天然气地球科学

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松辽盆地龙凤山凝析气藏营四砂组沉积特征及控制因素分析

张广权,胡向阳,孙兵,贾跃玮   

  1. 中国石化勘探开发研究院,北京 100083
  • 收稿日期:2016-12-02 修回日期:2017-02-27 出版日期:2017-04-10 发布日期:2017-04-10
  • 作者简介:张广权(1979-),男,河北沧州人,高级工程师,主要从事石油与天然气开发研究. E-mail:zhanggq.syky@sinopec.com.
  • 基金资助:

    中国石化油田部开发先导项目“龙凤山气藏开发评价研究”(编号:G5800-13-ZS-YTB053)资助.

Sedimentary characteristics and controlling factors of gas condensate reservoir of Ying Ⅳ formation in Longfengshan Gasfield,Songliao Basin,China

Zhang Guang-quan,Hu Xiang-yang,Sun Bing,Jia Yue-wei   

  1. Research Institute of Petroleum Exploration & Production,SINOPEC,Beijing 100083,China
  • Received:2016-12-02 Revised:2017-02-27 Online:2017-04-10 Published:2017-04-10

摘要:

针对松辽盆地龙凤山地区沉积环境复杂、储层横向对比困难、气藏高产富集规律研究难度大等问题和难点,为明确该地区储层的沉积特征和影响储层发育的控制因素,从区域沉积背景入手,结合岩心、录井、测井及地震等资料,采用宏观证据与微观证据相结合的沉积学分析方法:通过开展岩心观察与描述、测井精细解释、地震资料的储层预测以及凝析气藏的相态特征分析,综合研究认为龙凤山气田营四砂组发育扇三角洲沉积体系,并进一步结合动态测试成果指出分流河道为有利的沉积微相;通过沉积相带展布分析,营四砂组下段发育厚层的多期叠置的分流河道,上段发育多期砂泥互层的分流河道;通过凝析气藏相态特征分析和气藏类型确定,指出该气藏属于受构造和岩性双重控制的高含油的致密低渗碎屑岩凝析气藏,明确了影响储层分布的影响因素,分段确定了营四砂组气层的展布范围。在此基础上,开展了井位部署,为气田的产能建设提供了技术支持。基于该区储层的沉积特征分析和气层分布影响因素分析等研究成果的基础上,部署开发井的钻井成功率和产能达标率均达100%。

关键词: 凝析气藏, 龙凤山气田, 扇三角洲沉积体系, 气藏主控因素

Abstract:

The sedimentary environment in Longfengshan area is very complicated,the comparison of reservoir and the research of the regularity of high production are very difficult.In order to define the sedimentary characteristics and controlling factors of reservoir development in this area,based on regional sedimentary background,combined with the core observation and data analysis of the well logging,we used sedimentary facies analysis of unified method of macro geological understanding and micro geological evidence and found this region mainly developed fan delta front sedimentary system.The favorable sedimentary microfacies is the channel.Through analysis of the distribution characteristics of the sedimentary facies,the lower part of Ying Ⅳ formation developed channel with vertical superimposition at multiple depositional stages.The upper part of Yingcheng Ⅳ formation developed multiperiod distributary channel of sand-mud interbed.By the experimental analysis of fluid PVT,combined with the testing data,Longfengshan Gasfield is high oil-bearing property and has nearly saturated condensate gas reservoir.The distribution of effective reservoir is controlled by sedimentary factor and structure factor.Finally,the distribution range of gas is determined.According to the favorable area and producing reserves,well location deployment was carried out.So the researches provide a technical support for the productivity construction.Based on the analysis of the sedimentary characteristics and the influencing factors of gas reservoir distribution,the drilling success rate and the capacity compliance rate are 100%.

Key words: Condensate gas reservoir, Longfengshan Gasfield, Fan delta sedimentary system, The main controlling of the reservoir

中图分类号: 

  • TE122.2+3

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