东海盆地西湖凹陷花港组储层孔隙演化与油气充注关系

刘勇; 徐国盛; 曾兵; 徐昉昊; 张武; 高耀; 袁海锋

doi:10.11781/sysydz201802168

东海盆地西湖凹陷花港组储层孔隙演化与油气充注关系

doi: 10.11781/sysydz201802168

刘勇¹,
徐国盛^1, ,,
曾兵¹,
徐昉昊¹,
张武²,
高耀¹,
袁海锋¹

1.
成都理工大学油气藏地质及开发工程国家重点实验室, 成都 610059
2. 中海石油(中国)有限公司上海分公司, 上海 200335

基金项目: “十三五”国家重大专项项目“深层优势储层孔喉结构及成岩环境分析技术”（2016ZX05027002-006）资助。

详细信息

作者简介:
刘勇(1988-),男,博士研究生,从事油气藏地质学及油气成藏地球化学研究。E-mail:917200799@qq.com。

通讯作者:
徐国盛(1962-),男,博士,教授,从事储层评价与油气藏研究。E-mail:xgs@cdut.edu.cn。

中图分类号: TE122.23
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出版历程
- 收稿日期: 2017-08-15
- 修回日期: 2018-01-26
- 刊出日期: 2018-03-28

Relationship between porosity evolution and hydrocarbon charging in tight sandstone reservoirs in Oligocene Huagang Formation, Xihu Sag, East China Sea Basin

1.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Chengdu University of Technology), Chengdu, Sichuan 610059, China
2. Shanghai Branch of CNOOC(China) Co. Ltd., Shanghai 200335, China

摘要

摘要: 采用岩石薄片鉴定、扫描电镜、电子探针、流体包裹体分析等测试技术，在储层基本特征分析基础之上，结合埋藏史、热演化史，利用孔隙恢复定量计算方法，对东海盆地西湖凹陷中央反转构造带中北部渐新统花港组致密砂岩储层的孔隙演化进行系统恢复，并探讨了孔隙演化与油气充注关系。研究表明，花港组储层孔隙演化主要经历了早成岩B期末的14.28%，中成岩A期末的10.35%，中成岩B期的8.75%。伴随储层成岩-孔隙演化，花港组储层先后接受了3期油气充注。第一、二期（19~17 Ma和17~9 Ma）油气充注发生于储层尚未致密的中成岩A期末以前，尽管其成藏意义不大，但充注带入的有机酸性流体却对储层物性改善起到了关键性作用，为后续油气充注提供了有利条件。第三期（7~0 Ma）大规模油气充注发生于储层逐渐致密化的中成岩A期末-中成岩B期，主要充注对象为埋深较浅且尚未完全致密化的花港组H3小层。因此，H3小层是现今花港组在总体致密化背景下相对最为有利的油气勘探目标。
- 孔隙演化 /
- 油气充注 /
- 花港组 /
- 渐新统 /
- 西湖凹陷 /
- 东海盆地
Abstract: The pore evolution of tight sandstone reservoirs in the Oligocene Huagang Formation in the central and northern parts of the central reversal structural belt in the Xihu Sag of the East China Sea Basin was recovered based on the analyses of reservoir properties, burial history and thermal evolution history, and using cast thin section identification, scanning electronic microscope, electron microprobe, fluid inclusion analyses and porosity recovery quantified calculation. The relationship between porosity evolution and hydrocarbon charging was also discussed. The results showed that the porosity evolution in the Huagang Formation can be classified into three stages:14.28% in the stage B of early diagenesis, 10.35% in the stage A of middle diagenesis, and 8.75% in the stage B of middle diagenesis, accompanied by three stages of hydrocarbon charging. The first (19-17 Ma) and second (17-7 Ma) stages of hydrocarbon charging took place before the end of stage A of middle diagenesis. The reservoirs were not tight yet, and the acidic fluid brought by hydrocarbon charging played an important role in reservoir reformation, providing favorable porosity and permeability for later hydrocarbon charging. The third stage (7-0 Ma) of massive hydrocarbon charging happened from the end of stage A to the stage B of middle diagenesis, when reservoirs compacted gradually. The third section of Huagang Formation, buried shallow and was not tight yet, showed relatively better reservoir properties and became a main charging target. It is now the most favorable hydrocarbon exploration target for the Huaguang Formation in the overall densification background.
- porosity evolution /
- hydrocarbon charging /
- Huagang Formation /
- Oligocene /
- Xihu Sag /
- East China Sea Basin

