[1]谭玉涵,崔式涛,牛伟,等.昭通页岩气区块龙马溪组下段海相页岩气储层沉积微相与测井识别[J].测井技术,2019,43(01):58-63.[doi:10.16489/j.issn.1004-1338.2019.01.011]
 TAN Yuhan,CUI Shitao,NIU Wei,et al.Sedimentary Micro-facies and Log Identification of Marine Shale Gas Reservoirs in the Lower Part of the Longmaxi Formation of Zhaotong Shale Gas Block[J].WELL LOGGING TECHNOLOGY,2019,43(01):58-63.[doi:10.16489/j.issn.1004-1338.2019.01.011]
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昭通页岩气区块龙马溪组下段海相页岩气储层沉积微相与测井识别()
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《测井技术》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期数:
2019年01期
页码:
58-63
栏目:
非常规油气评价
出版日期:
2019-04-20

文章信息/Info

Title:
Sedimentary Micro-facies and Log Identification of Marine Shale Gas Reservoirs in the Lower Part of the Longmaxi Formation of Zhaotong Shale Gas Block
文章编号:
1004-1338(2019)01-0058-06
作者:
谭玉涵1 崔式涛1 牛伟2 马萌3 芮昀2 廖茂杰1 冯俊贵1
(1.中国石油集团测井有限公司测井应用研究院, 陕西 西安 710077; 2.中国石油浙江油田分公司勘探开发研究院, 浙江 杭州 311122; 3.中国石油技术开发有限公司, 北京 100028)
Author(s):
TAN Yuhan1 CUI Shitao1 NIU Wei2 MA Meng3 RUI Yun2 LIAO Maojie1 FENG Jungui1
(1. Research Institute of Logging Applications, CNPC Well Logging Company Limited, Xi'an, Shaanxi 710077, China; 2. PetroChina Zhejiang Oilfield Company, Hangzhou, Zhejiang 310023, China; 3. China Petroleum Technology and Development CO. LTD., Beijing 100
关键词:
非常规储层 沉积微相测井识别 富有机质深水硅泥质陆棚 深水陆棚沉积 龙马溪组 海相页岩气藏 四川盆地
Keywords:
unconventional reservoir identification of sedimentary microfacies logging organic-rich deep-water siliceous-argillaceous shelf deep water shelf deposition Longmaxi formation marine shale gas reservoir Sichuan Basin
分类号:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.01.011
文献标志码:
A
摘要:
四川盆地昭通页岩气藏发育在奥陶系五峰组志留系龙马溪组下段,为黑色、灰黑色泥页岩,主要形成于弱氧化强还原的海相深水陆棚沉积环境。根据海相页岩基本特征、沉积相类型与沉积环境,结合观察岩心、分析实验薄片、录井等资料,将五峰组龙马溪组下段深水陆棚沉积亚相进一步划分为砂泥质、灰泥质、硅泥质、泥质深水陆棚4种沉积微相类型。在此基础上,根据不同沉积微相其元素俘获测井及能谱测井响应特征差异,形成基于元素俘获与能谱测井的页岩气储层沉积微相识别与划分技术。应用该技术对Y9井进行沉积微相划分,结果与薄片鉴定、岩心观察结论相一致。区域连井相对比分析明确了富有机质深水硅泥质陆棚是昭通页岩气示范区五峰组龙马溪组页岩气藏勘探开发的有利相带。该技术对四川盆地海相页岩储层沉积微相划分及勘探有利相带优选有一定借鉴意义。
Abstract:
The Zhaotong shale gas demonstration area in Sichuan basin is a typical representative of marine large-scale shale gas reservoirs in China. The black, gray and black marine shale developed in the lower part of the Ordovician Wufeng Formation and the Silurian Long Maxi Formation, which was mainly formed by the weak oxidation-strong reduction deep water shelf depositional environment. According to the basic characteristics, sedimentary facies type and sedimentary environment of marine shale, as well as the observation of core, experimental thin section and logging data, the deep-water shelf of the lower part of the Wufeng Formation — Longmaxi Formation was further divided into 4 microfacies:deep-water sandy muddy shelf, deep-water plaster shelf, deep-water silty shelf, and deep-water mud shelf. On this basis, according to the difference response characteristics of element capture logging and energy spectrum logging for different sedimentary microfacies, the technology of sedimentary microfacies identification and division of shale gas reservoirs based on element capture and energy spectrum logging was formed. This technique has been used to divide the sedimentary microfacies of well Y9, and the results were consistent with thin section and the conclusion of core observation. Through the comparative analysis of multi-well facies in the study area, it was clear that the organic-rich deep-water siliceous-argillaceous shelf was the most favorable facies zone in the lower part of Longmaxi Formation in Zhaotong shale gas demonstration area. This technique has certain reference significance for the division of sedimentary microfacies and the optimization of favorable exploration facies belts in marine shale reservoirs of Sichuan basin.

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备注/Memo

备注/Memo:
基金项目: 国家科技重大专项“延安地区陆相页岩气勘探开发关键技术”(2017ZX05039)
第一作者: 谭玉涵,女,1990年生,从事测井解释评价与油气田开发。E-mail:390817824@qq.com
更新日期/Last Update: 2019-04-20