岩性油气藏 ›› 2015, Vol. 27 ›› Issue (1): 51–57.doi: 10.3969/j.issn.1673-8926.2015.01.008

• 油气地质 • 上一篇    下一篇

七里村油田长 6 油层组储层特征及孔隙演化

杜贵超1,胡双全1,石立华1,魏繁荣2   

  1.  1. 陕西省延长石油(集团)有限责任公司 研究院,西安 710075 ;2. 陕西省延长油田股份有限公司 七里村采油厂,陕西 延安 717111
  • 出版日期:2015-02-03 发布日期:2015-02-03
  • 第一作者:杜贵超( 1983- ),男,博士,工程师,主要从事油气勘探综合地质研究工作。 地址:( 710075 )陕西省西安市高新区科技二路 7 5 号。 E-mail : duguichao@sina.com 。

Reservoir characteristics and pore evolution of Chang 6 oil reservoir set in Qilicun Oilfield

DU Guichao1, HU Shuangquan1, SHI Lihua1, WEI Fanrong2   

  1.  1. Research Institute of Yanchang Petroleum Corporation, Xi ’ an 710075, China; 2. Qilicun Oil Production Plant ,Yanchang Oilfield Company Ltd.,Yan ’ an 717111, Shannxi,China
  • Online:2015-02-03 Published:2015-02-03

摘要:

通过孔渗、压汞、薄片鉴定和扫描电镜等分析资料,以鄂尔多斯盆地七里村油田三叠系延长组长 6油层组储层为研究对象,系统开展了储层特征及孔隙演化等研究。 结果表明:研究区长 6 油层组储层砂岩以细粒长石砂岩为主,矿物成分成熟度低,结构成熟度高;储层呈现出低孔、低渗—特低渗特征。 长 6 储层砂岩总体处于晚成岩 A 期,其经历了强烈的成岩作用改造,孔隙度与渗透率相关性较差。 影响储层物性及孔隙演化的主要因素是机械压实作用、溶蚀作用及胶结作用。 机械压实作用在早成岩期对储层物性影响最大,可使粒间孔隙急剧减小,物性变差。 主要的胶结类型为碳酸盐胶结、石英次生加大及黏土矿物胶结,它们均使得物性进一步变差,而长石、岩屑颗粒及浊沸石胶结物的溶蚀作用改善了碎屑的孔喉结构,加大了次生孔隙空间,是物性得以改善的根本原因。

关键词: 孔隙演化, 成岩作用, 储层物性, 延长组, 七里村油田, 鄂尔多斯盆地

Abstract:

Based on porosity and permeability measurements, mercury penetration, thin section analysis and SEM observations, this paper studied the reservoir characteristics and pore evolution of Chang 6 oil reservoir set of Triassic Yanchang Formation in Qilicun Oilfield, Ordos Basin. The result shows that reservoir sandstones are mainly fine grained arkose sandstone and characterized by low compositional maturity and high textural maturity. Reservoir properties of the study area show low porosity and low to extra-low permeability features. There is poor correlation between porosity and permeability, indicating strong diagenetic reformation of the reservoir sandstones. The Chang 6 reservoir is mainly in late diagenetic A stage. The main factors, influencing reservoir properties and pore evolution, are compaction, dissolution and cementation, among which compaction plays a key role in reservoir property reformation. The main cementation types include carbonate cementation, quartz overgrowth and clay mineral cementation, and they destroyed reservoir pores further. Dissolutions of feldspar, rock debris and laumontite cements widely occurred in the reservoir sandstones, and they increased the secondary pore spaces and improved the reservoir properties.

Key words: pore evolution , diagenesis , reservoir properties , YanchangFormation , Qilicun Oilfield , Ordos Basin

[1]姚泾利,王克,宋江海,等.鄂尔多斯盆地姬塬地区延长组石油运聚规律研究[J].岩性油气藏,2007,19(3):32-37.

Yao Jingli,Wang Ke,Song Jianghai,et al. Petroleum migration and accumulation of Yanchang Formation in Jiyuan area,Ordos Basin[J]. Lithologic Reservoirs,2007,19(3):32-37.

