基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例

doi:10.11743/ogg20150209

石油与天然气地质 ›› 2015, Vol. 36 ›› Issue (2): 248-254.doi: 10.11743/ogg20150209

基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例

杨辰雨¹, 田景春¹, 张翔¹, 林小兵¹, 刘绪钢², 曹桐生², 邢浩婷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, 四川成都 610059;
2. 中国石化华北油田分公司勘探开发研究院, 河南郑州 450006

收稿日期:2014-12-20 修回日期:2015-01-30 出版日期:2015-04-08 发布日期:2015-05-13
第一作者简介:杨辰雨(1982-),男,博士研究生,沉积学与储层地质学.E-mail:18686846@qq.com.
基金项目:
国家科技重大专项(2011ZX05007-04-01).

Configuration-based fine description of high-quality sand bodies in tidal-flat bar-Taking the tight sandstone reservoir in the 2^nd member of the Taiyuan Formation in D-17 wellblock in Daniudi gasfield as an example

Yang Chenyu¹, Tian Jingchun¹, Zhang Xiang¹, Lin Xiaobing¹, Liu Xugang², Cao Tongsheng², Xing Haoting¹

1. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
2. Petroleum Exploration & Production Research Institute of North China Company, SINOPEC, Zhengzhou, Henan 450006, China

Received:2014-12-20 Revised:2015-01-30 Online:2015-04-08 Published:2015-05-13

摘要/Abstract

摘要： 以大牛地气田未开发区（D17井区）太原组2段潮坪沉积为研究对象，基于测井、岩性等特征分析，对潮坪砂坝进行了精细刻画，共识别出了砂坝主体、砂坝侧翼及砂坝侧翼叠置3个沉积微相单元，并建立了沉积微相-岩相- 测井相-物性-非均质性-试气成果响应模板。对比结果显示，砂坝主体微相岩性主要为（含砾）石英粗砂岩及岩屑石英砂岩，测井曲线具光滑箱形；砂坝侧翼微相岩性主要为中-细粒砂岩岩屑砂岩、岩屑石英砂岩，测井曲线为齿化箱形、齿化钟形以及漏斗形。根据砂体组合类型，区域上划分出了砂坝主体型砂体带与砂坝侧翼型砂体带。前者砂坝宽度为6～8 km，砂体平均厚度为14.5 m，砂地比平均值为0.53，平均渗透率为0.48×10^-3 μm²。后者砂坝宽度为4～6 km，砂体平均厚度为10.56 m，砂地比平均值为0.36，平均渗透率为0.36×10^-3 μm²。砂坝主体型砂体带砂体发育规模大，分布范围广，砂体物性好，中等非均质性，试气成果明显，应作为优先开发的地区。

关键词: 非均质性, 砂坝, 潮坪, 优质砂体, 太原组, 大牛地气田

Abstract: Logging data and lithological analyses of the tidal-flat depositsin the 2^nd member of the Taiyuan Formation(D-17 wellblock)in the Daniudi gas field revealed three sedimentary microfacies:mainsandbar,sandbar flanking and overlain sandbar flanking-.A response-template of sedimentary micro-facies-lithofacies-logging facies-physical property-heterogeneity-gas test was also established.Correlation shows that the main sandbar is mainly gravel-bearing quartzose laterite and lithic quartz sandstone,corresponding to smooth-box type logging curves;and thelatter two are mainly medium-to fine-grained lithic sandstone and quartz sandstone,corresponding to dented box-and bell-shaped or funnel-shaped logging curves.Regionally,two belts were identified based on sand body assemblage types:sand body belt consisting main sandbar and sand body belt consisting sandbar flanking.The former is 6-8 km wide,and has an average thickness of 14.5 m,an average net-to-gross ratio of 0.53 and an average permeability of 0.48×10^-3 μm².The latter is 4-6 km wide and has an average thickness of 10.56 m,an average net-to-gross ratio of 0.36 and an average permeability of 0.36×10^-3 μm².The former with its well developed and widely distributed sand bodies is considered to be a better development target as it has better physical properties and strong heterogeneity and good gas testing results.

Key words: heterogeneity, sand bar, tidal-flat, high-quality sand body, Taiyuan Formation, Daniudi gasfield

中图分类号:

TE122.1

杨辰雨,田景春,张翔,等. 基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例[J]. 石油与天然气地质, 2015, 36(2): 248-254. doi: 10.11743/ogg20150209 Yang Chenyu,Tian Jingchun,Zhang Xiang,et al. Configuration-based fine description of high-quality sand bodies in tidal-flat bar-Taking the tight sandstone reservoir in the 2^nd member of the Taiyuan Formation in D-17 wellblock in Daniudi gasfield as an example[J]. Oil & Gas Geology, 2015, 36(2): 248-254. doi: 10.11743/ogg20150209

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基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例

Configuration-based fine description of high-quality sand bodies in tidal-flat bar-Taking the tight sandstone reservoir in the 2^nd member of the Taiyuan Formation in D-17 wellblock in Daniudi gasfield as an example

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基于砂体构型精细刻画潮坪砂坝优质砂体——以大牛地气田D17井区太原组2段为例

Configuration-based fine description of high-quality sand bodies in tidal-flat bar-Taking the tight sandstone reservoir in the 2nd member of the Taiyuan Formation in D-17 wellblock in Daniudi gasfield as an example

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Configuration-based fine description of high-quality sand bodies in tidal-flat bar-Taking the tight sandstone reservoir in the 2^nd member of the Taiyuan Formation in D-17 wellblock in Daniudi gasfield as an example