天然气地质学

致密砂岩储层微观孔隙特征评价——以中国吐哈盆地为例

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  • 1.中国石油大学非常规油气与新能源研究院,山东 青岛 266580;
    2.中国石油吐哈油田分公司勘探开发研究院,新疆 哈密 839000
王伟明(1981-),男, 黑龙江五常人,讲师,博士,硕士生导师,主要从事非常规油气地质与评价研究. E-mail:〖WTBZ〗wangweiming6686@163.com.

收稿日期: 2016-01-12

  修回日期: 2016-03-21

  网络出版日期: 2019-09-10

基金资助

国家自然科学基金(编号:41302103;41330313;41672125);中国石油科技创新基金项目(编号:2014D-5006-0107);中央高校基本科研业务费专项联合资助.

Analyses of micro-pore structural characteristics of tight sandstone reservoirs: A case study in Turpan-Hami Basin,northwestern China

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  • 1.Research Institute of Unconventional Petroleum and Renewable Energy,China University of Petroleum(Huadong),Qingdao 266580,China;
    2.Petroleum Exploration and Development Research Institute,PetroChina Tuha Oilfield Company,Hami 839000,China

Received date: 2016-01-12

  Revised date: 2016-03-21

  Online published: 2019-09-10

摘要

致密砂岩微观孔隙特征评价是致密油气地质评价的核心研究工作。基于恒速压汞、铸体薄片、X-射线衍射等测试分析,对吐哈盆地水西沟群致密砂岩开展微观孔隙特征评价工作。研究表明:靶区致密储层岩石类型以岩屑长石砂岩和长石岩屑砂岩为主,不稳定矿物含量高是导致微观孔隙结构复杂的主要原因;致密储层的物性与矿物组成有密切关系,石英由于其脆性而易形成微裂缝,对储层的渗透率贡献明显,对孔隙度影响不大;黏土矿物由于其可塑性及遇水膨胀的特性,对孔隙度和渗透率影响明显,均呈负相关;长石由于其不稳定性,在溶蚀作用下形成高岭石,但在致密储层复杂孔喉体系的背景下,流体的迂回程度高,造成高岭石多在原地沉淀,堵塞孔隙和喉道,与孔渗存在明显的负相关;基于毛管压力曲线,可把致密储层的孔喉结构划为3类,分别为粗喉道所控制的高孔区、中喉道控制的中孔区和细喉道控制的低孔区;同常规储层相比,致密储层具有排替压力高、进汞饱和度低、喉道半径小、孔喉比高、结构系数高等特点。该评价方法和思路,为吐哈盆地,乃至我国其他盆地的致密油气勘探提供科学依据。

本文引用格式

王伟明, 卢双舫, 李杰, 田伟超, 周能武, 黄文彪 . 致密砂岩储层微观孔隙特征评价——以中国吐哈盆地为例[J]. 天然气地球科学, 2016 , 27(10) : 1828 -1836 . DOI: 10.11764/j.issn.1672-1926.2016.10.1828

Abstract

Evaluation of micro-pore structural characteristics is one of the key issues needed to be addressed in tight oil and gas geology evaluation.This article discussed a study of the kind based on data gathered through experiments and technologies like rate-controlled mercury penetration,casting thin sections,X-ray diffractions,upon samples from tight sandstone reservoirs in a study area of the Shuixigou Group in Turpan-Harmi Basin,northwestern China.The result showed that the tight rock types are mostly lithic feldspar sandstone and feldspar lithic sandstone.The main reason of the complicated micro-pore structure and system is high content of unstable minerals.The physical properties of the reservoirs were linked closely to the composition of rock minerals.Brittle quartz was easily crashed to form micro-fissures and intergranular pores,thus affecting reservoir permeability(but not porosity).Clay was soft and swellable with water.The content of clay had an obvious influence upon reservoir porosity and permeability,whose correlation is negative.Feldspar was unstable and easily to be dissolved to form kaolinite,which were trapped by detoured pore network and precipitated in-situ to block pores and throats.The content of feldspar also had a good negative relationship with reservoir permeability and porosity.Pore-throat structure of tight sandstone reservoirs may present itself as the following three scenarios based on curves plotted upon data from rate-controlled mercury penetration experiments from study area:large-pore system controlled by fat throats,pores of medium size controlled by medium-sized throats and tiny pores controlled by tiny throats.Compared with conventional reservoirs,the tight sandstone reservoirs had higher expulsion pressure and lower mercury-injection saturation,half as much throat radius,and obviously higher structural coefficient.The evaluation method proposed in the article may serve as a scientific ground for future tight oil and gas exploration in Turpan-Hami as well as in other basins in China.

