[1]陈德坡,刘焕成,陈姝宁.孤东油田七区西馆五段曲流河点坝内部构型[J].新疆石油地质,2019,(02):188.[doi:10.7657/XJPG20190210]
 CHEN Depo,LIU Huancheng,CHEN Shuning.Internal Configuration of Meandering River Point Bar in the Fifth Member of Guntao Formation in the Western District 7, Gudong Oilfield[J].Xinjiang Petroleum Geology,2019,(02):188.[doi:10.7657/XJPG20190210]
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孤东油田七区西馆五段曲流河点坝内部构型()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年02期
页码:
188
栏目:
出版日期:
2019-03-28

文章信息/Info

Title:
Internal Configuration of Meandering River Point Bar in the Fifth Member of Guntao Formation in the Western District 7, Gudong Oilfield
文章编号:
1001-3873(2019)02-0188-06
作者:
陈德坡1刘焕成2陈姝宁3
(1.中国石化 胜利油田分公司 勘探开发研究院,山东 东营 257015;2.山东胜利职业学院 油气勘查与信息工程系,山东 东营 257098;3.中国石油集团测井有限公司 天津分公司,天津 300280)
Author(s):
CHEN Depo1 LIU Huancheng2 CHEN Shuning3
(1.Research Institute of Exploration and Development, Shengli Oilfield Company, Sinopec, Dongying, Shandong 257015, China; 2.Department of Oil & Gas Exploration and Information Engineering, Shandong Shengli Vocational College, Dongying, Shandong 257098, China; 3.Tianjin Branch, Logging Company, CNPC, Tianjin 300280, China)
关键词:
孤东油田馆陶组曲流河点坝内部构型剩余油分布
Keywords:
Gudong oilfield Guantao formation meandering river point-bar internal configuration remaining oil distribution
分类号:
TE122.221
DOI:
10.7657/XJPG20190210
文献标志码:
A
摘要:
馆陶组馆五段是孤东油田七区西的主力油层,储集层为曲流河沉积的疏松砂岩。油田开发中,新钻井目的层剩余油饱和度与预期不符,无法实现原来的设计目标;老井实施的调整和挖潜效果与地质认识不匹配,加大了油田增产的难度,急需明确曲流河点坝储集层内部构型要素与剩余油的关系。通过对密闭取心井岩心的研究,总结出点坝内部侧积层的数量和岩石类型,分析不同岩性侧积层渗流及点坝内部剩余油的分布特点;利用密井网资料,对点坝内部构型要素进行解剖,明确侧积层厚度、产状及展布特征,进而推算出点坝的长度与宽度,曲流河的深度与满岸宽度;并对研究区的废弃河道进行了识别,得到研究区废弃河道平面展布特征;结合测井、岩心、分析化验等资料,解剖对子井点坝内部构型,对紧邻注水井的新钻井高剩余油给出了合理解释。研究结果表明,点坝内部构型是控制剩余油分布最为重要的因素,剩余油主要分布于物性较差侧积层之上的储集层中。
Abstract:
The Fifth member of Guantao formation is the main oil layer in the western District 7 of Gudong oilfield and the reservoir belongs to loose sandstones of meandering river deposition. At present, the remaining oil saturation of the target zone in newly-drilled wells is not consistent with the expected one during the oilfield development, so the original designed objects cann’t be achieved. The effects of well adjustment and potential tapping in the existing wells don’t match with the geological understanding, which increases the difficulties of oilfield stimulation and it is urgent to verify the relationship between the internal configuration elements of meandering-river point bar reservoirs and the remaining oil distribution. Based on the study of the cores obtained from sealed coring wells, the paper summarizes the amount of the lateral accretion layers and rock types within the point bar, analyzes the flowing characteristics of the lateral accretion layers with different lithologies and the remaining oil distribution within the point bar, unravels the key elements of the internal configuration of the point bar, obtains the thickness, occurrence and distribution of the lateral accretion layer, and then calculates the length and width of the point bar and the depth and full shore width of the meandering river. Based on the data of logging, core and lab analysis, the internal configuration of the point bar in paired wells is analyzed and the high remaining oil saturation in the newly-drilled wells adjacent to water injection wells is reasonably explained. The study results show that the internal configuration of the point bar is the most important factor controlling remaining oil distribution and the remaining oil is mainly distributed in the reservoirs above the lateral accretion layers with relatively poor physical properties

相似文献/References:

[1]孙红霞,赵玉杰,姚军.一种新的曲流河点坝砂体侧积层建模方法——以孤东油田七区西Ng52+3层系为例[J].新疆石油地质,2017,(04):477.[doi:10.7657/XJPG20170417]
 SUN Hongxia,ZHAO Yujie,YAO Jun.A New Modeling Method of Lateral Accretion Layers in Sandbodies of Meandering River Point Bars : A Case Study from Ng52+3 Layer of Western District 7 in Gudong Oilfield[J].Xinjiang Petroleum Geology,2017,(02):477.[doi:10.7657/XJPG20170417]
[2]陈容涛,牛成民,王清斌,等.黄河口凹陷南部缓坡带馆陶组河流相层序特征[J].新疆石油地质,2018,(05):542.[doi:10.7657/XJPG20180507]
 CHEN Rongtao,NIU Chengmin,WANG Qingbin,et al.Characteristics of Fluvial Sedimentary Sequences of Guantao Formation in the Southern Gentle Slope Belt, Huanghekou Sag[J].Xinjiang Petroleum Geology,2018,(02):542.[doi:10.7657/XJPG20180507]

更新日期/Last Update: 2019-03-28