层间非均质性致密气藏多层合采产量变化规律研究  

Change Rules of Commingled Production of Tight Gas Reservoir with Interlayer Heterogeneity

作　　者：顾岱鸿[1] 丁道权 刘军 门成全[1] 晏宁平[3] 黄文科[3] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油长庆油田分公司第五采气厂,西安710065 [3]中国石油长庆油田分公司第一采气厂,靖边718500

出　　处：《科学技术与工程》2015年第8期53-59,共7页Science Technology and Engineering

基　　金：国家科技重大专项(2011ZX05013-006)资助

摘　　要：随着优质天然气资源的开发,我国未来天然气产量的增长点将主要依赖致密气藏的开发。靖边气田作为一个典型的低孔、低渗、低丰度致密岩性构造气藏,层间非均质性强,难动用地质储量所占比例大。目前气田低产低效井数增多、稳产能力弱,层间储量动用程度差异大,整个区块开发效率低。在分析靖边气田层间非均质性及气藏产状的基础上,进一步建立了不考虑层间窜流和考虑层间窜流的多层致密气藏渗流模型,对比分析了两种模式下分层产量变化规律。研究了地层系数、储容系数及层间半透壁率对产气量的影响。研究结果可为整个气田经济、高效、合理开发提供理论依据;并对同类气田的增产研究具有一定指导意义。With the development of high quality natural gas resources,the future growth of natural gas production in our country will be mainly depends on the development of dense gas reservoir. As a typical low porosity,low permeability,and low abundance dense tectonic lithological gas reservoir,Jingbian gas field is with strong heterogeneity and the proportion of difficult-to-produce reserves is big. Based on the interlayer heterogeneity and the performance of the tight gas reservoir in Jingbian gas field,the mathematical model considering the crossflow and without the crossflow is established. With the contrast analysis of the layered production change rule under the two models,the influence of formation coefficient,storage coefficient and semi-permeability on the gas production are studied. Results of this work could not only provide some evidences to develop the entire field economically and efficiently,but also show great significance for the stimulation mechanism in other layered gas fields with similar geological conditions.

关 键 词：层间非均质性 致密气藏 多层合采 产量变化 影响因素分析 

分 类 号：TE332[石油与天然气工程—油气田开发工程]