[an error occurred while processing this directive] 高校地质学报 2020, 26(3) 323-332 DOI:   10.16108/j.issn1006-7493.2019047  ISSN: 1006-7493 CN: 32-1440/P

本期目录 | 下期目录 | 过刊浏览 | 高级检索                                                            [打印本页]   [关闭]
能源地质学
扩展功能
本文信息
Supporting info
PDF(4500KB)
[HTML全文]
参考文献[PDF]
参考文献
服务与反馈
把本文推荐给朋友
加入我的书架
加入引用管理器
引用本文
Email Alert
文章反馈
浏览反馈信息
本文关键词相关文章
海相页岩
五峰组
龙马溪组
含气量
脆性指数
分类评价
Ⅰ类储层
钻遇率
本文作者相关文章
郭建林
贾成业
何东博
李林
朱汉卿
周倚
刘畅
PubMed
Article by Guo J
Article by Jia C
Article by He D
Article by Li L
Article by Zhu H
Article by Zhou Y
Article by Liu C
四川盆地川南地区五峰组—龙马溪组页岩储层分类评价
郭建林,贾成业,何东博,李林,朱汉卿,周倚,刘畅
1. 中国石油勘探开发研究院,北京100083;
2. 中国石油浙江油田公司,杭州310023;
3. 中国地震局地震研究所,武汉430071;
4. 中国石油大学(北京),北京102249
摘要: 文章在资源评价和有利区优选的基础上,建立了川南地区五峰组—龙马溪组页岩储层分类评价标准。确定孔隙度(Φ) 大于3%,含气饱和度(Sg) 高于30%,岩石骨架密度(DEN) 低于2.7 g/cm3,脆性指数(BI) 高于40%时,对应含气量(Vt) 高于1 m3/t,可识别出储层与非储层,是有效储层识别的标准。采用地质工程一体化评价思路,选取含气量表征页岩储层物质基础,与孔隙度和有机质丰度正相关;选取脆性指数评价工程可压性,与硅质和碳酸盐岩含量正相关,明确了含气量和脆性指数可综合表征页岩储层地质和工程两方面特征。进一步将有效储层划分为三类:I类储层含气量(Vt) 高于4 m3/t,脆性指数(BI)高于50%;II类储层含气量与脆性指数中任何一项低于4 m3/t或50%;三类储层含气量(Vt)介于1~4m3/t,脆性指数(BI) 为40%~50%。川南地区五峰组—龙一1亚段各小层品质较好,以I、II类储层为主,局部为III类储层。采用该分类评价标准,评价水平井实际钻遇储层品质,Ⅰ类储层比例与气井测试产量、EUR间呈正相关,且当Ⅰ类储层钻遇率高于50%,气井测试产量超过15×104 m3/d概率达到92%,对应气井EUR在8000×104 m3以上,达到效益开发的要求。
关键词 海相页岩   五峰组   龙马溪组   含气量   脆性指数   分类评价   Ⅰ类储层   钻遇率  
Classified Evaluation of Shale Reservoirs in the Ordovician Wufeng to Silurian Longmaxi Formations in the Southern Sichuan Basin
GUO Jianlin,JIA Chengye,HE Dongbo,LI Lin,ZHU Hanqing,ZHOU Yi,LIU Chang
1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
2. PetroChina Zhejiang Oilfield Company, Hangzhou 310023, China;
3. Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;
4. China University of Petroleum, Beijing 102249, China
Abstract: On the basis of resource evaluation and favorable area evaluation, this paper established a set of classified evaluation criteria for shale reservoirs in the Wufeng-Longmaxi Formations in the southern Sichuan Basin. The criteria for effective reservoir identification include porosity (Φ) greater than 3%, gas saturation (Sg) higher than 30%, density of rock matrix (DEN) below 2.7 g/cm3, brittleness index (BI) over 40% and gas contents (Vt) higher than 1 m3/t. These criteria can distinguish the reservoirs and non-reservoirs. Based on the conception of geological and engineering integration, gas contents (Vt) has been selected to characterize the resource foundation of shale reservoirs, which is positively correlated with porosity and organic matter abundance. The brittleness index (BI) positively correlating with siliceous and carbonate contents has been selected to characterize the compressibility. Gas contents and brittleness index can comprehensively characterize the geological and engineering characteristics of reservoirs. Effective shale reservoirs have been further divided into three types: Type I with gas contents over 4 m3/t and brittleness index greater than 50%; Type II with gas contents lower than 4 m3/t or brittleness index less than 50%; Type III with gas contents from 1 m3/t to 4 m3/t and brittleness index between 40%-50%. Reservoirs in the Wufeng Formation and the low member of the Longmaxi Formation have a good quality which mainly consist of Types I and II and locally Type III. According to the criteria established in this paper, evaluations for reservoir quality of horizontal drillings have been conducted, and correlations between penetration rate of Type I reservoir, testing production and estimate ultimate recovery (EUR) are positive. Horizontal wells with drilling efficiency of Type I reservoir over 50% have probability of 92% for testing production over 15×104 m3/d and the corresponding EUR exceeding 8000×104 m3, meeting the requirements of economic development.
Keywords:
收稿日期 2019-05-21 修回日期 2019-08-23 网络版发布日期  
DOI: 10.16108/j.issn1006-7493.2019047
基金项目:

通讯作者:
作者简介:
作者Email:

参考文献:
本刊中的类似文章
1.付常青,朱炎铭,陈尚斌,梁峰.渝东北地区WX2井页岩气赋存特征及其勘探指示意义[J]. 高校地质学报, 2016,22(4): 689-
2.杨潇,姜振学,宋岩,黄何鑫,唐相路,纪文明,李卓,王朋飞,陈磊.渝东南牛蹄塘组与龙马溪组高演化海相页岩全孔径孔隙结构特征对比研究[J]. 高校地质学报, 2016,22(2): 368-
3.潘涛,朱雷,王亚东,李晓萌.川南地区龙马溪组有机质特征及其对页岩气富集规律的影响研究[J]. 高校地质学报, 2016,22(2): 344-
4.伊伟,熊先钺,庞斌,王伟,林伟,何春连,车延前,冯延青.鄂尔多斯盆地东南缘上古生界煤储层非均质性及其意义[J]. 高校地质学报, 2016,22(2): 378-
5.胥畅,王文卉*,姚素平.聚焦离子束扫描电镜研究微体化石的微观孔隙结构[J]. 高校地质学报, 2016,22(1): 207-
6.陈刚,秦勇,胡宗全,李五忠,申建.不同煤阶深煤层含气量差异及其变化规律[J]. 高校地质学报, 2015,21(2): 274-
7.曹奇原 王海峰 方一亭 王海峰.江西修水流域上奥陶统五峰组的笔石分带[J]. 高校地质学报, 1998,4(3): 318-323
8.肖传桃 姜衍文 朱忠德 李艺斌 潘云唐.湖北宜昌地区奥陶纪层序地层及扬子地区五峰组沉积环境的讨论[J]. 高校地质学报, 1996,2(3): 339-347

Copyright by 高校地质学报