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天然气地球科学 ›› 2019, Vol. 30 ›› Issue (9): 1332–1340.doi: 10.11764/j.issn.1672-1926.2019.05.024

• 非常规天然气 • 上一篇    下一篇

三维地质建模在页岩气甜点定量表征中的应用

张磊夫1,2,3(),董大忠1,2,3(),孙莎莎1,2,于荣泽1,2,李林4,林士尧5,欧阳小虎6,施振生1,2,武瑾1,2,昌燕1,2,马超1,2,李宁1,2   

  1. 1. 中国石油勘探开发研究院，北京 100083
    2. 国家能源页岩气研发(实验)中心，河北 廊坊 065007
    3. 中国石油天然气集团公司非常规油气重点实验室，河北 廊坊 065007
    4. 中国石油浙江油田公司，浙江 杭州 310023
    5. 中国石油国际勘探开发有限公司，北京 100086
    6. 中国石油管道局工程有限公司，河北 廊坊 065000
  • 收稿日期:2019-03-09 修回日期:2019-05-30 出版日期:2019-09-10 发布日期:2019-10-14
  • 通讯作者: 董大忠 E-mail:zhangleifu@petrochina.com.cn.;ddz@petrochina.com.cn.
  • 作者简介:张磊夫（1987-），男，湖南湘潭人，高级工程师，博士，主要从事非常规油气地质、三维建模等研究.E-mail:zhangleifu@petrochina.com.cn.
  • 基金资助:
    国家科技重大专项“页岩储层定量表征及评价”(2017ZX05035002-002)

Application of 3D geological modeling in quantitative characterization of shale gas sweet spots: Case study of Zhaotong national demonstration area of Yangtze region

Lei-fu Zhang1,2,3(),Da-zhong Dong1,2,3(),Sha-sha Sun1,2,Rong-ze Yu1,2,Lin Li4,Shi-yao Lin5,Xiao-hu Ouyang6,Zhen-sheng Shi1,2,Jin Wu1,2,Yan Chang1,2,Chao Ma1,2,Ning Li1,2   

  1. 1. CNPC Research Institute of Petroleum Exploration and Development, Beijing 100083，China
    2. National Energy Shale Gas R & D (Experiment) Center, Langfang 065007, China
    3. CNPC Key Laboratory of Unconventional Oil and Gas, Langfang 065007, China
    4. CNPC Zhejiang Oilfield, Hangzhou 310023, China
    5. CNPC International Exploration and Production Corporation, Beijing 100086, China
    6. China Petroleum Pipeline Engineering Co. Ltd. , Langfang 065000, China
  • Received:2019-03-09 Revised:2019-05-30 Online:2019-09-10 Published:2019-10-14
  • Contact: Da-zhong Dong E-mail:zhangleifu@petrochina.com.cn.;ddz@petrochina.com.cn.

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摘要：

基于地震解释、钻井资料、测井数据、先验地质知识，以扬子地区昭通国家级页岩气示范区为研究对象，应用Petrel三维建模软件，建立了涵盖TOC、孔隙度、含气饱和度、含气量、脆性指数等多种属性的三维储层地质模型。采用Petrel自带模块计算游离气资源量，按照体积法运算公式计算吸附气资源量，计算页岩气资源量超过1 000×108m3，与EUR预测较符合。应用中石油甜点评价标准对模型中所有网格进行筛选，实现对研究区甜点层的定量评价，以及甜点体的三维定量刻画，为气藏开发方案提供指导，是地质—工程一体化的重中之重。

关键词: 昭通页岩气示范区, 三维地质建模, 页岩气甜点, 定量表征

Abstract:

Based on seismic interpretation, drilling data, well logging data, and prior geological knowledge, taking the Zhaotong shale gas National Demonstration Area as a research target, using the three-dimensional modeling software PetrelTM, three-dimensional reservoir models covering the TOC, porosity, gas saturation, gas content, brittleness index and other properties have been built. Free gas resources are calculated using PetrelTM built-in modules. Adsorption gas resources are calculated according to the volumetric method. The overall shale gas resources are estimated to be more than 1 000×108m3, in good accordance with the EUR forecasts. The CNPC sweet spot evaluation standard is applied to filter all the grids in the 3D property models, so that sweet spot layers in the research area can be quantitatively evaluated and sweet spot body can be quantitatively characterized in 3D. Such results can provide guidance for shale gas reservoir development plan, which serve as the priority among all priorities for the geology-engineering integration practice.

Key words: Zhaotong national shale gas demonstration area, 3D geological modeling, Shale gas sweet spot, Quantitative characterization

中图分类号: 

  • TE122.2

图1

研究区位置与目标层系地层划分"

图2

研究区三维有效孔隙度模型（1~9代表不同钻井）"

图3

属性模型平面及剖面"

图4

计算地质储量所用关键属性分布"

表1

优质储层参数标准"

参数 Ⅰ类 Ⅱ类 非I+II类
TOC/% ≥3 2-3 ≤2
孔隙度/% ≥5 3~5 ≤3
脆性指数/% ≥55 45~55 ≤45
含气量 GIPSG/(m3/t) ≥3 2~3 ≤2

图5

研究区优质储层平面展布"

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