威远页岩气井EUR 主控因素量化评价研究

doi:10.3969/j.issn.1672-7703.2019.04.013

摘要/Abstract

摘要： 针对威远页岩气藏地质条件复杂、增产效果差异大及生产存在多个流动阶段等特点，根据威远页岩气井开发特征，建立了典型气井评价动态模型；从地质条件、工艺措施和生产条件等方面，研究了威远页岩气井估算的最终可采储量（EUR）的主要影响因素；采用蒙特卡罗法和主成分分析法，量化评价了影响EUR 的主控因素，量化评价出5 个主成分综合反映22 项原始指标98.31% 的信息，综合威远页岩气田60 余口生产井的动静态资料分析，评价认为龙一1a 的钻遇长度、压裂效果是影响页岩气井EUR 的主要因素。开展精准地质导向提高龙一1a 小层钻遇长度及试验新技术、新工艺提高储层改造体积具有重要意义。

关键词: 主控因素, EUR, 水平井, 动态模型；页岩气, 威远

Abstract: In terms of complex geological conditions, different stimulation effects on stimulation and multiple flow stages during the production, a dynamic model was established for shale gas reservoirs in Weiyuan Block. Then, controlling factors on the estimated ultimate recovery (EUR) was studied from the aspects of geological, technological and production conditions, and quantitatively evaluated by means of Monte Carlo method and principal component analysis. Finally, 5 principal components were determined, which comprehensively represent 98.31% information of 22 original indictors. Considering the static and dynamic data of over 60 production wells, the factors influencing the EUR are the drill-in rate and fracturing effect of Long1-1a. Precise geosteering to increase the drill-in rate, new technology and process are important or improving stimulated reservoir volume (SRV).

中图分类号:

熊小林. 威远页岩气井EUR 主控因素量化评价研究[J]. 中国石油勘探, 2019, 24(4): 532-538.

Xiong Xiaolin. Quantitative evaluation of controlling factors on EUR of shale gas wells in Weiyuan block[J]. China Petroleum Exploration, 2019, 24(4): 532-538.

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