[2]郑荣才,耿威,周刚,等.鄂尔多斯盆地白豹地区长 6 砂岩成岩作用与成岩相研究[J].岩性油气藏,2007,19(2):21-26.

Zheng Rongcai,Geng Wei,Zhou Gang,et al. Diagenesis and diagenetic facies of Chang 6 sandstone of Yanchang Formation in Baibao area,Ordos Basin[J]. Lithologic Reservoirs,2007,19(1):21-26.

[3]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.

Yang Hua,Liu Xianyang,Zhang Caili,et al. The main controlling factors and distribution of low permeability lithologic reservoirs of Triassic Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs,2007,19(3):1-6.

[4]魏钦廉,郑荣才,肖玲,等.鄂尔多斯盆地吴旗地区长 6 储层特征及影响因素分析[J].岩性油气藏,2007,19(4):45-50.

Wei Qinlian,Zhen Rongcai,Xiao Ling,et al. Influencing factors and characteristics of Chang 6 reservoir in Wuqi area, Ordos Basin [J]. Lithologic Reservoirs,2007,19(4):45-50.

[5]赵靖舟,吴少波,武富礼.论低渗透储层的分类与评价标准——— 以鄂尔多斯盆地为例[J].岩性油气藏,2007,19(3):28-31.

Zhao Jingzhou,Wu Shaobo,Wu Fuli. The classification and evaluation criterion of low permeability reservoir:An example from Ordos Basin[J]. Lithologic Reservoirs,2007,19(3):28-31. 

[6]李元昊,刘池洋,独育国,等.鄂尔多斯盆地西北部上三叠统延长组长 8 油层组浅水三角洲沉积特征及湖岸线控砂[J].古地理学报,2009,11(3):265-274.

Li Yuanhao,Liu Chiyang,Du Yuguo,et al. Sedimentary characteristics of shallow water delta and lake shoreline control on sandbodies of Chang 8 oil-bearing interval of the Upper Triassic Yanchang Formation in northwestern Ordos Basin[J]. Journal of Paleogeography, 2009,11(3):265-274.

[7]张林森.延长油田中生界石油地质特征与高效勘探[M].北京:石油工业出版社,2009.

Zhang Linsen. Mesozoic petroleum geology and effective exploration of Yanchang oil field[M]. Beijing:Petroleum Industry Press,2009.

[8]何自新.鄂尔多斯盆地构造演化与油气[M].北京:石油工业出版社,2003:33-35.

He Zixin. Tectonic evolution and petroleum resources of Ordos Basin[M]. Beijing:Petroleum Industry Press,2003:33-35.

[9]吴崇筠,薛叔浩.中国含油气盆地沉积学[M].北京:石油工业出版社,1992:265-270.

Wu Chongyun,Xue Shuhao. Sedimentology of oil and gas bearing basin in China[M]. Beijing:Petroleum Industry Press,1992:265-270.

[10]赵丹枫,赵靖舟,陈莹.鄂尔多斯盆地榆林—子洲地区山 2 气藏成藏特征[J].天然气地球科学,2013,24(2):320-328.

Zhao Danfeng,Zhao Jingzhou,Chen Ying. An analysis on the characteristics of the Shan-2 formation gas pools in Yulin-Zizhou area of Ordos basin[J]. Natural Gas Geoscience,2013,24(2):320-328.

[11]姚泾利,唐俊,庞国印,等.鄂尔多斯盆地白豹—华池地区长 8 段孔隙度演化定量模拟[J].天然气地球科学,2013,24(1):38-46.

Yao Jinli,Tang Jun,Pang Guoyin,et al. Quantitative simulation on porosity-evolution in member 8 of Yanchang formation of BaibaoHuachi area,Ordos basin[J]. Natural Gas Geoscience,2013,24(1): 38-46.

[12]Feng Z Q,Zhang S,Timonthy A C,et al. Lacustrine turbidite channels and fans in the Mesozoic Songliao Basin,China[J]. Basin Research,2010,22:96-107.