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参考文献(22)

[1]	何将启,梁世友,陈拥锋,等.东海盆地西湖凹陷新生代构造演化对油气的控制作用:以平湖组油气响应为例[J].石油实验地质,2008,30(3):221-226. HE Jiangqi,LIANG Shiyou,CHEN Yongfeng,et al.Control on petroleum by Cenozoic tectonic evolution in the Xihu Sag,the East China Sea Basin:Taking petroleum response of the Pinghu Formation as an example[J].Petroleum Geology & Experiment,2008,30(3):221-226.
[2]	张隽.东海盆地西湖凹陷烃源岩成熟度厘定:FAMM分析的证据[J].石油实验地质,2017,39(3):417-422. ZHANG Jun.Maturity determination of hydrocarbon source rocks in Xihu Sag:Evidence from fluorescence alteration of multiple macerals[J].Petroleum Geology & Experiment,2017,39(3):417-422.
[3]	李宁,覃军,江瀚,等.西湖凹陷T气田油气分布特征与主控因素[J].断块油气田,2017,24(3):329-332. LI Ning,QIN Jun,JIANG Han,et al.Hydrocarbon distribution features and its main controlling factors of T gas field,Xihu Sag,East China Sea Shelf Basin[J].Fault-block Oil & Gas Field,2017,24(3):329-332.
[4]	张丹妮,姜效典,邢军辉,等.地震属性预测西湖凹陷N构造"甜点"[J].特种油气藏,2016,23(4):73-76,154. ZHANG Dani,JIANG Xiaodian,XING Junhui,et al.Seismic attri-bute to predict "sweet spot" in N structure,Xihu Sag[J].Special Oil and Gas Reservoirs,2016,23(4):73-76,154.
[5]	刘金水,唐健程.西湖凹陷低渗储层微观孔隙结构与渗流特征及其地质意义:以HY构造花港组为例[J].中国海上油气,2013,25(2):18-23. LIU Jinshui,TANG Jiancheng.Mircoscopic pore texture and percolation features in the low permeability reservoirs and their geolo-gical significance in Xihu Sag:A case of Huagang Formation in HY structure[J].China Offshore Oil and Gas,2013,25(2):18-23.
[6]	王猛,杨玉卿,徐大年,等.东海西湖凹陷致密砂岩气压裂改造层优选因素与方法[J].海洋石油,2016,36(3):43-48. WANG Meng,YANG Yuqing,XU Danian,et al.Optimization factors and method of fracturing tight sandstone gas layer in Xihu Sag of East China Sea[J].Offshore Oil,2016,36(3):43-48.
[7]	郭小文,刘可禹,宋岩,等.库车前陆盆地大北地区砂岩储层致密化与油气充注的关系[J].地球科学,2016,41(3):394-402. GUO Xiaowen,LIU Keyu,SONG Yan,et al.Relationship between tight sandstone reservoir formation and petroleum charge in Dabei area of Kuqa Foreland Basin[J].Earth Science,2016,41(3):394-402.
[8]	李杪,侯云东,罗静兰,等.致密砂岩储层埋藏-成岩-油气充注演化过程与孔隙演化定量分析:以鄂尔多斯盆地东部上古生界盒8段天然气储层为例[J].石油与天然气地质,2016,37(6):882-892. LI Miao,HOU Yundong,LUO Jinglan,et al.Burial,diagenesis,hydrocarbon charging evolution process and quantitative analysis of porosity evolution:a case study from He 8 tight sand gas reservoir of the Upper Paleozoic in Eastern Ordos Basin[J].Oil & Gas Geology,2016,37(6):882-892.
[9]	张绍亮,张建培,唐贤君,等.东海西湖凹陷断裂系统几何学特征及其成因机制[J].海洋地质与第四纪地质,2014,34(1):87-94. ZHANG Shaoliang,ZHANG Jianpei,TANG Xianjun,et al.Geometry characteristic of the fault system in Xihu Sag in East China Sea and its formation mechanism[J].Marine Geology & Quaternary Geo-logy,2014,34(1):87-94.