参考文献

[1]Zou Caineng,Zhu Rukai,Wu Songtao,et al.Types,characteristics,genesis and prospects of conventional and unconventional hydrocarbon accumulations:Taking tight oil and tight gas in China as an instance[J].Acta Petrolei Sinica,2012,33(2):173-187.[邹才能,朱如凯,吴松涛,等.常规与非常规油气聚集类型、特征、机理及展望__以中国致密油和致密气为例[J].石油学报,2012,33(2):173-187.]
[2]Qiu Zhen,Zou Caineng,Li Jianzhong,et al.Unconventional petroleum resources assessment:Progress and future prospects[J].Natural Gas Geoscience,2013,24(2):238-246.[邱振,邹才能,李建忠,等.非常规油气资源评价进展与未来展望[J].天然气地球科学,2013,24(2):238-246.]
[3]Dai Jinxing,Ni Yunyan,Wu Xiaoqi.Tight gas in China and its significance in exploration and exploitation[J].Petroleum Exploration and Development,2012,39(3):257-264.[戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264.]
[4]Cai Xiyuan.Gas accumulation patterns and key exploration techniques of deep gas reservoirs in tight sandstone:An example from gas exploration in the Xujiahe Formation of the western Sichuan Depression,the Sichuan Basin[J].Oil & Gas Geology,2010,31(6):707-714.[蔡希源.深层致密砂岩气藏天然气富集规律与勘探关键技术——以四川盆地川西坳陷须家河组天然气勘探为例[J].石油与天然气地质,2010,31(6):707-714.]
[5]Wang Weiming,Zhao Xu,Sun Jiwen,et al.Key parameter selection for tight gas resource potential:A case from Turfan-Hami Basin[J].Oil & Gas Geology,2014,35(2):258-265.[王伟明,赵旭,孙计文,等.致密砂岩气资源潜力关键参数确定方法-以吐哈盆地为例[J].石油与天然气地质,2014,35(2):258-265.]
[6]Meng Yuanlin,Hu Yue,Li Xinning,et al.Controlling factors on physical property of tight volcanic rocks and reservoir quality prediction:A case study of the Tiaohu Formation in Marlang-Tiaohu Sag[J].Oil & Gas Geology,2014,35(2):244-252.[孟元林,胡越,李新宁,等.致密火山岩物性影响因素分析与储层质量预测__以马朗_条湖凹陷条湖组为例[J].石油与天然气地质,2014,35(2):244-252.]
[7]Feng Zihui,Yin Changhai,Lu Jiamin,et al.Formation and accumulation of tight sandy conglomerate gas:A case from the Lower Cretaceous Yingcheng Formation of Xujiaweizi fault depression,Songliao Basin[J].Petroleum Exploration and Development,2013,40(6):650-656.[冯子辉,印长海,陆加敏,等.致密砂砾岩气形成主控因素与富集规律__以松辽盆地徐家围子断陷下白垩统营城组为例[J].石油勘探与开发,2013,40(6):650-656.]
[8]Fan Junjia,Zhou Haimin,Liu Shaobo.Pore structure and gas migration characterization of tight sandstone in Kuqa Depression of Tarim Basin[J].Journal of University of Chinese Academy of Sciences,2014,31(1):108-116.[范俊佳,周海民,柳少波.塔里木盆地库车坳陷致密砂岩储层孔隙结构与天然气运移特征[J].中国科学院大学学报,2014,31(1):108-116.]
[9]You Yuan,Niu Xiaobing,Xin Honggang,et al.Research on micro pore structure of overseas tight oil reservoir and its influence on Ordos Basin[J].Oil  Forum,2013,32(1):12-18.[尤源,牛小兵,辛红刚,等.国外致密油储层微观孔隙结构研究及其对鄂尔多斯盆地的启示[J].石油科技论坛,2013,32(1):12-18.]
[10]Meng Yuanlin,Hu Anwen,Qiao Dewu,et al.Regional diagenetic law and control of diagenesis over gas-bearing capacity of tight reservoirs in deep Xujiaweizi fault depression,Songliao Basin[J].Acta Geologica Sinica,2012,86(2):325-334.[孟元林,胡安文,乔德武,等.松辽盆地徐家围子断陷深层区域成岩规律和成岩作用对致密储层含气性的控制[J].地质学报,2012,86(2):325-334.]
