| 准噶尔盆地玛湖凹陷二叠系风城组页岩储集层裂缝测井识别与有效性分析* |
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| 引用本文： | 黄玉越,王贵文,宋连腾,王松,张益粼,黄立良,赖锦.准噶尔盆地玛湖凹陷二叠系风城组页岩储集层裂缝测井识别与有效性分析*[J].古地理学报,1999,24(3):540-555. |
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| 作者姓名： | 黄玉越 王贵文 宋连腾 王松 张益粼 黄立良 赖锦 |
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| 作者单位： | 1.中国石油大学(北京)地球科学学院,北京 102249;2.中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249;3.中国石油勘探开发研究院,北京 100083;4.中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依 834000 |
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| 基金项目： | *国家自然科学基金(编号: 41872133)以及中国石油—中国石油大学(北京)战略合作协议(编号: ZLZX2020-01-05-03)联合资助的成果 |
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| 摘 要： | 中国页岩油资源潜力巨大,裂缝的发育程度是影响页岩油产量高低的重要因素。以准噶尔盆地玛湖凹陷风城组页岩储集层为研究对象,通过岩心观察、薄片鉴定、常规及成像测井方法总结归纳了研究区裂缝的发育特征,提出“常规+成像+岩心”的页岩储集层裂缝测井综合识别方法,建立了典型裂缝发育类型的测井综合识别图版。结果表明,玛湖地区天然裂缝在风三段密集发育,风一段次之,风二段中部几乎不发育。裂缝主要在长英质页岩、云质页岩和混合质页岩中发育,以高角度构造裂缝与低角度成岩裂缝为主,开启程度高,少数被碳酸盐矿物充填,走向主要为NW-SE向。基于裂缝参数定量计算结果,结合岩性及矿物组分和地应力等因素分析了储集层裂缝有效性。研究认为,脆性矿物组分含量高、走向平行于现今水平最大主应力的高角度未充填裂缝发育段对储集层有效性存在明显的控制作用,与产液资料较为吻合。此裂缝测井综合评价方法效果显著,可为页岩储集层裂缝识别与有效性评价提供方法支撑。
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| 关 键 词： | 裂缝 测井识别 有效性分析 风城组 页岩 二叠系 玛湖凹陷 准噶尔盆地 |
| 收稿时间： | 2021-10-14 |
Fracture logging identification and effectiveness analysis of shale reservoir of the Permian Fengcheng Formation in Mahu sag,Junggar Basin |
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| Huang Yu-Yue,Wang Gui-Wen,Song Lian-Teng,Wang Song,Zhang Yi-Lin,Huang Li-Liang,Lai Jin.Fracture logging identification and effectiveness analysis of shale reservoir of the Permian Fengcheng Formation in Mahu sag,Junggar Basin[J].Journal of Palaeogeography,1999,24(3):540-555. |
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| Authors: | Huang Yu-Yue Wang Gui-Wen Song Lian-Teng Wang Song Zhang Yi-Lin Huang Li-Liang Lai Jin |
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| Institution: | 1.College of Geosciences,China University of Petroleum(Beijing), Beijing 102249, China;2.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;3.Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;4.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Xinjiang Karamay 834000, China |
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| Abstract: | Shale oil resources have great potential in China. Development of fractures is an important factor affecting shale oil production. Taking the shale reservoir of the Fengcheng Formation in Mahu sag of the Junggar Basin as the research object,the development characteristics of fractures in the study area are summarized through core observation,thin section identification,conventional and imaging logging methods. The comprehensive logging identification method of “conventional+imaging+core” is further proposed,and the logging comprehensive identification chart of typical fracture development types is established. The results show that the natural fractures in Mahu area intensively developed in the P1f3, less in the P1 f1, and almost none in the middle of the P1f2. Fractures mainly developed in felsic shale,dolomitic shale, and mixed shale,mainly high-angle structural fractures and low-angle diagenetic fractures,with high opening degree. A few fractures are filled with carbonate minerals,and the strike is mainly NW-SE. Based on the quantitative calculation results of fracture parameters,combined with lithology,mineral composition and in-situ stress,the effectiveness of reservoir fractures is analyzed. The study shows that the high-angle unfilled fracture development section with high content of brittle mineral components and strike parallel to the current horizontal maximum principal stress has an obvious control effect on reservoir effectiveness,which is consistent with the liquid production data. The comprehensive evaluation method of fracture logging has remarkable effect,and can provide method support for fracture identification and effectiveness evaluation of shale reservoir. |
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| Keywords: | fractures logging identification effectiveness analysis Fengcheng Formation shale Permian Mahu sag Junggar Basin |
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