鄂东致密气水下分流河道复合体储层构型布井技术

发布时间：2019-01-26 11:11

【摘要】：基于"剖面分型,平面分带"的储层构型研究思路,综合应用岩心、测井、露头、密井网、生产动态等资料,系统分析了鄂东致密气浅水三角洲前缘水下分流河道复合体储层构型叠置样式与规模尺度,提出了一种基于储层构型研究的致密气开发井位优化布井技术.研究结果表明:水下分流河道复合体剖面上依据叠置样式的不同划分为孤立型、侧叠型、垂叠型和空叠型4种构型样式,平面上依据含砂率的变化划分为主分流河道带、次分流河道带和河道带间3种相带组合.垂叠型、空叠型构型样式发育为主的主分流河道带适合直井规模化部署,选取地震属性、测井曲线等6项参数建立直井规模化部署选区标准,富集区内井网井距400m×600m;空叠型是水平井开发主要目标构型样式,选取邻井测井、邻井储层等6项参数建立了水平井局部部署原则,水平井部署方位沿主分流河道带走向(南北向),水平段长度为1 000m.该项技术的应用极大提高了鄂东气田布井效率及钻井成功率,并可为国内同类气藏开发井位部署提供技术借鉴.
[Abstract]:Based on the research ideas of "profile classification, plane zonation", comprehensive application of core, logging, outcrop, dense well pattern, production performance, etc. This paper systematically analyzes the overlay pattern and scale of the reservoir configuration of the underwater distributary channel complex in the front edge of the tight gas shallow water delta in the east of Hubei Province, and puts forward a technique for optimizing the well location of the tight gas development based on the study of the reservoir configuration. The results show that the underwater distributary channel complex is divided into four types according to the different overlay patterns: isolated type, lateral type, vertical type and empty type, and the main distributary channel zone is divided into main distributary channel zone according to the variation of sand content on the plane. There are three kinds of facies combination between secondary distributary channel zone and channel zone. The main distributary channel belt with vertical and empty stacking configuration is suitable for the large-scale deployment of vertical wells. Six parameters, such as seismic attributes and logging curves, are selected to set up the selection criteria for large-scale deployment of vertical wells, and the spacing of wells in rich areas is 400m 脳 600m. The empty stacking type is the main target configuration pattern of horizontal well development. Six parameters, such as adjacent well logging and adjacent well reservoir, are selected to establish the principle of local layout of horizontal well. The orientation of horizontal well deployment is along the strike of main distributary channel zone (north-south). The length of horizontal segment is 1 000 m. The application of this technology has greatly improved the well distribution efficiency and the drilling success rate in the eastern Hubei gas field, and can be used as a reference for the development of similar gas reservoirs in China.
【作者单位】：中国石油勘探开发研究院;中国石油煤层气有限责任公司;
【基金】：“十三五”国家科技重大专项(2016ZX05015) 中国石油天然气股份有限公司科技攻关项目(2016B-5)
【分类号】：TE324

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