徐深气田升深2-1区块火山岩气藏开发优化部署
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摘要
为探索松辽盆地徐深气田升深2-1区块火山岩气藏的有效开发模式,提高气藏整体开发效果,以区块火山岩气藏主要地质动态特征为基础,通过开展井网形式、井型和井距优化论证研究,确定"按一套层系,以整体动用Ⅰ、Ⅱ类储层为主",采用"不均匀井网形式、水平井与直井组合、稀井高产、高密低稀、高渗开采低渗"的滚动部署方式综合储层构造特征、火山机构地震反射特征、地震储层预测、地震属性分析和储层发育特征等预测成果,优选有利部位,分两批共优化部署开发评价井和开发井10口,区块平均井网密度达到0.64口/km2。钻探与测试结果表明,以优化方案所布的井均取得较好的开发效果。
In order to explore effective development strategy for the block Shengshen 2-1 volcanic gas reservoirs in the Xushen gas field,Songliao Basin,to improve the overall development effect,and based on the main geological dynamic features of the volcanic gas reservoirs in this block,the method of mainly producing reservoirs type-Ⅰ and type-Ⅱ according to a set of layer series was determined by optimization demonstration study of well-pattern types,well types and well spacing.By adopting roll-deploying models of non-uniform well pattern,combination of horizontal and vertical wells,sparse wells with high yields,high density and low sparseness,and gas production through low-permeability layer by use of high-permeability one,this study took into account the prediction results of reservoir structure features,seismic reflection characteristics,seismic reservoir prediction,seismic attribute analysis and reservoir development characteristics of volcanic framc,to single out the favorable locations,where ten exploitation and appraisal wells in total by two groups were positioned and the average well spacing density in this block was up to 0.64 wells per km2.The drilling and testing results show that those wells located by the optimal strategy have achieved favorable development effect.
In order to explore effective development strategy for the block Shengshen 2-1 volcanic gas reservoirs in the Xushen gas field,Songliao Basin,to improve the overall development effect,and based on the main geological dynamic features of the volcanic gas reservoirs in this block,the method of mainly producing reservoirs type-Ⅰ and type-Ⅱ according to a set of layer series was determined by optimization demonstration study of well-pattern types,well types and well spacing.By adopting roll-deploying models of non-uniform well pattern,combination of horizontal and vertical wells,sparse wells with high yields,high density and low sparseness,and gas production through low-permeability layer by use of high-permeability one,this study took into account the prediction results of reservoir structure features,seismic reflection characteristics,seismic reservoir prediction,seismic attribute analysis and reservoir development characteristics of volcanic framc,to single out the favorable locations,where ten exploitation and appraisal wells in total by two groups were positioned and the average well spacing density in this block was up to 0.64 wells per km2.The drilling and testing results show that those wells located by the optimal strategy have achieved favorable development effect.
引文
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[2]郭建春,罗天雨,赵金洲,等.气井压裂后稳态产能模型[J].天然气工业,2005,25(12):95-96.
[3]谭雷军,贾永禄,冯曦,等.低速非达西流启动压力梯度的确定[J].油气井测试,2000,9(4):5-7.
[4]万仁溥.中国不同类型油藏水平井开采技术[M].北京:石油工业出版社,1997.
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[6]贺伟,冯曦,王阳.低渗气藏气井产能影响因素分析[J].天然气勘探与开发,2000,23(2):23-26.
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