[1]劉亞洲,剛文哲,陳果,等.改進的Δlog R模型在烴源巖評價中的應用[J].測井技術,2019,43(01):81-86.[doi:10.16489/j.issn.1004-1338.2019.01.015]
 LIU Yazhou,GANG Wenzhe,CHEN Guo,et al.Application of Improved Δlog R Model in Evaluation of Source Rocks[J].WELL LOGGING TECHNOLOGY,2019,43(01):81-86.[doi:10.16489/j.issn.1004-1338.2019.01.015]
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改進的Δlog R模型在烴源巖評價中的應用()
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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:
81-86
欄目:
綜合應用
出版日期:
2019-04-20

文章信息/Info

Title:
Application of Improved Δlog R Model in Evaluation of Source Rocks
文章編號:
1004-1338(2019)01-0081-07
作者:
劉亞洲 剛文哲 陳果 田成博
(中國石油大學(北京)地球科學學院, 北京 昌平 102249)
Author(s):
LIU Yazhou GANG Wenzhe CHEN Guo TIAN Chengbo
(College of Geosciences, China University of Petroleum, Beijing 102249, China)
關鍵詞:
測井解釋 有機質豐度 復雜巖性 長7油層組 鹽池-定邊地區
Keywords:
log interpretation organic matter abundance complex lithology Chang 7 reservoir Yanchi-Dingbian area
分類號:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.01.015
文獻標志碼:
A
摘要:
傳統的Δlog R模型在基線值、電阻率和聲波時差之間的關系系數確定等方面存在很強的主觀性、區域實用性等問題。針對以上問題,選取鄂爾多斯盆地鹽池-定邊地區長7油層組泥頁巖等復雜巖性作為研究對象,采用追本溯源的思想,對Δlog R模型的由來進行了數學推導。利用Δlog R基線的模型化和不同實測點的斜率動態化取代傳統Δlog R模型中電阻率和聲波時差疊合系數為固定值的算法,得出改進的Δlog R模型的計算公式,并在研究區對計算結果進行驗證和誤差分析。改進的Δlog R模型得出的有機碳含量與實測的有機碳含量符合程度較高; 單井縱向上表現出長7油層組有機質豐度非均質性很強,具有向上變小的趨勢; 改進的Δlog R模型較傳統模型計算誤差最小,適用范圍得到一定程度擴大,可在鹽池-定邊地區推廣應用。
Abstract:
The traditional Δlog R model can be used to evaluate the organic matter abundance but this method has strong subjectivity and regional differences while determining the baseline value and the relationship coefficient between resistivity and acoustic time difference. In view of the above problems the complex lithology such as the shale in the Yanchi-Dingbian area of Ordos Basin was selected as the research object and the idea of tracing back to the origin was used to deduce the equation of Δlog R. By modelling of Δlog R baselines and changeable slopes among different measured spots replacing the fixed composite coefficient the improved Δlog R calculation formula was obtained The results of the improved model were verified by the core and the error analysis was carried out it is found that the organic carbon content obtained by the improved Δlog R model was in good agreement with the core analysis results. For single well the calculation results of the new model show that the heterogeneity of organic matter abundance was very strong in the longitudinal direction in Chang7 Reservoir but there was a tendency to become smaller. Compared with the traditional model the improved Δlog R model has little calculation error and the scope of application has been expanded to a certain extent which means that this method can be used for source rock evaluation in whole Yanchi-Dingbian region.

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備注/Memo

備注/Memo:
基金項目: 中國石油天然氣股份有限公司長慶油田分公司“鹽池-定邊地區中生界生烴條件研究及有利區預測”(HX2016007)
第一作者: 劉亞洲,男,1992年生,碩士研究生,研究方向油氣地球化學。E-mail:[email protected]
通訊作者: 剛文哲,男,1965年生,教授,博士生導師,從事油氣地化與油氣地質科研與教學。E-mail:[email protected]
更新日期/Last Update: 2019-04-20
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