[1]张海涛,郭笑锴,杨小明,等.姬塬地区低对比度油层成因机理与流体识别方法[J].测井技术,2019,43(05):542-549.[doi:10.16489/j.issn.1004-1338.2019.05.019]
 ZHANG Haitao,GUO Xiaokai,YANG Xiaoming,et al.Genesis Mechanism and Fluid Identification of Low Contrast Reservoirs in Jiyuan Area[J].WELL LOGGING TECHNOLOGY,2019,43(05):542-549.[doi:10.16489/j.issn.1004-1338.2019.05.019]
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姬塬地区低对比度油层成因机理与流体识别方法()
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《测井技术》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期数:
2019年05期
页码:
542-549
栏目:
解释评价
出版日期:
2019-10-20

文章信息/Info

Title:
Genesis Mechanism and Fluid Identification of Low Contrast Reservoirs in Jiyuan Area
文章编号:
1004-1338(2019)05-0542-08
作者:
张海涛1郭笑锴2杨小明1周丽艳2胡琮1李婷婷2
(1.中国石油长庆油田分公司勘探开发研究院,陕西西安710018; 2.中国石油集团测井有限公司测井应用研究院,陕西西安710077)
Author(s):
ZHANG Haitao1GUO Xiaokai2YANG Xiaoming1ZHOU Liyan2HU Cong1LI Tingting2
(1. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi 710018, China; 2. Logging Application Institute, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710077, China)
关键词:
测井解释低对比度成因机理流体敏感因子流体特征判别指数识别方法姬塬地区
Keywords:
log interpretation low contrast genesis mechanism sensitive fluid factor fluid characteristic discrimination index identification method Jiyuan area
分类号:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.05.019
摘要:
鄂尔多斯盆地姬塬油田长6储层油水关系复杂,其形成的油层与水层电阻率差异很小,测井对比度低,导致油水层识别困难,属于多因素复杂储层,需要从多角度深入开展相应的成因机理和流体识别方法研究。通过配套的岩石物理实验,水性、试油等资料分析,结合低对比度油层的测井响应特征,确定高束缚水饱和度作用和地层水矿化度差异是其形成低对比度油层的主控因素。基于油层主控因素分析,优选综合反映储层岩性、物性、电性、水性的敏感曲线,建立基于高束缚水和矿化度差异的流体敏感因子低对比度油层识别图版和流体特征判别指数方法,对该地区新完钻20口井试油层进行判别,符合率达到了85%,有效提高了低对比度油层的测井解释符合率。
Abstract:
The OWC of Chang 6 reservoirs in Jiyuan oilfield, the Ordos basin, is complex. The resistivity difference between the oil layer and the water layer is very small, and the logging contrast is low, so that it is difficult to distinguish the oil layer from the water layer. For these complex reservoirs controlled by multiple factors, genesis mechanism and fluid identification should be carried out from various aspects. This study first determines the main factors controlling the formation of low-contrast reservoirs by analyzing high irreducible water saturation and the difference of formation water salinity based on petrophysical experiments, water and oil test data, and logging response characteristics of the low-contrast reservoirs; then after selecting sensitive curves reflecting lithology, physical properties, electrical properties and water quality, establish fluid sensitive factor identification charts and fluid characteristic identification index based on high irreducible water and formation water salinity. Using the method in 20 new wells in the Jiyuan area, the coincidence rate of logging interpretation on oil layers tested is 85%. It can effectively improve the coincidence rate of logging interpretation on low contrast reservoirs and provides technical support for exploration and development of such reservoirs.

参考文献/References:


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备注/Memo

备注/Memo:
基金项目:中国石油天然气集团股份有限公司重大科技专项《复杂油气藏地震预测与测井识别技术研究》(2016E-0503);中国石油集团测井有限公司项目《低饱和度、低对比度地层油水识别技术研究》(CPL2018-B04) 第一作者:张海涛,男,1997年生,博士,从事鄂尔多斯盆地复杂油气层测井评价方法研究及测井新技术推广工作。E-mail:zhanght_cq@petrochina.com.cn(修改回稿日期: 2019-08-26本文编辑余迎)
更新日期/Last Update: 2019-10-20