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南襄盆地安棚东南区核桃园组三段深层致密油储层裂缝发育特征及控制因素

黄郑 周永强 贺子潇 黎明 杨滔 王肃 李强 赵颖 尹帅

黄郑, 周永强, 贺子潇, 黎明, 杨滔, 王肃, 李强, 赵颖, 尹帅. 南襄盆地安棚东南区核桃园组三段深层致密油储层裂缝发育特征及控制因素[J]. 石油实验地质.
引用本文: 黄郑, 周永强, 贺子潇, 黎明, 杨滔, 王肃, 李强, 赵颖, 尹帅. 南襄盆地安棚东南区核桃园组三段深层致密油储层裂缝发育特征及控制因素[J]. 石油实验地质.
HUANG Zheng, ZHOU Yongqiang, HE Zixiao, LI Ming, YANG Tao, WANG Su, LI Qiang, ZHAO Ying, YIN Shuai. Development characteristics and controlling factors of fractures in deep-buried tight oil reservoirs of 3rd member of Paleogene Hetaoyuan Formation in southeast An'peng area, Nanxiang Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT.
Citation: HUANG Zheng, ZHOU Yongqiang, HE Zixiao, LI Ming, YANG Tao, WANG Su, LI Qiang, ZHAO Ying, YIN Shuai. Development characteristics and controlling factors of fractures in deep-buried tight oil reservoirs of 3rd member of Paleogene Hetaoyuan Formation in southeast An'peng area, Nanxiang Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT.

南襄盆地安棚东南区核桃园组三段深层致密油储层裂缝发育特征及控制因素

基金项目: 

国家自然科学基金项目(51974253)和中国石油化工股份有限公司河南油田分公司项目(31350016-22-ZC0613-0004)资助。

详细信息
    作者简介:

    黄郑(1974-),男,博士,高级工程师,从事油气田开发地质研究。E‑mail:huangzheng.hnyt@sinopec.com。

    通讯作者:

    尹帅(1989-),男,博士,讲师,硕士生导师,从事非常规油气地质理论及应用技术研究。E‑mail:speedysys@163.com。

  • 中图分类号: TE122.2

Development characteristics and controlling factors of fractures in deep-buried tight oil reservoirs of 3rd member of Paleogene Hetaoyuan Formation in southeast An'peng area, Nanxiang Basin

  • 摘要:

    为了探明深部致密油储层天然裂缝发育规律及其影响因素,以南襄盆地泌阳凹陷安棚东南区古近系核桃园组三段II-VI油层组致密油藏为例,利用大量岩心、薄片、物性、成像及常规测井、注水压驱等资料,系统开展了致密油藏裂缝综合评价。该区目的层II-VI油层组属扇三角洲前缘沉积,储层岩屑含量较高,为近源沉积;储层孔隙度与渗透率之间具有良好的正相关性。对于不同岩性砂岩储层,裂缝主要发育于细砂岩中,其次为粉砂岩,而含砾砂岩中裂缝通常不发育。目的层主要发育高角度缝及直立缝,其占比可达87.8%,低角度斜交缝和水平缝分别占比达7.3%及4.9%。目的层致密储层裂缝发育主控因素主要包括岩性、沉积微相及局部构造;厚度较薄、粒度较细的单砂体或复合砂体部位裂缝通常较为发育。裂缝主要发育于前缘河道、河道侧翼、河口坝及其外缘远砂坝砂体部位;而席状砂及前缘三角洲微相中裂缝不发育。此外,裂缝主要发育于构造转折端,且主要发育于正向构造的顶部及翼部。目的层裂缝主要沿着WE向、NE向分布,其次为NW向;裂缝主要形成于新近纪坳陷期(喜马拉雅晚期)。裂缝是导致致密油储层水窜的重要因素,因而要加强裂缝发育程度、扩展规模及方向的动、静态监测。

     

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  • 收稿日期:  2023-07-18
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