断陷盆地油气藏形成控制因素及分布规律概述[J]. 岩性油气藏, 2007, 19(2): 121-127. doi: 10.3969/j.issn.1673-8926.2007.02.025 LIU Zhen, CHEN Yanpeng, ZHAO Yang, et al. Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins[J]. Lithologic Reservoirs, 2007, 19(2): 121-127. doi: 10.3969/j.issn.1673-8926.2007.02.025
[14]	陈艳鹏, 刘震, 马达德, 等. 柴西南区岩性油藏的形成过程[J]. 石油学报, 2009, 30(2): 189-194. CHEN Yanpeng, LIU Zhen, MA Dade, et al. Accumulation process of lithologic pools in southwestern Qaidam Basin[J]. Acta Petrolei Sinica, 2009, 30(2): 189-194.
[15]	宗贻平, 付锁堂, 张道伟, 等. 柴西南区岩性油藏勘探思路及方法[J]. 新疆石油地质, 2010, 31(5): 460-462. ZONG Yiping, FU Suotang, ZHANG Daowei, et al. The idea and method for exploration of lithologic reservoir in south area in western Qaidam Basin[J]. Xinjiang Petroleum Geology, 2010, 31(5): 460-462.
[16]	石亚军, 曹正林, 张小军, 等. 柴西南地区岩性油气藏的富集特征[J]. 天然气工业, 2009, 29(2): 37-41. SHI Yajun, CAO Zhenglin, ZHANG Xiaojun, et al. Characteristics of hydrocarbon enrichment in lithologic reservoirs in the southwestern Qaidam Basin[J]. Natural Gas Industry, 2009, 29(2): 37-41.
[17]	曹正林, 孙秀建, 张小军, 等. 柴达木盆地西南区岩性油气藏勘探方法与技术[J]. 天然气地球科学, 2010, 21(2): 224-229. CAO Zhenglin, SUN Xiujian, ZHANG Xiaojun, et al. Methods and techniques of lithological reservoir exploration in southwestern Qaidam Basin[J]. Natural Gas Geoscience, 2010, 21(2): 224-229.
[18]	夏晓敏, 吴颜雄, 张审琴, 等. 湖相滩坝砂体构型及对致密油甜点开发的意义: 以柴达木盆地扎哈泉地区扎2井区为例[J]. 天然气地球科学, 2019, 30(8): 1158-1167. XIA Xiaomin, WU Yanxiong, ZHANG Shenqin, et al. Study on sand body architecture of lacustrine beach-bar and significance for development of tight oil sweet areas: case study of well Za-2 area in Zahaquan area, Qaidam Basin[J]. Natural Gas Geoscience, 2019, 30(8): 1158-1167.
[19]	吴颜雄, 薛建勤, 杨智, 等. 柴西地区扎哈泉致密油储层特征及评价[J]. 世界地质, 2018, 37(4): 1167-1176. doi: 10.3969/j.issn.1004-5589.2018.04.016 WU Yanxiong, XUE Jianqin, YANG Zhi, et al. Characteristics and evaluation of tight oil reservoirs in Zhahaquan area, western Qaidam Basin[J]. Global Geology, 2018, 37(4): 1167-1176. doi: 10.3969/j.issn.1004-5589.2018.04.016
[20]	吴颜雄, 杨晓菁, 薛建勤, 等. 柴西地区扎哈泉致密油成藏主控因素分析[J]. 特种油气藏, 2017, 24(3): 21-25. WU Yanxiong, YANG Xiaojin, XUE Jianqin, et al. Analysis on main factors controlling tight oil accumulation in Zhahaquan area, western Qaidam Basin[J]. Special Oil & Gas Reservoirs, 2017, 24(3): 21-25.
[21]	施辉, 刘震, 连良达, 等. 高原咸化湖盆岩性油气藏富集规律: 以柴达木盆地西南区为例[J]. 天然气地球科学, 2013, 24(4): 701-711. SHI Hui, LIU Zhen, LIAN Liangda, et al. Enrichment regularity of lithologic reservoirs in plateau saline lacustrine Basin: taking the southwestern Qaidam Basin for example[J]. Natural Gas Geoscience, 2013, 24(4): 701-711.