[13]吴保祥,何金先,张晓丽,等.鄂尔多斯盆地地层埋藏演化与油气成藏分析[J].东北石油大学学报,2012,36(6):8-13.

Wu Baoxiang,He Jingxian,Zhang Xiaoli,et al. Analysis of burial evolution of stratum and oil-gas reservoirs formation in Ordos basin [J]. Journal of Northeast Petroleum University,2012,36(6):8-13.

[14]Zou C N,Zhang X Y,Luo P,et al. Shallow-lacustrine sand-rich deltaic depositional cycles and sequence stratigraphy of the Upper Triassic Yanchang Formation,Ordos Basin,China[J]. Basin Research,2010,22:108-125.

[15]Chen G J,Du G C,Zhang G C,et al. Chlorite cement and its effect on the reservoir quality of sandstones from the Panyu low-uplift,Pearl River Mouth Basin[J]. Petroleum Science,2011,8(2):143-150.

[16]Zhu R K,Zou C N,Zhang N,et al. Diagenetic fluids evolution and genetic mechanism of tight sandstone gas reservoirs in Upper Triassic Xujiahe Formation in Sichuan Basin,China [J]. Science in China (Series D):Earth Sciences,2008,50(1):1340-1353.

[17]陈国俊,杜贵超,张功成,等.珠江口盆地番禺低隆起第三系储层成岩作用及物性影响因素分析[J].天然气地球科学,2009,20(6):854-861.

Chen Guojun,Du Guichao,Zhang Gongcheng,et al. Diagenesis and main factors controlling the reservoir properties of the Panyu Low-uplift reservoirs,Pearl River Mouth Basin [J]. Natural Gas Geoscience, 2009,20(6):854-861.