[11]Yang Shengyu,Zhang Jinchuan,Huang Weidong,et al.“Sweet spot”types of reservoirs and genesis of tight sandstone gas in Kekeya area,Turpan-Hami Basin[J].Acta Petrolei Sinica,2012,34(2):272-282.[ 杨升宇,张金川,黄卫东,等.吐哈盆地柯柯亚地区致密砂岩气储层“甜点”类型及成因[J].石油学报,2012,34(2):272-282.]
[12]Zeng Lianbo,Kang Yongshang,Xiao Shurong.Development characteristics and geneses of the fracturesinlow-permeability sandstone reservoir in the nothern depression of Tuha Basin[J].Journal of Xi,an Shiyou University:Natural Science Edition,2008,23(1):22-25.[曾联波,康永尚,肖淑容.吐哈盆地北部凹陷低渗透砂岩储层裂缝发育特征及成因[J].西安石油大学:自然科学版,2008,23(1):22-25.]
[13]Wang Jinsong,Wang Wenhui,Mou Lansheng,et al.Characteristic of tight sandstone gas reservoir in Tuha Basin and its exploration targe[J].Xinjiang Petroleum Geology,2011,32(1):14-17.[王劲松,王文慧,牟兰昇,等.吐哈盆地致密砂岩气成藏特征及勘探方向[J].新疆石油地质,2011,32(1):14-17.]
[14]Yu Yixin,Zhang Jinchuan,Yin Tengyu,et al.Characteristic and model for tight sandstone gas accumulation in Tuha Basin[J].Xinjiang Petroleum Geology,2012,33(3):283-287.[俞益新,张金川,尹腾宇,等.吐哈盆地致密砂岩气成藏特征及模式[J].新疆石油地质,2012,33(3):283-287.]
[15]Lu Hongxia,Chen Zhenlin,Gao Zhenfeng,et al.Analysis on influencing factors of diagenesis in clastic reservoir[J].Petroleum Geology and Recovery Efficiency,2009,16(4):53-55.[卢红霞,陈振林,高振峰,等.碎屑岩储层成岩作用影响因素[J].油气地质与采收率,2009,16(4):53-55.]
[16]Zhang Zhihuan,Hu Wenxuan,Zeng Jianhui,et al.Types,Repercussion study of Dongying Sag paleogene system fluid and rock[J].Acta Sedimentologica Sinica,2000,18(4):560-566.[张枝焕,胡文瑄,曾溅辉,等.东营凹陷古近系流体_岩石相互作用研究[J].沉积学报,2000,18(4):560-566.]
[17]Gao Hui,Xie Wei,Yang Jianpeng,et al.Pore throat characteristics of extra-ultra low permeability sandstone reservoir based on constant-rate mercury penetration technique[J].Petroleum Geology Experiment,2011,33(2):206-214.[高辉,解伟,杨建鹏,等.基于恒速压汞技术的特低-超低渗砂岩储层微观孔喉特征[J].石油实验地质,2011,33(2):206-214.]
[18]Zhu Yongxian,Sun Wei,Yu Feng.Application of high pressure Hg injection and rate controlled Hg penetration experimental technique to studying reservoir microscopic pore structure:Taking Toutunhe Formation in Niuquanhu area of Santanghu Oilfield as an example[J].Natural Gas Geoscience,2008,19(4):553-556.[朱永贤,孙卫,于锋.应用常规压汞和恒速压汞实验方法研究储层微观孔隙结构[J].天然气地球科学,2008,19(4):553-556.]
[19]Li Weicheng,Zhang Yanmei,Wang Fang,et al.Application of constant-rate mercury penetration technique to study of pore throat characteristics of tight reservoir:A case study from the Upper Triassic Yanchang Formation in Ordos Basin[J].Lithologic Reservoirs,2012,24(6):60-65.[李卫成,张艳梅,王芳,等.应用恒速压汞技术研究致密油储层微观孔喉特征:以鄂尔多斯盆地上三叠统延长组为例[J].岩性油气藏,2012,24(6):60-65.]
[20]Li Shan,Sun Wei,Wang Li,et al.Application of constant-rate mercury injection technology in reservoir pore structure study[J].Fault-Block Oil & Gas Field,2013,20(4):485-487.[李珊,孙卫,王力,等.恒速压汞技术在储层孔隙结构研究中的应用[J].断块油气田,2013,20(4):485-487.]
[21]Li Defa,Liu Wenbi,Wang Honghui.Pore structures features of Triassic reservoir in South Arkula,north Tarim Basin[J].Journal of Southwestern Petroleum Institute,1995,17(2):22-30.[李德发,刘文碧,王洪辉.塔北阿克库勒南部二叠系储层孔隙结构特征[J].西南石油学院学报,1995,17(2):22-30.]

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