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

发布时间：2018-05-02 12:33

本文选题：凝析气藏 + 龙凤山气田　；参考：《天然气地球科学》2017年04期

【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%。
[Abstract]:In view of the complex sedimentary environment, the difficulty of horizontal correlation of reservoir and the difficulty of studying the law of high production and enrichment of gas reservoir in Longfengshan area of Songliao Basin, the sedimentary characteristics of reservoir and the controlling factors affecting the development of reservoir in this area are clarified. Starting with the regional sedimentary background and combining the core, logging, logging and seismic data, the sedimentary analysis method combining macro and micro evidence is adopted: through the core observation and description, the log fine interpretation. Based on the reservoir prediction of seismic data and the analysis of phase characteristics of condensate gas reservoirs, it is considered that fan delta sedimentary system is developed in Yingsisha formation of Longfengshan gas field, and it is further pointed out that distributary channel is a favorable sedimentary microfacies in combination with dynamic test results. Through the distribution analysis of sedimentary facies belt, the lower member of Yingsi sand formation developed multi-stage superimposed distributary channel, the upper member developed multi-stage distributary channel of multi-stage sand and mud interbed, and the phase behavior of condensate gas reservoir was analyzed and the gas reservoir type was determined. It is pointed out that the gas reservoir is a dense clastic condensate gas reservoir with high oil content and high permeability controlled by structure and lithology. The influencing factors affecting the reservoir distribution are determined and the distribution range of the gas reservoir in Yingsi sand formation is determined. On this basis, well location deployment is carried out, which provides technical support for gas field productivity construction. Based on the analysis of the sedimentary characteristics of the reservoir and the analysis of the influencing factors of gas reservoir distribution, the drilling success rate and the productivity up to standard rate of the deployment and development wells are up to 100.
【作者单位】：中国石化勘探开发研究院;
【基金】：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
【分类号】：P618.13

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