[10]	杨彩虹,高兆红,蒋一鸣,等.西湖凹陷平湖斜坡带始新统平湖组碎屑沉积体系再认识[J].石油天然气学报,2013,35(9):11-14. YANG Caihong,GAO Zhaohong,JIANG Yiming,et al.Reunderstanding of clastic rock sedimentary facies of Eocene Pinghu Formation in Pinghu Slope of Xihu Sag[J].Journal of Oil and Gas Technology,2013,35(9):11-14.
[11]	赵澄林,朱筱敏.沉积岩石学[M].3版.北京:石油工业出版社,2001. ZHAO Chenglin,ZHU Xiaomin.Sedimentary petrology[M].3rd ed.Beijing:Petroleum Industry Press,2001.
[12]	PETTIJOHN F J.Sedimentary rocks[M].New York:Harper and Row,1949.
[13]	国家能源局.SY/T6285-1997油气储层评价方法[S].北京:石油工业出版社,1998. National Energy Administration.SY/T6285-1997 Evaluating methods of oil and gas reservoirs[S].Beijing:Petroleum Industry Press,1998.
[14]	吴小斌,侯加根,孙卫.特低渗砂岩储层微观结构及孔隙演化定量分析[J].中南大学学报(自然科学版),2011,42(11):3438-3446. WU Xiaobin,HOU Jiagen,SUN Wei.Microstructure characteristics and quantitative analysis on porosity evolution of ultra-low sandstone reservoir[J].Journal of Central South University (Science and Technology),2011,42(11):3438-3446.
[15]	吕成福,陈国俊,杜贵超,等.酒东坳陷营尔凹陷下白垩统储层孔隙特征及其影响因素研究[J].沉积学报,2010,28(3):556-562. LÜ Chengfu,CHEN Guojun,DU Guichao,et al.Characteristics of pore evolution and its controls of Lower Cretaceous reservoir in Ying'er Depression,Jiudong Basin[J].Acta Sedimentologica Sinica,2013,28(3):556-562.
[16]	张荣虎,姚根顺,寿建峰,等.沉积、成岩、构造一体化孔隙度预测模型[J].石油勘探与开发,2011,38(2):145-151. ZHANG Ronghu,YAO Genshun,SHOU Jianfeng,et al.An integration porosity forecast model of deposition,diagenesis and structure[J].Petroleum Exploration and Development,2011,38(2):145-151.
[17]	罗静兰,刘小洪,林潼,等.成岩作用与油气侵位对鄂尔多斯盆地延长组砂岩储层物性的影响[J].地质学报,2006,80(5):664-673. LUO Jinglan,LIU Xiaohong,LIN Tong,et al.Impact of diagenesis and hydrocarbon emplacement on sandstone reservoir quality of the Yanchang Formation (Upper Triassic) in the Ordos Basin[J].Acta Geologica Sinica,2006,80(5):664-673.
[18]	国家经济贸易委员会.SY/T 5477-2003碎屑岩成岩阶段划分[S].北京:石油工业出版社,2003. National Economic and Trade Commission.SY/T 5477-2003 The division of diagenetic stages in clastic rocks[S].Beijing:Petroleum Industry Press,2003.
[19]	核工业北京地质研究院.EJ/T1105-1999矿物流体包裹体温度的测定[S].北京:中国核工业总公司,1999. Beijing Geological Institute of Nuclear Industry.EJ/T1105-1999 Determination of temperature for fluid inlussion in minerals[S].Beijing:China National Nuclear Corporation,1999.
[20]	刘德汉,卢焕章,肖贤明.油气包裹体及其在石油勘探和开发中的应用[M].广州:广东科技出版社,2007. LIU Dehan,LU Huanzhang,XIAO Xianming.Oil-gas inclusion and its application in petroleum exploration and development[M].Guangzhou:Guangdong Science & Technology Press,2007.
[21]	HYODO A,KOZDON R,POLLINGTON A D,et al.Evolution of quartz cementation and burial history of the Eau Claire Formation based on in situ oxygen isotope analysis of quartz overgrowths[J].Chemical Geology,2014,384:168-180.
[22]	OSBORNE M,HASZELDINE S.Evidence for resetting of fluid inclusion temperatures from quartz cements in oilfields[J].Marine and Petroleum Geology,1993,10(3):271-278.