[1]譚玉涵,崔式濤,牛偉,等.昭通頁巖氣區塊龍馬溪組下段海相頁巖氣儲層沉積微相與測井識別[J].測井技術,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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昭通頁巖氣區塊龍馬溪組下段海相頁巖氣儲層沉積微相與測井識別()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期數:
2019年01期
頁碼:
58-63
欄目:
非常規油氣評價
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
文章編號:
1004-1338(2019)01-0058-06
作者:
譚玉涵1 崔式濤1 牛偉2 馬萌3 芮昀2 廖茂杰1 馮俊貴1
(1.中國石油集團測井有限公司測井應用研究院, 陜西 西安 710077; 2.中國石油浙江油田分公司勘探開發研究院, 浙江 杭州 311122; 3.中國石油技術開發有限公司, 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
關鍵詞:
非常規儲層 沉積微相測井識別 富有機質深水硅泥質陸棚 深水陸棚沉積 龍馬溪組 海相頁巖氣藏 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
分類號:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.01.011
文獻標志碼:
A
摘要:
四川盆地昭通頁巖氣藏發育在奧陶系五峰組志留系龍馬溪組下段,為黑色、灰黑色泥頁巖,主要形成于弱氧化強還原的海相深水陸棚沉積環境。根據海相頁巖基本特征、沉積相類型與沉積環境,結合觀察巖心、分析實驗薄片、錄井等資料,將五峰組龍馬溪組下段深水陸棚沉積亞相進一步劃分為砂泥質、灰泥質、硅泥質、泥質深水陸棚4種沉積微相類型。在此基礎上,根據不同沉積微相其元素俘獲測井及能譜測井響應特征差異,形成基于元素俘獲與能譜測井的頁巖氣儲層沉積微相識別與劃分技術。應用該技術對Y9井進行沉積微相劃分,結果與薄片鑒定、巖心觀察結論相一致。區域連井相對比分析明確了富有機質深水硅泥質陸棚是昭通頁巖氣示范區五峰組龍馬溪組頁巖氣藏勘探開發的有利相帶。該技術對四川盆地海相頁巖儲層沉積微相劃分及勘探有利相帶優選有一定借鑒意義。
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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備注/Memo

備注/Memo:
基金項目: 國家科技重大專項“延安地區陸相頁巖氣勘探開發關鍵技術”(2017ZX05039)
第一作者: 譚玉涵,女,1990年生,從事測井解釋評價與油氣田開發。E-mail:[email protected]
更新日期/Last Update: 2019-04-20
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