[18]Bloch S,Lander R H,Bonnell L. Anomalously high porosity and permeability in deeply buried sandstone reservoirs:Origin and predictability[J]. AAPG Bulletin,2002,86(2):301-328.
[1] 关蕴文, 苏思羽, 蒲仁海, 王启超, 闫肃杰, 张仲培, 陈硕, 梁东歌. 鄂尔多斯盆地南部旬宜地区古生界天然气成藏条件及主控因素[J]. 岩性油气藏, 2024, 36(6): 77-88.
[2] 王子昕, 柳广弟, 袁光杰, 杨恒林, 付利, 王元, 陈刚, 张恒. 鄂尔多斯盆地庆城地区三叠系长7段烃源岩特征及控藏作用[J]. 岩性油气藏, 2024, 36(5): 133-144.
[3] 尹虎, 屈红军, 孙晓晗, 杨博, 张磊岗, 朱荣幸. 鄂尔多斯盆地东南部三叠系长7油层组深水沉积特征及演化规律[J]. 岩性油气藏, 2024, 36(5): 145-155.
[4] 牟蜚声, 尹相东, 胡琮, 张海峰, 陈世加, 代林锋, 陆奕帆. 鄂尔多斯盆地陕北地区三叠系长7段致密油分布特征及控制因素[J]. 岩性油气藏, 2024, 36(4): 71-84.
[5] 段逸飞, 赵卫卫, 杨天祥, 李富康, 李慧, 王嘉楠, 刘钰晨. 鄂尔多斯盆地延安地区二叠系山西组页岩气源储特征及聚集规律[J]. 岩性油气藏, 2024, 36(3): 72-83.
[6] 王宏波, 张雷, 曹茜, 张建伍, 潘星. 鄂尔多斯盆地二叠系盒8段河流扇沉积模式及勘探意义[J]. 岩性油气藏, 2024, 36(3): 117-126.
[7] 曹江骏, 王茜, 王刘伟, 李诚, 石坚, 陈朝兵. 鄂尔多斯盆地合水地区三叠系长7段夹层型页岩油储层特征及主控因素[J]. 岩性油气藏, 2024, 36(3): 158-171.
[8] 李启晖, 任大忠, 甯波, 孙振, 李天, 万慈眩, 杨甫, 张世铭. 鄂尔多斯盆地神木地区侏罗系延安组煤层微观孔隙结构特征[J]. 岩性油气藏, 2024, 36(2): 76-88.
[9] 雷涛, 莫松宇, 李晓慧, 姜楠, 朱朝彬, 王桥, 瞿雪姣, 王佳. 鄂尔多斯盆地大牛地气田二叠系山西组砂体叠置模式及油气开发意义[J]. 岩性油气藏, 2024, 36(2): 147-159.
[10] 翟咏荷, 何登发, 开百泽. 鄂尔多斯盆地及邻区中—晚二叠世构造-沉积环境与原型盆地演化[J]. 岩性油气藏, 2024, 36(1): 32-44.
[11] 王小娟, 陈双玲, 谢继容, 马华灵, 朱德宇, 庞小婷, 杨田, 吕雪莹. 川西南地区侏罗系沙溪庙组致密砂岩成藏特征及主控因素[J]. 岩性油气藏, 2024, 36(1): 78-87.
[12] 龙盛芳, 侯云超, 杨超, 郭懿萱, 张杰, 曾亚丽, 高楠, 李尚洪. 鄂尔多斯盆地西南部庆城地区三叠系长7段—长3段层序地层特征及演化规律[J]. 岩性油气藏, 2024, 36(1): 145-156.
[13] 杜江民, 崔子豪, 贾志伟, 张毅, 聂万才, 龙鹏宇, 刘泊远. 鄂尔多斯盆地苏里格地区奥陶系马家沟组马五5亚段沉积特征[J]. 岩性油气藏, 2023, 35(5): 37-48.
[14] 李盛谦, 曾溅辉, 刘亚洲, 李淼, 焦盼盼. 东海盆地西湖凹陷孔雀亭地区古近系平湖组储层成岩作用及孔隙演化[J]. 岩性油气藏, 2023, 35(5): 49-61.
[15] 魏嘉怡, 王红伟, 刘刚, 李涵, 曹茜. 鄂尔多斯盆地西缘冲断带石炭系羊虎沟组沉积特征[J]. 岩性油气藏, 2023, 35(5): 120-130.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 杨占龙, 张正刚, 陈启林, 郭精义,沙雪梅, 刘文粟. 利用地震信息评价陆相盆地岩性圈闭的关键点分析[J]. 岩性油气藏, 2007, 19(4): 57 -63 .
[2] 方朝合, 王义凤, 郑德温, 葛稚新. 苏北盆地溱潼凹陷古近系烃源岩显微组分分析[J]. 岩性油气藏, 2007, 19(4): 87 -90 .
[3] 林承焰, 谭丽娟, 于翠玲. 论油气分布的不均一性(Ⅰ)———非均质控油理论的由来[J]. 岩性油气藏, 2007, 19(2): 16 -21 .
[4] 王天琦, 王建功, 梁苏娟, 沙雪梅. 松辽盆地徐家围子地区葡萄花油层精细勘探[J]. 岩性油气藏, 2007, 19(2): 22 -27 .
[5] 王西文,石兰亭,雍学善,杨午阳. 地震波阻抗反演方法研究[J]. 岩性油气藏, 2007, 19(3): 80 -88 .
[6] 何宗斌,倪 静,伍 东,李 勇,刘丽琼,台怀忠. 根据双TE 测井确定含烃饱和度[J]. 岩性油气藏, 2007, 19(3): 89 -92 .
[7] 袁胜学,王 江. 吐哈盆地鄯勒地区浅层气层识别方法研究[J]. 岩性油气藏, 2007, 19(3): 111 -113 .
[8] 陈斐,魏登峰,余小雷,吴少波. 鄂尔多斯盆地盐定地区三叠系延长组长2 油层组沉积相研究[J]. 岩性油气藏, 2010, 22(1): 43 -47 .
[9] 徐云霞,王山山,杨帅. 利用沃尔什变换提高地震资料信噪比[J]. 岩性油气藏, 2009, 21(3): 98 -100 .
[10] 李建明,史玲玲,汪立群,吴光大. 柴西南地区昆北断阶带基岩油藏储层特征分析[J]. 岩性油气藏, 2011, 23(2): 20 -23 .