[22]	陈志勇, 张道伟, 赵东升. 柴达木盆地西部南区第三系岩性油藏勘探与实践[J]. 中国石油勘探, 2006, 11(6): 17-21. CHEN Zhiyong, ZHANG Daowei, ZHAO Dongsheng. Exploration and practice of Tertiary lithologic oil reservoir in south area of weatern Qaidam Basin[J]. China Petroleum Exploration, 2006, 11(6): 17-21.
[23]	张斌, 何媛媛, 陈琰, 等. 柴达木盆地西部咸化湖相优质烃源岩地球化学特征及成藏意义[J]. 石油学报, 2017, 38(10): 1158-1167. ZHANG Bin, HE Yuanyuan, CHEN Yan, et al. Geochemical characteristics and oil accumulation significance of the high quality saline lacustrine source rocks in the western Qaidam Basin, NW China[J]. Acta Petrolei Sinica, 2017, 38(10): 1158-1167.
[24]	赵文智, 张斌, 王晓梅, 等. 陆相源内与源外油气成藏的烃源灶差异[J]. 石油勘探与开发, 2021, 48(3): 464-475. ZHAO Wenzhi, ZHANG Bin, WANG Xiaomei, et al. Differences in source kitchens for lacustrine in-source and out-of-source hydrocarbon accumulations[J]. Petroleum Exploration and Development, 2021, 48(3): 464-475.
[25]	李国欣, 朱如凯, 张永庶, 等. 柴达木盆地英雄岭页岩油地质特征、评价标准及发现意义[J]. 石油勘探与开发, 2022, 49(1): 18-31. LI Guoxin, ZHU Rukai, ZHANG Yongshu, et al. Geological characteristics, evaluation criteria and discovery significance of Paleogene Yingxiongling shale oil in Qaidam Basin, NW China[J]. Petroleum Exploration and Development, 2022, 49(1): 18-31.
[26]	王艳清, 刘占国, 杨少勇, 等. 柴达木盆地英雄岭构造带新近系碎屑岩发育特征及油气勘探方向[J]. 中国石油勘探, 2019, 24(1): 60-71. WANG Yanqing, LIU Zhanguo, YANG Shaoyong, et al. Development characteristics and exploration targets of Neogene clastic rocks in the Yingxiongling structural belt, Qaidam Basin[J]. China Petroleum Exploration, 2019, 24(1): 60-71.
[27]	施奇, 张永庶, 吴颜雄, 等. 柴西南区湖相碳酸盐岩勘探潜力评价[J]. 断块油气田, 2018, 25(6): 715-720. SHI Qi, ZHANG Yongshu, WU Yanxiong, et al. Exploration potential evaluation of lacustrine carbonate rock in southwest Qaidam Basin[J]. Fault-Block Oil and Gas Field, 2018, 25(6): 715-720.
[28]	梁伟. 柴达木西部E₃¹、N₂¹沉积模拟研究[D]. 武汉: 长江大学, 2012. LIANG Wei. Simulation of E₃¹ and N₂¹ deposition in western Qaidam[D]. Wuhan: Yangtze University, 2012.
[29]	陶士振, 袁选俊, 侯连华, 等. 中国岩性油气藏区带类型、地质特征与勘探领域[J]. 石油勘探与开发, 2016, 43(6): 863-872. TAO Shizhen, YUAN Xuanjun, HOU Lianhua, et al. Play types, geologic characteristics and exploration domains of lithological reservoirs in China[J]. Petroleum Exploration and Development, 2016, 43(6): 863-872.
[30]	伍劲, 刘占国, 朱超, 等. 柴达木盆地西部下干柴沟组下段碎屑岩储层物性差异主控因素分析[J]. 油气地质与采收率, 2021, 28(4): 46-54. WU Jin, LIU ZhanGuo, ZHU Chao, et al. Main controlling factors of clastic reservoir property difference of Lower Ganchaigou Formation in western Qaidam Basin[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(4): 46-54.