[1]許永濤,韓博華,牟秋環,等.鄂爾多斯盆地侏羅系低對比度油層判識方法[J].測井技術,2020,(03):278-282.[doi:10.16489/j.issn.1004-1338.2020.03.012]
 XU Yongtao,HAN Bohua,MOU Qiuhuan,et al.Fluid Identification Method of Low Contrast Reservoirs in Jurassic of Ordos Basin[J].WELL LOGGING TECHNOLOGY,2020,(03):278-282.[doi:10.16489/j.issn.1004-1338.2020.03.012]
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鄂爾多斯盆地侏羅系低對比度油層判識方法()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
期數:
2020年03期
頁碼:
278-282
欄目:
解釋評價
出版日期:
2020-05-15

文章信息/Info

Title:
Fluid Identification Method of Low Contrast Reservoirs in Jurassic of Ordos Basin
文章編號:
1004-1338(2020)03-0278-05
作者:
許永濤 韓博華 牟秋環 韓佳貝 王自亮
(中國石油集團測井有限公司長慶分公司, 陜西 西安 710201)
Author(s):
XU Yongtao HAN Bohua MOU Qiuhuan HAN Jiabei WANG Ziliang
(Changqing Branch, China Petroleum Logging CO. LTD., Xi'an, Shaanxi 710201, China)
關鍵詞:
測井解釋 低對比度油層 含油飽和度 相滲等效產水率含油飽和度下限 鄂爾多斯盆地
Keywords:
log interpretation low-contrast reservoir saturation lower limit of oil saturation calculated from water production rate in terms of relative permeability Ordos basin
分類號:
P631.84
DOI:
10.16489/j.issn.1004-1338.2020.03.012
文獻標志碼:
A
摘要:
鄂爾多斯盆地侏羅系發育大量低對比度油層,具有含油層系多、地層水變化大、油層特征多變、油水關系復雜的特征。綜合運用地質、測井、化驗分析及試油等資料,從儲層特征、水性、電性及相滲分析入手,侏羅系低對比度油層的主控成因是地層水變化大,導致測井電阻率低對比度和特殊相滲關系引起低飽和度低對比度,核心問題是儲層含油飽和度的準確評價和儲層相滲關系主控因素的測井表征。提出電阻率增大率—孔隙度交會、相滲等效產水率含油飽和度下限這2種有效油水識別方法,有效解決了侏羅系低對比度油層判識的難題,在生產應用中解釋符合率明顯提高,見到良好地質效果。
Abstract:
There are a large number of low contrast reservoirs in Jurassic of Ordos basin, which are characterized by many oil-bearing series, great changes in formation water, variable reservoir characteristics and complex oil-water relationship. Synthesizing geological, logging, chemical analysis and oil testing analysis data, based on the analysis of reservoir characteristics, water property, electric property and phase permeability, it is clear that the main controlling cause of low contrast reservoir in Jurassic is the low contrast of logging resistivity caused by the great change of formation water and the low contrast of low saturation caused by the special phase permeability relationship. The key problem is the accurate evaluation of reservoir oil saturation and the reservoir logging characteristics of the main controlling factors of the relationship between the formation and permeability. Based on this, two effective oil-water identification methods are putting forward, cross plot of resistivity index and porosity, as well as lower limit of oil saturation calculated from water production rate in terms of relative permeability, respectively. They can effectively solve the problem of identification of low contrast reservoir in Jurassic system. The consistency between log interpretation and actual production results is significantly improved.

參考文獻/References:

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備注/Memo

備注/Memo:
(修改回稿日期: 2020-04-17 本文編輯 葉春麗)基金項目: 中石油“十三五”后兩年重大科技專項“低對比度油層測井識別技術研究及應用”(2019D-3089) 第一作者: 許永濤,男,1983年生,工程師,從事測井資料綜合評價工作。E-mail:[email protected]
更新日期/Last Update: 2020-05-15
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